Merge tag 'v3.16-rc1' into x86/cpufeature

Linux 3.16-rc1

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

113 files changed, 5843 insertions, 1663 deletions

diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt
index fdfceee0ffd0..b3b8abae62b8 100644
--- a/tools/perf/Documentation/perf-diff.txt
+++ b/tools/perf/Documentation/perf-diff.txt
@@ -33,21 +33,25 @@ OPTIONS
 -d::
 --dsos=::
         Only consider symbols in these dsos. CSV that understands
-        file://filename entries.
+        file://filename entries.  This option will affect the percentage
+        of the Baseline/Delta column.  See --percentage for more info.
 
 -C::
 --comms=::
         Only consider symbols in these comms. CSV that understands
-        file://filename entries.
+        file://filename entries.  This option will affect the percentage
+        of the Baseline/Delta column.  See --percentage for more info.
 
 -S::
 --symbols=::
         Only consider these symbols. CSV that understands
-        file://filename entries.
+        file://filename entries.  This option will affect the percentage
+        of the Baseline/Delta column.  See --percentage for more info.
 
 -s::
 --sort=::
-        Sort by key(s): pid, comm, dso, symbol.
+        Sort by key(s): pid, comm, dso, symbol, cpu, parent, srcline.
+        Please see description of --sort in the perf-report man page.
 
 -t::
 --field-separator=::
@@ -89,6 +93,14 @@ OPTIONS
 --order::
        Specify compute sorting column number.
 
+--percentage::
+        Determine how to display the overhead percentage of filtered entries.
+        Filters can be applied by --comms, --dsos and/or --symbols options.
+
+        "relative" means it's relative to filtered entries only so that the
+        sum of shown entries will be always 100%.  "absolute" means it retains
+        the original value before and after the filter is applied.
+
 COMPARISON
 ----------
 The comparison is governed by the baseline file. The baseline perf.data
@@ -157,6 +169,10 @@ with:
   - period_percent being the % of the hist entry period value within
     single data file
 
+  - with filtering by -C, -d and/or -S, period_percent might be changed
+    relative to how entries are filtered.  Use --percentage=absolute to
+    prevent such fluctuation.
+
 ratio
 ~~~~~
 If specified the 'Ratio' column is displayed with value 'r' computed as:
@@ -187,4 +203,4 @@ If specified the 'Weighted diff' column is displayed with value 'd' computed as:
 
 SEE ALSO
 --------
-linkperf:perf-record[1]
+linkperf:perf-record[1], linkperf:perf-report[1]
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index c71b0f36d9e8..d460049cae8e 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -184,9 +184,10 @@ following filters are defined:
         - in_tx: only when the target is in a hardware transaction
         - no_tx: only when the target is not in a hardware transaction
         - abort_tx: only when the target is a hardware transaction abort
+        - cond: conditional branches
 
 +
-The option requires at least one branch type among any, any_call, any_ret, ind_call.
+The option requires at least one branch type among any, any_call, any_ret, ind_call, cond.
 The privilege levels may be omitted, in which case, the privilege levels of the associated
 event are applied to the branch filter. Both kernel (k) and hypervisor (hv) privilege
 levels are subject to permissions.  When sampling on multiple events, branch stack sampling
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 8eab8a4bdeb8..cefdf430d1b4 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -25,10 +25,6 @@ OPTIONS
 --verbose::
         Be more verbose. (show symbol address, etc)
 
--d::
---dsos=::
-        Only consider symbols in these dsos. CSV that understands
-        file://filename entries.
 -n::
 --show-nr-samples::
         Show the number of samples for each symbol
@@ -42,11 +38,18 @@ OPTIONS
 -c::
 --comms=::
         Only consider symbols in these comms. CSV that understands
-        file://filename entries.
+        file://filename entries.  This option will affect the percentage of
+        the overhead column.  See --percentage for more info.
+-d::
+--dsos=::
+        Only consider symbols in these dsos. CSV that understands
+        file://filename entries.  This option will affect the percentage of
+        the overhead column.  See --percentage for more info.
 -S::
 --symbols=::
         Only consider these symbols. CSV that understands
-        file://filename entries.
+        file://filename entries.  This option will affect the percentage of
+        the overhead column.  See --percentage for more info.
 
 --symbol-filter=::
         Only show symbols that match (partially) with this filter.
@@ -76,6 +79,15 @@ OPTIONS
         abort cost. This is the global weight.
         - local_weight: Local weight version of the weight above.
         - transaction: Transaction abort flags.
+        - overhead: Overhead percentage of sample
+        - overhead_sys: Overhead percentage of sample running in system mode
+        - overhead_us: Overhead percentage of sample running in user mode
+        - overhead_guest_sys: Overhead percentage of sample running in system mode
+        on guest machine
+        - overhead_guest_us: Overhead percentage of sample running in user mode on
+        guest machine
+        - sample: Number of sample
+        - period: Raw number of event count of sample
 
         By default, comm, dso and symbol keys are used.
         (i.e. --sort comm,dso,symbol)
@@ -95,6 +107,16 @@ OPTIONS
         And default sort keys are changed to comm, dso_from, symbol_from, dso_to
         and symbol_to, see '--branch-stack'.
 
+-F::
+--fields=::
+        Specify output field - multiple keys can be specified in CSV format.
+        Following fields are available:
+        overhead, overhead_sys, overhead_us, overhead_children, sample and period.
+        Also it can contain any sort key(s).
+
+        By default, every sort keys not specified in -F will be appended
+        automatically.
+
 -p::
 --parent=<regex>::
         A regex filter to identify parent. The parent is a caller of this
@@ -141,6 +163,11 @@ OPTIONS
 
         Default: fractal,0.5,callee,function.
 
+--children::
+        Accumulate callchain of children to parent entry so that then can
+        show up in the output.  The output will have a new "Children" column
+        and will be sorted on the data.  It requires callchains are recorded.
+
 --max-stack::
         Set the stack depth limit when parsing the callchain, anything
         beyond the specified depth will be ignored. This is a trade-off
@@ -237,6 +264,15 @@ OPTIONS
         Do not show entries which have an overhead under that percent.
         (Default: 0).
 
+--percentage::
+        Determine how to display the overhead percentage of filtered entries.
+        Filters can be applied by --comms, --dsos and/or --symbols options and
+        Zoom operations on the TUI (thread, dso, etc).
+
+        "relative" means it's relative to filtered entries only so that the
+        sum of shown entries will be always 100%.  "absolute" means it retains
+        the original value before and after the filter is applied.
+
 --header::
         Show header information in the perf.data file.  This includes
         various information like hostname, OS and perf version, cpu/mem
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 976b00c6cdb1..180ae02137a5 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -113,7 +113,17 @@ Default is to monitor all CPUS.
 -s::
 --sort::
         Sort by key(s): pid, comm, dso, symbol, parent, srcline, weight,
-        local_weight, abort, in_tx, transaction
+        local_weight, abort, in_tx, transaction, overhead, sample, period.
+        Please see description of --sort in the perf-report man page.
+
+--fields=::
+        Specify output field - multiple keys can be specified in CSV format.
+        Following fields are available:
+        overhead, overhead_sys, overhead_us, overhead_children, sample and period.
+        Also it can contain any sort key(s).
+
+        By default, every sort keys not specified in --field will be appended
+        automatically.
 
 -n::
 --show-nr-samples::
@@ -123,13 +133,16 @@ Default is to monitor all CPUS.
         Show a column with the sum of periods.
 
 --dsos::
-        Only consider symbols in these dsos.
+        Only consider symbols in these dsos.  This option will affect the
+        percentage of the overhead column.  See --percentage for more info.
 
 --comms::
-        Only consider symbols in these comms.
+        Only consider symbols in these comms.  This option will affect the
+        percentage of the overhead column.  See --percentage for more info.
 
 --symbols::
-        Only consider these symbols.
+        Only consider these symbols.  This option will affect the
+        percentage of the overhead column.  See --percentage for more info.
 
 -M::
 --disassembler-style=:: Set disassembler style for objdump.
@@ -148,6 +161,12 @@ Default is to monitor all CPUS.
         Setup and enable call-graph (stack chain/backtrace) recording,
         implies -g.
 
+--children::
+        Accumulate callchain of children to parent entry so that then can
+        show up in the output.  The output will have a new "Children" column
+        and will be sorted on the data.  It requires -g/--call-graph option
+        enabled.
+
 --max-stack::
         Set the stack depth limit when parsing the callchain, anything
         beyond the specified depth will be ignored. This is a trade-off
@@ -165,6 +184,15 @@ Default is to monitor all CPUS.
         Do not show entries which have an overhead under that percent.
         (Default: 0).
 
+--percentage::
+        Determine how to display the overhead percentage of filtered entries.
+        Filters can be applied by --comms, --dsos and/or --symbols options and
+        Zoom operations on the TUI (thread, dso, etc).
+
+        "relative" means it's relative to filtered entries only so that the
+        sum of shown entries will be always 100%. "absolute" means it retains
+        the original value before and after the filter is applied.
+
 INTERACTIVE PROMPTING KEYS
 --------------------------
 
@@ -200,4 +228,4 @@ Pressing any unmapped key displays a menu, and prompts for input.
 
 SEE ALSO
 --------
-linkperf:perf-stat[1], linkperf:perf-list[1]
+linkperf:perf-stat[1], linkperf:perf-list[1], linkperf:perf-report[1]
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index c0c87c87b60f..45da209b6ed3 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -7,6 +7,8 @@ tools/lib/symbol/kallsyms.h
 tools/include/asm/bug.h
 tools/include/linux/compiler.h
 tools/include/linux/hash.h
+tools/include/linux/export.h
+tools/include/linux/types.h
 include/linux/const.h
 include/linux/perf_event.h
 include/linux/rbtree.h
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 895edd32930c..ae20edfcc3f7 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -222,12 +222,12 @@ LIB_H += util/include/linux/const.h
 LIB_H += util/include/linux/ctype.h
 LIB_H += util/include/linux/kernel.h
 LIB_H += util/include/linux/list.h
-LIB_H += util/include/linux/export.h
+LIB_H += ../include/linux/export.h
 LIB_H += util/include/linux/poison.h
 LIB_H += util/include/linux/rbtree.h
 LIB_H += util/include/linux/rbtree_augmented.h
 LIB_H += util/include/linux/string.h
-LIB_H += util/include/linux/types.h
+LIB_H += ../include/linux/types.h
 LIB_H += util/include/linux/linkage.h
 LIB_H += util/include/asm/asm-offsets.h
 LIB_H += ../include/asm/bug.h
@@ -252,7 +252,6 @@ LIB_H += util/event.h
 LIB_H += util/evsel.h
 LIB_H += util/evlist.h
 LIB_H += util/exec_cmd.h
-LIB_H += util/types.h
 LIB_H += util/levenshtein.h
 LIB_H += util/machine.h
 LIB_H += util/map.h
@@ -397,7 +396,11 @@ LIB_OBJS += $(OUTPUT)tests/rdpmc.o
 LIB_OBJS += $(OUTPUT)tests/evsel-roundtrip-name.o
 LIB_OBJS += $(OUTPUT)tests/evsel-tp-sched.o
 LIB_OBJS += $(OUTPUT)tests/pmu.o
+LIB_OBJS += $(OUTPUT)tests/hists_common.o
 LIB_OBJS += $(OUTPUT)tests/hists_link.o
+LIB_OBJS += $(OUTPUT)tests/hists_filter.o
+LIB_OBJS += $(OUTPUT)tests/hists_output.o
+LIB_OBJS += $(OUTPUT)tests/hists_cumulate.o
 LIB_OBJS += $(OUTPUT)tests/python-use.o
 LIB_OBJS += $(OUTPUT)tests/bp_signal.o
 LIB_OBJS += $(OUTPUT)tests/bp_signal_overflow.o
@@ -410,10 +413,12 @@ LIB_OBJS += $(OUTPUT)tests/code-reading.o
 LIB_OBJS += $(OUTPUT)tests/sample-parsing.o
 LIB_OBJS += $(OUTPUT)tests/parse-no-sample-id-all.o
 ifndef NO_DWARF_UNWIND
-ifeq ($(ARCH),x86)
+ifeq ($(ARCH),$(filter $(ARCH),x86 arm))
 LIB_OBJS += $(OUTPUT)tests/dwarf-unwind.o
 endif
 endif
+LIB_OBJS += $(OUTPUT)tests/mmap-thread-lookup.o
+LIB_OBJS += $(OUTPUT)tests/thread-mg-share.o
 
 BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
 BUILTIN_OBJS += $(OUTPUT)builtin-bench.o
@@ -784,8 +789,8 @@ help:
         @echo ''
         @echo 'Perf install targets:'
         @echo '  NOTE: documentation build requires asciidoc, xmlto packages to be installed'
-        @echo '  HINT: use "make prefix=<path> <install target>" to install to a particular'
-        @echo '        path like make prefix=/usr/local install install-doc'
+        @echo '  HINT: use "prefix" or "DESTDIR" to install to a particular'
+        @echo '        path like "make prefix=/usr/local install install-doc"'
         @echo '  install        - install compiled binaries'
         @echo '  install-doc    - install *all* documentation'
         @echo '  install-man    - install manpage documentation'
@@ -810,17 +815,20 @@ INSTALL_DOC_TARGETS += quick-install-doc quick-install-man quick-install-html
 $(DOC_TARGETS):
         $(QUIET_SUBDIR0)Documentation $(QUIET_SUBDIR1) $(@:doc=all)
 
+TAG_FOLDERS= . ../lib/traceevent ../lib/api ../lib/symbol
+TAG_FILES= ../../include/uapi/linux/perf_event.h
+
 TAGS:
         $(RM) TAGS
-        $(FIND) . -name '*.[hcS]' -print | xargs etags -a
+        $(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print | xargs etags -a $(TAG_FILES)
 
 tags:
         $(RM) tags
-        $(FIND) . -name '*.[hcS]' -print | xargs ctags -a
+        $(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print | xargs ctags -a $(TAG_FILES)
 
 cscope:
         $(RM) cscope*
-        $(FIND) . -name '*.[hcS]' -print | xargs cscope -b
+        $(FIND) $(TAG_FOLDERS) -name '*.[hcS]' -print | xargs cscope -b $(TAG_FILES)
 
 ### Detect prefix changes
 TRACK_CFLAGS = $(subst ','\'',$(CFLAGS)):\
diff --git a/tools/perf/arch/arm/Makefile b/tools/perf/arch/arm/Makefile
index 67e9b3d38e89..09d62153d384 100644
--- a/tools/perf/arch/arm/Makefile
+++ b/tools/perf/arch/arm/Makefile
@@ -5,3 +5,10 @@ endif
 ifndef NO_LIBUNWIND
 LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind-libunwind.o
 endif
+ifndef NO_LIBDW_DWARF_UNWIND
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind-libdw.o
+endif
+ifndef NO_DWARF_UNWIND
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/tests/regs_load.o
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/tests/dwarf-unwind.o
+endif
diff --git a/tools/perf/arch/arm/include/perf_regs.h b/tools/perf/arch/arm/include/perf_regs.h
index 2a1cfde66b69..f619c9c5a4bf 100644
--- a/tools/perf/arch/arm/include/perf_regs.h
+++ b/tools/perf/arch/arm/include/perf_regs.h
@@ -2,10 +2,15 @@
 #define ARCH_PERF_REGS_H
 
 #include <stdlib.h>
-#include "../../util/types.h"
+#include <linux/types.h>
 #include <asm/perf_regs.h>
 
+void perf_regs_load(u64 *regs);
+
 #define PERF_REGS_MASK  ((1ULL << PERF_REG_ARM_MAX) - 1)
+#define PERF_REGS_MAX   PERF_REG_ARM_MAX
+#define PERF_SAMPLE_REGS_ABI    PERF_SAMPLE_REGS_ABI_32
+
 #define PERF_REG_IP     PERF_REG_ARM_PC
 #define PERF_REG_SP     PERF_REG_ARM_SP
 
diff --git a/tools/perf/arch/arm/tests/dwarf-unwind.c b/tools/perf/arch/arm/tests/dwarf-unwind.c
new file mode 100644
index 000000000000..9f870d27cb39
--- /dev/null
+++ b/tools/perf/arch/arm/tests/dwarf-unwind.c
@@ -0,0 +1,60 @@
+#include <string.h>
+#include "perf_regs.h"
+#include "thread.h"
+#include "map.h"
+#include "event.h"
+#include "tests/tests.h"
+
+#define STACK_SIZE 8192
+
+static int sample_ustack(struct perf_sample *sample,
+                         struct thread *thread, u64 *regs)
+{
+        struct stack_dump *stack = &sample->user_stack;
+        struct map *map;
+        unsigned long sp;
+        u64 stack_size, *buf;
+
+        buf = malloc(STACK_SIZE);
+        if (!buf) {
+                pr_debug("failed to allocate sample uregs data\n");
+                return -1;
+        }
+
+        sp = (unsigned long) regs[PERF_REG_ARM_SP];
+
+        map = map_groups__find(thread->mg, MAP__VARIABLE, (u64) sp);
+        if (!map) {
+                pr_debug("failed to get stack map\n");
+                free(buf);
+                return -1;
+        }
+
+        stack_size = map->end - sp;
+        stack_size = stack_size > STACK_SIZE ? STACK_SIZE : stack_size;
+
+        memcpy(buf, (void *) sp, stack_size);
+        stack->data = (char *) buf;
+        stack->size = stack_size;
+        return 0;
+}
+
+int test__arch_unwind_sample(struct perf_sample *sample,
+                             struct thread *thread)
+{
+        struct regs_dump *regs = &sample->user_regs;
+        u64 *buf;
+
+        buf = calloc(1, sizeof(u64) * PERF_REGS_MAX);
+        if (!buf) {
+                pr_debug("failed to allocate sample uregs data\n");
+                return -1;
+        }
+
+        perf_regs_load(buf);
+        regs->abi  = PERF_SAMPLE_REGS_ABI;
+        regs->regs = buf;
+        regs->mask = PERF_REGS_MASK;
+
+        return sample_ustack(sample, thread, buf);
+}
diff --git a/tools/perf/arch/arm/tests/regs_load.S b/tools/perf/arch/arm/tests/regs_load.S
new file mode 100644
index 000000000000..e09e983946fe
--- /dev/null
+++ b/tools/perf/arch/arm/tests/regs_load.S
@@ -0,0 +1,58 @@
+#include <linux/linkage.h>
+
+#define R0 0x00
+#define R1 0x08
+#define R2 0x10
+#define R3 0x18
+#define R4 0x20
+#define R5 0x28
+#define R6 0x30
+#define R7 0x38
+#define R8 0x40
+#define R9 0x48
+#define SL 0x50
+#define FP 0x58
+#define IP 0x60
+#define SP 0x68
+#define LR 0x70
+#define PC 0x78
+
+/*
+ * Implementation of void perf_regs_load(u64 *regs);
+ *
+ * This functions fills in the 'regs' buffer from the actual registers values,
+ * in the way the perf built-in unwinding test expects them:
+ * - the PC at the time at the call to this function. Since this function
+ *   is called using a bl instruction, the PC value is taken from LR.
+ * The built-in unwinding test then unwinds the call stack from the dwarf
+ * information in unwind__get_entries.
+ *
+ * Notes:
+ * - the 8 bytes stride in the registers offsets comes from the fact
+ * that the registers are stored in an u64 array (u64 *regs),
+ * - the regs buffer needs to be zeroed before the call to this function,
+ * in this case using a calloc in dwarf-unwind.c.
+ */
+
+.text
+.type perf_regs_load,%function
+ENTRY(perf_regs_load)
+        str r0, [r0, #R0]
+        str r1, [r0, #R1]
+        str r2, [r0, #R2]
+        str r3, [r0, #R3]
+        str r4, [r0, #R4]
+        str r5, [r0, #R5]
+        str r6, [r0, #R6]
+        str r7, [r0, #R7]
+        str r8, [r0, #R8]
+        str r9, [r0, #R9]
+        str sl, [r0, #SL]
+        str fp, [r0, #FP]
+        str ip, [r0, #IP]
+        str sp, [r0, #SP]
+        str lr, [r0, #LR]
+        str lr, [r0, #PC]       // store pc as lr in order to skip the call
+                                //  to this function
+        mov pc, lr
+ENDPROC(perf_regs_load)
diff --git a/tools/perf/arch/arm/util/unwind-libdw.c b/tools/perf/arch/arm/util/unwind-libdw.c
new file mode 100644
index 000000000000..b4176c60117a
--- /dev/null
+++ b/tools/perf/arch/arm/util/unwind-libdw.c
@@ -0,0 +1,36 @@
+#include <elfutils/libdwfl.h>
+#include "../../util/unwind-libdw.h"
+#include "../../util/perf_regs.h"
+
+bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
+{
+        struct unwind_info *ui = arg;
+        struct regs_dump *user_regs = &ui->sample->user_regs;
+        Dwarf_Word dwarf_regs[PERF_REG_ARM_MAX];
+
+#define REG(r) ({                                               \
+        Dwarf_Word val = 0;                                     \
+        perf_reg_value(&val, user_regs, PERF_REG_ARM_##r);      \
+        val;                                                    \
+})
+
+        dwarf_regs[0]  = REG(R0);
+        dwarf_regs[1]  = REG(R1);
+        dwarf_regs[2]  = REG(R2);
+        dwarf_regs[3]  = REG(R3);
+        dwarf_regs[4]  = REG(R4);
+        dwarf_regs[5]  = REG(R5);
+        dwarf_regs[6]  = REG(R6);
+        dwarf_regs[7]  = REG(R7);
+        dwarf_regs[8]  = REG(R8);
+        dwarf_regs[9]  = REG(R9);
+        dwarf_regs[10] = REG(R10);
+        dwarf_regs[11] = REG(FP);
+        dwarf_regs[12] = REG(IP);
+        dwarf_regs[13] = REG(SP);
+        dwarf_regs[14] = REG(LR);
+        dwarf_regs[15] = REG(PC);
+
+        return dwfl_thread_state_registers(thread, 0, PERF_REG_ARM_MAX,
+                                           dwarf_regs);
+}
diff --git a/tools/perf/arch/arm64/Makefile b/tools/perf/arch/arm64/Makefile
new file mode 100644
index 000000000000..67e9b3d38e89
--- /dev/null
+++ b/tools/perf/arch/arm64/Makefile
@@ -0,0 +1,7 @@
+ifndef NO_DWARF
+PERF_HAVE_DWARF_REGS := 1
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
+endif
+ifndef NO_LIBUNWIND
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind-libunwind.o
+endif
diff --git a/tools/perf/arch/arm64/include/perf_regs.h b/tools/perf/arch/arm64/include/perf_regs.h
new file mode 100644
index 000000000000..e9441b9e2a30
--- /dev/null
+++ b/tools/perf/arch/arm64/include/perf_regs.h
@@ -0,0 +1,88 @@
+#ifndef ARCH_PERF_REGS_H
+#define ARCH_PERF_REGS_H
+
+#include <stdlib.h>
+#include <linux/types.h>
+#include <asm/perf_regs.h>
+
+#define PERF_REGS_MASK  ((1ULL << PERF_REG_ARM64_MAX) - 1)
+#define PERF_REG_IP     PERF_REG_ARM64_PC
+#define PERF_REG_SP     PERF_REG_ARM64_SP
+
+static inline const char *perf_reg_name(int id)
+{
+        switch (id) {
+        case PERF_REG_ARM64_X0:
+                return "x0";
+        case PERF_REG_ARM64_X1:
+                return "x1";
+        case PERF_REG_ARM64_X2:
+                return "x2";
+        case PERF_REG_ARM64_X3:
+                return "x3";
+        case PERF_REG_ARM64_X4:
+                return "x4";
+        case PERF_REG_ARM64_X5:
+                return "x5";
+        case PERF_REG_ARM64_X6:
+                return "x6";
+        case PERF_REG_ARM64_X7:
+                return "x7";
+        case PERF_REG_ARM64_X8:
+                return "x8";
+        case PERF_REG_ARM64_X9:
+                return "x9";
+        case PERF_REG_ARM64_X10:
+                return "x10";
+        case PERF_REG_ARM64_X11:
+                return "x11";
+        case PERF_REG_ARM64_X12:
+                return "x12";
+        case PERF_REG_ARM64_X13:
+                return "x13";
+        case PERF_REG_ARM64_X14:
+                return "x14";
+        case PERF_REG_ARM64_X15:
+                return "x15";
+        case PERF_REG_ARM64_X16:
+                return "x16";
+        case PERF_REG_ARM64_X17:
+                return "x17";
+        case PERF_REG_ARM64_X18:
+                return "x18";
+        case PERF_REG_ARM64_X19:
+                return "x19";
+        case PERF_REG_ARM64_X20:
+                return "x20";
+        case PERF_REG_ARM64_X21:
+                return "x21";
+        case PERF_REG_ARM64_X22:
+                return "x22";
+        case PERF_REG_ARM64_X23:
+                return "x23";
+        case PERF_REG_ARM64_X24:
+                return "x24";
+        case PERF_REG_ARM64_X25:
+                return "x25";
+        case PERF_REG_ARM64_X26:
+                return "x26";
+        case PERF_REG_ARM64_X27:
+                return "x27";
+        case PERF_REG_ARM64_X28:
+                return "x28";
+        case PERF_REG_ARM64_X29:
+                return "x29";
+        case PERF_REG_ARM64_SP:
+                return "sp";
+        case PERF_REG_ARM64_LR:
+                return "lr";
+        case PERF_REG_ARM64_PC:
+                return "pc";
+        default:
+                return NULL;
+        }
+
+        return NULL;
+}
+
+#endif /* ARCH_PERF_REGS_H */
diff --git a/tools/perf/arch/arm64/util/dwarf-regs.c b/tools/perf/arch/arm64/util/dwarf-regs.c
new file mode 100644
index 000000000000..d49efeb8172e
--- /dev/null
+++ b/tools/perf/arch/arm64/util/dwarf-regs.c
@@ -0,0 +1,80 @@
+/*
+ * Mapping of DWARF debug register numbers into register names.
+ *
+ * Copyright (C) 2010 Will Deacon, ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <stddef.h>
+#include <dwarf-regs.h>
+
+struct pt_regs_dwarfnum {
+        const char *name;
+        unsigned int dwarfnum;
+};
+
+#define STR(s) #s
+#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num}
+#define GPR_DWARFNUM_NAME(num) \
+        {.name = STR(%x##num), .dwarfnum = num}
+#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
+
+/*
+ * Reference:
+ * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0057b/IHI0057B_aadwarf64.pdf
+ */
+static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
+        GPR_DWARFNUM_NAME(0),
+        GPR_DWARFNUM_NAME(1),
+        GPR_DWARFNUM_NAME(2),
+        GPR_DWARFNUM_NAME(3),
+        GPR_DWARFNUM_NAME(4),
+        GPR_DWARFNUM_NAME(5),
+        GPR_DWARFNUM_NAME(6),
+        GPR_DWARFNUM_NAME(7),
+        GPR_DWARFNUM_NAME(8),
+        GPR_DWARFNUM_NAME(9),
+        GPR_DWARFNUM_NAME(10),
+        GPR_DWARFNUM_NAME(11),
+        GPR_DWARFNUM_NAME(12),
+        GPR_DWARFNUM_NAME(13),
+        GPR_DWARFNUM_NAME(14),
+        GPR_DWARFNUM_NAME(15),
+        GPR_DWARFNUM_NAME(16),
+        GPR_DWARFNUM_NAME(17),
+        GPR_DWARFNUM_NAME(18),
+        GPR_DWARFNUM_NAME(19),
+        GPR_DWARFNUM_NAME(20),
+        GPR_DWARFNUM_NAME(21),
+        GPR_DWARFNUM_NAME(22),
+        GPR_DWARFNUM_NAME(23),
+        GPR_DWARFNUM_NAME(24),
+        GPR_DWARFNUM_NAME(25),
+        GPR_DWARFNUM_NAME(26),
+        GPR_DWARFNUM_NAME(27),
+        GPR_DWARFNUM_NAME(28),
+        GPR_DWARFNUM_NAME(29),
+        REG_DWARFNUM_NAME("%lr", 30),
+        REG_DWARFNUM_NAME("%sp", 31),
+        REG_DWARFNUM_END,
+};
+
+/**
+ * get_arch_regstr() - lookup register name from it's DWARF register number
+ * @n:  the DWARF register number
+ *
+ * get_arch_regstr() returns the name of the register in struct
+ * regdwarfnum_table from it's DWARF register number. If the register is not
+ * found in the table, this returns NULL;
+ */
+const char *get_arch_regstr(unsigned int n)
+{
+        const struct pt_regs_dwarfnum *roff;
+        for (roff = regdwarfnum_table; roff->name != NULL; roff++)
+                if (roff->dwarfnum == n)
+                        return roff->name;
+        return NULL;
+}
diff --git a/tools/perf/arch/arm64/util/unwind-libunwind.c b/tools/perf/arch/arm64/util/unwind-libunwind.c
new file mode 100644
index 000000000000..436ee43859dc
--- /dev/null
+++ b/tools/perf/arch/arm64/util/unwind-libunwind.c
@@ -0,0 +1,82 @@
+
+#include <errno.h>
+#include <libunwind.h>
+#include "perf_regs.h"
+#include "../../util/unwind.h"
+
+int libunwind__arch_reg_id(int regnum)
+{
+        switch (regnum) {
+        case UNW_AARCH64_X0:
+                return PERF_REG_ARM64_X0;
+        case UNW_AARCH64_X1:
+                return PERF_REG_ARM64_X1;
+        case UNW_AARCH64_X2:
+                return PERF_REG_ARM64_X2;
+        case UNW_AARCH64_X3:
+                return PERF_REG_ARM64_X3;
+        case UNW_AARCH64_X4:
+                return PERF_REG_ARM64_X4;
+        case UNW_AARCH64_X5:
+                return PERF_REG_ARM64_X5;
+        case UNW_AARCH64_X6:
+                return PERF_REG_ARM64_X6;
+        case UNW_AARCH64_X7:
+                return PERF_REG_ARM64_X7;
+        case UNW_AARCH64_X8:
+                return PERF_REG_ARM64_X8;
+        case UNW_AARCH64_X9:
+                return PERF_REG_ARM64_X9;
+        case UNW_AARCH64_X10:
+                return PERF_REG_ARM64_X10;
+        case UNW_AARCH64_X11:
+                return PERF_REG_ARM64_X11;
+        case UNW_AARCH64_X12:
+                return PERF_REG_ARM64_X12;
+        case UNW_AARCH64_X13:
+                return PERF_REG_ARM64_X13;
+        case UNW_AARCH64_X14:
+                return PERF_REG_ARM64_X14;
+        case UNW_AARCH64_X15:
+                return PERF_REG_ARM64_X15;
+        case UNW_AARCH64_X16:
+                return PERF_REG_ARM64_X16;
+        case UNW_AARCH64_X17:
+                return PERF_REG_ARM64_X17;
+        case UNW_AARCH64_X18:
+                return PERF_REG_ARM64_X18;
+        case UNW_AARCH64_X19:
+                return PERF_REG_ARM64_X19;
+        case UNW_AARCH64_X20:
+                return PERF_REG_ARM64_X20;
+        case UNW_AARCH64_X21:
+                return PERF_REG_ARM64_X21;
+        case UNW_AARCH64_X22:
+                return PERF_REG_ARM64_X22;
+        case UNW_AARCH64_X23:
+                return PERF_REG_ARM64_X23;
+        case UNW_AARCH64_X24:
+                return PERF_REG_ARM64_X24;
+        case UNW_AARCH64_X25:
+                return PERF_REG_ARM64_X25;
+        case UNW_AARCH64_X26:
+                return PERF_REG_ARM64_X26;
+        case UNW_AARCH64_X27:
+                return PERF_REG_ARM64_X27;
+        case UNW_AARCH64_X28:
+                return PERF_REG_ARM64_X28;
+        case UNW_AARCH64_X29:
+                return PERF_REG_ARM64_X29;
+        case UNW_AARCH64_X30:
+                return PERF_REG_ARM64_LR;
+        case UNW_AARCH64_SP:
+                return PERF_REG_ARM64_SP;
+        case UNW_AARCH64_PC:
+                return PERF_REG_ARM64_PC;
+        default:
+                pr_err("unwind: invalid reg id %d\n", regnum);
+                return -EINVAL;
+        }
+
+        return -EINVAL;
+}
diff --git a/tools/perf/arch/x86/include/perf_regs.h b/tools/perf/arch/x86/include/perf_regs.h
index fc819ca34a7e..7df517acfef8 100644
--- a/tools/perf/arch/x86/include/perf_regs.h
+++ b/tools/perf/arch/x86/include/perf_regs.h
@@ -2,7 +2,7 @@
 #define ARCH_PERF_REGS_H
 
 #include <stdlib.h>
-#include "../../util/types.h"
+#include <linux/types.h>
 #include <asm/perf_regs.h>
 
 void perf_regs_load(u64 *regs);
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
index 83bc2385e6d3..9f89f899ccc7 100644
--- a/tools/perf/arch/x86/tests/dwarf-unwind.c
+++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
@@ -23,7 +23,7 @@ static int sample_ustack(struct perf_sample *sample,
 
         sp = (unsigned long) regs[PERF_REG_X86_SP];
 
-        map = map_groups__find(&thread->mg, MAP__VARIABLE, (u64) sp);
+        map = map_groups__find(thread->mg, MAP__VARIABLE, (u64) sp);
         if (!map) {
                 pr_debug("failed to get stack map\n");
                 free(buf);
diff --git a/tools/perf/arch/x86/util/tsc.c b/tools/perf/arch/x86/util/tsc.c
index b2519e49424f..40021fa3129b 100644
--- a/tools/perf/arch/x86/util/tsc.c
+++ b/tools/perf/arch/x86/util/tsc.c
@@ -4,7 +4,7 @@
 #include <linux/perf_event.h>
 
 #include "../../perf.h"
-#include "../../util/types.h"
+#include <linux/types.h>
 #include "../../util/debug.h"
 #include "tsc.h"
 
diff --git a/tools/perf/arch/x86/util/tsc.h b/tools/perf/arch/x86/util/tsc.h
index a24dec81c795..2affe0366b59 100644
--- a/tools/perf/arch/x86/util/tsc.h
+++ b/tools/perf/arch/x86/util/tsc.h
@@ -1,7 +1,7 @@
 #ifndef TOOLS_PERF_ARCH_X86_UTIL_TSC_H__
 #define TOOLS_PERF_ARCH_X86_UTIL_TSC_H__
 
-#include "../../util/types.h"
+#include <linux/types.h>
 
 struct perf_tsc_conversion {
         u16 time_shift;
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 0da603b79b61..1ec429fef2be 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -46,7 +46,7 @@ struct perf_annotate {
 };
 
 static int perf_evsel__add_sample(struct perf_evsel *evsel,
-                                  struct perf_sample *sample,
+                                  struct perf_sample *sample __maybe_unused,
                                   struct addr_location *al,
                                   struct perf_annotate *ann)
 {
@@ -65,13 +65,13 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel,
                 return 0;
         }
 
-        he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL, 1, 1, 0);
+        he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL, 1, 1, 0,
+                                true);
         if (he == NULL)
                 return -ENOMEM;
 
         ret = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
-        evsel->hists.stats.total_period += sample->period;
-        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
+        hists__inc_nr_samples(&evsel->hists, true);
         return ret;
 }
 
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 204fffe22532..9a5a035cb426 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -60,7 +60,6 @@ static int data__files_cnt;
 #define data__for_each_file(i, d) data__for_each_file_start(i, d, 0)
 #define data__for_each_file_new(i, d) data__for_each_file_start(i, d, 1)
 
-static char diff__default_sort_order[] = "dso,symbol";
 static bool force;
 static bool show_period;
 static bool show_formula;
@@ -220,7 +219,8 @@ static int setup_compute(const struct option *opt, const char *str,
 
 static double period_percent(struct hist_entry *he, u64 period)
 {
-        u64 total = he->hists->stats.total_period;
+        u64 total = hists__total_period(he->hists);
+
         return (period * 100.0) / total;
 }
 
@@ -259,11 +259,18 @@ static s64 compute_wdiff(struct hist_entry *he, struct hist_entry *pair)
 static int formula_delta(struct hist_entry *he, struct hist_entry *pair,
                          char *buf, size_t size)
 {
+        u64 he_total = he->hists->stats.total_period;
+        u64 pair_total = pair->hists->stats.total_period;
+
+        if (symbol_conf.filter_relative) {
+                he_total = he->hists->stats.total_non_filtered_period;
+                pair_total = pair->hists->stats.total_non_filtered_period;
+        }
         return scnprintf(buf, size,
                          "(%" PRIu64 " * 100 / %" PRIu64 ") - "
                          "(%" PRIu64 " * 100 / %" PRIu64 ")",
-                          pair->stat.period, pair->hists->stats.total_period,
-                          he->stat.period, he->hists->stats.total_period);
+                         pair->stat.period, pair_total,
+                         he->stat.period, he_total);
 }
 
 static int formula_ratio(struct hist_entry *he, struct hist_entry *pair,
@@ -308,7 +315,7 @@ static int hists__add_entry(struct hists *hists,
                             u64 weight, u64 transaction)
 {
         if (__hists__add_entry(hists, al, NULL, NULL, NULL, period, weight,
-                               transaction) != NULL)
+                               transaction, true) != NULL)
                 return 0;
         return -ENOMEM;
 }
@@ -327,16 +334,22 @@ static int diff__process_sample_event(struct perf_tool *tool __maybe_unused,
                 return -1;
         }
 
-        if (al.filtered)
-                return 0;
-
         if (hists__add_entry(&evsel->hists, &al, sample->period,
                              sample->weight, sample->transaction)) {
                 pr_warning("problem incrementing symbol period, skipping event\n");
                 return -1;
         }
 
+        /*
+         * The total_period is updated here before going to the output
+         * tree since normally only the baseline hists will call
+         * hists__output_resort() and precompute needs the total
+         * period in order to sort entries by percentage delta.
+         */
         evsel->hists.stats.total_period += sample->period;
+        if (!al.filtered)
+                evsel->hists.stats.total_non_filtered_period += sample->period;
+
         return 0;
 }
 
@@ -564,8 +577,7 @@ static void hists__compute_resort(struct hists *hists)
         hists->entries = RB_ROOT;
         next = rb_first(root);
 
-        hists->nr_entries = 0;
-        hists->stats.total_period = 0;
+        hists__reset_stats(hists);
         hists__reset_col_len(hists);
 
         while (next != NULL) {
@@ -575,7 +587,10 @@ static void hists__compute_resort(struct hists *hists)
                 next = rb_next(&he->rb_node_in);
 
                 insert_hist_entry_by_compute(&hists->entries, he, compute);
-                hists__inc_nr_entries(hists, he);
+                hists__inc_stats(hists, he);
+
+                if (!he->filtered)
+                        hists__calc_col_len(hists, he);
         }
 }
 
@@ -725,20 +740,24 @@ static const struct option options[] = {
         OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
                    "only consider these symbols"),
         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
-                   "sort by key(s): pid, comm, dso, symbol, parent"),
+                   "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
+                   " Please refer the man page for the complete list."),
         OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
                    "separator for columns, no spaces will be added between "
                    "columns '.' is reserved."),
         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
                     "Look for files with symbols relative to this directory"),
         OPT_UINTEGER('o', "order", &sort_compute, "Specify compute sorting."),
+        OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
+                     "How to display percentage of filtered entries", parse_filter_percentage),
         OPT_END()
 };
 
 static double baseline_percent(struct hist_entry *he)
 {
-        struct hists *hists = he->hists;
-        return 100.0 * he->stat.period / hists->stats.total_period;
+        u64 total = hists__total_period(he->hists);
+
+        return 100.0 * he->stat.period / total;
 }
 
 static int hpp__color_baseline(struct perf_hpp_fmt *fmt,
@@ -1120,7 +1139,8 @@ static int data_init(int argc, const char **argv)
 
 int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
 {
-        sort_order = diff__default_sort_order;
+        perf_config(perf_default_config, NULL);
+
         argc = parse_options(argc, argv, options, diff_usage, 0);
 
         if (symbol__init() < 0)
@@ -1131,6 +1151,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix __maybe_unused)
 
         ui_init();
 
+        sort__mode = SORT_MODE__DIFF;
+
         if (setup_sorting() < 0)
                 usage_with_options(diff_usage, options);
 
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 3a7387551369..6a3af0013d68 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -209,7 +209,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
 
         cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
-        thread = machine__findnew_thread(machine, sample->pid, sample->pid);
+        thread = machine__findnew_thread(machine, sample->pid, sample->tid);
         if (thread == NULL) {
                 pr_err("problem processing %d event, skipping it.\n",
                        event->header.type);
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 929462aa4943..bef3376bfaf3 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -14,6 +14,7 @@
 #include "util/parse-options.h"
 #include "util/trace-event.h"
 #include "util/data.h"
+#include "util/cpumap.h"
 
 #include "util/debug.h"
 
@@ -31,9 +32,6 @@ static int			caller_lines = -1;
 
 static bool                     raw_ip;
 
-static int                      *cpunode_map;
-static int                      max_cpu_num;
-
 struct alloc_stat {
         u64     call_site;
         u64     ptr;
@@ -55,76 +53,6 @@ static struct rb_root root_caller_sorted;
 static unsigned long total_requested, total_allocated;
 static unsigned long nr_allocs, nr_cross_allocs;
 
-#define PATH_SYS_NODE   "/sys/devices/system/node"
-
-static int init_cpunode_map(void)
-{
-        FILE *fp;
-        int i, err = -1;
-
-        fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
-        if (!fp) {
-                max_cpu_num = 4096;
-                return 0;
-        }
-
-        if (fscanf(fp, "%d", &max_cpu_num) < 1) {
-                pr_err("Failed to read 'kernel_max' from sysfs");
-                goto out_close;
-        }
-
-        max_cpu_num++;
-
-        cpunode_map = calloc(max_cpu_num, sizeof(int));
-        if (!cpunode_map) {
-                pr_err("%s: calloc failed\n", __func__);
-                goto out_close;
-        }
-
-        for (i = 0; i < max_cpu_num; i++)
-                cpunode_map[i] = -1;
-
-        err = 0;
-out_close:
-        fclose(fp);
-        return err;
-}
-
-static int setup_cpunode_map(void)
-{
-        struct dirent *dent1, *dent2;
-        DIR *dir1, *dir2;
-        unsigned int cpu, mem;
-        char buf[PATH_MAX];
-
-        if (init_cpunode_map())
-                return -1;
-
-        dir1 = opendir(PATH_SYS_NODE);
-        if (!dir1)
-                return 0;
-
-        while ((dent1 = readdir(dir1)) != NULL) {
-                if (dent1->d_type != DT_DIR ||
-                    sscanf(dent1->d_name, "node%u", &mem) < 1)
-                        continue;
-
-                snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
-                dir2 = opendir(buf);
-                if (!dir2)
-                        continue;
-                while ((dent2 = readdir(dir2)) != NULL) {
-                        if (dent2->d_type != DT_LNK ||
-                            sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
-                                continue;
-                        cpunode_map[cpu] = mem;
-                }
-                closedir(dir2);
-        }
-        closedir(dir1);
-        return 0;
-}
-
 static int insert_alloc_stat(unsigned long call_site, unsigned long ptr,
                              int bytes_req, int bytes_alloc, int cpu)
 {
@@ -235,7 +163,7 @@ static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel,
         int ret = perf_evsel__process_alloc_event(evsel, sample);
 
         if (!ret) {
-                int node1 = cpunode_map[sample->cpu],
+                int node1 = cpu__get_node(sample->cpu),
                     node2 = perf_evsel__intval(evsel, sample, "node");
 
                 if (node1 != node2)
@@ -307,7 +235,7 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused,
                                 struct machine *machine)
 {
         struct thread *thread = machine__findnew_thread(machine, sample->pid,
-                                                        sample->pid);
+                                                        sample->tid);
 
         if (thread == NULL) {
                 pr_debug("problem processing %d event, skipping it.\n",
@@ -756,11 +684,13 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
         OPT_END()
         };
-        const char * const kmem_usage[] = {
-                "perf kmem [<options>] {record|stat}",
+        const char *const kmem_subcommands[] = { "record", "stat", NULL };
+        const char *kmem_usage[] = {
+                NULL,
                 NULL
         };
-        argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
+        argc = parse_options_subcommand(argc, argv, kmem_options,
+                                        kmem_subcommands, kmem_usage, 0);
 
         if (!argc)
                 usage_with_options(kmem_usage, kmem_options);
@@ -770,7 +700,7 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
         if (!strncmp(argv[0], "rec", 3)) {
                 return __cmd_record(argc, argv);
         } else if (!strcmp(argv[0], "stat")) {
-                if (setup_cpunode_map())
+                if (cpu__setup_cpunode_map())
                         return -1;
 
                 if (list_empty(&caller_sort))
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index c852c7a85d32..6148afc995c6 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -961,8 +961,10 @@ int cmd_lock(int argc, const char **argv, const char *prefix __maybe_unused)
                 "perf lock info [<options>]",
                 NULL
         };
-        const char * const lock_usage[] = {
-                "perf lock [<options>] {record|report|script|info}",
+        const char *const lock_subcommands[] = { "record", "report", "script",
+                                                 "info", NULL };
+        const char *lock_usage[] = {
+                NULL,
                 NULL
         };
         const char * const report_usage[] = {
@@ -976,8 +978,8 @@ int cmd_lock(int argc, const char **argv, const char *prefix __maybe_unused)
         for (i = 0; i < LOCKHASH_SIZE; i++)
                 INIT_LIST_HEAD(lockhash_table + i);
 
-        argc = parse_options(argc, argv, lock_options, lock_usage,
-                             PARSE_OPT_STOP_AT_NON_OPTION);
+        argc = parse_options_subcommand(argc, argv, lock_options, lock_subcommands,
+                                        lock_usage, PARSE_OPT_STOP_AT_NON_OPTION);
         if (!argc)
                 usage_with_options(lock_usage, lock_options);
 
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 2e3ade69a58e..4a1a6c94a5eb 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -21,11 +21,6 @@ struct perf_mem {
         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 };
 
-static const char * const mem_usage[] = {
-        "perf mem [<options>] {record <command> |report}",
-        NULL
-};
-
 static int __cmd_record(int argc, const char **argv)
 {
         int rec_argc, i = 0, j;
@@ -220,9 +215,15 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
                    " between columns '.' is reserved."),
         OPT_END()
         };
+        const char *const mem_subcommands[] = { "record", "report", NULL };
+        const char *mem_usage[] = {
+                NULL,
+                NULL
+        };
+
 
-        argc = parse_options(argc, argv, mem_options, mem_usage,
-                             PARSE_OPT_STOP_AT_NON_OPTION);
+        argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands,
+                                        mem_usage, PARSE_OPT_STOP_AT_NON_OPTION);
 
         if (!argc || !(strncmp(argv[0], "rec", 3) || mem_operation))
                 usage_with_options(mem_usage, mem_options);
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 8ce62ef7f6c3..378b85b731a7 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -30,37 +30,6 @@
 #include <sched.h>
 #include <sys/mman.h>
 
-#ifndef HAVE_ON_EXIT_SUPPORT
-#ifndef ATEXIT_MAX
-#define ATEXIT_MAX 32
-#endif
-static int __on_exit_count = 0;
-typedef void (*on_exit_func_t) (int, void *);
-static on_exit_func_t __on_exit_funcs[ATEXIT_MAX];
-static void *__on_exit_args[ATEXIT_MAX];
-static int __exitcode = 0;
-static void __handle_on_exit_funcs(void);
-static int on_exit(on_exit_func_t function, void *arg);
-#define exit(x) (exit)(__exitcode = (x))
-
-static int on_exit(on_exit_func_t function, void *arg)
-{
-        if (__on_exit_count == ATEXIT_MAX)
-                return -ENOMEM;
-        else if (__on_exit_count == 0)
-                atexit(__handle_on_exit_funcs);
-        __on_exit_funcs[__on_exit_count] = function;
-        __on_exit_args[__on_exit_count++] = arg;
-        return 0;
-}
-
-static void __handle_on_exit_funcs(void)
-{
-        int i;
-        for (i = 0; i < __on_exit_count; i++)
-                __on_exit_funcs[i] (__exitcode, __on_exit_args[i]);
-}
-#endif
 
 struct record {
         struct perf_tool        tool;
@@ -147,29 +116,19 @@ static void sig_handler(int sig)
 {
         if (sig == SIGCHLD)
                 child_finished = 1;
+        else
+                signr = sig;
 
         done = 1;
-        signr = sig;
 }
 
-static void record__sig_exit(int exit_status __maybe_unused, void *arg)
+static void record__sig_exit(void)
 {
-        struct record *rec = arg;
-        int status;
-
-        if (rec->evlist->workload.pid > 0) {
-                if (!child_finished)
-                        kill(rec->evlist->workload.pid, SIGTERM);
-
-                wait(&status);
-                if (WIFSIGNALED(status))
-                        psignal(WTERMSIG(status), rec->progname);
-        }
-
-        if (signr == -1 || signr == SIGUSR1)
+        if (signr == -1)
                 return;
 
         signal(signr, SIG_DFL);
+        raise(signr);
 }
 
 static int record__open(struct record *rec)
@@ -243,27 +202,6 @@ static int process_buildids(struct record *rec)
                                               size, &build_id__mark_dso_hit_ops);
 }
 
-static void record__exit(int status, void *arg)
-{
-        struct record *rec = arg;
-        struct perf_data_file *file = &rec->file;
-
-        if (status != 0)
-                return;
-
-        if (!file->is_pipe) {
-                rec->session->header.data_size += rec->bytes_written;
-
-                if (!rec->no_buildid)
-                        process_buildids(rec);
-                perf_session__write_header(rec->session, rec->evlist,
-                                           file->fd, true);
-                perf_session__delete(rec->session);
-                perf_evlist__delete(rec->evlist);
-                symbol__exit();
-        }
-}
-
 static void perf_event__synthesize_guest_os(struct machine *machine, void *data)
 {
         int err;
@@ -344,18 +282,19 @@ static volatile int workload_exec_errno;
  * if the fork fails, since we asked by setting its
  * want_signal to true.
  */
-static void workload_exec_failed_signal(int signo, siginfo_t *info,
+static void workload_exec_failed_signal(int signo __maybe_unused,
+                                        siginfo_t *info,
                                         void *ucontext __maybe_unused)
 {
         workload_exec_errno = info->si_value.sival_int;
         done = 1;
-        signr = signo;
         child_finished = 1;
 }
 
 static int __cmd_record(struct record *rec, int argc, const char **argv)
 {
         int err;
+        int status = 0;
         unsigned long waking = 0;
         const bool forks = argc > 0;
         struct machine *machine;
@@ -367,7 +306,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 
         rec->progname = argv[0];
 
-        on_exit(record__sig_exit, rec);
+        atexit(record__sig_exit);
         signal(SIGCHLD, sig_handler);
         signal(SIGINT, sig_handler);
         signal(SIGTERM, sig_handler);
@@ -388,32 +327,28 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                                                     workload_exec_failed_signal);
                 if (err < 0) {
                         pr_err("Couldn't run the workload!\n");
+                        status = err;
                         goto out_delete_session;
                 }
         }
 
         if (record__open(rec) != 0) {
                 err = -1;
-                goto out_delete_session;
+                goto out_child;
         }
 
         if (!rec->evlist->nr_groups)
                 perf_header__clear_feat(&session->header, HEADER_GROUP_DESC);
 
-        /*
-         * perf_session__delete(session) will be called at record__exit()
-         */
-        on_exit(record__exit, rec);
-
         if (file->is_pipe) {
                 err = perf_header__write_pipe(file->fd);
                 if (err < 0)
-                        goto out_delete_session;
+                        goto out_child;
         } else {
                 err = perf_session__write_header(session, rec->evlist,
                                                  file->fd, false);
                 if (err < 0)
-                        goto out_delete_session;
+                        goto out_child;
         }
 
         if (!rec->no_buildid
@@ -421,7 +356,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                 pr_err("Couldn't generate buildids. "
                        "Use --no-buildid to profile anyway.\n");
                 err = -1;
-                goto out_delete_session;
+                goto out_child;
         }
 
         machine = &session->machines.host;
@@ -431,7 +366,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                                                    process_synthesized_event);
                 if (err < 0) {
                         pr_err("Couldn't synthesize attrs.\n");
-                        goto out_delete_session;
+                        goto out_child;
                 }
 
                 if (have_tracepoints(&rec->evlist->entries)) {
@@ -447,7 +382,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                                                                   process_synthesized_event);
                         if (err <= 0) {
                                 pr_err("Couldn't record tracing data.\n");
-                                goto out_delete_session;
+                                goto out_child;
                         }
                         rec->bytes_written += err;
                 }
@@ -475,7 +410,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
         err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads,
                                             process_synthesized_event, opts->sample_address);
         if (err != 0)
-                goto out_delete_session;
+                goto out_child;
 
         if (rec->realtime_prio) {
                 struct sched_param param;
@@ -484,7 +419,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                 if (sched_setscheduler(0, SCHED_FIFO, &param)) {
                         pr_err("Could not set realtime priority.\n");
                         err = -1;
-                        goto out_delete_session;
+                        goto out_child;
                 }
         }
 
@@ -512,13 +447,19 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 
                 if (record__mmap_read_all(rec) < 0) {
                         err = -1;
-                        goto out_delete_session;
+                        goto out_child;
                 }
 
                 if (hits == rec->samples) {
                         if (done)
                                 break;
                         err = poll(rec->evlist->pollfd, rec->evlist->nr_fds, -1);
+                        /*
+                         * Propagate error, only if there's any. Ignore positive
+                         * number of returned events and interrupt error.
+                         */
+                        if (err > 0 || (err < 0 && errno == EINTR))
+                                err = 0;
                         waking++;
                 }
 
@@ -538,28 +479,52 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
                 const char *emsg = strerror_r(workload_exec_errno, msg, sizeof(msg));
                 pr_err("Workload failed: %s\n", emsg);
                 err = -1;
-                goto out_delete_session;
+                goto out_child;
         }
 
-        if (quiet || signr == SIGUSR1)
-                return 0;
+        if (!quiet) {
+                fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
 
-        fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
+                /*
+                 * Approximate RIP event size: 24 bytes.
+                 */
+                fprintf(stderr,
+                        "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n",
+                        (double)rec->bytes_written / 1024.0 / 1024.0,
+                        file->path,
+                        rec->bytes_written / 24);
+        }
 
-        /*
-         * Approximate RIP event size: 24 bytes.
-         */
-        fprintf(stderr,
-                "[ perf record: Captured and wrote %.3f MB %s (~%" PRIu64 " samples) ]\n",
-                (double)rec->bytes_written / 1024.0 / 1024.0,
-                file->path,
-                rec->bytes_written / 24);
+out_child:
+        if (forks) {
+                int exit_status;
 
-        return 0;
+                if (!child_finished)
+                        kill(rec->evlist->workload.pid, SIGTERM);
+
+                wait(&exit_status);
+
+                if (err < 0)
+                        status = err;
+                else if (WIFEXITED(exit_status))
+                        status = WEXITSTATUS(exit_status);
+                else if (WIFSIGNALED(exit_status))
+                        signr = WTERMSIG(exit_status);
+        } else
+                status = err;
+
+        if (!err && !file->is_pipe) {
+                rec->session->header.data_size += rec->bytes_written;
+
+                if (!rec->no_buildid)
+                        process_buildids(rec);
+                perf_session__write_header(rec->session, rec->evlist,
+                                           file->fd, true);
+        }
 
 out_delete_session:
         perf_session__delete(session);
-        return err;
+        return status;
 }
 
 #define BRANCH_OPT(n, m) \
@@ -583,6 +548,7 @@ static const struct branch_mode branch_modes[] = {
         BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
         BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
         BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
+        BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
         BRANCH_END
 };
 
@@ -988,6 +954,7 @@ int cmd_record(int argc, const char **argv, const char *prefix __maybe_unused)
 
         err = __cmd_record(&record, argc, argv);
 out_symbol_exit:
+        perf_evlist__delete(rec->evlist);
         symbol__exit();
         return err;
 }
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index c8f21137dfd8..21d830bafff3 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -57,6 +57,7 @@ struct report {
         const char              *cpu_list;
         const char              *symbol_filter_str;
         float                   min_percent;
+        u64                     nr_entries;
         DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 };
 
@@ -71,150 +72,69 @@ static int report__config(const char *var, const char *value, void *cb)
                 rep->min_percent = strtof(value, NULL);
                 return 0;
         }
+        if (!strcmp(var, "report.children")) {
+                symbol_conf.cumulate_callchain = perf_config_bool(var, value);
+                return 0;
+        }
 
         return perf_default_config(var, value, cb);
 }
 
-static int report__add_mem_hist_entry(struct report *rep, struct addr_location *al,
-                                      struct perf_sample *sample, struct perf_evsel *evsel)
+static void report__inc_stats(struct report *rep, struct hist_entry *he)
 {
-        struct symbol *parent = NULL;
-        struct hist_entry *he;
-        struct mem_info *mi, *mx;
-        uint64_t cost;
-        int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
-
-        if (err)
-                return err;
-
-        mi = sample__resolve_mem(sample, al);
-        if (!mi)
-                return -ENOMEM;
-
-        if (rep->hide_unresolved && !al->sym)
-                return 0;
-
-        cost = sample->weight;
-        if (!cost)
-                cost = 1;
-
         /*
-         * must pass period=weight in order to get the correct
-         * sorting from hists__collapse_resort() which is solely
-         * based on periods. We want sorting be done on nr_events * weight
-         * and this is indirectly achieved by passing period=weight here
-         * and the he_stat__add_period() function.
+         * The @he is either of a newly created one or an existing one
+         * merging current sample.  We only want to count a new one so
+         * checking ->nr_events being 1.
          */
-        he = __hists__add_entry(&evsel->hists, al, parent, NULL, mi,
-                                cost, cost, 0);
-        if (!he)
-                return -ENOMEM;
-
-        if (ui__has_annotation()) {
-                err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
-                if (err)
-                        goto out;
-
-                mx = he->mem_info;
-                err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
-                if (err)
-                        goto out;
-        }
-
-        evsel->hists.stats.total_period += cost;
-        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
-        err = hist_entry__append_callchain(he, sample);
-out:
-        return err;
+        if (he->stat.nr_events == 1)
+                rep->nr_entries++;
 }
 
-static int report__add_branch_hist_entry(struct report *rep, struct addr_location *al,
-                                         struct perf_sample *sample, struct perf_evsel *evsel)
+static int hist_iter__report_callback(struct hist_entry_iter *iter,
+                                      struct addr_location *al, bool single,
+                                      void *arg)
 {
-        struct symbol *parent = NULL;
-        unsigned i;
-        struct hist_entry *he;
-        struct branch_info *bi, *bx;
-        int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
-
-        if (err)
-                return err;
-
-        bi = sample__resolve_bstack(sample, al);
-        if (!bi)
-                return -ENOMEM;
-
-        for (i = 0; i < sample->branch_stack->nr; i++) {
-                if (rep->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
-                        continue;
+        int err = 0;
+        struct report *rep = arg;
+        struct hist_entry *he = iter->he;
+        struct perf_evsel *evsel = iter->evsel;
+        struct mem_info *mi;
+        struct branch_info *bi;
 
-                err = -ENOMEM;
+        report__inc_stats(rep, he);
 
-                /* overwrite the 'al' to branch-to info */
-                al->map = bi[i].to.map;
-                al->sym = bi[i].to.sym;
-                al->addr = bi[i].to.addr;
-                /*
-                 * The report shows the percentage of total branches captured
-                 * and not events sampled. Thus we use a pseudo period of 1.
-                 */
-                he = __hists__add_entry(&evsel->hists, al, parent, &bi[i], NULL,
-                                        1, 1, 0);
-                if (he) {
-                        if (ui__has_annotation()) {
-                                bx = he->branch_info;
-                                err = addr_map_symbol__inc_samples(&bx->from,
-                                                                   evsel->idx);
-                                if (err)
-                                        goto out;
-
-                                err = addr_map_symbol__inc_samples(&bx->to,
-                                                                   evsel->idx);
-                                if (err)
-                                        goto out;
-                        }
+        if (!ui__has_annotation())
+                return 0;
 
-                        evsel->hists.stats.total_period += 1;
-                        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
-                } else
+        if (sort__mode == SORT_MODE__BRANCH) {
+                bi = he->branch_info;
+                err = addr_map_symbol__inc_samples(&bi->from, evsel->idx);
+                if (err)
                         goto out;
-        }
-        err = 0;
-out:
-        free(bi);
-        return err;
-}
 
-static int report__add_hist_entry(struct report *rep, struct perf_evsel *evsel,
-                                  struct addr_location *al, struct perf_sample *sample)
-{
-        struct symbol *parent = NULL;
-        struct hist_entry *he;
-        int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
-
-        if (err)
-                return err;
+                err = addr_map_symbol__inc_samples(&bi->to, evsel->idx);
 
-        he = __hists__add_entry(&evsel->hists, al, parent, NULL, NULL,
-                                sample->period, sample->weight,
-                                sample->transaction);
-        if (he == NULL)
-                return -ENOMEM;
+        } else if (rep->mem_mode) {
+                mi = he->mem_info;
+                err = addr_map_symbol__inc_samples(&mi->daddr, evsel->idx);
+                if (err)
+                        goto out;
 
-        err = hist_entry__append_callchain(he, sample);
-        if (err)
-                goto out;
+                err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 
-        if (ui__has_annotation())
+        } else if (symbol_conf.cumulate_callchain) {
+                if (single)
+                        err = hist_entry__inc_addr_samples(he, evsel->idx,
+                                                           al->addr);
+        } else {
                 err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
+        }
 
-        evsel->hists.stats.total_period += sample->period;
-        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
 out:
         return err;
 }
 
-
 static int process_sample_event(struct perf_tool *tool,
                                 union perf_event *event,
                                 struct perf_sample *sample,
@@ -223,6 +143,10 @@ static int process_sample_event(struct perf_tool *tool,
 {
         struct report *rep = container_of(tool, struct report, tool);
         struct addr_location al;
+        struct hist_entry_iter iter = {
+                .hide_unresolved = rep->hide_unresolved,
+                .add_entry_cb = hist_iter__report_callback,
+        };
         int ret;
 
         if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
@@ -237,22 +161,23 @@ static int process_sample_event(struct perf_tool *tool,
         if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
                 return 0;
 
-        if (sort__mode == SORT_MODE__BRANCH) {
-                ret = report__add_branch_hist_entry(rep, &al, sample, evsel);
-                if (ret < 0)
-                        pr_debug("problem adding lbr entry, skipping event\n");
-        } else if (rep->mem_mode == 1) {
-                ret = report__add_mem_hist_entry(rep, &al, sample, evsel);
-                if (ret < 0)
-                        pr_debug("problem adding mem entry, skipping event\n");
-        } else {
-                if (al.map != NULL)
-                        al.map->dso->hit = 1;
+        if (sort__mode == SORT_MODE__BRANCH)
+                iter.ops = &hist_iter_branch;
+        else if (rep->mem_mode)
+                iter.ops = &hist_iter_mem;
+        else if (symbol_conf.cumulate_callchain)
+                iter.ops = &hist_iter_cumulative;
+        else
+                iter.ops = &hist_iter_normal;
+
+        if (al.map != NULL)
+                al.map->dso->hit = 1;
+
+        ret = hist_entry_iter__add(&iter, &al, evsel, sample, rep->max_stack,
+                                   rep);
+        if (ret < 0)
+                pr_debug("problem adding hist entry, skipping event\n");
 
-                ret = report__add_hist_entry(rep, evsel, &al, sample);
-                if (ret < 0)
-                        pr_debug("problem incrementing symbol period, skipping event\n");
-        }
         return ret;
 }
 
@@ -309,6 +234,14 @@ static int report__setup_sample_type(struct report *rep)
                         }
         }
 
+        if (symbol_conf.cumulate_callchain) {
+                /* Silently ignore if callchain is missing */
+                if (!(sample_type & PERF_SAMPLE_CALLCHAIN)) {
+                        symbol_conf.cumulate_callchain = false;
+                        perf_hpp__cancel_cumulate();
+                }
+        }
+
         if (sort__mode == SORT_MODE__BRANCH) {
                 if (!is_pipe &&
                     !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
@@ -337,6 +270,11 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
         char buf[512];
         size_t size = sizeof(buf);
 
+        if (symbol_conf.filter_relative) {
+                nr_samples = hists->stats.nr_non_filtered_samples;
+                nr_events = hists->stats.total_non_filtered_period;
+        }
+
         if (perf_evsel__is_group_event(evsel)) {
                 struct perf_evsel *pos;
 
@@ -344,8 +282,13 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
                 evname = buf;
 
                 for_each_group_member(pos, evsel) {
-                        nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
-                        nr_events += pos->hists.stats.total_period;
+                        if (symbol_conf.filter_relative) {
+                                nr_samples += pos->hists.stats.nr_non_filtered_samples;
+                                nr_events += pos->hists.stats.total_non_filtered_period;
+                        } else {
+                                nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
+                                nr_events += pos->hists.stats.total_period;
+                        }
                 }
         }
 
@@ -470,24 +413,12 @@ static int report__browse_hists(struct report *rep)
         return ret;
 }
 
-static u64 report__collapse_hists(struct report *rep)
+static void report__collapse_hists(struct report *rep)
 {
         struct ui_progress prog;
         struct perf_evsel *pos;
-        u64 nr_samples = 0;
-        /*
-         * Count number of histogram entries to use when showing progress,
-         * reusing nr_samples variable.
-         */
-        evlist__for_each(rep->session->evlist, pos)
-                nr_samples += pos->hists.nr_entries;
 
-        ui_progress__init(&prog, nr_samples, "Merging related events...");
-        /*
-         * Count total number of samples, will be used to check if this
-         * session had any.
-         */
-        nr_samples = 0;
+        ui_progress__init(&prog, rep->nr_entries, "Merging related events...");
 
         evlist__for_each(rep->session->evlist, pos) {
                 struct hists *hists = &pos->hists;
@@ -496,7 +427,6 @@ static u64 report__collapse_hists(struct report *rep)
                         hists->symbol_filter_str = rep->symbol_filter_str;
 
                 hists__collapse_resort(hists, &prog);
-                nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
 
                 /* Non-group events are considered as leader */
                 if (symbol_conf.event_group &&
@@ -509,14 +439,11 @@ static u64 report__collapse_hists(struct report *rep)
         }
 
         ui_progress__finish();
-
-        return nr_samples;
 }
 
 static int __cmd_report(struct report *rep)
 {
         int ret;
-        u64 nr_samples;
         struct perf_session *session = rep->session;
         struct perf_evsel *pos;
         struct perf_data_file *file = session->file;
@@ -556,12 +483,12 @@ static int __cmd_report(struct report *rep)
                 }
         }
 
-        nr_samples = report__collapse_hists(rep);
+        report__collapse_hists(rep);
 
         if (session_done())
                 return 0;
 
-        if (nr_samples == 0) {
+        if (rep->nr_entries == 0) {
                 ui__error("The %s file has no samples!\n", file->path);
                 return 0;
         }
@@ -573,11 +500,9 @@ static int __cmd_report(struct report *rep)
 }
 
 static int
-parse_callchain_opt(const struct option *opt, const char *arg, int unset)
+report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 {
         struct report *rep = (struct report *)opt->value;
-        char *tok, *tok2;
-        char *endptr;
 
         /*
          * --no-call-graph
@@ -587,80 +512,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset)
                 return 0;
         }
 
-        symbol_conf.use_callchain = true;
-
-        if (!arg)
-                return 0;
-
-        tok = strtok((char *)arg, ",");
-        if (!tok)
-                return -1;
-
-        /* get the output mode */
-        if (!strncmp(tok, "graph", strlen(arg)))
-                callchain_param.mode = CHAIN_GRAPH_ABS;
-
-        else if (!strncmp(tok, "flat", strlen(arg)))
-                callchain_param.mode = CHAIN_FLAT;
-
-        else if (!strncmp(tok, "fractal", strlen(arg)))
-                callchain_param.mode = CHAIN_GRAPH_REL;
-
-        else if (!strncmp(tok, "none", strlen(arg))) {
-                callchain_param.mode = CHAIN_NONE;
-                symbol_conf.use_callchain = false;
-
-                return 0;
-        }
-
-        else
-                return -1;
-
-        /* get the min percentage */
-        tok = strtok(NULL, ",");
-        if (!tok)
-                goto setup;
-
-        callchain_param.min_percent = strtod(tok, &endptr);
-        if (tok == endptr)
-                return -1;
-
-        /* get the print limit */
-        tok2 = strtok(NULL, ",");
-        if (!tok2)
-                goto setup;
-
-        if (tok2[0] != 'c') {
-                callchain_param.print_limit = strtoul(tok2, &endptr, 0);
-                tok2 = strtok(NULL, ",");
-                if (!tok2)
-                        goto setup;
-        }
-
-        /* get the call chain order */
-        if (!strncmp(tok2, "caller", strlen("caller")))
-                callchain_param.order = ORDER_CALLER;
-        else if (!strncmp(tok2, "callee", strlen("callee")))
-                callchain_param.order = ORDER_CALLEE;
-        else
-                return -1;
-
-        /* Get the sort key */
-        tok2 = strtok(NULL, ",");
-        if (!tok2)
-                goto setup;
-        if (!strncmp(tok2, "function", strlen("function")))
-                callchain_param.key = CCKEY_FUNCTION;
-        else if (!strncmp(tok2, "address", strlen("address")))
-                callchain_param.key = CCKEY_ADDRESS;
-        else
-                return -1;
-setup:
-        if (callchain_register_param(&callchain_param) < 0) {
-                pr_err("Can't register callchain params\n");
-                return -1;
-        }
-        return 0;
+        return parse_callchain_report_opt(arg);
 }
 
 int
@@ -760,10 +612,10 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_BOOLEAN(0, "header-only", &report.header_only,
                     "Show only data header."),
         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
-                   "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline,"
-                   " dso_to, dso_from, symbol_to, symbol_from, mispredict,"
-                   " weight, local_weight, mem, symbol_daddr, dso_daddr, tlb, "
-                   "snoop, locked, abort, in_tx, transaction"),
+                   "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
+                   " Please refer the man page for the complete list."),
+        OPT_STRING('F', "fields", &field_order, "key[,keys...]",
+                   "output field(s): overhead, period, sample plus all of sort keys"),
         OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
                     "Show sample percentage for different cpu modes"),
         OPT_STRING('p', "parent", &parent_pattern, "regex",
@@ -772,7 +624,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
                     "Only display entries with parent-match"),
         OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
                      "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). "
-                     "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt),
+                     "Default: fractal,0.5,callee,function", &report_parse_callchain_opt, callchain_default_opt),
+        OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
+                    "Accumulate callchains of children and show total overhead as well"),
         OPT_INTEGER(0, "max-stack", &report.max_stack,
                     "Set the maximum stack depth when parsing the callchain, "
                     "anything beyond the specified depth will be ignored. "
@@ -823,6 +677,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
         OPT_CALLBACK(0, "percent-limit", &report, "percent",
                      "Don't show entries under that percent", parse_percent_limit),
+        OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
+                     "how to display percentage of filtered entries", parse_filter_percentage),
         OPT_END()
         };
         struct perf_data_file file = {
@@ -863,55 +719,37 @@ repeat:
         has_br_stack = perf_header__has_feat(&session->header,
                                              HEADER_BRANCH_STACK);
 
-        if (branch_mode == -1 && has_br_stack)
+        if (branch_mode == -1 && has_br_stack) {
                 sort__mode = SORT_MODE__BRANCH;
-
-        /* sort__mode could be NORMAL if --no-branch-stack */
-        if (sort__mode == SORT_MODE__BRANCH) {
-                /*
-                 * if no sort_order is provided, then specify
-                 * branch-mode specific order
-                 */
-                if (sort_order == default_sort_order)
-                        sort_order = "comm,dso_from,symbol_from,"
-                                     "dso_to,symbol_to";
-
+                symbol_conf.cumulate_callchain = false;
         }
+
         if (report.mem_mode) {
                 if (sort__mode == SORT_MODE__BRANCH) {
                         pr_err("branch and mem mode incompatible\n");
                         goto error;
                 }
                 sort__mode = SORT_MODE__MEMORY;
-
-                /*
-                 * if no sort_order is provided, then specify
-                 * branch-mode specific order
-                 */
-                if (sort_order == default_sort_order)
-                        sort_order = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
+                symbol_conf.cumulate_callchain = false;
         }
 
         if (setup_sorting() < 0) {
-                parse_options_usage(report_usage, options, "s", 1);
+                if (sort_order)
+                        parse_options_usage(report_usage, options, "s", 1);
+                if (field_order)
+                        parse_options_usage(sort_order ? NULL : report_usage,
+                                            options, "F", 1);
                 goto error;
         }
 
-        if (parent_pattern != default_parent_pattern) {
-                if (sort_dimension__add("parent") < 0)
-                        goto error;
-        }
-
         /* Force tty output for header output. */
         if (report.header || report.header_only)
                 use_browser = 0;
 
         if (strcmp(input_name, "-") != 0)
                 setup_browser(true);
-        else {
+        else
                 use_browser = 0;
-                perf_hpp__init();
-        }
 
         if (report.header || report.header_only) {
                 perf_session__fprintf_info(session, stdout,
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 9ac0a495c954..c38d06c04775 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -66,7 +66,7 @@ struct sched_atom {
         struct task_desc        *wakee;
 };
 
-#define TASK_STATE_TO_CHAR_STR "RSDTtZX"
+#define TASK_STATE_TO_CHAR_STR "RSDTtZXxKWP"
 
 enum thread_state {
         THREAD_SLEEPING = 0,
@@ -149,7 +149,6 @@ struct perf_sched {
         unsigned long    nr_runs;
         unsigned long    nr_timestamps;
         unsigned long    nr_unordered_timestamps;
-        unsigned long    nr_state_machine_bugs;
         unsigned long    nr_context_switch_bugs;
         unsigned long    nr_events;
         unsigned long    nr_lost_chunks;
@@ -1007,17 +1006,12 @@ static int latency_wakeup_event(struct perf_sched *sched,
                                 struct perf_sample *sample,
                                 struct machine *machine)
 {
-        const u32 pid     = perf_evsel__intval(evsel, sample, "pid"),
-                  success = perf_evsel__intval(evsel, sample, "success");
+        const u32 pid     = perf_evsel__intval(evsel, sample, "pid");
         struct work_atoms *atoms;
         struct work_atom *atom;
         struct thread *wakee;
         u64 timestamp = sample->time;
 
-        /* Note for later, it may be interesting to observe the failing cases */
-        if (!success)
-                return 0;
-
         wakee = machine__findnew_thread(machine, 0, pid);
         atoms = thread_atoms_search(&sched->atom_root, wakee, &sched->cmp_pid);
         if (!atoms) {
@@ -1037,12 +1031,18 @@ static int latency_wakeup_event(struct perf_sched *sched,
         atom = list_entry(atoms->work_list.prev, struct work_atom, list);
 
         /*
+         * As we do not guarantee the wakeup event happens when
+         * task is out of run queue, also may happen when task is
+         * on run queue and wakeup only change ->state to TASK_RUNNING,
+         * then we should not set the ->wake_up_time when wake up a
+         * task which is on run queue.
+         *
          * You WILL be missing events if you've recorded only
          * one CPU, or are only looking at only one, so don't
-         * make useless noise.
+         * skip in this case.
          */
         if (sched->profile_cpu == -1 && atom->state != THREAD_SLEEPING)
-                sched->nr_state_machine_bugs++;
+                return 0;
 
         sched->nr_timestamps++;
         if (atom->sched_out_time > timestamp) {
@@ -1266,9 +1266,8 @@ static int process_sched_wakeup_event(struct perf_tool *tool,
 static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
                             struct perf_sample *sample, struct machine *machine)
 {
-        const u32 prev_pid = perf_evsel__intval(evsel, sample, "prev_pid"),
-                  next_pid = perf_evsel__intval(evsel, sample, "next_pid");
-        struct thread *sched_out __maybe_unused, *sched_in;
+        const u32 next_pid = perf_evsel__intval(evsel, sample, "next_pid");
+        struct thread *sched_in;
         int new_shortname;
         u64 timestamp0, timestamp = sample->time;
         s64 delta;
@@ -1291,7 +1290,6 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
                 return -1;
         }
 
-        sched_out = machine__findnew_thread(machine, 0, prev_pid);
         sched_in = machine__findnew_thread(machine, 0, next_pid);
 
         sched->curr_thread[this_cpu] = sched_in;
@@ -1300,17 +1298,25 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
 
         new_shortname = 0;
         if (!sched_in->shortname[0]) {
-                sched_in->shortname[0] = sched->next_shortname1;
-                sched_in->shortname[1] = sched->next_shortname2;
-
-                if (sched->next_shortname1 < 'Z') {
-                        sched->next_shortname1++;
+                if (!strcmp(thread__comm_str(sched_in), "swapper")) {
+                        /*
+                         * Don't allocate a letter-number for swapper:0
+                         * as a shortname. Instead, we use '.' for it.
+                         */
+                        sched_in->shortname[0] = '.';
+                        sched_in->shortname[1] = ' ';
                 } else {
-                        sched->next_shortname1='A';
-                        if (sched->next_shortname2 < '9') {
-                                sched->next_shortname2++;
+                        sched_in->shortname[0] = sched->next_shortname1;
+                        sched_in->shortname[1] = sched->next_shortname2;
+
+                        if (sched->next_shortname1 < 'Z') {
+                                sched->next_shortname1++;
                         } else {
-                                sched->next_shortname2='0';
+                                sched->next_shortname1 = 'A';
+                                if (sched->next_shortname2 < '9')
+                                        sched->next_shortname2++;
+                                else
+                                        sched->next_shortname2 = '0';
                         }
                 }
                 new_shortname = 1;
@@ -1322,12 +1328,9 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
                 else
                         printf("*");
 
-                if (sched->curr_thread[cpu]) {
-                        if (sched->curr_thread[cpu]->tid)
-                                printf("%2s ", sched->curr_thread[cpu]->shortname);
-                        else
-                                printf(".  ");
-                } else
+                if (sched->curr_thread[cpu])
+                        printf("%2s ", sched->curr_thread[cpu]->shortname);
+                else
                         printf("   ");
         }
 
@@ -1425,7 +1428,7 @@ static int perf_sched__process_tracepoint_sample(struct perf_tool *tool __maybe_
         int err = 0;
 
         evsel->hists.stats.total_period += sample->period;
-        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
+        hists__inc_nr_samples(&evsel->hists, true);
 
         if (evsel->handler != NULL) {
                 tracepoint_handler f = evsel->handler;
@@ -1496,14 +1499,6 @@ static void print_bad_events(struct perf_sched *sched)
                         (double)sched->nr_lost_events/(double)sched->nr_events * 100.0,
                         sched->nr_lost_events, sched->nr_events, sched->nr_lost_chunks);
         }
-        if (sched->nr_state_machine_bugs && sched->nr_timestamps) {
-                printf("  INFO: %.3f%% state machine bugs (%ld out of %ld)",
-                        (double)sched->nr_state_machine_bugs/(double)sched->nr_timestamps*100.0,
-                        sched->nr_state_machine_bugs, sched->nr_timestamps);
-                if (sched->nr_lost_events)
-                        printf(" (due to lost events?)");
-                printf("\n");
-        }
         if (sched->nr_context_switch_bugs && sched->nr_timestamps) {
                 printf("  INFO: %.3f%% context switch bugs (%ld out of %ld)",
                         (double)sched->nr_context_switch_bugs/(double)sched->nr_timestamps*100.0,
@@ -1635,6 +1630,7 @@ static int __cmd_record(int argc, const char **argv)
                 "-e", "sched:sched_stat_runtime",
                 "-e", "sched:sched_process_fork",
                 "-e", "sched:sched_wakeup",
+                "-e", "sched:sched_wakeup_new",
                 "-e", "sched:sched_migrate_task",
         };
 
@@ -1713,8 +1709,10 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
                 "perf sched replay [<options>]",
                 NULL
         };
-        const char * const sched_usage[] = {
-                "perf sched [<options>] {record|latency|map|replay|script}",
+        const char *const sched_subcommands[] = { "record", "latency", "map",
+                                                  "replay", "script", NULL };
+        const char *sched_usage[] = {
+                NULL,
                 NULL
         };
         struct trace_sched_handler lat_ops  = {
@@ -1736,8 +1734,8 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
         for (i = 0; i < ARRAY_SIZE(sched.curr_pid); i++)
                 sched.curr_pid[i] = -1;
 
-        argc = parse_options(argc, argv, sched_options, sched_usage,
-                             PARSE_OPT_STOP_AT_NON_OPTION);
+        argc = parse_options_subcommand(argc, argv, sched_options, sched_subcommands,
+                                        sched_usage, PARSE_OPT_STOP_AT_NON_OPTION);
         if (!argc)
                 usage_with_options(sched_usage, sched_options);
 
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 65aaa5bbf7ec..377971dc89a3 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -196,6 +196,12 @@ static void perf_top__record_precise_ip(struct perf_top *top,
 
         pthread_mutex_unlock(&notes->lock);
 
+        /*
+         * This function is now called with he->hists->lock held.
+         * Release it before going to sleep.
+         */
+        pthread_mutex_unlock(&he->hists->lock);
+
         if (err == -ERANGE && !he->ms.map->erange_warned)
                 ui__warn_map_erange(he->ms.map, sym, ip);
         else if (err == -ENOMEM) {
@@ -203,6 +209,8 @@ static void perf_top__record_precise_ip(struct perf_top *top,
                        sym->name);
                 sleep(1);
         }
+
+        pthread_mutex_lock(&he->hists->lock);
 }
 
 static void perf_top__show_details(struct perf_top *top)
@@ -238,24 +246,6 @@ out_unlock:
         pthread_mutex_unlock(&notes->lock);
 }
 
-static struct hist_entry *perf_evsel__add_hist_entry(struct perf_evsel *evsel,
-                                                     struct addr_location *al,
-                                                     struct perf_sample *sample)
-{
-        struct hist_entry *he;
-
-        pthread_mutex_lock(&evsel->hists.lock);
-        he = __hists__add_entry(&evsel->hists, al, NULL, NULL, NULL,
-                                sample->period, sample->weight,
-                                sample->transaction);
-        pthread_mutex_unlock(&evsel->hists.lock);
-        if (he == NULL)
-                return NULL;
-
-        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
-        return he;
-}
-
 static void perf_top__print_sym_table(struct perf_top *top)
 {
         char bf[160];
@@ -659,6 +649,26 @@ static int symbol_filter(struct map *map __maybe_unused, struct symbol *sym)
         return 0;
 }
 
+static int hist_iter__top_callback(struct hist_entry_iter *iter,
+                                   struct addr_location *al, bool single,
+                                   void *arg)
+{
+        struct perf_top *top = arg;
+        struct hist_entry *he = iter->he;
+        struct perf_evsel *evsel = iter->evsel;
+
+        if (sort__has_sym && single) {
+                u64 ip = al->addr;
+
+                if (al->map)
+                        ip = al->map->unmap_ip(al->map, ip);
+
+                perf_top__record_precise_ip(top, he, evsel->idx, ip);
+        }
+
+        return 0;
+}
+
 static void perf_event__process_sample(struct perf_tool *tool,
                                        const union perf_event *event,
                                        struct perf_evsel *evsel,
@@ -666,8 +676,6 @@ static void perf_event__process_sample(struct perf_tool *tool,
                                        struct machine *machine)
 {
         struct perf_top *top = container_of(tool, struct perf_top, tool);
-        struct symbol *parent = NULL;
-        u64 ip = sample->ip;
         struct addr_location al;
         int err;
 
@@ -694,8 +702,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
         if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
                 top->exact_samples++;
 
-        if (perf_event__preprocess_sample(event, machine, &al, sample) < 0 ||
-            al.filtered)
+        if (perf_event__preprocess_sample(event, machine, &al, sample) < 0)
                 return;
 
         if (!top->kptr_restrict_warned &&
@@ -743,25 +750,23 @@ static void perf_event__process_sample(struct perf_tool *tool,
         }
 
         if (al.sym == NULL || !al.sym->ignore) {
-                struct hist_entry *he;
+                struct hist_entry_iter iter = {
+                        .add_entry_cb = hist_iter__top_callback,
+                };
 
-                err = sample__resolve_callchain(sample, &parent, evsel, &al,
-                                                top->max_stack);
-                if (err)
-                        return;
+                if (symbol_conf.cumulate_callchain)
+                        iter.ops = &hist_iter_cumulative;
+                else
+                        iter.ops = &hist_iter_normal;
 
-                he = perf_evsel__add_hist_entry(evsel, &al, sample);
-                if (he == NULL) {
-                        pr_err("Problem incrementing symbol period, skipping event\n");
-                        return;
-                }
+                pthread_mutex_lock(&evsel->hists.lock);
 
-                err = hist_entry__append_callchain(he, sample);
-                if (err)
-                        return;
+                err = hist_entry_iter__add(&iter, &al, evsel, sample,
+                                           top->max_stack, top);
+                if (err < 0)
+                        pr_err("Problem incrementing symbol period, skipping event\n");
 
-                if (sort__has_sym)
-                        perf_top__record_precise_ip(top, he, evsel->idx, ip);
+                pthread_mutex_unlock(&evsel->hists.lock);
         }
 
         return;
@@ -999,6 +1004,10 @@ static int perf_top_config(const char *var, const char *value, void *cb)
 
         if (!strcmp(var, "top.call-graph"))
                 return record_parse_callchain(value, &top->record_opts);
+        if (!strcmp(var, "top.children")) {
+                symbol_conf.cumulate_callchain = perf_config_bool(var, value);
+                return 0;
+        }
 
         return perf_default_config(var, value, cb);
 }
@@ -1081,8 +1090,10 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_INCR('v', "verbose", &verbose,
                     "be more verbose (show counter open errors, etc)"),
         OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
-                   "sort by key(s): pid, comm, dso, symbol, parent, weight, local_weight,"
-                   " abort, in_tx, transaction"),
+                   "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline, ..."
+                   " Please refer the man page for the complete list."),
+        OPT_STRING(0, "fields", &field_order, "key[,keys...]",
+                   "output field(s): overhead, period, sample plus all of sort keys"),
         OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
                     "Show a column with the number of samples"),
         OPT_CALLBACK_NOOPT('g', NULL, &top.record_opts,
@@ -1091,6 +1102,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_CALLBACK(0, "call-graph", &top.record_opts,
                      "mode[,dump_size]", record_callchain_help,
                      &parse_callchain_opt),
+        OPT_BOOLEAN(0, "children", &symbol_conf.cumulate_callchain,
+                    "Accumulate callchains of children and show total overhead as well"),
         OPT_INTEGER(0, "max-stack", &top.max_stack,
                     "Set the maximum stack depth when parsing the callchain. "
                     "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
@@ -1116,6 +1129,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
         OPT_CALLBACK(0, "percent-limit", &top, "percent",
                      "Don't show entries under that percent", parse_percent_limit),
+        OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
+                     "How to display percentage of filtered entries", parse_filter_percentage),
         OPT_END()
         };
         const char * const top_usage[] = {
@@ -1133,17 +1148,19 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
         if (argc)
                 usage_with_options(top_usage, options);
 
-        if (sort_order == default_sort_order)
-                sort_order = "dso,symbol";
+        sort__mode = SORT_MODE__TOP;
+        /* display thread wants entries to be collapsed in a different tree */
+        sort__need_collapse = 1;
 
         if (setup_sorting() < 0) {
-                parse_options_usage(top_usage, options, "s", 1);
+                if (sort_order)
+                        parse_options_usage(top_usage, options, "s", 1);
+                if (field_order)
+                        parse_options_usage(sort_order ? NULL : top_usage,
+                                            options, "fields", 0);
                 goto out_delete_evlist;
         }
 
-        /* display thread wants entries to be collapsed in a different tree */
-        sort__need_collapse = 1;
-
         if (top.use_stdio)
                 use_browser = 0;
         else if (top.use_tui)
@@ -1192,6 +1209,11 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
 
         top.sym_evsel = perf_evlist__first(top.evlist);
 
+        if (!symbol_conf.use_callchain) {
+                symbol_conf.cumulate_callchain = false;
+                perf_hpp__cancel_cumulate();
+        }
+
         symbol_conf.priv_size = sizeof(struct annotation);
 
         symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 802cf544202b..4f100b54ba8b 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -29,16 +29,22 @@ ifeq ($(ARCH),x86)
   endif
   NO_PERF_REGS := 0
 endif
+
 ifeq ($(ARCH),arm)
   NO_PERF_REGS := 0
   LIBUNWIND_LIBS = -lunwind -lunwind-arm
 endif
 
-# So far there's only x86 libdw unwind support merged in perf.
+ifeq ($(ARCH),arm64)
+  NO_PERF_REGS := 0
+  LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
+endif
+
+# So far there's only x86 and arm libdw unwind support merged in perf.
 # Disable it on all other architectures in case libdw unwind
 # support is detected in system. Add supported architectures
 # to the check.
-ifneq ($(ARCH),x86)
+ifneq ($(ARCH),$(filter $(ARCH),x86 arm))
   NO_LIBDW_DWARF_UNWIND := 1
 endif
 
@@ -168,7 +174,6 @@ CORE_FEATURE_TESTS =			\
         libpython-version               \
         libslang                        \
         libunwind                       \
-        on-exit                         \
         stackprotector-all              \
         timerfd                         \
         libdw-dwarf-unwind
@@ -194,7 +199,6 @@ VF_FEATURE_TESTS =			\
         libelf-getphdrnum               \
         libelf-mmap                     \
         libpython-version               \
-        on-exit                         \
         stackprotector-all              \
         timerfd                         \
         libunwind-debug-frame           \
@@ -370,7 +374,7 @@ else
 endif
 
 ifndef NO_LIBUNWIND
-  ifeq ($(ARCH),arm)
+  ifeq ($(ARCH),$(filter $(ARCH),arm arm64))
     $(call feature_check,libunwind-debug-frame)
     ifneq ($(feature-libunwind-debug-frame), 1)
       msg := $(warning No debug_frame support found in libunwind);
@@ -443,6 +447,7 @@ else
   ifneq ($(feature-libperl), 1)
     CFLAGS += -DNO_LIBPERL
     NO_LIBPERL := 1
+    msg := $(warning Missing perl devel files. Disabling perl scripting support, consider installing perl-ExtUtils-Embed);
   else
     LDFLAGS += $(PERL_EMBED_LDFLAGS)
     EXTLIBS += $(PERL_EMBED_LIBADD)
@@ -565,12 +570,6 @@ ifneq ($(filter -lbfd,$(EXTLIBS)),)
   CFLAGS += -DHAVE_LIBBFD_SUPPORT
 endif
 
-ifndef NO_ON_EXIT
-  ifeq ($(feature-on-exit), 1)
-    CFLAGS += -DHAVE_ON_EXIT_SUPPORT
-  endif
-endif
-
 ifndef NO_BACKTRACE
   ifeq ($(feature-backtrace), 1)
     CFLAGS += -DHAVE_BACKTRACE_SUPPORT
@@ -601,7 +600,7 @@ endif
 
 # Make the path relative to DESTDIR, not to prefix
 ifndef DESTDIR
-prefix = $(HOME)
+prefix ?= $(HOME)
 endif
 bindir_relative = bin
 bindir = $(prefix)/$(bindir_relative)
diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 2da103c53f89..64c84e5f0514 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -24,7 +24,6 @@ FILES=					\
         test-libslang.bin               \
         test-libunwind.bin              \
         test-libunwind-debug-frame.bin  \
-        test-on-exit.bin                \
         test-stackprotector-all.bin     \
         test-timerfd.bin                \
         test-libdw-dwarf-unwind.bin
@@ -133,9 +132,6 @@ test-liberty-z.bin:
 test-cplus-demangle.bin:
         $(BUILD) -liberty
 
-test-on-exit.bin:
-        $(BUILD)
-
 test-backtrace.bin:
         $(BUILD)
 
diff --git a/tools/perf/config/feature-checks/test-all.c b/tools/perf/config/feature-checks/test-all.c
index fc37eb3ca17b..fe5c1e5c952f 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -69,10 +69,6 @@
 # include "test-libbfd.c"
 #undef main
 
-#define main main_test_on_exit
-# include "test-on-exit.c"
-#undef main
-
 #define main main_test_backtrace
 # include "test-backtrace.c"
 #undef main
@@ -110,7 +106,6 @@ int main(int argc, char *argv[])
         main_test_gtk2(argc, argv);
         main_test_gtk2_infobar(argc, argv);
         main_test_libbfd();
-        main_test_on_exit();
         main_test_backtrace();
         main_test_libnuma();
         main_test_timerfd();
diff --git a/tools/perf/config/feature-checks/test-on-exit.c b/tools/perf/config/feature-checks/test-on-exit.c
deleted file mode 100644
index 8e88b16e6ded..000000000000
--- a/tools/perf/config/feature-checks/test-on-exit.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-static void exit_fn(int status, void *__data)
-{
-        printf("exit status: %d, data: %d\n", status, *(int *)__data);
-}
-
-static int data = 123;
-
-int main(void)
-{
-        on_exit(exit_fn, &data);
-
-        return 321;
-}
diff --git a/tools/perf/perf-completion.sh b/tools/perf/perf-completion.sh
index ae3a57694b6b..33569847fdcc 100644
--- a/tools/perf/perf-completion.sh
+++ b/tools/perf/perf-completion.sh
@@ -121,8 +121,8 @@ __perf_main ()
         elif [[ $prev == "-e" && "${words[1]}" == @(record|stat|top) ]]; then
                 evts=$($cmd list --raw-dump)
                 __perfcomp_colon "$evts" "$cur"
-        # List subcommands for 'perf kvm'
-        elif [[ $prev == "kvm" ]]; then
+        # List subcommands for perf commands
+        elif [[ $prev == @(kvm|kmem|mem|lock|sched) ]]; then
                 subcmds=$($cmd $prev --list-cmds)
                 __perfcomp_colon "$subcmds" "$cur"
         # List long option names
diff --git a/tools/perf/perf-sys.h b/tools/perf/perf-sys.h
new file mode 100644
index 000000000000..5268a1481d23
--- /dev/null
+++ b/tools/perf/perf-sys.h
@@ -0,0 +1,190 @@
+#ifndef _PERF_SYS_H
+#define _PERF_SYS_H
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+#include <linux/types.h>
+#include <linux/perf_event.h>
+#include <asm/unistd.h>
+
+#if defined(__i386__)
+#define mb()            asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
+#define wmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
+#define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
+#define cpu_relax()     asm volatile("rep; nop" ::: "memory");
+#define CPUINFO_PROC    "model name"
+#ifndef __NR_perf_event_open
+# define __NR_perf_event_open 336
+#endif
+#ifndef __NR_futex
+# define __NR_futex 240
+#endif
+#ifndef __NR_gettid
+# define __NR_gettid 224
+#endif
+#endif
+
+#if defined(__x86_64__)
+#define mb()            asm volatile("mfence" ::: "memory")
+#define wmb()           asm volatile("sfence" ::: "memory")
+#define rmb()           asm volatile("lfence" ::: "memory")
+#define cpu_relax()     asm volatile("rep; nop" ::: "memory");
+#define CPUINFO_PROC    "model name"
+#ifndef __NR_perf_event_open
+# define __NR_perf_event_open 298
+#endif
+#ifndef __NR_futex
+# define __NR_futex 202
+#endif
+#ifndef __NR_gettid
+# define __NR_gettid 186
+#endif
+#endif
+
+#ifdef __powerpc__
+#include "../../arch/powerpc/include/uapi/asm/unistd.h"
+#define mb()            asm volatile ("sync" ::: "memory")
+#define wmb()           asm volatile ("sync" ::: "memory")
+#define rmb()           asm volatile ("sync" ::: "memory")
+#define CPUINFO_PROC    "cpu"
+#endif
+
+#ifdef __s390__
+#define mb()            asm volatile("bcr 15,0" ::: "memory")
+#define wmb()           asm volatile("bcr 15,0" ::: "memory")
+#define rmb()           asm volatile("bcr 15,0" ::: "memory")
+#endif
+
+#ifdef __sh__
+#if defined(__SH4A__) || defined(__SH5__)
+# define mb()           asm volatile("synco" ::: "memory")
+# define wmb()          asm volatile("synco" ::: "memory")
+# define rmb()          asm volatile("synco" ::: "memory")
+#else
+# define mb()           asm volatile("" ::: "memory")
+# define wmb()          asm volatile("" ::: "memory")
+# define rmb()          asm volatile("" ::: "memory")
+#endif
+#define CPUINFO_PROC    "cpu type"
+#endif
+
+#ifdef __hppa__
+#define mb()            asm volatile("" ::: "memory")
+#define wmb()           asm volatile("" ::: "memory")
+#define rmb()           asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "cpu"
+#endif
+
+#ifdef __sparc__
+#ifdef __LP64__
+#define mb()            asm volatile("ba,pt %%xcc, 1f\n"        \
+                                     "membar #StoreLoad\n"      \
+                                     "1:\n":::"memory")
+#else
+#define mb()            asm volatile("":::"memory")
+#endif
+#define wmb()           asm volatile("":::"memory")
+#define rmb()           asm volatile("":::"memory")
+#define CPUINFO_PROC    "cpu"
+#endif
+
+#ifdef __alpha__
+#define mb()            asm volatile("mb" ::: "memory")
+#define wmb()           asm volatile("wmb" ::: "memory")
+#define rmb()           asm volatile("mb" ::: "memory")
+#define CPUINFO_PROC    "cpu model"
+#endif
+
+#ifdef __ia64__
+#define mb()            asm volatile ("mf" ::: "memory")
+#define wmb()           asm volatile ("mf" ::: "memory")
+#define rmb()           asm volatile ("mf" ::: "memory")
+#define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
+#define CPUINFO_PROC    "model name"
+#endif
+
+#ifdef __arm__
+/*
+ * Use the __kuser_memory_barrier helper in the CPU helper page. See
+ * arch/arm/kernel/entry-armv.S in the kernel source for details.
+ */
+#define mb()            ((void(*)(void))0xffff0fa0)()
+#define wmb()           ((void(*)(void))0xffff0fa0)()
+#define rmb()           ((void(*)(void))0xffff0fa0)()
+#define CPUINFO_PROC    "Processor"
+#endif
+
+#ifdef __aarch64__
+#define mb()            asm volatile("dmb ish" ::: "memory")
+#define wmb()           asm volatile("dmb ishst" ::: "memory")
+#define rmb()           asm volatile("dmb ishld" ::: "memory")
+#define cpu_relax()     asm volatile("yield" ::: "memory")
+#endif
+
+#ifdef __mips__
+#define mb()            asm volatile(                                   \
+                                ".set   mips2\n\t"                      \
+                                "sync\n\t"                              \
+                                ".set   mips0"                          \
+                                : /* no output */                       \
+                                : /* no input */                        \
+                                : "memory")
+#define wmb()   mb()
+#define rmb()   mb()
+#define CPUINFO_PROC    "cpu model"
+#endif
+
+#ifdef __arc__
+#define mb()            asm volatile("" ::: "memory")
+#define wmb()           asm volatile("" ::: "memory")
+#define rmb()           asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "Processor"
+#endif
+
+#ifdef __metag__
+#define mb()            asm volatile("" ::: "memory")
+#define wmb()           asm volatile("" ::: "memory")
+#define rmb()           asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "CPU"
+#endif
+
+#ifdef __xtensa__
+#define mb()            asm volatile("memw" ::: "memory")
+#define wmb()           asm volatile("memw" ::: "memory")
+#define rmb()           asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "core ID"
+#endif
+
+#ifdef __tile__
+#define mb()            asm volatile ("mf" ::: "memory")
+#define wmb()           asm volatile ("mf" ::: "memory")
+#define rmb()           asm volatile ("mf" ::: "memory")
+#define cpu_relax()     asm volatile ("mfspr zero, PASS" ::: "memory")
+#define CPUINFO_PROC    "model name"
+#endif
+
+#define barrier() asm volatile ("" ::: "memory")
+
+#ifndef cpu_relax
+#define cpu_relax() barrier()
+#endif
+
+static inline int
+sys_perf_event_open(struct perf_event_attr *attr,
+                      pid_t pid, int cpu, int group_fd,
+                      unsigned long flags)
+{
+        int fd;
+
+        fd = syscall(__NR_perf_event_open, attr, pid, cpu,
+                     group_fd, flags);
+
+#ifdef HAVE_ATTR_TEST
+        if (unlikely(test_attr__enabled))
+                test_attr__open(attr, pid, cpu, fd, group_fd, flags);
+#endif
+        return fd;
+}
+
+#endif /* _PERF_SYS_H */
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 431798a4110d..78f7b920e548 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -481,14 +481,18 @@ int main(int argc, const char **argv)
                 fprintf(stderr, "cannot handle %s internally", cmd);
                 goto out;
         }
-#ifdef HAVE_LIBAUDIT_SUPPORT
         if (!prefixcmp(cmd, "trace")) {
+#ifdef HAVE_LIBAUDIT_SUPPORT
                 set_buildid_dir();
                 setup_path();
                 argv[0] = "trace";
                 return cmd_trace(argc, argv, NULL);
-        }
+#else
+                fprintf(stderr,
+                        "trace command not available: missing audit-libs devel package at build time.\n");
+                goto out;
 #endif
+        }
         /* Look for flags.. */
         argv++;
         argc--;
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 5c11ecad02a9..510c65f72858 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -1,182 +1,18 @@
 #ifndef _PERF_PERF_H
 #define _PERF_PERF_H
 
-#include <asm/unistd.h>
-
-#if defined(__i386__)
-#define mb()            asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
-#define wmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
-#define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
-#define cpu_relax()     asm volatile("rep; nop" ::: "memory");
-#define CPUINFO_PROC    "model name"
-#ifndef __NR_perf_event_open
-# define __NR_perf_event_open 336
-#endif
-#ifndef __NR_futex
-# define __NR_futex 240
-#endif
-#endif
-
-#if defined(__x86_64__)
-#define mb()            asm volatile("mfence" ::: "memory")
-#define wmb()           asm volatile("sfence" ::: "memory")
-#define rmb()           asm volatile("lfence" ::: "memory")
-#define cpu_relax()     asm volatile("rep; nop" ::: "memory");
-#define CPUINFO_PROC    "model name"
-#ifndef __NR_perf_event_open
-# define __NR_perf_event_open 298
-#endif
-#ifndef __NR_futex
-# define __NR_futex 202
-#endif
-#endif
-
-#ifdef __powerpc__
-#include "../../arch/powerpc/include/uapi/asm/unistd.h"
-#define mb()            asm volatile ("sync" ::: "memory")
-#define wmb()           asm volatile ("sync" ::: "memory")
-#define rmb()           asm volatile ("sync" ::: "memory")
-#define CPUINFO_PROC    "cpu"
-#endif
-
-#ifdef __s390__
-#define mb()            asm volatile("bcr 15,0" ::: "memory")
-#define wmb()           asm volatile("bcr 15,0" ::: "memory")
-#define rmb()           asm volatile("bcr 15,0" ::: "memory")
-#endif
-
-#ifdef __sh__
-#if defined(__SH4A__) || defined(__SH5__)
-# define mb()           asm volatile("synco" ::: "memory")
-# define wmb()          asm volatile("synco" ::: "memory")
-# define rmb()          asm volatile("synco" ::: "memory")
-#else
-# define mb()           asm volatile("" ::: "memory")
-# define wmb()          asm volatile("" ::: "memory")
-# define rmb()          asm volatile("" ::: "memory")
-#endif
-#define CPUINFO_PROC    "cpu type"
-#endif
-
-#ifdef __hppa__
-#define mb()            asm volatile("" ::: "memory")
-#define wmb()           asm volatile("" ::: "memory")
-#define rmb()           asm volatile("" ::: "memory")
-#define CPUINFO_PROC    "cpu"
-#endif
-
-#ifdef __sparc__
-#ifdef __LP64__
-#define mb()            asm volatile("ba,pt %%xcc, 1f\n"        \
-                                     "membar #StoreLoad\n"      \
-                                     "1:\n":::"memory")
-#else
-#define mb()            asm volatile("":::"memory")
-#endif
-#define wmb()           asm volatile("":::"memory")
-#define rmb()           asm volatile("":::"memory")
-#define CPUINFO_PROC    "cpu"
-#endif
-
-#ifdef __alpha__
-#define mb()            asm volatile("mb" ::: "memory")
-#define wmb()           asm volatile("wmb" ::: "memory")
-#define rmb()           asm volatile("mb" ::: "memory")
-#define CPUINFO_PROC    "cpu model"
-#endif
-
-#ifdef __ia64__
-#define mb()            asm volatile ("mf" ::: "memory")
-#define wmb()           asm volatile ("mf" ::: "memory")
-#define rmb()           asm volatile ("mf" ::: "memory")
-#define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
-#define CPUINFO_PROC    "model name"
-#endif
-
-#ifdef __arm__
-/*
- * Use the __kuser_memory_barrier helper in the CPU helper page. See
- * arch/arm/kernel/entry-armv.S in the kernel source for details.
- */
-#define mb()            ((void(*)(void))0xffff0fa0)()
-#define wmb()           ((void(*)(void))0xffff0fa0)()
-#define rmb()           ((void(*)(void))0xffff0fa0)()
-#define CPUINFO_PROC    "Processor"
-#endif
-
-#ifdef __aarch64__
-#define mb()            asm volatile("dmb ish" ::: "memory")
-#define wmb()           asm volatile("dmb ishst" ::: "memory")
-#define rmb()           asm volatile("dmb ishld" ::: "memory")
-#define cpu_relax()     asm volatile("yield" ::: "memory")
-#endif
-
-#ifdef __mips__
-#define mb()            asm volatile(                                   \
-                                ".set   mips2\n\t"                      \
-                                "sync\n\t"                              \
-                                ".set   mips0"                          \
-                                : /* no output */                       \
-                                : /* no input */                        \
-                                : "memory")
-#define wmb()   mb()
-#define rmb()   mb()
-#define CPUINFO_PROC    "cpu model"
-#endif
-
-#ifdef __arc__
-#define mb()            asm volatile("" ::: "memory")
-#define wmb()           asm volatile("" ::: "memory")
-#define rmb()           asm volatile("" ::: "memory")
-#define CPUINFO_PROC    "Processor"
-#endif
-
-#ifdef __metag__
-#define mb()            asm volatile("" ::: "memory")
-#define wmb()           asm volatile("" ::: "memory")
-#define rmb()           asm volatile("" ::: "memory")
-#define CPUINFO_PROC    "CPU"
-#endif
-
-#ifdef __xtensa__
-#define mb()            asm volatile("memw" ::: "memory")
-#define wmb()           asm volatile("memw" ::: "memory")
-#define rmb()           asm volatile("" ::: "memory")
-#define CPUINFO_PROC    "core ID"
-#endif
-
-#ifdef __tile__
-#define mb()            asm volatile ("mf" ::: "memory")
-#define wmb()           asm volatile ("mf" ::: "memory")
-#define rmb()           asm volatile ("mf" ::: "memory")
-#define cpu_relax()     asm volatile ("mfspr zero, PASS" ::: "memory")
-#define CPUINFO_PROC    "model name"
-#endif
-
-#define barrier() asm volatile ("" ::: "memory")
-
-#ifndef cpu_relax
-#define cpu_relax() barrier()
-#endif
-
-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
-
-
 #include <time.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/syscall.h>
-
-#include <linux/perf_event.h>
-#include "util/types.h"
 #include <stdbool.h>
+#include <linux/types.h>
+#include <linux/perf_event.h>
 
-/*
- * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
- * counters in the current task.
- */
-#define PR_TASK_PERF_EVENTS_DISABLE   31
-#define PR_TASK_PERF_EVENTS_ENABLE    32
+extern bool test_attr__enabled;
+void test_attr__init(void);
+void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
+                     int fd, int group_fd, unsigned long flags);
+
+#define HAVE_ATTR_TEST
+#include "perf-sys.h"
 
 #ifndef NSEC_PER_SEC
 # define NSEC_PER_SEC                   1000000000ULL
@@ -193,67 +29,8 @@ static inline unsigned long long rdclock(void)
         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 }
 
-/*
- * Pick up some kernel type conventions:
- */
-#define __user
-#define asmlinkage
-
-#define unlikely(x)     __builtin_expect(!!(x), 0)
-#define min(x, y) ({                            \
-        typeof(x) _min1 = (x);                  \
-        typeof(y) _min2 = (y);                  \
-        (void) (&_min1 == &_min2);              \
-        _min1 < _min2 ? _min1 : _min2; })
-
-extern bool test_attr__enabled;
-void test_attr__init(void);
-void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
-                     int fd, int group_fd, unsigned long flags);
-
-static inline int
-sys_perf_event_open(struct perf_event_attr *attr,
-                      pid_t pid, int cpu, int group_fd,
-                      unsigned long flags)
-{
-        int fd;
-
-        fd = syscall(__NR_perf_event_open, attr, pid, cpu,
-                     group_fd, flags);
-
-        if (unlikely(test_attr__enabled))
-                test_attr__open(attr, pid, cpu, fd, group_fd, flags);
-
-        return fd;
-}
-
-#define MAX_COUNTERS                    256
 #define MAX_NR_CPUS                     256
 
-struct ip_callchain {
-        u64 nr;
-        u64 ips[0];
-};
-
-struct branch_flags {
-        u64 mispred:1;
-        u64 predicted:1;
-        u64 in_tx:1;
-        u64 abort:1;
-        u64 reserved:60;
-};
-
-struct branch_entry {
-        u64                             from;
-        u64                             to;
-        struct branch_flags flags;
-};
-
-struct branch_stack {
-        u64                             nr;
-        struct branch_entry     entries[0];
-};
-
 extern const char *input_name;
 extern bool perf_host, perf_guest;
 extern const char perf_version_string[];
@@ -262,13 +39,6 @@ void pthread__unblock_sigwinch(void);
 
 #include "util/target.h"
 
-enum perf_call_graph_mode {
-        CALLCHAIN_NONE,
-        CALLCHAIN_FP,
-        CALLCHAIN_DWARF,
-        CALLCHAIN_MAX
-};
-
 struct record_opts {
         struct target target;
         int          call_graph;
diff --git a/tools/perf/tests/attr.c b/tools/perf/tests/attr.c
index 00218f503b2e..2dfc9ad0e6f2 100644
--- a/tools/perf/tests/attr.c
+++ b/tools/perf/tests/attr.c
@@ -1,4 +1,3 @@
-
 /*
  * The struct perf_event_attr test support.
  *
@@ -19,14 +18,8 @@
  * permissions. All the event text files are stored there.
  */
 
-/*
- * Powerpc needs __SANE_USERSPACE_TYPES__ before <linux/types.h> to select
- * 'int-ll64.h' and avoid compile warnings when printing __u64 with %llu.
- */
-#define __SANE_USERSPACE_TYPES__
 #include <stdlib.h>
 #include <stdio.h>
-#include <inttypes.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include "../perf.h"
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index b11bf8a08430..802e3cd50f6f 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -115,7 +115,7 @@ static struct test {
                 .desc = "Test parsing with no sample_id_all bit set",
                 .func = test__parse_no_sample_id_all,
         },
-#if defined(__x86_64__) || defined(__i386__)
+#if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT
         {
                 .desc = "Test dwarf unwind",
@@ -124,6 +124,26 @@ static struct test {
 #endif
 #endif
         {
+                .desc = "Test filtering hist entries",
+                .func = test__hists_filter,
+        },
+        {
+                .desc = "Test mmap thread lookup",
+                .func = test__mmap_thread_lookup,
+        },
+        {
+                .desc = "Test thread mg sharing",
+                .func = test__thread_mg_share,
+        },
+        {
+                .desc = "Test output sorting of hist entries",
+                .func = test__hists_output,
+        },
+        {
+                .desc = "Test cumulation of child hist entries",
+                .func = test__hists_cumulate,
+        },
+        {
                 .func = NULL,
         },
 };
diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c
index bfb186900ac0..67f2d6323558 100644
--- a/tools/perf/tests/code-reading.c
+++ b/tools/perf/tests/code-reading.c
@@ -1,8 +1,7 @@
-#include <sys/types.h>
+#include <linux/types.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdio.h>
-#include <inttypes.h>
 #include <ctype.h>
 #include <string.h>
 
@@ -257,7 +256,7 @@ static int process_sample_event(struct machine *machine,
                 return -1;
         }
 
-        thread = machine__findnew_thread(machine, sample.pid, sample.pid);
+        thread = machine__findnew_thread(machine, sample.pid, sample.tid);
         if (!thread) {
                 pr_debug("machine__findnew_thread failed\n");
                 return -1;
diff --git a/tools/perf/tests/dso-data.c b/tools/perf/tests/dso-data.c
index 9cc81a3eb9b4..3e6cb171e3d3 100644
--- a/tools/perf/tests/dso-data.c
+++ b/tools/perf/tests/dso-data.c
@@ -1,7 +1,7 @@
 #include "util.h"
 
 #include <stdlib.h>
-#include <sys/types.h>
+#include <linux/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <string.h>
diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c
index c059ee81c038..108f0cd49f4e 100644
--- a/tools/perf/tests/dwarf-unwind.c
+++ b/tools/perf/tests/dwarf-unwind.c
@@ -1,5 +1,5 @@
 #include <linux/compiler.h>
-#include <sys/types.h>
+#include <linux/types.h>
 #include <unistd.h>
 #include "tests.h"
 #include "debug.h"
diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c
index 4774f7fbb758..35d7fdb2328d 100644
--- a/tools/perf/tests/evsel-tp-sched.c
+++ b/tools/perf/tests/evsel-tp-sched.c
@@ -74,9 +74,6 @@ int test__perf_evsel__tp_sched_test(void)
         if (perf_evsel__test_field(evsel, "prio", 4, true))
                 ret = -1;
 
-        if (perf_evsel__test_field(evsel, "success", 4, true))
-                ret = -1;
-
         if (perf_evsel__test_field(evsel, "target_cpu", 4, true))
                 ret = -1;
 
diff --git a/tools/perf/tests/hists_common.c b/tools/perf/tests/hists_common.c
new file mode 100644
index 000000000000..a62c09134516
--- /dev/null
+++ b/tools/perf/tests/hists_common.c
@@ -0,0 +1,209 @@
+#include "perf.h"
+#include "util/debug.h"
+#include "util/symbol.h"
+#include "util/sort.h"
+#include "util/evsel.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/thread.h"
+#include "tests/hists_common.h"
+
+static struct {
+        u32 pid;
+        const char *comm;
+} fake_threads[] = {
+        { FAKE_PID_PERF1, "perf" },
+        { FAKE_PID_PERF2, "perf" },
+        { FAKE_PID_BASH,  "bash" },
+};
+
+static struct {
+        u32 pid;
+        u64 start;
+        const char *filename;
+} fake_mmap_info[] = {
+        { FAKE_PID_PERF1, FAKE_MAP_PERF,   "perf" },
+        { FAKE_PID_PERF1, FAKE_MAP_LIBC,   "libc" },
+        { FAKE_PID_PERF1, FAKE_MAP_KERNEL, "[kernel]" },
+        { FAKE_PID_PERF2, FAKE_MAP_PERF,   "perf" },
+        { FAKE_PID_PERF2, FAKE_MAP_LIBC,   "libc" },
+        { FAKE_PID_PERF2, FAKE_MAP_KERNEL, "[kernel]" },
+        { FAKE_PID_BASH,  FAKE_MAP_BASH,   "bash" },
+        { FAKE_PID_BASH,  FAKE_MAP_LIBC,   "libc" },
+        { FAKE_PID_BASH,  FAKE_MAP_KERNEL, "[kernel]" },
+};
+
+struct fake_sym {
+        u64 start;
+        u64 length;
+        const char *name;
+};
+
+static struct fake_sym perf_syms[] = {
+        { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" },
+        { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "run_command" },
+        { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "cmd_record" },
+};
+
+static struct fake_sym bash_syms[] = {
+        { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "main" },
+        { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "xmalloc" },
+        { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "xfree" },
+};
+
+static struct fake_sym libc_syms[] = {
+        { 700, 100, "malloc" },
+        { 800, 100, "free" },
+        { 900, 100, "realloc" },
+        { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "malloc" },
+        { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "free" },
+        { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "realloc" },
+};
+
+static struct fake_sym kernel_syms[] = {
+        { FAKE_SYM_OFFSET1, FAKE_SYM_LENGTH, "schedule" },
+        { FAKE_SYM_OFFSET2, FAKE_SYM_LENGTH, "page_fault" },
+        { FAKE_SYM_OFFSET3, FAKE_SYM_LENGTH, "sys_perf_event_open" },
+};
+
+static struct {
+        const char *dso_name;
+        struct fake_sym *syms;
+        size_t nr_syms;
+} fake_symbols[] = {
+        { "perf", perf_syms, ARRAY_SIZE(perf_syms) },
+        { "bash", bash_syms, ARRAY_SIZE(bash_syms) },
+        { "libc", libc_syms, ARRAY_SIZE(libc_syms) },
+        { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) },
+};
+
+struct machine *setup_fake_machine(struct machines *machines)
+{
+        struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
+        size_t i;
+
+        if (machine == NULL) {
+                pr_debug("Not enough memory for machine setup\n");
+                return NULL;
+        }
+
+        for (i = 0; i < ARRAY_SIZE(fake_threads); i++) {
+                struct thread *thread;
+
+                thread = machine__findnew_thread(machine, fake_threads[i].pid,
+                                                 fake_threads[i].pid);
+                if (thread == NULL)
+                        goto out;
+
+                thread__set_comm(thread, fake_threads[i].comm, 0);
+        }
+
+        for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) {
+                union perf_event fake_mmap_event = {
+                        .mmap = {
+                                .header = { .misc = PERF_RECORD_MISC_USER, },
+                                .pid = fake_mmap_info[i].pid,
+                                .tid = fake_mmap_info[i].pid,
+                                .start = fake_mmap_info[i].start,
+                                .len = FAKE_MAP_LENGTH,
+                                .pgoff = 0ULL,
+                        },
+                };
+
+                strcpy(fake_mmap_event.mmap.filename,
+                       fake_mmap_info[i].filename);
+
+                machine__process_mmap_event(machine, &fake_mmap_event, NULL);
+        }
+
+        for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) {
+                size_t k;
+                struct dso *dso;
+
+                dso = __dsos__findnew(&machine->user_dsos,
+                                      fake_symbols[i].dso_name);
+                if (dso == NULL)
+                        goto out;
+
+                /* emulate dso__load() */
+                dso__set_loaded(dso, MAP__FUNCTION);
+
+                for (k = 0; k < fake_symbols[i].nr_syms; k++) {
+                        struct symbol *sym;
+                        struct fake_sym *fsym = &fake_symbols[i].syms[k];
+
+                        sym = symbol__new(fsym->start, fsym->length,
+                                          STB_GLOBAL, fsym->name);
+                        if (sym == NULL)
+                                goto out;
+
+                        symbols__insert(&dso->symbols[MAP__FUNCTION], sym);
+                }
+        }
+
+        return machine;
+
+out:
+        pr_debug("Not enough memory for machine setup\n");
+        machine__delete_threads(machine);
+        machine__delete(machine);
+        return NULL;
+}
+
+void print_hists_in(struct hists *hists)
+{
+        int i = 0;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        if (sort__need_collapse)
+                root = &hists->entries_collapsed;
+        else
+                root = hists->entries_in;
+
+        pr_info("----- %s --------\n", __func__);
+        node = rb_first(root);
+        while (node) {
+                struct hist_entry *he;
+
+                he = rb_entry(node, struct hist_entry, rb_node_in);
+
+                if (!he->filtered) {
+                        pr_info("%2d: entry: %-8s [%-8s] %20s: period = %"PRIu64"\n",
+                                i, thread__comm_str(he->thread),
+                                he->ms.map->dso->short_name,
+                                he->ms.sym->name, he->stat.period);
+                }
+
+                i++;
+                node = rb_next(node);
+        }
+}
+
+void print_hists_out(struct hists *hists)
+{
+        int i = 0;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        root = &hists->entries;
+
+        pr_info("----- %s --------\n", __func__);
+        node = rb_first(root);
+        while (node) {
+                struct hist_entry *he;
+
+                he = rb_entry(node, struct hist_entry, rb_node);
+
+                if (!he->filtered) {
+                        pr_info("%2d: entry: %8s:%5d [%-8s] %20s: period = %"PRIu64"/%"PRIu64"\n",
+                                i, thread__comm_str(he->thread), he->thread->tid,
+                                he->ms.map->dso->short_name,
+                                he->ms.sym->name, he->stat.period,
+                                he->stat_acc ? he->stat_acc->period : 0);
+                }
+
+                i++;
+                node = rb_next(node);
+        }
+}
diff --git a/tools/perf/tests/hists_common.h b/tools/perf/tests/hists_common.h
new file mode 100644
index 000000000000..888254e8665c
--- /dev/null
+++ b/tools/perf/tests/hists_common.h
@@ -0,0 +1,75 @@
+#ifndef __PERF_TESTS__HISTS_COMMON_H__
+#define __PERF_TESTS__HISTS_COMMON_H__
+
+struct machine;
+struct machines;
+
+#define FAKE_PID_PERF1  100
+#define FAKE_PID_PERF2  200
+#define FAKE_PID_BASH   300
+
+#define FAKE_MAP_PERF    0x400000
+#define FAKE_MAP_BASH    0x400000
+#define FAKE_MAP_LIBC    0x500000
+#define FAKE_MAP_KERNEL  0xf00000
+#define FAKE_MAP_LENGTH  0x100000
+
+#define FAKE_SYM_OFFSET1  700
+#define FAKE_SYM_OFFSET2  800
+#define FAKE_SYM_OFFSET3  900
+#define FAKE_SYM_LENGTH   100
+
+#define FAKE_IP_PERF_MAIN  FAKE_MAP_PERF + FAKE_SYM_OFFSET1
+#define FAKE_IP_PERF_RUN_COMMAND  FAKE_MAP_PERF + FAKE_SYM_OFFSET2
+#define FAKE_IP_PERF_CMD_RECORD  FAKE_MAP_PERF + FAKE_SYM_OFFSET3
+#define FAKE_IP_BASH_MAIN  FAKE_MAP_BASH + FAKE_SYM_OFFSET1
+#define FAKE_IP_BASH_XMALLOC  FAKE_MAP_BASH + FAKE_SYM_OFFSET2
+#define FAKE_IP_BASH_XFREE  FAKE_MAP_BASH + FAKE_SYM_OFFSET3
+#define FAKE_IP_LIBC_MALLOC  FAKE_MAP_LIBC + FAKE_SYM_OFFSET1
+#define FAKE_IP_LIBC_FREE  FAKE_MAP_LIBC + FAKE_SYM_OFFSET2
+#define FAKE_IP_LIBC_REALLOC  FAKE_MAP_LIBC + FAKE_SYM_OFFSET3
+#define FAKE_IP_KERNEL_SCHEDULE  FAKE_MAP_KERNEL + FAKE_SYM_OFFSET1
+#define FAKE_IP_KERNEL_PAGE_FAULT  FAKE_MAP_KERNEL + FAKE_SYM_OFFSET2
+#define FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN  FAKE_MAP_KERNEL + FAKE_SYM_OFFSET3
+
+/*
+ * The setup_fake_machine() provides a test environment which consists
+ * of 3 processes that have 3 mappings and in turn, have 3 symbols
+ * respectively.  See below table:
+ *
+ * Command:  Pid  Shared Object               Symbol
+ * .............  .............  ...................
+ *    perf:  100           perf  main
+ *    perf:  100           perf  run_command
+ *    perf:  100           perf  cmd_record
+ *    perf:  100           libc  malloc
+ *    perf:  100           libc  free
+ *    perf:  100           libc  realloc
+ *    perf:  100       [kernel]  schedule
+ *    perf:  100       [kernel]  page_fault
+ *    perf:  100       [kernel]  sys_perf_event_open
+ *    perf:  200           perf  main
+ *    perf:  200           perf  run_command
+ *    perf:  200           perf  cmd_record
+ *    perf:  200           libc  malloc
+ *    perf:  200           libc  free
+ *    perf:  200           libc  realloc
+ *    perf:  200       [kernel]  schedule
+ *    perf:  200       [kernel]  page_fault
+ *    perf:  200       [kernel]  sys_perf_event_open
+ *    bash:  300           bash  main
+ *    bash:  300           bash  xmalloc
+ *    bash:  300           bash  xfree
+ *    bash:  300           libc  malloc
+ *    bash:  300           libc  free
+ *    bash:  300           libc  realloc
+ *    bash:  300       [kernel]  schedule
+ *    bash:  300       [kernel]  page_fault
+ *    bash:  300       [kernel]  sys_perf_event_open
+ */
+struct machine *setup_fake_machine(struct machines *machines);
+
+void print_hists_in(struct hists *hists);
+void print_hists_out(struct hists *hists);
+
+#endif /* __PERF_TESTS__HISTS_COMMON_H__ */
diff --git a/tools/perf/tests/hists_cumulate.c b/tools/perf/tests/hists_cumulate.c
new file mode 100644
index 000000000000..0ac240db2e24
--- /dev/null
+++ b/tools/perf/tests/hists_cumulate.c
@@ -0,0 +1,726 @@
+#include "perf.h"
+#include "util/debug.h"
+#include "util/symbol.h"
+#include "util/sort.h"
+#include "util/evsel.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/thread.h"
+#include "util/parse-events.h"
+#include "tests/tests.h"
+#include "tests/hists_common.h"
+
+struct sample {
+        u32 pid;
+        u64 ip;
+        struct thread *thread;
+        struct map *map;
+        struct symbol *sym;
+};
+
+/* For the numbers, see hists_common.c */
+static struct sample fake_samples[] = {
+        /* perf [kernel] schedule() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
+        /* perf [perf]   main() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
+        /* perf [perf]   cmd_record() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
+        /* perf [libc]   malloc() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
+        /* perf [libc]   free() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
+        /* perf [perf]   main() */
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
+        /* perf [kernel] page_fault() */
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+        /* bash [bash]   main() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
+        /* bash [bash]   xmalloc() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
+        /* bash [kernel] page_fault() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+};
+
+/*
+ * Will be casted to struct ip_callchain which has all 64 bit entries
+ * of nr and ips[].
+ */
+static u64 fake_callchains[][10] = {
+        /*   schedule => run_command => main */
+        { 3, FAKE_IP_KERNEL_SCHEDULE, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
+        /*   main  */
+        { 1, FAKE_IP_PERF_MAIN, },
+        /*   cmd_record => run_command => main */
+        { 3, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
+        /*   malloc => cmd_record => run_command => main */
+        { 4, FAKE_IP_LIBC_MALLOC, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
+             FAKE_IP_PERF_MAIN, },
+        /*   free => cmd_record => run_command => main */
+        { 4, FAKE_IP_LIBC_FREE, FAKE_IP_PERF_CMD_RECORD, FAKE_IP_PERF_RUN_COMMAND,
+             FAKE_IP_PERF_MAIN, },
+        /*   main */
+        { 1, FAKE_IP_PERF_MAIN, },
+        /*   page_fault => sys_perf_event_open => run_command => main */
+        { 4, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN,
+             FAKE_IP_PERF_RUN_COMMAND, FAKE_IP_PERF_MAIN, },
+        /*   main */
+        { 1, FAKE_IP_BASH_MAIN, },
+        /*   xmalloc => malloc => xmalloc => malloc => xmalloc => main */
+        { 6, FAKE_IP_BASH_XMALLOC, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC,
+             FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_XMALLOC, FAKE_IP_BASH_MAIN, },
+        /*   page_fault => malloc => main */
+        { 3, FAKE_IP_KERNEL_PAGE_FAULT, FAKE_IP_LIBC_MALLOC, FAKE_IP_BASH_MAIN, },
+};
+
+static int add_hist_entries(struct hists *hists, struct machine *machine)
+{
+        struct addr_location al;
+        struct perf_evsel *evsel = hists_to_evsel(hists);
+        struct perf_sample sample = { .period = 1000, };
+        size_t i;
+
+        for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
+                const union perf_event event = {
+                        .header = {
+                                .misc = PERF_RECORD_MISC_USER,
+                        },
+                };
+                struct hist_entry_iter iter = {
+                        .hide_unresolved = false,
+                };
+
+                if (symbol_conf.cumulate_callchain)
+                        iter.ops = &hist_iter_cumulative;
+                else
+                        iter.ops = &hist_iter_normal;
+
+                sample.pid = fake_samples[i].pid;
+                sample.tid = fake_samples[i].pid;
+                sample.ip = fake_samples[i].ip;
+                sample.callchain = (struct ip_callchain *)fake_callchains[i];
+
+                if (perf_event__preprocess_sample(&event, machine, &al,
+                                                  &sample) < 0)
+                        goto out;
+
+                if (hist_entry_iter__add(&iter, &al, evsel, &sample,
+                                         PERF_MAX_STACK_DEPTH, NULL) < 0)
+                        goto out;
+
+                fake_samples[i].thread = al.thread;
+                fake_samples[i].map = al.map;
+                fake_samples[i].sym = al.sym;
+        }
+
+        return TEST_OK;
+
+out:
+        pr_debug("Not enough memory for adding a hist entry\n");
+        return TEST_FAIL;
+}
+
+static void del_hist_entries(struct hists *hists)
+{
+        struct hist_entry *he;
+        struct rb_root *root_in;
+        struct rb_root *root_out;
+        struct rb_node *node;
+
+        if (sort__need_collapse)
+                root_in = &hists->entries_collapsed;
+        else
+                root_in = hists->entries_in;
+
+        root_out = &hists->entries;
+
+        while (!RB_EMPTY_ROOT(root_out)) {
+                node = rb_first(root_out);
+
+                he = rb_entry(node, struct hist_entry, rb_node);
+                rb_erase(node, root_out);
+                rb_erase(&he->rb_node_in, root_in);
+                hist_entry__free(he);
+        }
+}
+
+typedef int (*test_fn_t)(struct perf_evsel *, struct machine *);
+
+#define COMM(he)  (thread__comm_str(he->thread))
+#define DSO(he)   (he->ms.map->dso->short_name)
+#define SYM(he)   (he->ms.sym->name)
+#define CPU(he)   (he->cpu)
+#define PID(he)   (he->thread->tid)
+#define DEPTH(he) (he->callchain->max_depth)
+#define CDSO(cl)  (cl->ms.map->dso->short_name)
+#define CSYM(cl)  (cl->ms.sym->name)
+
+struct result {
+        u64 children;
+        u64 self;
+        const char *comm;
+        const char *dso;
+        const char *sym;
+};
+
+struct callchain_result {
+        u64 nr;
+        struct {
+                const char *dso;
+                const char *sym;
+        } node[10];
+};
+
+static int do_test(struct hists *hists, struct result *expected, size_t nr_expected,
+                   struct callchain_result *expected_callchain, size_t nr_callchain)
+{
+        char buf[32];
+        size_t i, c;
+        struct hist_entry *he;
+        struct rb_root *root;
+        struct rb_node *node;
+        struct callchain_node *cnode;
+        struct callchain_list *clist;
+
+        /*
+         * adding and deleting hist entries must be done outside of this
+         * function since TEST_ASSERT_VAL() returns in case of failure.
+         */
+        hists__collapse_resort(hists, NULL);
+        hists__output_resort(hists);
+
+        if (verbose > 2) {
+                pr_info("use callchain: %d, cumulate callchain: %d\n",
+                        symbol_conf.use_callchain,
+                        symbol_conf.cumulate_callchain);
+                print_hists_out(hists);
+        }
+
+        root = &hists->entries;
+        for (node = rb_first(root), i = 0;
+             node && (he = rb_entry(node, struct hist_entry, rb_node));
+             node = rb_next(node), i++) {
+                scnprintf(buf, sizeof(buf), "Invalid hist entry #%zd", i);
+
+                TEST_ASSERT_VAL("Incorrect number of hist entry",
+                                i < nr_expected);
+                TEST_ASSERT_VAL(buf, he->stat.period == expected[i].self &&
+                                !strcmp(COMM(he), expected[i].comm) &&
+                                !strcmp(DSO(he), expected[i].dso) &&
+                                !strcmp(SYM(he), expected[i].sym));
+
+                if (symbol_conf.cumulate_callchain)
+                        TEST_ASSERT_VAL(buf, he->stat_acc->period == expected[i].children);
+
+                if (!symbol_conf.use_callchain)
+                        continue;
+
+                /* check callchain entries */
+                root = &he->callchain->node.rb_root;
+                cnode = rb_entry(rb_first(root), struct callchain_node, rb_node);
+
+                c = 0;
+                list_for_each_entry(clist, &cnode->val, list) {
+                        scnprintf(buf, sizeof(buf), "Invalid callchain entry #%zd/%zd", i, c);
+
+                        TEST_ASSERT_VAL("Incorrect number of callchain entry",
+                                        c < expected_callchain[i].nr);
+                        TEST_ASSERT_VAL(buf,
+                                !strcmp(CDSO(clist), expected_callchain[i].node[c].dso) &&
+                                !strcmp(CSYM(clist), expected_callchain[i].node[c].sym));
+                        c++;
+                }
+                /* TODO: handle multiple child nodes properly */
+                TEST_ASSERT_VAL("Incorrect number of callchain entry",
+                                c <= expected_callchain[i].nr);
+        }
+        TEST_ASSERT_VAL("Incorrect number of hist entry",
+                        i == nr_expected);
+        TEST_ASSERT_VAL("Incorrect number of callchain entry",
+                        !symbol_conf.use_callchain || nr_expected == nr_callchain);
+        return 0;
+}
+
+/* NO callchain + NO children */
+static int test1(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        /*
+         * expected output:
+         *
+         * Overhead  Command  Shared Object          Symbol
+         * ========  =======  =============  ==============
+         *   20.00%     perf  perf           [.] main
+         *   10.00%     bash  [kernel]       [k] page_fault
+         *   10.00%     bash  bash           [.] main
+         *   10.00%     bash  bash           [.] xmalloc
+         *   10.00%     perf  [kernel]       [k] page_fault
+         *   10.00%     perf  [kernel]       [k] schedule
+         *   10.00%     perf  libc           [.] free
+         *   10.00%     perf  libc           [.] malloc
+         *   10.00%     perf  perf           [.] cmd_record
+         */
+        struct result expected[] = {
+                { 0, 2000, "perf", "perf",     "main" },
+                { 0, 1000, "bash", "[kernel]", "page_fault" },
+                { 0, 1000, "bash", "bash",     "main" },
+                { 0, 1000, "bash", "bash",     "xmalloc" },
+                { 0, 1000, "perf", "[kernel]", "page_fault" },
+                { 0, 1000, "perf", "[kernel]", "schedule" },
+                { 0, 1000, "perf", "libc",     "free" },
+                { 0, 1000, "perf", "libc",     "malloc" },
+                { 0, 1000, "perf", "perf",     "cmd_record" },
+        };
+
+        symbol_conf.use_callchain = false;
+        symbol_conf.cumulate_callchain = false;
+
+        setup_sorting();
+        callchain_register_param(&callchain_param);
+
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* callcain + NO children */
+static int test2(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        /*
+         * expected output:
+         *
+         * Overhead  Command  Shared Object          Symbol
+         * ========  =======  =============  ==============
+         *   20.00%     perf  perf           [.] main
+         *              |
+         *              --- main
+         *
+         *   10.00%     bash  [kernel]       [k] page_fault
+         *              |
+         *              --- page_fault
+         *                  malloc
+         *                  main
+         *
+         *   10.00%     bash  bash           [.] main
+         *              |
+         *              --- main
+         *
+         *   10.00%     bash  bash           [.] xmalloc
+         *              |
+         *              --- xmalloc
+         *                  malloc
+         *                  xmalloc     <--- NOTE: there's a cycle
+         *                  malloc
+         *                  xmalloc
+         *                  main
+         *
+         *   10.00%     perf  [kernel]       [k] page_fault
+         *              |
+         *              --- page_fault
+         *                  sys_perf_event_open
+         *                  run_command
+         *                  main
+         *
+         *   10.00%     perf  [kernel]       [k] schedule
+         *              |
+         *              --- schedule
+         *                  run_command
+         *                  main
+         *
+         *   10.00%     perf  libc           [.] free
+         *              |
+         *              --- free
+         *                  cmd_record
+         *                  run_command
+         *                  main
+         *
+         *   10.00%     perf  libc           [.] malloc
+         *              |
+         *              --- malloc
+         *                  cmd_record
+         *                  run_command
+         *                  main
+         *
+         *   10.00%     perf  perf           [.] cmd_record
+         *              |
+         *              --- cmd_record
+         *                  run_command
+         *                  main
+         *
+         */
+        struct result expected[] = {
+                { 0, 2000, "perf", "perf",     "main" },
+                { 0, 1000, "bash", "[kernel]", "page_fault" },
+                { 0, 1000, "bash", "bash",     "main" },
+                { 0, 1000, "bash", "bash",     "xmalloc" },
+                { 0, 1000, "perf", "[kernel]", "page_fault" },
+                { 0, 1000, "perf", "[kernel]", "schedule" },
+                { 0, 1000, "perf", "libc",     "free" },
+                { 0, 1000, "perf", "libc",     "malloc" },
+                { 0, 1000, "perf", "perf",     "cmd_record" },
+        };
+        struct callchain_result expected_callchain[] = {
+                {
+                        1, {    { "perf",     "main" }, },
+                },
+                {
+                        3, {    { "[kernel]", "page_fault" },
+                                { "libc",     "malloc" },
+                                { "bash",     "main" }, },
+                },
+                {
+                        1, {    { "bash",     "main" }, },
+                },
+                {
+                        6, {    { "bash",     "xmalloc" },
+                                { "libc",     "malloc" },
+                                { "bash",     "xmalloc" },
+                                { "libc",     "malloc" },
+                                { "bash",     "xmalloc" },
+                                { "bash",     "main" }, },
+                },
+                {
+                        4, {    { "[kernel]", "page_fault" },
+                                { "[kernel]", "sys_perf_event_open" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        3, {    { "[kernel]", "schedule" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        4, {    { "libc",     "free" },
+                                { "perf",     "cmd_record" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        4, {    { "libc",     "malloc" },
+                                { "perf",     "cmd_record" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        3, {    { "perf",     "cmd_record" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+        };
+
+        symbol_conf.use_callchain = true;
+        symbol_conf.cumulate_callchain = false;
+
+        setup_sorting();
+        callchain_register_param(&callchain_param);
+
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        err = do_test(hists, expected, ARRAY_SIZE(expected),
+                      expected_callchain, ARRAY_SIZE(expected_callchain));
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* NO callchain + children */
+static int test3(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        /*
+         * expected output:
+         *
+         * Children      Self  Command  Shared Object                   Symbol
+         * ========  ========  =======  =============  =======================
+         *   70.00%    20.00%     perf  perf           [.] main
+         *   50.00%     0.00%     perf  perf           [.] run_command
+         *   30.00%    10.00%     bash  bash           [.] main
+         *   30.00%    10.00%     perf  perf           [.] cmd_record
+         *   20.00%     0.00%     bash  libc           [.] malloc
+         *   10.00%    10.00%     bash  [kernel]       [k] page_fault
+         *   10.00%    10.00%     perf  [kernel]       [k] schedule
+         *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open
+         *   10.00%    10.00%     perf  [kernel]       [k] page_fault
+         *   10.00%    10.00%     perf  libc           [.] free
+         *   10.00%    10.00%     perf  libc           [.] malloc
+         *   10.00%    10.00%     bash  bash           [.] xmalloc
+         */
+        struct result expected[] = {
+                { 7000, 2000, "perf", "perf",     "main" },
+                { 5000,    0, "perf", "perf",     "run_command" },
+                { 3000, 1000, "bash", "bash",     "main" },
+                { 3000, 1000, "perf", "perf",     "cmd_record" },
+                { 2000,    0, "bash", "libc",     "malloc" },
+                { 1000, 1000, "bash", "[kernel]", "page_fault" },
+                { 1000, 1000, "perf", "[kernel]", "schedule" },
+                { 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },
+                { 1000, 1000, "perf", "[kernel]", "page_fault" },
+                { 1000, 1000, "perf", "libc",     "free" },
+                { 1000, 1000, "perf", "libc",     "malloc" },
+                { 1000, 1000, "bash", "bash",     "xmalloc" },
+        };
+
+        symbol_conf.use_callchain = false;
+        symbol_conf.cumulate_callchain = true;
+
+        setup_sorting();
+        callchain_register_param(&callchain_param);
+
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        err = do_test(hists, expected, ARRAY_SIZE(expected), NULL, 0);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* callchain + children */
+static int test4(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        /*
+         * expected output:
+         *
+         * Children      Self  Command  Shared Object                   Symbol
+         * ========  ========  =======  =============  =======================
+         *   70.00%    20.00%     perf  perf           [.] main
+         *              |
+         *              --- main
+         *
+         *   50.00%     0.00%     perf  perf           [.] run_command
+         *              |
+         *              --- run_command
+         *                  main
+         *
+         *   30.00%    10.00%     bash  bash           [.] main
+         *              |
+         *              --- main
+         *
+         *   30.00%    10.00%     perf  perf           [.] cmd_record
+         *              |
+         *              --- cmd_record
+         *                  run_command
+         *                  main
+         *
+         *   20.00%     0.00%     bash  libc           [.] malloc
+         *              |
+         *              --- malloc
+         *                 |
+         *                 |--50.00%-- xmalloc
+         *                 |           main
+         *                  --50.00%-- main
+         *
+         *   10.00%    10.00%     bash  [kernel]       [k] page_fault
+         *              |
+         *              --- page_fault
+         *                  malloc
+         *                  main
+         *
+         *   10.00%    10.00%     perf  [kernel]       [k] schedule
+         *              |
+         *              --- schedule
+         *                  run_command
+         *                  main
+         *
+         *   10.00%     0.00%     perf  [kernel]       [k] sys_perf_event_open
+         *              |
+         *              --- sys_perf_event_open
+         *                  run_command
+         *                  main
+         *
+         *   10.00%    10.00%     perf  [kernel]       [k] page_fault
+         *              |
+         *              --- page_fault
+         *                  sys_perf_event_open
+         *                  run_command
+         *                  main
+         *
+         *   10.00%    10.00%     perf  libc           [.] free
+         *              |
+         *              --- free
+         *                  cmd_record
+         *                  run_command
+         *                  main
+         *
+         *   10.00%    10.00%     perf  libc           [.] malloc
+         *              |
+         *              --- malloc
+         *                  cmd_record
+         *                  run_command
+         *                  main
+         *
+         *   10.00%    10.00%     bash  bash           [.] xmalloc
+         *              |
+         *              --- xmalloc
+         *                  malloc
+         *                  xmalloc     <--- NOTE: there's a cycle
+         *                  malloc
+         *                  xmalloc
+         *                  main
+         *
+         */
+        struct result expected[] = {
+                { 7000, 2000, "perf", "perf",     "main" },
+                { 5000,    0, "perf", "perf",     "run_command" },
+                { 3000, 1000, "bash", "bash",     "main" },
+                { 3000, 1000, "perf", "perf",     "cmd_record" },
+                { 2000,    0, "bash", "libc",     "malloc" },
+                { 1000, 1000, "bash", "[kernel]", "page_fault" },
+                { 1000, 1000, "perf", "[kernel]", "schedule" },
+                { 1000,    0, "perf", "[kernel]", "sys_perf_event_open" },
+                { 1000, 1000, "perf", "[kernel]", "page_fault" },
+                { 1000, 1000, "perf", "libc",     "free" },
+                { 1000, 1000, "perf", "libc",     "malloc" },
+                { 1000, 1000, "bash", "bash",     "xmalloc" },
+        };
+        struct callchain_result expected_callchain[] = {
+                {
+                        1, {    { "perf",     "main" }, },
+                },
+                {
+                        2, {    { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        1, {    { "bash",     "main" }, },
+                },
+                {
+                        3, {    { "perf",     "cmd_record" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        4, {    { "libc",     "malloc" },
+                                { "bash",     "xmalloc" },
+                                { "bash",     "main" },
+                                { "bash",     "main" }, },
+                },
+                {
+                        3, {    { "[kernel]", "page_fault" },
+                                { "libc",     "malloc" },
+                                { "bash",     "main" }, },
+                },
+                {
+                        3, {    { "[kernel]", "schedule" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        3, {    { "[kernel]", "sys_perf_event_open" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        4, {    { "[kernel]", "page_fault" },
+                                { "[kernel]", "sys_perf_event_open" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        4, {    { "libc",     "free" },
+                                { "perf",     "cmd_record" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        4, {    { "libc",     "malloc" },
+                                { "perf",     "cmd_record" },
+                                { "perf",     "run_command" },
+                                { "perf",     "main" }, },
+                },
+                {
+                        6, {    { "bash",     "xmalloc" },
+                                { "libc",     "malloc" },
+                                { "bash",     "xmalloc" },
+                                { "libc",     "malloc" },
+                                { "bash",     "xmalloc" },
+                                { "bash",     "main" }, },
+                },
+        };
+
+        symbol_conf.use_callchain = true;
+        symbol_conf.cumulate_callchain = true;
+
+        setup_sorting();
+        callchain_register_param(&callchain_param);
+
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        err = do_test(hists, expected, ARRAY_SIZE(expected),
+                      expected_callchain, ARRAY_SIZE(expected_callchain));
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+int test__hists_cumulate(void)
+{
+        int err = TEST_FAIL;
+        struct machines machines;
+        struct machine *machine;
+        struct perf_evsel *evsel;
+        struct perf_evlist *evlist = perf_evlist__new();
+        size_t i;
+        test_fn_t testcases[] = {
+                test1,
+                test2,
+                test3,
+                test4,
+        };
+
+        TEST_ASSERT_VAL("No memory", evlist);
+
+        err = parse_events(evlist, "cpu-clock");
+        if (err)
+                goto out;
+
+        machines__init(&machines);
+
+        /* setup threads/dso/map/symbols also */
+        machine = setup_fake_machine(&machines);
+        if (!machine)
+                goto out;
+
+        if (verbose > 1)
+                machine__fprintf(machine, stderr);
+
+        evsel = perf_evlist__first(evlist);
+
+        for (i = 0; i < ARRAY_SIZE(testcases); i++) {
+                err = testcases[i](evsel, machine);
+                if (err < 0)
+                        break;
+        }
+
+out:
+        /* tear down everything */
+        perf_evlist__delete(evlist);
+        machines__exit(&machines);
+
+        return err;
+}
diff --git a/tools/perf/tests/hists_filter.c b/tools/perf/tests/hists_filter.c
new file mode 100644
index 000000000000..821f581fd930
--- /dev/null
+++ b/tools/perf/tests/hists_filter.c
@@ -0,0 +1,289 @@
+#include "perf.h"
+#include "util/debug.h"
+#include "util/symbol.h"
+#include "util/sort.h"
+#include "util/evsel.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/thread.h"
+#include "util/parse-events.h"
+#include "tests/tests.h"
+#include "tests/hists_common.h"
+
+struct sample {
+        u32 pid;
+        u64 ip;
+        struct thread *thread;
+        struct map *map;
+        struct symbol *sym;
+};
+
+/* For the numbers, see hists_common.c */
+static struct sample fake_samples[] = {
+        /* perf [kernel] schedule() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
+        /* perf [perf]   main() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
+        /* perf [libc]   malloc() */
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
+        /* perf [perf]   main() */
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, }, /* will be merged */
+        /* perf [perf]   cmd_record() */
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, },
+        /* perf [kernel] page_fault() */
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+        /* bash [bash]   main() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
+        /* bash [bash]   xmalloc() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
+        /* bash [libc]   malloc() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_MALLOC, },
+        /* bash [kernel] page_fault() */
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+};
+
+static int add_hist_entries(struct perf_evlist *evlist,
+                            struct machine *machine __maybe_unused)
+{
+        struct perf_evsel *evsel;
+        struct addr_location al;
+        struct perf_sample sample = { .period = 100, };
+        size_t i;
+
+        /*
+         * each evsel will have 10 samples but the 4th sample
+         * (perf [perf] main) will be collapsed to an existing entry
+         * so total 9 entries will be in the tree.
+         */
+        evlist__for_each(evlist, evsel) {
+                for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
+                        const union perf_event event = {
+                                .header = {
+                                        .misc = PERF_RECORD_MISC_USER,
+                                },
+                        };
+                        struct hist_entry_iter iter = {
+                                .ops = &hist_iter_normal,
+                                .hide_unresolved = false,
+                        };
+
+                        /* make sure it has no filter at first */
+                        evsel->hists.thread_filter = NULL;
+                        evsel->hists.dso_filter = NULL;
+                        evsel->hists.symbol_filter_str = NULL;
+
+                        sample.pid = fake_samples[i].pid;
+                        sample.tid = fake_samples[i].pid;
+                        sample.ip = fake_samples[i].ip;
+
+                        if (perf_event__preprocess_sample(&event, machine, &al,
+                                                          &sample) < 0)
+                                goto out;
+
+                        if (hist_entry_iter__add(&iter, &al, evsel, &sample,
+                                                 PERF_MAX_STACK_DEPTH, NULL) < 0)
+                                goto out;
+
+                        fake_samples[i].thread = al.thread;
+                        fake_samples[i].map = al.map;
+                        fake_samples[i].sym = al.sym;
+                }
+        }
+
+        return 0;
+
+out:
+        pr_debug("Not enough memory for adding a hist entry\n");
+        return TEST_FAIL;
+}
+
+int test__hists_filter(void)
+{
+        int err = TEST_FAIL;
+        struct machines machines;
+        struct machine *machine;
+        struct perf_evsel *evsel;
+        struct perf_evlist *evlist = perf_evlist__new();
+
+        TEST_ASSERT_VAL("No memory", evlist);
+
+        err = parse_events(evlist, "cpu-clock");
+        if (err)
+                goto out;
+        err = parse_events(evlist, "task-clock");
+        if (err)
+                goto out;
+
+        /* default sort order (comm,dso,sym) will be used */
+        if (setup_sorting() < 0)
+                goto out;
+
+        machines__init(&machines);
+
+        /* setup threads/dso/map/symbols also */
+        machine = setup_fake_machine(&machines);
+        if (!machine)
+                goto out;
+
+        if (verbose > 1)
+                machine__fprintf(machine, stderr);
+
+        /* process sample events */
+        err = add_hist_entries(evlist, machine);
+        if (err < 0)
+                goto out;
+
+        evlist__for_each(evlist, evsel) {
+                struct hists *hists = &evsel->hists;
+
+                hists__collapse_resort(hists, NULL);
+                hists__output_resort(hists);
+
+                if (verbose > 2) {
+                        pr_info("Normal histogram\n");
+                        print_hists_out(hists);
+                }
+
+                TEST_ASSERT_VAL("Invalid nr samples",
+                                hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+                TEST_ASSERT_VAL("Invalid nr hist entries",
+                                hists->nr_entries == 9);
+                TEST_ASSERT_VAL("Invalid total period",
+                                hists->stats.total_period == 1000);
+                TEST_ASSERT_VAL("Unmatched nr samples",
+                                hists->stats.nr_events[PERF_RECORD_SAMPLE] ==
+                                hists->stats.nr_non_filtered_samples);
+                TEST_ASSERT_VAL("Unmatched nr hist entries",
+                                hists->nr_entries == hists->nr_non_filtered_entries);
+                TEST_ASSERT_VAL("Unmatched total period",
+                                hists->stats.total_period ==
+                                hists->stats.total_non_filtered_period);
+
+                /* now applying thread filter for 'bash' */
+                evsel->hists.thread_filter = fake_samples[9].thread;
+                hists__filter_by_thread(hists);
+
+                if (verbose > 2) {
+                        pr_info("Histogram for thread filter\n");
+                        print_hists_out(hists);
+                }
+
+                /* normal stats should be invariant */
+                TEST_ASSERT_VAL("Invalid nr samples",
+                                hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+                TEST_ASSERT_VAL("Invalid nr hist entries",
+                                hists->nr_entries == 9);
+                TEST_ASSERT_VAL("Invalid total period",
+                                hists->stats.total_period == 1000);
+
+                /* but filter stats are changed */
+                TEST_ASSERT_VAL("Unmatched nr samples for thread filter",
+                                hists->stats.nr_non_filtered_samples == 4);
+                TEST_ASSERT_VAL("Unmatched nr hist entries for thread filter",
+                                hists->nr_non_filtered_entries == 4);
+                TEST_ASSERT_VAL("Unmatched total period for thread filter",
+                                hists->stats.total_non_filtered_period == 400);
+
+                /* remove thread filter first */
+                evsel->hists.thread_filter = NULL;
+                hists__filter_by_thread(hists);
+
+                /* now applying dso filter for 'kernel' */
+                evsel->hists.dso_filter = fake_samples[0].map->dso;
+                hists__filter_by_dso(hists);
+
+                if (verbose > 2) {
+                        pr_info("Histogram for dso filter\n");
+                        print_hists_out(hists);
+                }
+
+                /* normal stats should be invariant */
+                TEST_ASSERT_VAL("Invalid nr samples",
+                                hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+                TEST_ASSERT_VAL("Invalid nr hist entries",
+                                hists->nr_entries == 9);
+                TEST_ASSERT_VAL("Invalid total period",
+                                hists->stats.total_period == 1000);
+
+                /* but filter stats are changed */
+                TEST_ASSERT_VAL("Unmatched nr samples for dso filter",
+                                hists->stats.nr_non_filtered_samples == 3);
+                TEST_ASSERT_VAL("Unmatched nr hist entries for dso filter",
+                                hists->nr_non_filtered_entries == 3);
+                TEST_ASSERT_VAL("Unmatched total period for dso filter",
+                                hists->stats.total_non_filtered_period == 300);
+
+                /* remove dso filter first */
+                evsel->hists.dso_filter = NULL;
+                hists__filter_by_dso(hists);
+
+                /*
+                 * now applying symbol filter for 'main'.  Also note that
+                 * there's 3 samples that have 'main' symbol but the 4th
+                 * entry of fake_samples was collapsed already so it won't
+                 * be counted as a separate entry but the sample count and
+                 * total period will be remained.
+                 */
+                evsel->hists.symbol_filter_str = "main";
+                hists__filter_by_symbol(hists);
+
+                if (verbose > 2) {
+                        pr_info("Histogram for symbol filter\n");
+                        print_hists_out(hists);
+                }
+
+                /* normal stats should be invariant */
+                TEST_ASSERT_VAL("Invalid nr samples",
+                                hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+                TEST_ASSERT_VAL("Invalid nr hist entries",
+                                hists->nr_entries == 9);
+                TEST_ASSERT_VAL("Invalid total period",
+                                hists->stats.total_period == 1000);
+
+                /* but filter stats are changed */
+                TEST_ASSERT_VAL("Unmatched nr samples for symbol filter",
+                                hists->stats.nr_non_filtered_samples == 3);
+                TEST_ASSERT_VAL("Unmatched nr hist entries for symbol filter",
+                                hists->nr_non_filtered_entries == 2);
+                TEST_ASSERT_VAL("Unmatched total period for symbol filter",
+                                hists->stats.total_non_filtered_period == 300);
+
+                /* now applying all filters at once. */
+                evsel->hists.thread_filter = fake_samples[1].thread;
+                evsel->hists.dso_filter = fake_samples[1].map->dso;
+                hists__filter_by_thread(hists);
+                hists__filter_by_dso(hists);
+
+                if (verbose > 2) {
+                        pr_info("Histogram for all filters\n");
+                        print_hists_out(hists);
+                }
+
+                /* normal stats should be invariant */
+                TEST_ASSERT_VAL("Invalid nr samples",
+                                hists->stats.nr_events[PERF_RECORD_SAMPLE] == 10);
+                TEST_ASSERT_VAL("Invalid nr hist entries",
+                                hists->nr_entries == 9);
+                TEST_ASSERT_VAL("Invalid total period",
+                                hists->stats.total_period == 1000);
+
+                /* but filter stats are changed */
+                TEST_ASSERT_VAL("Unmatched nr samples for all filter",
+                                hists->stats.nr_non_filtered_samples == 2);
+                TEST_ASSERT_VAL("Unmatched nr hist entries for all filter",
+                                hists->nr_non_filtered_entries == 1);
+                TEST_ASSERT_VAL("Unmatched total period for all filter",
+                                hists->stats.total_non_filtered_period == 200);
+        }
+
+
+        err = TEST_OK;
+
+out:
+        /* tear down everything */
+        perf_evlist__delete(evlist);
+        reset_output_field();
+        machines__exit(&machines);
+
+        return err;
+}
diff --git a/tools/perf/tests/hists_link.c b/tools/perf/tests/hists_link.c
index 7ccbc7b6ae77..d4b34b0f50a2 100644
--- a/tools/perf/tests/hists_link.c
+++ b/tools/perf/tests/hists_link.c
@@ -8,145 +8,7 @@
 #include "machine.h"
 #include "thread.h"
 #include "parse-events.h"
-
-static struct {
-        u32 pid;
-        const char *comm;
-} fake_threads[] = {
-        { 100, "perf" },
-        { 200, "perf" },
-        { 300, "bash" },
-};
-
-static struct {
-        u32 pid;
-        u64 start;
-        const char *filename;
-} fake_mmap_info[] = {
-        { 100, 0x40000, "perf" },
-        { 100, 0x50000, "libc" },
-        { 100, 0xf0000, "[kernel]" },
-        { 200, 0x40000, "perf" },
-        { 200, 0x50000, "libc" },
-        { 200, 0xf0000, "[kernel]" },
-        { 300, 0x40000, "bash" },
-        { 300, 0x50000, "libc" },
-        { 300, 0xf0000, "[kernel]" },
-};
-
-struct fake_sym {
-        u64 start;
-        u64 length;
-        const char *name;
-};
-
-static struct fake_sym perf_syms[] = {
-        { 700, 100, "main" },
-        { 800, 100, "run_command" },
-        { 900, 100, "cmd_record" },
-};
-
-static struct fake_sym bash_syms[] = {
-        { 700, 100, "main" },
-        { 800, 100, "xmalloc" },
-        { 900, 100, "xfree" },
-};
-
-static struct fake_sym libc_syms[] = {
-        { 700, 100, "malloc" },
-        { 800, 100, "free" },
-        { 900, 100, "realloc" },
-};
-
-static struct fake_sym kernel_syms[] = {
-        { 700, 100, "schedule" },
-        { 800, 100, "page_fault" },
-        { 900, 100, "sys_perf_event_open" },
-};
-
-static struct {
-        const char *dso_name;
-        struct fake_sym *syms;
-        size_t nr_syms;
-} fake_symbols[] = {
-        { "perf", perf_syms, ARRAY_SIZE(perf_syms) },
-        { "bash", bash_syms, ARRAY_SIZE(bash_syms) },
-        { "libc", libc_syms, ARRAY_SIZE(libc_syms) },
-        { "[kernel]", kernel_syms, ARRAY_SIZE(kernel_syms) },
-};
-
-static struct machine *setup_fake_machine(struct machines *machines)
-{
-        struct machine *machine = machines__find(machines, HOST_KERNEL_ID);
-        size_t i;
-
-        if (machine == NULL) {
-                pr_debug("Not enough memory for machine setup\n");
-                return NULL;
-        }
-
-        for (i = 0; i < ARRAY_SIZE(fake_threads); i++) {
-                struct thread *thread;
-
-                thread = machine__findnew_thread(machine, fake_threads[i].pid,
-                                                 fake_threads[i].pid);
-                if (thread == NULL)
-                        goto out;
-
-                thread__set_comm(thread, fake_threads[i].comm, 0);
-        }
-
-        for (i = 0; i < ARRAY_SIZE(fake_mmap_info); i++) {
-                union perf_event fake_mmap_event = {
-                        .mmap = {
-                                .header = { .misc = PERF_RECORD_MISC_USER, },
-                                .pid = fake_mmap_info[i].pid,
-                                .tid = fake_mmap_info[i].pid,
-                                .start = fake_mmap_info[i].start,
-                                .len = 0x1000ULL,
-                                .pgoff = 0ULL,
-                        },
-                };
-
-                strcpy(fake_mmap_event.mmap.filename,
-                       fake_mmap_info[i].filename);
-
-                machine__process_mmap_event(machine, &fake_mmap_event, NULL);
-        }
-
-        for (i = 0; i < ARRAY_SIZE(fake_symbols); i++) {
-                size_t k;
-                struct dso *dso;
-
-                dso = __dsos__findnew(&machine->user_dsos,
-                                      fake_symbols[i].dso_name);
-                if (dso == NULL)
-                        goto out;
-
-                /* emulate dso__load() */
-                dso__set_loaded(dso, MAP__FUNCTION);
-
-                for (k = 0; k < fake_symbols[i].nr_syms; k++) {
-                        struct symbol *sym;
-                        struct fake_sym *fsym = &fake_symbols[i].syms[k];
-
-                        sym = symbol__new(fsym->start, fsym->length,
-                                          STB_GLOBAL, fsym->name);
-                        if (sym == NULL)
-                                goto out;
-
-                        symbols__insert(&dso->symbols[MAP__FUNCTION], sym);
-                }
-        }
-
-        return machine;
-
-out:
-        pr_debug("Not enough memory for machine setup\n");
-        machine__delete_threads(machine);
-        machine__delete(machine);
-        return NULL;
-}
+#include "hists_common.h"
 
 struct sample {
         u32 pid;
@@ -156,43 +18,44 @@ struct sample {
         struct symbol *sym;
 };
 
+/* For the numbers, see hists_common.c */
 static struct sample fake_common_samples[] = {
         /* perf [kernel] schedule() */
-        { .pid = 100, .ip = 0xf0000 + 700, },
+        { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
         /* perf [perf]   main() */
-        { .pid = 200, .ip = 0x40000 + 700, },
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
         /* perf [perf]   cmd_record() */
-        { .pid = 200, .ip = 0x40000 + 900, },
+        { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_CMD_RECORD, },
         /* bash [bash]   xmalloc() */
-        { .pid = 300, .ip = 0x40000 + 800, },
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
         /* bash [libc]   malloc() */
-        { .pid = 300, .ip = 0x50000 + 700, },
+        { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_MALLOC, },
 };
 
 static struct sample fake_samples[][5] = {
         {
                 /* perf [perf]   run_command() */
-                { .pid = 100, .ip = 0x40000 + 800, },
+                { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_RUN_COMMAND, },
                 /* perf [libc]   malloc() */
-                { .pid = 100, .ip = 0x50000 + 700, },
+                { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
                 /* perf [kernel] page_fault() */
-                { .pid = 100, .ip = 0xf0000 + 800, },
+                { .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
                 /* perf [kernel] sys_perf_event_open() */
-                { .pid = 200, .ip = 0xf0000 + 900, },
+                { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_SYS_PERF_EVENT_OPEN, },
                 /* bash [libc]   free() */
-                { .pid = 300, .ip = 0x50000 + 800, },
+                { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_FREE, },
         },
         {
                 /* perf [libc]   free() */
-                { .pid = 200, .ip = 0x50000 + 800, },
+                { .pid = FAKE_PID_PERF2, .ip = FAKE_IP_LIBC_FREE, },
                 /* bash [libc]   malloc() */
-                { .pid = 300, .ip = 0x50000 + 700, }, /* will be merged */
+                { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_MALLOC, }, /* will be merged */
                 /* bash [bash]   xfee() */
-                { .pid = 300, .ip = 0x40000 + 900, },
+                { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XFREE, },
                 /* bash [libc]   realloc() */
-                { .pid = 300, .ip = 0x50000 + 900, },
+                { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_LIBC_REALLOC, },
                 /* bash [kernel] page_fault() */
-                { .pid = 300, .ip = 0xf0000 + 800, },
+                { .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
         },
 };
 
@@ -201,7 +64,7 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine)
         struct perf_evsel *evsel;
         struct addr_location al;
         struct hist_entry *he;
-        struct perf_sample sample = { .cpu = 0, };
+        struct perf_sample sample = { .period = 1, };
         size_t i = 0, k;
 
         /*
@@ -218,13 +81,14 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine)
                         };
 
                         sample.pid = fake_common_samples[k].pid;
+                        sample.tid = fake_common_samples[k].pid;
                         sample.ip = fake_common_samples[k].ip;
                         if (perf_event__preprocess_sample(&event, machine, &al,
                                                           &sample) < 0)
                                 goto out;
 
                         he = __hists__add_entry(&evsel->hists, &al, NULL,
-                                                NULL, NULL, 1, 1, 0);
+                                                NULL, NULL, 1, 1, 0, true);
                         if (he == NULL)
                                 goto out;
 
@@ -241,13 +105,14 @@ static int add_hist_entries(struct perf_evlist *evlist, struct machine *machine)
                         };
 
                         sample.pid = fake_samples[i][k].pid;
+                        sample.tid = fake_samples[i][k].pid;
                         sample.ip = fake_samples[i][k].ip;
                         if (perf_event__preprocess_sample(&event, machine, &al,
                                                           &sample) < 0)
                                 goto out;
 
                         he = __hists__add_entry(&evsel->hists, &al, NULL,
-                                                NULL, NULL, 1, 1, 0);
+                                                NULL, NULL, 1, 1, 0, true);
                         if (he == NULL)
                                 goto out;
 
@@ -403,33 +268,6 @@ static int validate_link(struct hists *leader, struct hists *other)
         return __validate_link(leader, 0) || __validate_link(other, 1);
 }
 
-static void print_hists(struct hists *hists)
-{
-        int i = 0;
-        struct rb_root *root;
-        struct rb_node *node;
-
-        if (sort__need_collapse)
-                root = &hists->entries_collapsed;
-        else
-                root = hists->entries_in;
-
-        pr_info("----- %s --------\n", __func__);
-        node = rb_first(root);
-        while (node) {
-                struct hist_entry *he;
-
-                he = rb_entry(node, struct hist_entry, rb_node_in);
-
-                pr_info("%2d: entry: %-8s [%-8s] %20s: period = %"PRIu64"\n",
-                        i, thread__comm_str(he->thread), he->ms.map->dso->short_name,
-                        he->ms.sym->name, he->stat.period);
-
-                i++;
-                node = rb_next(node);
-        }
-}
-
 int test__hists_link(void)
 {
         int err = -1;
@@ -471,7 +309,7 @@ int test__hists_link(void)
                 hists__collapse_resort(&evsel->hists, NULL);
 
                 if (verbose > 2)
-                        print_hists(&evsel->hists);
+                        print_hists_in(&evsel->hists);
         }
 
         first = perf_evlist__first(evlist);
@@ -494,6 +332,7 @@ int test__hists_link(void)
 out:
         /* tear down everything */
         perf_evlist__delete(evlist);
+        reset_output_field();
         machines__exit(&machines);
 
         return err;
diff --git a/tools/perf/tests/hists_output.c b/tools/perf/tests/hists_output.c
new file mode 100644
index 000000000000..e3bbd6c54c1b
--- /dev/null
+++ b/tools/perf/tests/hists_output.c
@@ -0,0 +1,621 @@
+#include "perf.h"
+#include "util/debug.h"
+#include "util/symbol.h"
+#include "util/sort.h"
+#include "util/evsel.h"
+#include "util/evlist.h"
+#include "util/machine.h"
+#include "util/thread.h"
+#include "util/parse-events.h"
+#include "tests/tests.h"
+#include "tests/hists_common.h"
+
+struct sample {
+        u32 cpu;
+        u32 pid;
+        u64 ip;
+        struct thread *thread;
+        struct map *map;
+        struct symbol *sym;
+};
+
+/* For the numbers, see hists_common.c */
+static struct sample fake_samples[] = {
+        /* perf [kernel] schedule() */
+        { .cpu = 0, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_KERNEL_SCHEDULE, },
+        /* perf [perf]   main() */
+        { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_MAIN, },
+        /* perf [perf]   cmd_record() */
+        { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_PERF_CMD_RECORD, },
+        /* perf [libc]   malloc() */
+        { .cpu = 1, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_MALLOC, },
+        /* perf [libc]   free() */
+        { .cpu = 2, .pid = FAKE_PID_PERF1, .ip = FAKE_IP_LIBC_FREE, },
+        /* perf [perf]   main() */
+        { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_PERF_MAIN, },
+        /* perf [kernel] page_fault() */
+        { .cpu = 2, .pid = FAKE_PID_PERF2, .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+        /* bash [bash]   main() */
+        { .cpu = 3, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_MAIN, },
+        /* bash [bash]   xmalloc() */
+        { .cpu = 0, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_BASH_XMALLOC, },
+        /* bash [kernel] page_fault() */
+        { .cpu = 1, .pid = FAKE_PID_BASH,  .ip = FAKE_IP_KERNEL_PAGE_FAULT, },
+};
+
+static int add_hist_entries(struct hists *hists, struct machine *machine)
+{
+        struct addr_location al;
+        struct perf_evsel *evsel = hists_to_evsel(hists);
+        struct perf_sample sample = { .period = 100, };
+        size_t i;
+
+        for (i = 0; i < ARRAY_SIZE(fake_samples); i++) {
+                const union perf_event event = {
+                        .header = {
+                                .misc = PERF_RECORD_MISC_USER,
+                        },
+                };
+                struct hist_entry_iter iter = {
+                        .ops = &hist_iter_normal,
+                        .hide_unresolved = false,
+                };
+
+                sample.cpu = fake_samples[i].cpu;
+                sample.pid = fake_samples[i].pid;
+                sample.tid = fake_samples[i].pid;
+                sample.ip = fake_samples[i].ip;
+
+                if (perf_event__preprocess_sample(&event, machine, &al,
+                                                  &sample) < 0)
+                        goto out;
+
+                if (hist_entry_iter__add(&iter, &al, evsel, &sample,
+                                         PERF_MAX_STACK_DEPTH, NULL) < 0)
+                        goto out;
+
+                fake_samples[i].thread = al.thread;
+                fake_samples[i].map = al.map;
+                fake_samples[i].sym = al.sym;
+        }
+
+        return TEST_OK;
+
+out:
+        pr_debug("Not enough memory for adding a hist entry\n");
+        return TEST_FAIL;
+}
+
+static void del_hist_entries(struct hists *hists)
+{
+        struct hist_entry *he;
+        struct rb_root *root_in;
+        struct rb_root *root_out;
+        struct rb_node *node;
+
+        if (sort__need_collapse)
+                root_in = &hists->entries_collapsed;
+        else
+                root_in = hists->entries_in;
+
+        root_out = &hists->entries;
+
+        while (!RB_EMPTY_ROOT(root_out)) {
+                node = rb_first(root_out);
+
+                he = rb_entry(node, struct hist_entry, rb_node);
+                rb_erase(node, root_out);
+                rb_erase(&he->rb_node_in, root_in);
+                hist_entry__free(he);
+        }
+}
+
+typedef int (*test_fn_t)(struct perf_evsel *, struct machine *);
+
+#define COMM(he)  (thread__comm_str(he->thread))
+#define DSO(he)   (he->ms.map->dso->short_name)
+#define SYM(he)   (he->ms.sym->name)
+#define CPU(he)   (he->cpu)
+#define PID(he)   (he->thread->tid)
+
+/* default sort keys (no field) */
+static int test1(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        struct hist_entry *he;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        field_order = NULL;
+        sort_order = NULL; /* equivalent to sort_order = "comm,dso,sym" */
+
+        setup_sorting();
+
+        /*
+         * expected output:
+         *
+         * Overhead  Command  Shared Object          Symbol
+         * ========  =======  =============  ==============
+         *   20.00%     perf  perf           [.] main
+         *   10.00%     bash  [kernel]       [k] page_fault
+         *   10.00%     bash  bash           [.] main
+         *   10.00%     bash  bash           [.] xmalloc
+         *   10.00%     perf  [kernel]       [k] page_fault
+         *   10.00%     perf  [kernel]       [k] schedule
+         *   10.00%     perf  libc           [.] free
+         *   10.00%     perf  libc           [.] malloc
+         *   10.00%     perf  perf           [.] cmd_record
+         */
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        hists__collapse_resort(hists, NULL);
+        hists__output_resort(hists);
+
+        if (verbose > 2) {
+                pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
+                print_hists_out(hists);
+        }
+
+        root = &evsel->hists.entries;
+        node = rb_first(root);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
+                        !strcmp(SYM(he), "main") && he->stat.period == 200);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
+                        !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
+                        !strcmp(SYM(he), "main") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
+                        !strcmp(SYM(he), "xmalloc") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
+                        !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
+                        !strcmp(SYM(he), "schedule") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
+                        !strcmp(SYM(he), "free") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
+                        !strcmp(SYM(he), "malloc") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
+                        !strcmp(SYM(he), "cmd_record") && he->stat.period == 100);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* mixed fields and sort keys */
+static int test2(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        struct hist_entry *he;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        field_order = "overhead,cpu";
+        sort_order = "pid";
+
+        setup_sorting();
+
+        /*
+         * expected output:
+         *
+         * Overhead  CPU  Command:  Pid
+         * ========  ===  =============
+         *   30.00%    1  perf   :  100
+         *   10.00%    0  perf   :  100
+         *   10.00%    2  perf   :  100
+         *   20.00%    2  perf   :  200
+         *   10.00%    0  bash   :  300
+         *   10.00%    1  bash   :  300
+         *   10.00%    3  bash   :  300
+         */
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        hists__collapse_resort(hists, NULL);
+        hists__output_resort(hists);
+
+        if (verbose > 2) {
+                pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
+                print_hists_out(hists);
+        }
+
+        root = &evsel->hists.entries;
+        node = rb_first(root);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 1 && PID(he) == 100 && he->stat.period == 300);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 0 && PID(he) == 100 && he->stat.period == 100);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* fields only (no sort key) */
+static int test3(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        struct hist_entry *he;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        field_order = "comm,overhead,dso";
+        sort_order = NULL;
+
+        setup_sorting();
+
+        /*
+         * expected output:
+         *
+         * Command  Overhead  Shared Object
+         * =======  ========  =============
+         *    bash    20.00%  bash
+         *    bash    10.00%  [kernel]
+         *    perf    30.00%  perf
+         *    perf    20.00%  [kernel]
+         *    perf    20.00%  libc
+         */
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        hists__collapse_resort(hists, NULL);
+        hists__output_resort(hists);
+
+        if (verbose > 2) {
+                pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
+                print_hists_out(hists);
+        }
+
+        root = &evsel->hists.entries;
+        node = rb_first(root);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
+                        he->stat.period == 200);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
+                        he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
+                        he->stat.period == 300);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
+                        he->stat.period == 200);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
+                        he->stat.period == 200);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* handle duplicate 'dso' field */
+static int test4(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        struct hist_entry *he;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        field_order = "dso,sym,comm,overhead,dso";
+        sort_order = "sym";
+
+        setup_sorting();
+
+        /*
+         * expected output:
+         *
+         * Shared Object          Symbol  Command  Overhead
+         * =============  ==============  =======  ========
+         *          perf  [.] cmd_record     perf    10.00%
+         *          libc  [.] free           perf    10.00%
+         *          bash  [.] main           bash    10.00%
+         *          perf  [.] main           perf    20.00%
+         *          libc  [.] malloc         perf    10.00%
+         *      [kernel]  [k] page_fault     bash    10.00%
+         *      [kernel]  [k] page_fault     perf    10.00%
+         *      [kernel]  [k] schedule       perf    10.00%
+         *          bash  [.] xmalloc        bash    10.00%
+         */
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        hists__collapse_resort(hists, NULL);
+        hists__output_resort(hists);
+
+        if (verbose > 2) {
+                pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
+                print_hists_out(hists);
+        }
+
+        root = &evsel->hists.entries;
+        node = rb_first(root);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "cmd_record") &&
+                        !strcmp(COMM(he), "perf") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "free") &&
+                        !strcmp(COMM(he), "perf") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "main") &&
+                        !strcmp(COMM(he), "bash") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "perf") && !strcmp(SYM(he), "main") &&
+                        !strcmp(COMM(he), "perf") && he->stat.period == 200);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "libc") && !strcmp(SYM(he), "malloc") &&
+                        !strcmp(COMM(he), "perf") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") &&
+                        !strcmp(COMM(he), "bash") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "page_fault") &&
+                        !strcmp(COMM(he), "perf") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "[kernel]") && !strcmp(SYM(he), "schedule") &&
+                        !strcmp(COMM(he), "perf") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        !strcmp(DSO(he), "bash") && !strcmp(SYM(he), "xmalloc") &&
+                        !strcmp(COMM(he), "bash") && he->stat.period == 100);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+/* full sort keys w/o overhead field */
+static int test5(struct perf_evsel *evsel, struct machine *machine)
+{
+        int err;
+        struct hists *hists = &evsel->hists;
+        struct hist_entry *he;
+        struct rb_root *root;
+        struct rb_node *node;
+
+        field_order = "cpu,pid,comm,dso,sym";
+        sort_order = "dso,pid";
+
+        setup_sorting();
+
+        /*
+         * expected output:
+         *
+         * CPU  Command:  Pid  Command  Shared Object          Symbol
+         * ===  =============  =======  =============  ==============
+         *   0     perf:  100     perf       [kernel]  [k] schedule
+         *   2     perf:  200     perf       [kernel]  [k] page_fault
+         *   1     bash:  300     bash       [kernel]  [k] page_fault
+         *   0     bash:  300     bash           bash  [.] xmalloc
+         *   3     bash:  300     bash           bash  [.] main
+         *   1     perf:  100     perf           libc  [.] malloc
+         *   2     perf:  100     perf           libc  [.] free
+         *   1     perf:  100     perf           perf  [.] cmd_record
+         *   1     perf:  100     perf           perf  [.] main
+         *   2     perf:  200     perf           perf  [.] main
+         */
+        err = add_hist_entries(hists, machine);
+        if (err < 0)
+                goto out;
+
+        hists__collapse_resort(hists, NULL);
+        hists__output_resort(hists);
+
+        if (verbose > 2) {
+                pr_info("[fields = %s, sort = %s]\n", field_order, sort_order);
+                print_hists_out(hists);
+        }
+
+        root = &evsel->hists.entries;
+        node = rb_first(root);
+        he = rb_entry(node, struct hist_entry, rb_node);
+
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 0 && PID(he) == 100 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
+                        !strcmp(SYM(he), "schedule") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 2 && PID(he) == 200 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "[kernel]") &&
+                        !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 1 && PID(he) == 300 &&
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "[kernel]") &&
+                        !strcmp(SYM(he), "page_fault") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 0 && PID(he) == 300 &&
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
+                        !strcmp(SYM(he), "xmalloc") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 3 && PID(he) == 300 &&
+                        !strcmp(COMM(he), "bash") && !strcmp(DSO(he), "bash") &&
+                        !strcmp(SYM(he), "main") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 1 && PID(he) == 100 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
+                        !strcmp(SYM(he), "malloc") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 2 && PID(he) == 100 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "libc") &&
+                        !strcmp(SYM(he), "free") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 1 && PID(he) == 100 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
+                        !strcmp(SYM(he), "cmd_record") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 1 && PID(he) == 100 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
+                        !strcmp(SYM(he), "main") && he->stat.period == 100);
+
+        node = rb_next(node);
+        he = rb_entry(node, struct hist_entry, rb_node);
+        TEST_ASSERT_VAL("Invalid hist entry",
+                        CPU(he) == 2 && PID(he) == 200 &&
+                        !strcmp(COMM(he), "perf") && !strcmp(DSO(he), "perf") &&
+                        !strcmp(SYM(he), "main") && he->stat.period == 100);
+
+out:
+        del_hist_entries(hists);
+        reset_output_field();
+        return err;
+}
+
+int test__hists_output(void)
+{
+        int err = TEST_FAIL;
+        struct machines machines;
+        struct machine *machine;
+        struct perf_evsel *evsel;
+        struct perf_evlist *evlist = perf_evlist__new();
+        size_t i;
+        test_fn_t testcases[] = {
+                test1,
+                test2,
+                test3,
+                test4,
+                test5,
+        };
+
+        TEST_ASSERT_VAL("No memory", evlist);
+
+        err = parse_events(evlist, "cpu-clock");
+        if (err)
+                goto out;
+
+        machines__init(&machines);
+
+        /* setup threads/dso/map/symbols also */
+        machine = setup_fake_machine(&machines);
+        if (!machine)
+                goto out;
+
+        if (verbose > 1)
+                machine__fprintf(machine, stderr);
+
+        evsel = perf_evlist__first(evlist);
+
+        for (i = 0; i < ARRAY_SIZE(testcases); i++) {
+                err = testcases[i](evsel, machine);
+                if (err < 0)
+                        break;
+        }
+
+out:
+        /* tear down everything */
+        perf_evlist__delete(evlist);
+        machines__exit(&machines);
+
+        return err;
+}
diff --git a/tools/perf/tests/keep-tracking.c b/tools/perf/tests/keep-tracking.c
index 497957f269d8..7a5ab7b0b8f6 100644
--- a/tools/perf/tests/keep-tracking.c
+++ b/tools/perf/tests/keep-tracking.c
@@ -1,4 +1,4 @@
-#include <sys/types.h>
+#include <linux/types.h>
 #include <unistd.h>
 #include <sys/prctl.h>
 
diff --git a/tools/perf/tests/mmap-thread-lookup.c b/tools/perf/tests/mmap-thread-lookup.c
new file mode 100644
index 000000000000..4a456fef66ca
--- /dev/null
+++ b/tools/perf/tests/mmap-thread-lookup.c
@@ -0,0 +1,233 @@
+#include <unistd.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include "debug.h"
+#include "tests.h"
+#include "machine.h"
+#include "thread_map.h"
+#include "symbol.h"
+#include "thread.h"
+
+#define THREADS 4
+
+static int go_away;
+
+struct thread_data {
+        pthread_t       pt;
+        pid_t           tid;
+        void            *map;
+        int             ready[2];
+};
+
+static struct thread_data threads[THREADS];
+
+static int thread_init(struct thread_data *td)
+{
+        void *map;
+
+        map = mmap(NULL, page_size,
+                   PROT_READ|PROT_WRITE|PROT_EXEC,
+                   MAP_SHARED|MAP_ANONYMOUS, -1, 0);
+
+        if (map == MAP_FAILED) {
+                perror("mmap failed");
+                return -1;
+        }
+
+        td->map = map;
+        td->tid = syscall(SYS_gettid);
+
+        pr_debug("tid = %d, map = %p\n", td->tid, map);
+        return 0;
+}
+
+static void *thread_fn(void *arg)
+{
+        struct thread_data *td = arg;
+        ssize_t ret;
+        int go;
+
+        if (thread_init(td))
+                return NULL;
+
+        /* Signal thread_create thread is initialized. */
+        ret = write(td->ready[1], &go, sizeof(int));
+        if (ret != sizeof(int)) {
+                pr_err("failed to notify\n");
+                return NULL;
+        }
+
+        while (!go_away) {
+                /* Waiting for main thread to kill us. */
+                usleep(100);
+        }
+
+        munmap(td->map, page_size);
+        return NULL;
+}
+
+static int thread_create(int i)
+{
+        struct thread_data *td = &threads[i];
+        int err, go;
+
+        if (pipe(td->ready))
+                return -1;
+
+        err = pthread_create(&td->pt, NULL, thread_fn, td);
+        if (!err) {
+                /* Wait for thread initialization. */
+                ssize_t ret = read(td->ready[0], &go, sizeof(int));
+                err = ret != sizeof(int);
+        }
+
+        close(td->ready[0]);
+        close(td->ready[1]);
+        return err;
+}
+
+static int threads_create(void)
+{
+        struct thread_data *td0 = &threads[0];
+        int i, err = 0;
+
+        go_away = 0;
+
+        /* 0 is main thread */
+        if (thread_init(td0))
+                return -1;
+
+        for (i = 1; !err && i < THREADS; i++)
+                err = thread_create(i);
+
+        return err;
+}
+
+static int threads_destroy(void)
+{
+        struct thread_data *td0 = &threads[0];
+        int i, err = 0;
+
+        /* cleanup the main thread */
+        munmap(td0->map, page_size);
+
+        go_away = 1;
+
+        for (i = 1; !err && i < THREADS; i++)
+                err = pthread_join(threads[i].pt, NULL);
+
+        return err;
+}
+
+typedef int (*synth_cb)(struct machine *machine);
+
+static int synth_all(struct machine *machine)
+{
+        return perf_event__synthesize_threads(NULL,
+                                              perf_event__process,
+                                              machine, 0);
+}
+
+static int synth_process(struct machine *machine)
+{
+        struct thread_map *map;
+        int err;
+
+        map = thread_map__new_by_pid(getpid());
+
+        err = perf_event__synthesize_thread_map(NULL, map,
+                                                perf_event__process,
+                                                machine, 0);
+
+        thread_map__delete(map);
+        return err;
+}
+
+static int mmap_events(synth_cb synth)
+{
+        struct machines machines;
+        struct machine *machine;
+        int err, i;
+
+        /*
+         * The threads_create will not return before all threads
+         * are spawned and all created memory map.
+         *
+         * They will loop until threads_destroy is called, so we
+         * can safely run synthesizing function.
+         */
+        TEST_ASSERT_VAL("failed to create threads", !threads_create());
+
+        machines__init(&machines);
+        machine = &machines.host;
+
+        dump_trace = verbose > 1 ? 1 : 0;
+
+        err = synth(machine);
+
+        dump_trace = 0;
+
+        TEST_ASSERT_VAL("failed to destroy threads", !threads_destroy());
+        TEST_ASSERT_VAL("failed to synthesize maps", !err);
+
+        /*
+         * All data is synthesized, try to find map for each
+         * thread object.
+         */
+        for (i = 0; i < THREADS; i++) {
+                struct thread_data *td = &threads[i];
+                struct addr_location al;
+                struct thread *thread;
+
+                thread = machine__findnew_thread(machine, getpid(), td->tid);
+
+                pr_debug("looking for map %p\n", td->map);
+
+                thread__find_addr_map(thread, machine,
+                                      PERF_RECORD_MISC_USER, MAP__FUNCTION,
+                                      (unsigned long) (td->map + 1), &al);
+
+                if (!al.map) {
+                        pr_debug("failed, couldn't find map\n");
+                        err = -1;
+                        break;
+                }
+
+                pr_debug("map %p, addr %" PRIx64 "\n", al.map, al.map->start);
+        }
+
+        machine__delete_threads(machine);
+        machines__exit(&machines);
+        return err;
+}
+
+/*
+ * This test creates 'THREADS' number of threads (including
+ * main thread) and each thread creates memory map.
+ *
+ * When threads are created, we synthesize them with both
+ * (separate tests):
+ *   perf_event__synthesize_thread_map (process based)
+ *   perf_event__synthesize_threads    (global)
+ *
+ * We test we can find all memory maps via:
+ *   thread__find_addr_map
+ *
+ * by using all thread objects.
+ */
+int test__mmap_thread_lookup(void)
+{
+        /* perf_event__synthesize_threads synthesize */
+        TEST_ASSERT_VAL("failed with sythesizing all",
+                        !mmap_events(synth_all));
+
+        /* perf_event__synthesize_thread_map synthesize */
+        TEST_ASSERT_VAL("failed with sythesizing process",
+                        !mmap_events(synth_process));
+
+        return 0;
+}
diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index 8605ff5572ae..deba66955f8c 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -1174,188 +1174,240 @@ static int test__all_tracepoints(struct perf_evlist *evlist)
 struct evlist_test {
         const char *name;
         __u32 type;
+        const int id;
         int (*check)(struct perf_evlist *evlist);
 };
 
 static struct evlist_test test__events[] = {
-        [0] = {
+        {
                 .name  = "syscalls:sys_enter_open",
                 .check = test__checkevent_tracepoint,
+                .id    = 0,
         },
-        [1] = {
+        {
                 .name  = "syscalls:*",
                 .check = test__checkevent_tracepoint_multi,
+                .id    = 1,
         },
-        [2] = {
+        {
                 .name  = "r1a",
                 .check = test__checkevent_raw,
+                .id    = 2,
         },
-        [3] = {
+        {
                 .name  = "1:1",
                 .check = test__checkevent_numeric,
+                .id    = 3,
         },
-        [4] = {
+        {
                 .name  = "instructions",
                 .check = test__checkevent_symbolic_name,
+                .id    = 4,
         },
-        [5] = {
+        {
                 .name  = "cycles/period=100000,config2/",
                 .check = test__checkevent_symbolic_name_config,
+                .id    = 5,
         },
-        [6] = {
+        {
                 .name  = "faults",
                 .check = test__checkevent_symbolic_alias,
+                .id    = 6,
         },
-        [7] = {
+        {
                 .name  = "L1-dcache-load-miss",
                 .check = test__checkevent_genhw,
+                .id    = 7,
         },
-        [8] = {
+        {
                 .name  = "mem:0",
                 .check = test__checkevent_breakpoint,
+                .id    = 8,
         },
-        [9] = {
+        {
                 .name  = "mem:0:x",
                 .check = test__checkevent_breakpoint_x,
+                .id    = 9,
         },
-        [10] = {
+        {
                 .name  = "mem:0:r",
                 .check = test__checkevent_breakpoint_r,
+                .id    = 10,
         },
-        [11] = {
+        {
                 .name  = "mem:0:w",
                 .check = test__checkevent_breakpoint_w,
+                .id    = 11,
         },
-        [12] = {
+        {
                 .name  = "syscalls:sys_enter_open:k",
                 .check = test__checkevent_tracepoint_modifier,
+                .id    = 12,
         },
-        [13] = {
+        {
                 .name  = "syscalls:*:u",
                 .check = test__checkevent_tracepoint_multi_modifier,
+                .id    = 13,
         },
-        [14] = {
+        {
                 .name  = "r1a:kp",
                 .check = test__checkevent_raw_modifier,
+                .id    = 14,
         },
-        [15] = {
+        {
                 .name  = "1:1:hp",
                 .check = test__checkevent_numeric_modifier,
+                .id    = 15,
         },
-        [16] = {
+        {
                 .name  = "instructions:h",
                 .check = test__checkevent_symbolic_name_modifier,
+                .id    = 16,
         },
-        [17] = {
+        {
                 .name  = "faults:u",
                 .check = test__checkevent_symbolic_alias_modifier,
+                .id    = 17,
         },
-        [18] = {
+        {
                 .name  = "L1-dcache-load-miss:kp",
                 .check = test__checkevent_genhw_modifier,
+                .id    = 18,
         },
-        [19] = {
+        {
                 .name  = "mem:0:u",
                 .check = test__checkevent_breakpoint_modifier,
+                .id    = 19,
         },
-        [20] = {
+        {
                 .name  = "mem:0:x:k",
                 .check = test__checkevent_breakpoint_x_modifier,
+                .id    = 20,
         },
-        [21] = {
+        {
                 .name  = "mem:0:r:hp",
                 .check = test__checkevent_breakpoint_r_modifier,
+                .id    = 21,
         },
-        [22] = {
+        {
                 .name  = "mem:0:w:up",
                 .check = test__checkevent_breakpoint_w_modifier,
+                .id    = 22,
         },
-        [23] = {
+        {
                 .name  = "r1,syscalls:sys_enter_open:k,1:1:hp",
                 .check = test__checkevent_list,
+                .id    = 23,
         },
-        [24] = {
+        {
                 .name  = "instructions:G",
                 .check = test__checkevent_exclude_host_modifier,
+                .id    = 24,
         },
-        [25] = {
+        {
                 .name  = "instructions:H",
                 .check = test__checkevent_exclude_guest_modifier,
+                .id    = 25,
         },
-        [26] = {
+        {
                 .name  = "mem:0:rw",
                 .check = test__checkevent_breakpoint_rw,
+                .id    = 26,
         },
-        [27] = {
+        {
                 .name  = "mem:0:rw:kp",
                 .check = test__checkevent_breakpoint_rw_modifier,
+                .id    = 27,
         },
-        [28] = {
+        {
                 .name  = "{instructions:k,cycles:upp}",
                 .check = test__group1,
+                .id    = 28,
         },
-        [29] = {
+        {
                 .name  = "{faults:k,cache-references}:u,cycles:k",
                 .check = test__group2,
+                .id    = 29,
         },
-        [30] = {
+        {
                 .name  = "group1{syscalls:sys_enter_open:H,cycles:kppp},group2{cycles,1:3}:G,instructions:u",
                 .check = test__group3,
+                .id    = 30,
         },
-        [31] = {
+        {
                 .name  = "{cycles:u,instructions:kp}:p",
                 .check = test__group4,
+                .id    = 31,
         },
-        [32] = {
+        {
                 .name  = "{cycles,instructions}:G,{cycles:G,instructions:G},cycles",
                 .check = test__group5,
+                .id    = 32,
         },
-        [33] = {
+        {
                 .name  = "*:*",
                 .check = test__all_tracepoints,
+                .id    = 33,
         },
-        [34] = {
+        {
                 .name  = "{cycles,cache-misses:G}:H",
                 .check = test__group_gh1,
+                .id    = 34,
         },
-        [35] = {
+        {
                 .name  = "{cycles,cache-misses:H}:G",
                 .check = test__group_gh2,
+                .id    = 35,
         },
-        [36] = {
+        {
                 .name  = "{cycles:G,cache-misses:H}:u",
                 .check = test__group_gh3,
+                .id    = 36,
         },
-        [37] = {
+        {
                 .name  = "{cycles:G,cache-misses:H}:uG",
                 .check = test__group_gh4,
+                .id    = 37,
         },
-        [38] = {
+        {
                 .name  = "{cycles,cache-misses,branch-misses}:S",
                 .check = test__leader_sample1,
+                .id    = 38,
         },
-        [39] = {
+        {
                 .name  = "{instructions,branch-misses}:Su",
                 .check = test__leader_sample2,
+                .id    = 39,
         },
-        [40] = {
+        {
                 .name  = "instructions:uDp",
                 .check = test__checkevent_pinned_modifier,
+                .id    = 40,
         },
-        [41] = {
+        {
                 .name  = "{cycles,cache-misses,branch-misses}:D",
                 .check = test__pinned_group,
+                .id    = 41,
+        },
+#if defined(__s390x__)
+        {
+                .name  = "kvm-s390:kvm_s390_create_vm",
+                .check = test__checkevent_tracepoint,
+                .id    = 100,
         },
+#endif
 };
 
 static struct evlist_test test__events_pmu[] = {
-        [0] = {
+        {
                 .name  = "cpu/config=10,config1,config2=3,period=1000/u",
                 .check = test__checkevent_pmu,
+                .id    = 0,
         },
-        [1] = {
+        {
                 .name  = "cpu/config=1,name=krava/u,cpu/config=2/u",
                 .check = test__checkevent_pmu_name,
+                .id    = 1,
         },
 };
 
@@ -1402,7 +1454,7 @@ static int test_events(struct evlist_test *events, unsigned cnt)
         for (i = 0; i < cnt; i++) {
                 struct evlist_test *e = &events[i];
 
-                pr_debug("running test %d '%s'\n", i, e->name);
+                pr_debug("running test %d '%s'\n", e->id, e->name);
                 ret1 = test_event(e);
                 if (ret1)
                         ret2 = ret1;
diff --git a/tools/perf/tests/parse-no-sample-id-all.c b/tools/perf/tests/parse-no-sample-id-all.c
index e117b6c6a248..905019f9b740 100644
--- a/tools/perf/tests/parse-no-sample-id-all.c
+++ b/tools/perf/tests/parse-no-sample-id-all.c
@@ -1,4 +1,4 @@
-#include <sys/types.h>
+#include <linux/types.h>
 #include <stddef.h>
 
 #include "tests.h"
diff --git a/tools/perf/tests/perf-time-to-tsc.c b/tools/perf/tests/perf-time-to-tsc.c
index 47146d388dbf..3b7cd4d32dcb 100644
--- a/tools/perf/tests/perf-time-to-tsc.c
+++ b/tools/perf/tests/perf-time-to-tsc.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
-#include <sys/types.h>
 #include <unistd.h>
-#include <inttypes.h>
+#include <linux/types.h>
 #include <sys/prctl.h>
 
 #include "parse-events.h"
diff --git a/tools/perf/tests/rdpmc.c b/tools/perf/tests/rdpmc.c
index 46649c25fa5e..e59143fd9e71 100644
--- a/tools/perf/tests/rdpmc.c
+++ b/tools/perf/tests/rdpmc.c
@@ -2,7 +2,7 @@
 #include <stdlib.h>
 #include <signal.h>
 #include <sys/mman.h>
-#include "types.h"
+#include <linux/types.h>
 #include "perf.h"
 #include "debug.h"
 #include "tests.h"
diff --git a/tools/perf/tests/sample-parsing.c b/tools/perf/tests/sample-parsing.c
index 0014d3c8c21c..7ae8d17db3d9 100644
--- a/tools/perf/tests/sample-parsing.c
+++ b/tools/perf/tests/sample-parsing.c
@@ -1,5 +1,5 @@
 #include <stdbool.h>
-#include <inttypes.h>
+#include <linux/types.h>
 
 #include "util.h"
 #include "event.h"
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index a24795ca002d..022bb68fd9c7 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -41,8 +41,13 @@ int test__sample_parsing(void);
 int test__keep_tracking(void);
 int test__parse_no_sample_id_all(void);
 int test__dwarf_unwind(void);
+int test__hists_filter(void);
+int test__mmap_thread_lookup(void);
+int test__thread_mg_share(void);
+int test__hists_output(void);
+int test__hists_cumulate(void);
 
-#if defined(__x86_64__) || defined(__i386__)
+#if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT
 struct thread;
 struct perf_sample;
diff --git a/tools/perf/tests/thread-mg-share.c b/tools/perf/tests/thread-mg-share.c
new file mode 100644
index 000000000000..2b2e0dbe114f
--- /dev/null
+++ b/tools/perf/tests/thread-mg-share.c
@@ -0,0 +1,90 @@
+#include "tests.h"
+#include "machine.h"
+#include "thread.h"
+#include "map.h"
+
+int test__thread_mg_share(void)
+{
+        struct machines machines;
+        struct machine *machine;
+
+        /* thread group */
+        struct thread *leader;
+        struct thread *t1, *t2, *t3;
+        struct map_groups *mg;
+
+        /* other process */
+        struct thread *other, *other_leader;
+        struct map_groups *other_mg;
+
+        /*
+         * This test create 2 processes abstractions (struct thread)
+         * with several threads and checks they properly share and
+         * maintain map groups info (struct map_groups).
+         *
+         * thread group (pid: 0, tids: 0, 1, 2, 3)
+         * other  group (pid: 4, tids: 4, 5)
+        */
+
+        machines__init(&machines);
+        machine = &machines.host;
+
+        /* create process with 4 threads */
+        leader = machine__findnew_thread(machine, 0, 0);
+        t1     = machine__findnew_thread(machine, 0, 1);
+        t2     = machine__findnew_thread(machine, 0, 2);
+        t3     = machine__findnew_thread(machine, 0, 3);
+
+        /* and create 1 separated process, without thread leader */
+        other  = machine__findnew_thread(machine, 4, 5);
+
+        TEST_ASSERT_VAL("failed to create threads",
+                        leader && t1 && t2 && t3 && other);
+
+        mg = leader->mg;
+        TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 4);
+
+        /* test the map groups pointer is shared */
+        TEST_ASSERT_VAL("map groups don't match", mg == t1->mg);
+        TEST_ASSERT_VAL("map groups don't match", mg == t2->mg);
+        TEST_ASSERT_VAL("map groups don't match", mg == t3->mg);
+
+        /*
+         * Verify the other leader was created by previous call.
+         * It should have shared map groups with no change in
+         * refcnt.
+         */
+        other_leader = machine__find_thread(machine, 4, 4);
+        TEST_ASSERT_VAL("failed to find other leader", other_leader);
+
+        other_mg = other->mg;
+        TEST_ASSERT_VAL("wrong refcnt", other_mg->refcnt == 2);
+
+        TEST_ASSERT_VAL("map groups don't match", other_mg == other_leader->mg);
+
+        /* release thread group */
+        thread__delete(leader);
+        TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 3);
+
+        thread__delete(t1);
+        TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 2);
+
+        thread__delete(t2);
+        TEST_ASSERT_VAL("wrong refcnt", mg->refcnt == 1);
+
+        thread__delete(t3);
+
+        /* release other group  */
+        thread__delete(other_leader);
+        TEST_ASSERT_VAL("wrong refcnt", other_mg->refcnt == 1);
+
+        thread__delete(other);
+
+        /*
+         * Cannot call machine__delete_threads(machine) now,
+         * because we've already released all the threads.
+         */
+
+        machines__exit(&machines);
+        return 0;
+}
diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index d11541d4d7d7..3ccf6e14f89b 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -194,7 +194,7 @@ int ui_browser__warning(struct ui_browser *browser, int timeout,
                 ui_helpline__vpush(format, args);
                 va_end(args);
         } else {
-                while ((key == ui__question_window("Warning!", text,
+                while ((key = ui__question_window("Warning!", text,
                                                    "Press any key...",
                                                    timeout)) == K_RESIZE)
                         ui_browser__handle_resize(browser);
diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
index 118cca29dd26..03d4d6295f10 100644
--- a/tools/perf/ui/browser.h
+++ b/tools/perf/ui/browser.h
@@ -1,9 +1,7 @@
 #ifndef _PERF_UI_BROWSER_H_
 #define _PERF_UI_BROWSER_H_ 1
 
-#include <stdbool.h>
-#include <sys/types.h>
-#include "../types.h"
+#include <linux/types.h>
 
 #define HE_COLORSET_TOP         50
 #define HE_COLORSET_MEDIUM      51
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 7ec871af3f6f..52c03fbbba17 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -26,13 +26,35 @@ struct hist_browser {
         int                  print_seq;
         bool                 show_dso;
         float                min_pcnt;
-        u64                  nr_pcnt_entries;
+        u64                  nr_non_filtered_entries;
+        u64                  nr_callchain_rows;
 };
 
 extern void hist_browser__init_hpp(void);
 
 static int hists__browser_title(struct hists *hists, char *bf, size_t size,
                                 const char *ev_name);
+static void hist_browser__update_nr_entries(struct hist_browser *hb);
+
+static struct rb_node *hists__filter_entries(struct rb_node *nd,
+                                             float min_pcnt);
+
+static bool hist_browser__has_filter(struct hist_browser *hb)
+{
+        return hists__has_filter(hb->hists) || hb->min_pcnt;
+}
+
+static u32 hist_browser__nr_entries(struct hist_browser *hb)
+{
+        u32 nr_entries;
+
+        if (hist_browser__has_filter(hb))
+                nr_entries = hb->nr_non_filtered_entries;
+        else
+                nr_entries = hb->hists->nr_entries;
+
+        return nr_entries + hb->nr_callchain_rows;
+}
 
 static void hist_browser__refresh_dimensions(struct hist_browser *browser)
 {
@@ -43,7 +65,14 @@ static void hist_browser__refresh_dimensions(struct hist_browser *browser)
 
 static void hist_browser__reset(struct hist_browser *browser)
 {
-        browser->b.nr_entries = browser->hists->nr_entries;
+        /*
+         * The hists__remove_entry_filter() already folds non-filtered
+         * entries so we can assume it has 0 callchain rows.
+         */
+        browser->nr_callchain_rows = 0;
+
+        hist_browser__update_nr_entries(browser);
+        browser->b.nr_entries = hist_browser__nr_entries(browser);
         hist_browser__refresh_dimensions(browser);
         ui_browser__reset_index(&browser->b);
 }
@@ -198,14 +227,16 @@ static bool hist_browser__toggle_fold(struct hist_browser *browser)
                 struct hist_entry *he = browser->he_selection;
 
                 hist_entry__init_have_children(he);
-                browser->hists->nr_entries -= he->nr_rows;
+                browser->b.nr_entries -= he->nr_rows;
+                browser->nr_callchain_rows -= he->nr_rows;
 
                 if (he->ms.unfolded)
                         he->nr_rows = callchain__count_rows(&he->sorted_chain);
                 else
                         he->nr_rows = 0;
-                browser->hists->nr_entries += he->nr_rows;
-                browser->b.nr_entries = browser->hists->nr_entries;
+
+                browser->b.nr_entries += he->nr_rows;
+                browser->nr_callchain_rows += he->nr_rows;
 
                 return true;
         }
@@ -280,23 +311,27 @@ static void hist_entry__set_folding(struct hist_entry *he, bool unfold)
                 he->nr_rows = 0;
 }
 
-static void hists__set_folding(struct hists *hists, bool unfold)
+static void
+__hist_browser__set_folding(struct hist_browser *browser, bool unfold)
 {
         struct rb_node *nd;
+        struct hists *hists = browser->hists;
 
-        hists->nr_entries = 0;
-
-        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
+        for (nd = rb_first(&hists->entries);
+             (nd = hists__filter_entries(nd, browser->min_pcnt)) != NULL;
+             nd = rb_next(nd)) {
                 struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
                 hist_entry__set_folding(he, unfold);
-                hists->nr_entries += 1 + he->nr_rows;
+                browser->nr_callchain_rows += he->nr_rows;
         }
 }
 
 static void hist_browser__set_folding(struct hist_browser *browser, bool unfold)
 {
-        hists__set_folding(browser->hists, unfold);
-        browser->b.nr_entries = browser->hists->nr_entries;
+        browser->nr_callchain_rows = 0;
+        __hist_browser__set_folding(browser, unfold);
+
+        browser->b.nr_entries = hist_browser__nr_entries(browser);
         /* Go to the start, we may be way after valid entries after a collapse */
         ui_browser__reset_index(&browser->b);
 }
@@ -310,8 +345,6 @@ static void ui_browser__warn_lost_events(struct ui_browser *browser)
                 "Or reduce the sampling frequency.");
 }
 
-static void hist_browser__update_pcnt_entries(struct hist_browser *hb);
-
 static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
                              struct hist_browser_timer *hbt)
 {
@@ -320,9 +353,7 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
         int delay_secs = hbt ? hbt->refresh : 0;
 
         browser->b.entries = &browser->hists->entries;
-        browser->b.nr_entries = browser->hists->nr_entries;
-        if (browser->min_pcnt)
-                browser->b.nr_entries = browser->nr_pcnt_entries;
+        browser->b.nr_entries = hist_browser__nr_entries(browser);
 
         hist_browser__refresh_dimensions(browser);
         hists__browser_title(browser->hists, title, sizeof(title), ev_name);
@@ -339,13 +370,10 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
                         u64 nr_entries;
                         hbt->timer(hbt->arg);
 
-                        if (browser->min_pcnt) {
-                                hist_browser__update_pcnt_entries(browser);
-                                nr_entries = browser->nr_pcnt_entries;
-                        } else {
-                                nr_entries = browser->hists->nr_entries;
-                        }
+                        if (hist_browser__has_filter(browser))
+                                hist_browser__update_nr_entries(browser);
 
+                        nr_entries = hist_browser__nr_entries(browser);
                         ui_browser__update_nr_entries(&browser->b, nr_entries);
 
                         if (browser->hists->stats.nr_lost_warned !=
@@ -587,35 +615,6 @@ struct hpp_arg {
         bool current_entry;
 };
 
-static int __hpp__overhead_callback(struct perf_hpp *hpp, bool front)
-{
-        struct hpp_arg *arg = hpp->ptr;
-
-        if (arg->current_entry && arg->b->navkeypressed)
-                ui_browser__set_color(arg->b, HE_COLORSET_SELECTED);
-        else
-                ui_browser__set_color(arg->b, HE_COLORSET_NORMAL);
-
-        if (front) {
-                if (!symbol_conf.use_callchain)
-                        return 0;
-
-                slsmg_printf("%c ", arg->folded_sign);
-                return 2;
-        }
-
-        return 0;
-}
-
-static int __hpp__color_callback(struct perf_hpp *hpp, bool front __maybe_unused)
-{
-        struct hpp_arg *arg = hpp->ptr;
-
-        if (!arg->current_entry || !arg->b->navkeypressed)
-                ui_browser__set_color(arg->b, HE_COLORSET_NORMAL);
-        return 0;
-}
-
 static int __hpp__slsmg_color_printf(struct perf_hpp *hpp, const char *fmt, ...)
 {
         struct hpp_arg *arg = hpp->ptr;
@@ -636,7 +635,7 @@ static int __hpp__slsmg_color_printf(struct perf_hpp *hpp, const char *fmt, ...)
         return ret;
 }
 
-#define __HPP_COLOR_PERCENT_FN(_type, _field, _cb)                      \
+#define __HPP_COLOR_PERCENT_FN(_type, _field)                           \
 static u64 __hpp_get_##_field(struct hist_entry *he)                    \
 {                                                                       \
         return he->stat._field;                                         \
@@ -647,22 +646,43 @@ hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,\
                                 struct perf_hpp *hpp,                   \
                                 struct hist_entry *he)                  \
 {                                                                       \
-        return __hpp__fmt(hpp, he, __hpp_get_##_field, _cb, " %6.2f%%", \
+        return __hpp__fmt(hpp, he, __hpp_get_##_field, " %6.2f%%",      \
                           __hpp__slsmg_color_printf, true);             \
 }
 
-__HPP_COLOR_PERCENT_FN(overhead, period, __hpp__overhead_callback)
-__HPP_COLOR_PERCENT_FN(overhead_sys, period_sys, __hpp__color_callback)
-__HPP_COLOR_PERCENT_FN(overhead_us, period_us, __hpp__color_callback)
-__HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys, __hpp__color_callback)
-__HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us, __hpp__color_callback)
+#define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)                       \
+static u64 __hpp_get_acc_##_field(struct hist_entry *he)                \
+{                                                                       \
+        return he->stat_acc->_field;                                    \
+}                                                                       \
+                                                                        \
+static int                                                              \
+hist_browser__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,\
+                                struct perf_hpp *hpp,                   \
+                                struct hist_entry *he)                  \
+{                                                                       \
+        if (!symbol_conf.cumulate_callchain) {                          \
+                int ret = scnprintf(hpp->buf, hpp->size, "%8s", "N/A"); \
+                slsmg_printf("%s", hpp->buf);                           \
+                                                                        \
+                return ret;                                             \
+        }                                                               \
+        return __hpp__fmt(hpp, he, __hpp_get_acc_##_field, " %6.2f%%",  \
+                          __hpp__slsmg_color_printf, true);             \
+}
+
+__HPP_COLOR_PERCENT_FN(overhead, period)
+__HPP_COLOR_PERCENT_FN(overhead_sys, period_sys)
+__HPP_COLOR_PERCENT_FN(overhead_us, period_us)
+__HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys)
+__HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us)
+__HPP_COLOR_ACC_PERCENT_FN(overhead_acc, period)
 
 #undef __HPP_COLOR_PERCENT_FN
+#undef __HPP_COLOR_ACC_PERCENT_FN
 
 void hist_browser__init_hpp(void)
 {
-        perf_hpp__init();
-
         perf_hpp__format[PERF_HPP__OVERHEAD].color =
                                 hist_browser__hpp_color_overhead;
         perf_hpp__format[PERF_HPP__OVERHEAD_SYS].color =
@@ -673,6 +693,8 @@ void hist_browser__init_hpp(void)
                                 hist_browser__hpp_color_overhead_guest_sys;
         perf_hpp__format[PERF_HPP__OVERHEAD_GUEST_US].color =
                                 hist_browser__hpp_color_overhead_guest_us;
+        perf_hpp__format[PERF_HPP__OVERHEAD_ACC].color =
+                                hist_browser__hpp_color_overhead_acc;
 }
 
 static int hist_browser__show_entry(struct hist_browser *browser,
@@ -700,7 +722,7 @@ static int hist_browser__show_entry(struct hist_browser *browser,
 
         if (row_offset == 0) {
                 struct hpp_arg arg = {
-                        .b              = &browser->b,
+                        .b              = &browser->b,
                         .folded_sign    = folded_sign,
                         .current_entry  = current_entry,
                 };
@@ -713,11 +735,27 @@ static int hist_browser__show_entry(struct hist_browser *browser,
                 ui_browser__gotorc(&browser->b, row, 0);
 
                 perf_hpp__for_each_format(fmt) {
-                        if (!first) {
+                        if (perf_hpp__should_skip(fmt))
+                                continue;
+
+                        if (current_entry && browser->b.navkeypressed) {
+                                ui_browser__set_color(&browser->b,
+                                                      HE_COLORSET_SELECTED);
+                        } else {
+                                ui_browser__set_color(&browser->b,
+                                                      HE_COLORSET_NORMAL);
+                        }
+
+                        if (first) {
+                                if (symbol_conf.use_callchain) {
+                                        slsmg_printf("%c ", folded_sign);
+                                        width -= 2;
+                                }
+                                first = false;
+                        } else {
                                 slsmg_printf("  ");
                                 width -= 2;
                         }
-                        first = false;
 
                         if (fmt->color) {
                                 width -= fmt->color(fmt, &hpp, entry);
@@ -731,8 +769,8 @@ static int hist_browser__show_entry(struct hist_browser *browser,
                 if (!browser->b.navkeypressed)
                         width += 1;
 
-                hist_entry__sort_snprintf(entry, s, sizeof(s), browser->hists);
-                slsmg_write_nstring(s, width);
+                slsmg_write_nstring("", width);
+
                 ++row;
                 ++printed;
         } else
@@ -769,12 +807,12 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
 
         for (nd = browser->top; nd; nd = rb_next(nd)) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-                float percent = h->stat.period * 100.0 /
-                                        hb->hists->stats.total_period;
+                float percent;
 
                 if (h->filtered)
                         continue;
 
+                percent = hist_entry__get_percent_limit(h);
                 if (percent < hb->min_pcnt)
                         continue;
 
@@ -787,18 +825,13 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
 }
 
 static struct rb_node *hists__filter_entries(struct rb_node *nd,
-                                             struct hists *hists,
                                              float min_pcnt)
 {
         while (nd != NULL) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-                float percent = h->stat.period * 100.0 /
-                                        hists->stats.total_period;
-
-                if (percent < min_pcnt)
-                        return NULL;
+                float percent = hist_entry__get_percent_limit(h);
 
-                if (!h->filtered)
+                if (!h->filtered && percent >= min_pcnt)
                         return nd;
 
                 nd = rb_next(nd);
@@ -808,13 +841,11 @@ static struct rb_node *hists__filter_entries(struct rb_node *nd,
 }
 
 static struct rb_node *hists__filter_prev_entries(struct rb_node *nd,
-                                                  struct hists *hists,
                                                   float min_pcnt)
 {
         while (nd != NULL) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-                float percent = h->stat.period * 100.0 /
-                                        hists->stats.total_period;
+                float percent = hist_entry__get_percent_limit(h);
 
                 if (!h->filtered && percent >= min_pcnt)
                         return nd;
@@ -843,14 +874,14 @@ static void ui_browser__hists_seek(struct ui_browser *browser,
         switch (whence) {
         case SEEK_SET:
                 nd = hists__filter_entries(rb_first(browser->entries),
-                                           hb->hists, hb->min_pcnt);
+                                           hb->min_pcnt);
                 break;
         case SEEK_CUR:
                 nd = browser->top;
                 goto do_offset;
         case SEEK_END:
                 nd = hists__filter_prev_entries(rb_last(browser->entries),
-                                                hb->hists, hb->min_pcnt);
+                                                hb->min_pcnt);
                 first = false;
                 break;
         default:
@@ -893,8 +924,7 @@ do_offset:
                                         break;
                                 }
                         }
-                        nd = hists__filter_entries(rb_next(nd), hb->hists,
-                                                   hb->min_pcnt);
+                        nd = hists__filter_entries(rb_next(nd), hb->min_pcnt);
                         if (nd == NULL)
                                 break;
                         --offset;
@@ -927,7 +957,7 @@ do_offset:
                                 }
                         }
 
-                        nd = hists__filter_prev_entries(rb_prev(nd), hb->hists,
+                        nd = hists__filter_prev_entries(rb_prev(nd),
                                                         hb->min_pcnt);
                         if (nd == NULL)
                                 break;
@@ -1066,27 +1096,35 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser,
                                        struct hist_entry *he, FILE *fp)
 {
         char s[8192];
-        double percent;
         int printed = 0;
         char folded_sign = ' ';
+        struct perf_hpp hpp = {
+                .buf = s,
+                .size = sizeof(s),
+        };
+        struct perf_hpp_fmt *fmt;
+        bool first = true;
+        int ret;
 
         if (symbol_conf.use_callchain)
                 folded_sign = hist_entry__folded(he);
 
-        hist_entry__sort_snprintf(he, s, sizeof(s), browser->hists);
-        percent = (he->stat.period * 100.0) / browser->hists->stats.total_period;
-
         if (symbol_conf.use_callchain)
                 printed += fprintf(fp, "%c ", folded_sign);
 
-        printed += fprintf(fp, " %5.2f%%", percent);
-
-        if (symbol_conf.show_nr_samples)
-                printed += fprintf(fp, " %11u", he->stat.nr_events);
+        perf_hpp__for_each_format(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
 
-        if (symbol_conf.show_total_period)
-                printed += fprintf(fp, " %12" PRIu64, he->stat.period);
+                if (!first) {
+                        ret = scnprintf(hpp.buf, hpp.size, "  ");
+                        advance_hpp(&hpp, ret);
+                } else
+                        first = false;
 
+                ret = fmt->entry(fmt, &hpp, he);
+                advance_hpp(&hpp, ret);
+        }
         printed += fprintf(fp, "%s\n", rtrim(s));
 
         if (folded_sign == '-')
@@ -1098,7 +1136,6 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser,
 static int hist_browser__fprintf(struct hist_browser *browser, FILE *fp)
 {
         struct rb_node *nd = hists__filter_entries(rb_first(browser->b.entries),
-                                                   browser->hists,
                                                    browser->min_pcnt);
         int printed = 0;
 
@@ -1106,8 +1143,7 @@ static int hist_browser__fprintf(struct hist_browser *browser, FILE *fp)
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
                 printed += hist_browser__fprintf_entry(browser, h, fp);
-                nd = hists__filter_entries(rb_next(nd), browser->hists,
-                                           browser->min_pcnt);
+                nd = hists__filter_entries(rb_next(nd), browser->min_pcnt);
         }
 
         return printed;
@@ -1189,6 +1225,11 @@ static int hists__browser_title(struct hists *hists, char *bf, size_t size,
         char buf[512];
         size_t buflen = sizeof(buf);
 
+        if (symbol_conf.filter_relative) {
+                nr_samples = hists->stats.nr_non_filtered_samples;
+                nr_events = hists->stats.total_non_filtered_period;
+        }
+
         if (perf_evsel__is_group_event(evsel)) {
                 struct perf_evsel *pos;
 
@@ -1196,8 +1237,13 @@ static int hists__browser_title(struct hists *hists, char *bf, size_t size,
                 ev_name = buf;
 
                 for_each_group_member(pos, evsel) {
-                        nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
-                        nr_events += pos->hists.stats.total_period;
+                        if (symbol_conf.filter_relative) {
+                                nr_samples += pos->hists.stats.nr_non_filtered_samples;
+                                nr_events += pos->hists.stats.total_non_filtered_period;
+                        } else {
+                                nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
+                                nr_events += pos->hists.stats.total_period;
+                        }
                 }
         }
 
@@ -1324,18 +1370,22 @@ close_file_and_continue:
         return ret;
 }
 
-static void hist_browser__update_pcnt_entries(struct hist_browser *hb)
+static void hist_browser__update_nr_entries(struct hist_browser *hb)
 {
         u64 nr_entries = 0;
         struct rb_node *nd = rb_first(&hb->hists->entries);
 
-        while (nd) {
+        if (hb->min_pcnt == 0) {
+                hb->nr_non_filtered_entries = hb->hists->nr_non_filtered_entries;
+                return;
+        }
+
+        while ((nd = hists__filter_entries(nd, hb->min_pcnt)) != NULL) {
                 nr_entries++;
-                nd = hists__filter_entries(rb_next(nd), hb->hists,
-                                           hb->min_pcnt);
+                nd = rb_next(nd);
         }
 
-        hb->nr_pcnt_entries = nr_entries;
+        hb->nr_non_filtered_entries = nr_entries;
 }
 
 static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
@@ -1370,6 +1420,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
         "C             Collapse all callchains\n"                       \
         "d             Zoom into current DSO\n"                         \
         "E             Expand all callchains\n"                         \
+        "F             Toggle percentage of filtered entries\n"         \
 
         /* help messages are sorted by lexical order of the hotkey */
         const char report_help[] = HIST_BROWSER_HELP_COMMON
@@ -1391,7 +1442,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 
         if (min_pcnt) {
                 browser->min_pcnt = min_pcnt;
-                hist_browser__update_pcnt_entries(browser);
+                hist_browser__update_nr_entries(browser);
         }
 
         fstack = pstack__new(2);
@@ -1475,6 +1526,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
                         if (env->arch)
                                 tui__header_window(env);
                         continue;
+                case 'F':
+                        symbol_conf.filter_relative ^= 1;
+                        continue;
                 case K_F1:
                 case 'h':
                 case '?':
@@ -1652,14 +1706,14 @@ zoom_dso:
 zoom_out_dso:
                                 ui_helpline__pop();
                                 browser->hists->dso_filter = NULL;
-                                sort_dso.elide = false;
+                                perf_hpp__set_elide(HISTC_DSO, false);
                         } else {
                                 if (dso == NULL)
                                         continue;
                                 ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
                                                    dso->kernel ? "the Kernel" : dso->short_name);
                                 browser->hists->dso_filter = dso;
-                                sort_dso.elide = true;
+                                perf_hpp__set_elide(HISTC_DSO, true);
                                 pstack__push(fstack, &browser->hists->dso_filter);
                         }
                         hists__filter_by_dso(hists);
@@ -1671,13 +1725,13 @@ zoom_thread:
 zoom_out_thread:
                                 ui_helpline__pop();
                                 browser->hists->thread_filter = NULL;
-                                sort_thread.elide = false;
+                                perf_hpp__set_elide(HISTC_THREAD, false);
                         } else {
                                 ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
                                                    thread->comm_set ? thread__comm_str(thread) : "",
                                                    thread->tid);
                                 browser->hists->thread_filter = thread;
-                                sort_thread.elide = true;
+                                perf_hpp__set_elide(HISTC_THREAD, false);
                                 pstack__push(fstack, &browser->hists->thread_filter);
                         }
                         hists__filter_by_thread(hists);
diff --git a/tools/perf/ui/gtk/hists.c b/tools/perf/ui/gtk/hists.c
index e395ef9b0ae0..6ca60e482cdc 100644
--- a/tools/perf/ui/gtk/hists.c
+++ b/tools/perf/ui/gtk/hists.c
@@ -43,23 +43,36 @@ static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,
                                        struct perf_hpp *hpp,                    \
                                        struct hist_entry *he)                   \
 {                                                                               \
-        return __hpp__fmt(hpp, he, he_get_##_field, NULL, " %6.2f%%",           \
+        return __hpp__fmt(hpp, he, he_get_##_field, " %6.2f%%",                 \
                           __percent_color_snprintf, true);                      \
 }
 
+#define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)                               \
+static u64 he_get_acc_##_field(struct hist_entry *he)                           \
+{                                                                               \
+        return he->stat_acc->_field;                                            \
+}                                                                               \
+                                                                                \
+static int perf_gtk__hpp_color_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
+                                       struct perf_hpp *hpp,                    \
+                                       struct hist_entry *he)                   \
+{                                                                               \
+        return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %6.2f%%",         \
+                              __percent_color_snprintf, true);                  \
+}
+
 __HPP_COLOR_PERCENT_FN(overhead, period)
 __HPP_COLOR_PERCENT_FN(overhead_sys, period_sys)
 __HPP_COLOR_PERCENT_FN(overhead_us, period_us)
 __HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys)
 __HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us)
+__HPP_COLOR_ACC_PERCENT_FN(overhead_acc, period)
 
 #undef __HPP_COLOR_PERCENT_FN
 
 
 void perf_gtk__init_hpp(void)
 {
-        perf_hpp__init();
-
         perf_hpp__format[PERF_HPP__OVERHEAD].color =
                                 perf_gtk__hpp_color_overhead;
         perf_hpp__format[PERF_HPP__OVERHEAD_SYS].color =
@@ -70,6 +83,8 @@ void perf_gtk__init_hpp(void)
                                 perf_gtk__hpp_color_overhead_guest_sys;
         perf_hpp__format[PERF_HPP__OVERHEAD_GUEST_US].color =
                                 perf_gtk__hpp_color_overhead_guest_us;
+        perf_hpp__format[PERF_HPP__OVERHEAD_ACC].color =
+                                perf_gtk__hpp_color_overhead_acc;
 }
 
 static void callchain_list__sym_name(struct callchain_list *cl,
@@ -153,7 +168,6 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
         struct perf_hpp_fmt *fmt;
         GType col_types[MAX_COLUMNS];
         GtkCellRenderer *renderer;
-        struct sort_entry *se;
         GtkTreeStore *store;
         struct rb_node *nd;
         GtkWidget *view;
@@ -172,16 +186,6 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
         perf_hpp__for_each_format(fmt)
                 col_types[nr_cols++] = G_TYPE_STRING;
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                if (se->elide)
-                        continue;
-
-                if (se == &sort_sym)
-                        sym_col = nr_cols;
-
-                col_types[nr_cols++] = G_TYPE_STRING;
-        }
-
         store = gtk_tree_store_newv(nr_cols, col_types);
 
         view = gtk_tree_view_new();
@@ -191,6 +195,16 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
         col_idx = 0;
 
         perf_hpp__for_each_format(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
+
+                /*
+                 * XXX no way to determine where symcol column is..
+                 *     Just use last column for now.
+                 */
+                if (perf_hpp__is_sort_entry(fmt))
+                        sym_col = col_idx;
+
                 fmt->header(fmt, &hpp, hists_to_evsel(hists));
 
                 gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
@@ -199,16 +213,6 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
                                                             col_idx++, NULL);
         }
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                if (se->elide)
-                        continue;
-
-                gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(view),
-                                                            -1, se->se_header,
-                                                            renderer, "text",
-                                                            col_idx++, NULL);
-        }
-
         for (col_idx = 0; col_idx < nr_cols; col_idx++) {
                 GtkTreeViewColumn *column;
 
@@ -228,12 +232,13 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
         for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
                 GtkTreeIter iter;
-                float percent = h->stat.period * 100.0 /
-                                        hists->stats.total_period;
+                u64 total = hists__total_period(h->hists);
+                float percent;
 
                 if (h->filtered)
                         continue;
 
+                percent = hist_entry__get_percent_limit(h);
                 if (percent < min_pcnt)
                         continue;
 
@@ -242,6 +247,9 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
                 col_idx = 0;
 
                 perf_hpp__for_each_format(fmt) {
+                        if (perf_hpp__should_skip(fmt))
+                                continue;
+
                         if (fmt->color)
                                 fmt->color(fmt, &hpp, h);
                         else
@@ -250,23 +258,10 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
                         gtk_tree_store_set(store, &iter, col_idx++, s, -1);
                 }
 
-                list_for_each_entry(se, &hist_entry__sort_list, list) {
-                        if (se->elide)
-                                continue;
-
-                        se->se_snprintf(h, s, ARRAY_SIZE(s),
-                                        hists__col_len(hists, se->se_width_idx));
-
-                        gtk_tree_store_set(store, &iter, col_idx++, s, -1);
-                }
-
                 if (symbol_conf.use_callchain && sort__has_sym) {
-                        u64 total;
-
                         if (callchain_param.mode == CHAIN_GRAPH_REL)
-                                total = h->stat.period;
-                        else
-                                total = hists->stats.total_period;
+                                total = symbol_conf.cumulate_callchain ?
+                                        h->stat_acc->period : h->stat.period;
 
                         perf_gtk__add_callchain(&h->sorted_chain, store, &iter,
                                                 sym_col, total);
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 0f403b83e9d1..498adb23c02e 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -16,30 +16,25 @@
 })
 
 int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
-               hpp_field_fn get_field, hpp_callback_fn callback,
-               const char *fmt, hpp_snprint_fn print_fn, bool fmt_percent)
+               hpp_field_fn get_field, const char *fmt,
+               hpp_snprint_fn print_fn, bool fmt_percent)
 {
-        int ret = 0;
+        int ret;
         struct hists *hists = he->hists;
         struct perf_evsel *evsel = hists_to_evsel(hists);
         char *buf = hpp->buf;
         size_t size = hpp->size;
 
-        if (callback) {
-                ret = callback(hpp, true);
-                advance_hpp(hpp, ret);
-        }
-
         if (fmt_percent) {
                 double percent = 0.0;
+                u64 total = hists__total_period(hists);
 
-                if (hists->stats.total_period)
-                        percent = 100.0 * get_field(he) /
-                                  hists->stats.total_period;
+                if (total)
+                        percent = 100.0 * get_field(he) / total;
 
-                ret += hpp__call_print_fn(hpp, print_fn, fmt, percent);
+                ret = hpp__call_print_fn(hpp, print_fn, fmt, percent);
         } else
-                ret += hpp__call_print_fn(hpp, print_fn, fmt, get_field(he));
+                ret = hpp__call_print_fn(hpp, print_fn, fmt, get_field(he));
 
         if (perf_evsel__is_group_event(evsel)) {
                 int prev_idx, idx_delta;
@@ -50,7 +45,7 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
 
                 list_for_each_entry(pair, &he->pairs.head, pairs.node) {
                         u64 period = get_field(pair);
-                        u64 total = pair->hists->stats.total_period;
+                        u64 total = hists__total_period(pair->hists);
 
                         if (!total)
                                 continue;
@@ -99,13 +94,6 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
                 }
         }
 
-        if (callback) {
-                int __ret = callback(hpp, false);
-
-                advance_hpp(hpp, __ret);
-                ret += __ret;
-        }
-
         /*
          * Restore original buf and size as it's where caller expects
          * the result will be saved.
@@ -116,6 +104,92 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
         return ret;
 }
 
+int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he,
+                   hpp_field_fn get_field, const char *fmt,
+                   hpp_snprint_fn print_fn, bool fmt_percent)
+{
+        if (!symbol_conf.cumulate_callchain) {
+                return snprintf(hpp->buf, hpp->size, "%*s",
+                                fmt_percent ? 8 : 12, "N/A");
+        }
+
+        return __hpp__fmt(hpp, he, get_field, fmt, print_fn, fmt_percent);
+}
+
+static int field_cmp(u64 field_a, u64 field_b)
+{
+        if (field_a > field_b)
+                return 1;
+        if (field_a < field_b)
+                return -1;
+        return 0;
+}
+
+static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
+                       hpp_field_fn get_field)
+{
+        s64 ret;
+        int i, nr_members;
+        struct perf_evsel *evsel;
+        struct hist_entry *pair;
+        u64 *fields_a, *fields_b;
+
+        ret = field_cmp(get_field(a), get_field(b));
+        if (ret || !symbol_conf.event_group)
+                return ret;
+
+        evsel = hists_to_evsel(a->hists);
+        if (!perf_evsel__is_group_event(evsel))
+                return ret;
+
+        nr_members = evsel->nr_members;
+        fields_a = calloc(sizeof(*fields_a), nr_members);
+        fields_b = calloc(sizeof(*fields_b), nr_members);
+
+        if (!fields_a || !fields_b)
+                goto out;
+
+        list_for_each_entry(pair, &a->pairs.head, pairs.node) {
+                evsel = hists_to_evsel(pair->hists);
+                fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
+        }
+
+        list_for_each_entry(pair, &b->pairs.head, pairs.node) {
+                evsel = hists_to_evsel(pair->hists);
+                fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
+        }
+
+        for (i = 1; i < nr_members; i++) {
+                ret = field_cmp(fields_a[i], fields_b[i]);
+                if (ret)
+                        break;
+        }
+
+out:
+        free(fields_a);
+        free(fields_b);
+
+        return ret;
+}
+
+static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
+                           hpp_field_fn get_field)
+{
+        s64 ret = 0;
+
+        if (symbol_conf.cumulate_callchain) {
+                /*
+                 * Put caller above callee when they have equal period.
+                 */
+                ret = field_cmp(get_field(a), get_field(b));
+                if (ret)
+                        return ret;
+
+                ret = b->callchain->max_depth - a->callchain->max_depth;
+        }
+        return ret;
+}
+
 #define __HPP_HEADER_FN(_type, _str, _min_width, _unit_width)           \
 static int hpp__header_##_type(struct perf_hpp_fmt *fmt __maybe_unused, \
                                struct perf_hpp *hpp,                    \
@@ -179,7 +253,7 @@ static u64 he_get_##_field(struct hist_entry *he)				\
 static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,          \
                               struct perf_hpp *hpp, struct hist_entry *he)      \
 {                                                                               \
-        return __hpp__fmt(hpp, he, he_get_##_field, NULL, " %6.2f%%",           \
+        return __hpp__fmt(hpp, he, he_get_##_field, " %6.2f%%",                 \
                           hpp_color_scnprintf, true);                           \
 }
 
@@ -188,10 +262,44 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused,		\
                               struct perf_hpp *hpp, struct hist_entry *he)      \
 {                                                                               \
         const char *fmt = symbol_conf.field_sep ? " %.2f" : " %6.2f%%";         \
-        return __hpp__fmt(hpp, he, he_get_##_field, NULL, fmt,                  \
+        return __hpp__fmt(hpp, he, he_get_##_field, fmt,                        \
                           hpp_entry_scnprintf, true);                           \
 }
 
+#define __HPP_SORT_FN(_type, _field)                                            \
+static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)    \
+{                                                                               \
+        return __hpp__sort(a, b, he_get_##_field);                              \
+}
+
+#define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)                               \
+static u64 he_get_acc_##_field(struct hist_entry *he)                           \
+{                                                                               \
+        return he->stat_acc->_field;                                            \
+}                                                                               \
+                                                                                \
+static int hpp__color_##_type(struct perf_hpp_fmt *fmt __maybe_unused,          \
+                              struct perf_hpp *hpp, struct hist_entry *he)      \
+{                                                                               \
+        return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, " %6.2f%%",         \
+                              hpp_color_scnprintf, true);                       \
+}
+
+#define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)                               \
+static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused,         \
+                              struct perf_hpp *hpp, struct hist_entry *he)      \
+{                                                                               \
+        const char *fmt = symbol_conf.field_sep ? " %.2f" : " %6.2f%%";         \
+        return __hpp__fmt_acc(hpp, he, he_get_acc_##_field, fmt,                \
+                              hpp_entry_scnprintf, true);                       \
+}
+
+#define __HPP_SORT_ACC_FN(_type, _field)                                        \
+static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)    \
+{                                                                               \
+        return __hpp__sort_acc(a, b, he_get_acc_##_field);                      \
+}
+
 #define __HPP_ENTRY_RAW_FN(_type, _field)                                       \
 static u64 he_get_raw_##_field(struct hist_entry *he)                           \
 {                                                                               \
@@ -202,44 +310,85 @@ static int hpp__entry_##_type(struct perf_hpp_fmt *_fmt __maybe_unused,		\
                               struct perf_hpp *hpp, struct hist_entry *he)      \
 {                                                                               \
         const char *fmt = symbol_conf.field_sep ? " %"PRIu64 : " %11"PRIu64;    \
-        return __hpp__fmt(hpp, he, he_get_raw_##_field, NULL, fmt,              \
+        return __hpp__fmt(hpp, he, he_get_raw_##_field, fmt,                    \
                           hpp_entry_scnprintf, false);                          \
 }
 
+#define __HPP_SORT_RAW_FN(_type, _field)                                        \
+static int64_t hpp__sort_##_type(struct hist_entry *a, struct hist_entry *b)    \
+{                                                                               \
+        return __hpp__sort(a, b, he_get_raw_##_field);                          \
+}
+
+
 #define HPP_PERCENT_FNS(_type, _str, _field, _min_width, _unit_width)   \
 __HPP_HEADER_FN(_type, _str, _min_width, _unit_width)                   \
 __HPP_WIDTH_FN(_type, _min_width, _unit_width)                          \
 __HPP_COLOR_PERCENT_FN(_type, _field)                                   \
-__HPP_ENTRY_PERCENT_FN(_type, _field)
+__HPP_ENTRY_PERCENT_FN(_type, _field)                                   \
+__HPP_SORT_FN(_type, _field)
+
+#define HPP_PERCENT_ACC_FNS(_type, _str, _field, _min_width, _unit_width)\
+__HPP_HEADER_FN(_type, _str, _min_width, _unit_width)                   \
+__HPP_WIDTH_FN(_type, _min_width, _unit_width)                          \
+__HPP_COLOR_ACC_PERCENT_FN(_type, _field)                               \
+__HPP_ENTRY_ACC_PERCENT_FN(_type, _field)                               \
+__HPP_SORT_ACC_FN(_type, _field)
 
 #define HPP_RAW_FNS(_type, _str, _field, _min_width, _unit_width)       \
 __HPP_HEADER_FN(_type, _str, _min_width, _unit_width)                   \
 __HPP_WIDTH_FN(_type, _min_width, _unit_width)                          \
-__HPP_ENTRY_RAW_FN(_type, _field)
+__HPP_ENTRY_RAW_FN(_type, _field)                                       \
+__HPP_SORT_RAW_FN(_type, _field)
 
+__HPP_HEADER_FN(overhead_self, "Self", 8, 8)
 
 HPP_PERCENT_FNS(overhead, "Overhead", period, 8, 8)
 HPP_PERCENT_FNS(overhead_sys, "sys", period_sys, 8, 8)
 HPP_PERCENT_FNS(overhead_us, "usr", period_us, 8, 8)
 HPP_PERCENT_FNS(overhead_guest_sys, "guest sys", period_guest_sys, 9, 8)
 HPP_PERCENT_FNS(overhead_guest_us, "guest usr", period_guest_us, 9, 8)
+HPP_PERCENT_ACC_FNS(overhead_acc, "Children", period, 8, 8)
 
 HPP_RAW_FNS(samples, "Samples", nr_events, 12, 12)
 HPP_RAW_FNS(period, "Period", period, 12, 12)
 
+static int64_t hpp__nop_cmp(struct hist_entry *a __maybe_unused,
+                            struct hist_entry *b __maybe_unused)
+{
+        return 0;
+}
+
 #define HPP__COLOR_PRINT_FNS(_name)                     \
         {                                               \
                 .header = hpp__header_ ## _name,        \
                 .width  = hpp__width_ ## _name,         \
                 .color  = hpp__color_ ## _name,         \
-                .entry  = hpp__entry_ ## _name          \
+                .entry  = hpp__entry_ ## _name,         \
+                .cmp    = hpp__nop_cmp,                 \
+                .collapse = hpp__nop_cmp,               \
+                .sort   = hpp__sort_ ## _name,          \
+        }
+
+#define HPP__COLOR_ACC_PRINT_FNS(_name)                 \
+        {                                               \
+                .header = hpp__header_ ## _name,        \
+                .width  = hpp__width_ ## _name,         \
+                .color  = hpp__color_ ## _name,         \
+                .entry  = hpp__entry_ ## _name,         \
+                .cmp    = hpp__nop_cmp,                 \
+                .collapse = hpp__nop_cmp,               \
+                .sort   = hpp__sort_ ## _name,          \
         }
 
 #define HPP__PRINT_FNS(_name)                           \
         {                                               \
                 .header = hpp__header_ ## _name,        \
                 .width  = hpp__width_ ## _name,         \
-                .entry  = hpp__entry_ ## _name          \
+                .entry  = hpp__entry_ ## _name,         \
+                .cmp    = hpp__nop_cmp,                 \
+                .collapse = hpp__nop_cmp,               \
+                .sort   = hpp__sort_ ## _name,          \
         }
 
 struct perf_hpp_fmt perf_hpp__format[] = {
@@ -248,28 +397,63 @@ struct perf_hpp_fmt perf_hpp__format[] = {
         HPP__COLOR_PRINT_FNS(overhead_us),
         HPP__COLOR_PRINT_FNS(overhead_guest_sys),
         HPP__COLOR_PRINT_FNS(overhead_guest_us),
+        HPP__COLOR_ACC_PRINT_FNS(overhead_acc),
         HPP__PRINT_FNS(samples),
         HPP__PRINT_FNS(period)
 };
 
 LIST_HEAD(perf_hpp__list);
+LIST_HEAD(perf_hpp__sort_list);
 
 
 #undef HPP__COLOR_PRINT_FNS
+#undef HPP__COLOR_ACC_PRINT_FNS
 #undef HPP__PRINT_FNS
 
 #undef HPP_PERCENT_FNS
+#undef HPP_PERCENT_ACC_FNS
 #undef HPP_RAW_FNS
 
 #undef __HPP_HEADER_FN
 #undef __HPP_WIDTH_FN
 #undef __HPP_COLOR_PERCENT_FN
 #undef __HPP_ENTRY_PERCENT_FN
+#undef __HPP_COLOR_ACC_PERCENT_FN
+#undef __HPP_ENTRY_ACC_PERCENT_FN
 #undef __HPP_ENTRY_RAW_FN
+#undef __HPP_SORT_FN
+#undef __HPP_SORT_ACC_FN
+#undef __HPP_SORT_RAW_FN
 
 
 void perf_hpp__init(void)
 {
+        struct list_head *list;
+        int i;
+
+        for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
+                struct perf_hpp_fmt *fmt = &perf_hpp__format[i];
+
+                INIT_LIST_HEAD(&fmt->list);
+
+                /* sort_list may be linked by setup_sorting() */
+                if (fmt->sort_list.next == NULL)
+                        INIT_LIST_HEAD(&fmt->sort_list);
+        }
+
+        /*
+         * If user specified field order, no need to setup default fields.
+         */
+        if (field_order)
+                return;
+
+        if (symbol_conf.cumulate_callchain) {
+                perf_hpp__column_enable(PERF_HPP__OVERHEAD_ACC);
+
+                perf_hpp__format[PERF_HPP__OVERHEAD].header =
+                                                hpp__header_overhead_self;
+        }
+
         perf_hpp__column_enable(PERF_HPP__OVERHEAD);
 
         if (symbol_conf.show_cpu_utilization) {
@@ -287,6 +471,17 @@ void perf_hpp__init(void)
 
         if (symbol_conf.show_total_period)
                 perf_hpp__column_enable(PERF_HPP__PERIOD);
+
+        /* prepend overhead field for backward compatiblity.  */
+        list = &perf_hpp__format[PERF_HPP__OVERHEAD].sort_list;
+        if (list_empty(list))
+                list_add(list, &perf_hpp__sort_list);
+
+        if (symbol_conf.cumulate_callchain) {
+                list = &perf_hpp__format[PERF_HPP__OVERHEAD_ACC].sort_list;
+                if (list_empty(list))
+                        list_add(list, &perf_hpp__sort_list);
+        }
 }
 
 void perf_hpp__column_register(struct perf_hpp_fmt *format)
@@ -294,29 +489,110 @@ void perf_hpp__column_register(struct perf_hpp_fmt *format)
         list_add_tail(&format->list, &perf_hpp__list);
 }
 
+void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
+{
+        list_del(&format->list);
+}
+
+void perf_hpp__register_sort_field(struct perf_hpp_fmt *format)
+{
+        list_add_tail(&format->sort_list, &perf_hpp__sort_list);
+}
+
 void perf_hpp__column_enable(unsigned col)
 {
         BUG_ON(col >= PERF_HPP__MAX_INDEX);
         perf_hpp__column_register(&perf_hpp__format[col]);
 }
 
-int hist_entry__sort_snprintf(struct hist_entry *he, char *s, size_t size,
-                              struct hists *hists)
+void perf_hpp__column_disable(unsigned col)
 {
-        const char *sep = symbol_conf.field_sep;
-        struct sort_entry *se;
-        int ret = 0;
+        BUG_ON(col >= PERF_HPP__MAX_INDEX);
+        perf_hpp__column_unregister(&perf_hpp__format[col]);
+}
+
+void perf_hpp__cancel_cumulate(void)
+{
+        if (field_order)
+                return;
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                if (se->elide)
+        perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC);
+        perf_hpp__format[PERF_HPP__OVERHEAD].header = hpp__header_overhead;
+}
+
+void perf_hpp__setup_output_field(void)
+{
+        struct perf_hpp_fmt *fmt;
+
+        /* append sort keys to output field */
+        perf_hpp__for_each_sort_list(fmt) {
+                if (!list_empty(&fmt->list))
                         continue;
 
-                ret += scnprintf(s + ret, size - ret, "%s", sep ?: "  ");
-                ret += se->se_snprintf(he, s + ret, size - ret,
-                                       hists__col_len(hists, se->se_width_idx));
+                /*
+                 * sort entry fields are dynamically created,
+                 * so they can share a same sort key even though
+                 * the list is empty.
+                 */
+                if (perf_hpp__is_sort_entry(fmt)) {
+                        struct perf_hpp_fmt *pos;
+
+                        perf_hpp__for_each_format(pos) {
+                                if (perf_hpp__same_sort_entry(pos, fmt))
+                                        goto next;
+                        }
+                }
+
+                perf_hpp__column_register(fmt);
+next:
+                continue;
         }
+}
 
-        return ret;
+void perf_hpp__append_sort_keys(void)
+{
+        struct perf_hpp_fmt *fmt;
+
+        /* append output fields to sort keys */
+        perf_hpp__for_each_format(fmt) {
+                if (!list_empty(&fmt->sort_list))
+                        continue;
+
+                /*
+                 * sort entry fields are dynamically created,
+                 * so they can share a same sort key even though
+                 * the list is empty.
+                 */
+                if (perf_hpp__is_sort_entry(fmt)) {
+                        struct perf_hpp_fmt *pos;
+
+                        perf_hpp__for_each_sort_list(pos) {
+                                if (perf_hpp__same_sort_entry(pos, fmt))
+                                        goto next;
+                        }
+                }
+
+                perf_hpp__register_sort_field(fmt);
+next:
+                continue;
+        }
+}
+
+void perf_hpp__reset_output_field(void)
+{
+        struct perf_hpp_fmt *fmt, *tmp;
+
+        /* reset output fields */
+        perf_hpp__for_each_format_safe(fmt, tmp) {
+                list_del_init(&fmt->list);
+                list_del_init(&fmt->sort_list);
+        }
+
+        /* reset sort keys */
+        perf_hpp__for_each_sort_list_safe(fmt, tmp) {
+                list_del_init(&fmt->list);
+                list_del_init(&fmt->sort_list);
+        }
 }
 
 /*
@@ -325,22 +601,23 @@ int hist_entry__sort_snprintf(struct hist_entry *he, char *s, size_t size,
 unsigned int hists__sort_list_width(struct hists *hists)
 {
         struct perf_hpp_fmt *fmt;
-        struct sort_entry *se;
-        int i = 0, ret = 0;
+        int ret = 0;
+        bool first = true;
         struct perf_hpp dummy_hpp;
 
         perf_hpp__for_each_format(fmt) {
-                if (i)
+                if (perf_hpp__should_skip(fmt))
+                        continue;
+
+                if (first)
+                        first = false;
+                else
                         ret += 2;
 
                 ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
         }
 
-        list_for_each_entry(se, &hist_entry__sort_list, list)
-                if (!se->elide)
-                        ret += 2 + hists__col_len(hists, se->se_width_idx);
-
-        if (verbose) /* Addr + origin */
+        if (verbose && sort__has_sym) /* Addr + origin */
                 ret += 3 + BITS_PER_LONG / 4;
 
         return ret;
diff --git a/tools/perf/ui/progress.h b/tools/perf/ui/progress.h
index 29ec8efffefb..f34f89eb607c 100644
--- a/tools/perf/ui/progress.h
+++ b/tools/perf/ui/progress.h
@@ -1,7 +1,7 @@
 #ifndef _PERF_UI_PROGRESS_H_
 #define _PERF_UI_PROGRESS_H_ 1
 
-#include <../types.h>
+#include <linux/types.h>
 
 void ui_progress__finish(void);
  
diff --git a/tools/perf/ui/setup.c b/tools/perf/ui/setup.c
index 5df5140a9f29..ba51fa8a1176 100644
--- a/tools/perf/ui/setup.c
+++ b/tools/perf/ui/setup.c
@@ -86,8 +86,6 @@ void setup_browser(bool fallback_to_pager)
                 use_browser = 0;
                 if (fallback_to_pager)
                         setup_pager();
-
-                perf_hpp__init();
                 break;
         }
 }
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index d59893edf031..90122abd3721 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -183,7 +183,8 @@ static size_t callchain__fprintf_graph(FILE *fp, struct rb_root *root,
                          * the symbol. No need to print it otherwise it appears as
                          * displayed twice.
                          */
-                        if (!i++ && sort__first_dimension == SORT_SYM)
+                        if (!i++ && field_order == NULL &&
+                            sort_order && !prefixcmp(sort_order, "sym"))
                                 continue;
                         if (!printed) {
                                 ret += callchain__fprintf_left_margin(fp, left_margin);
@@ -270,7 +271,9 @@ static size_t hist_entry_callchain__fprintf(struct hist_entry *he,
 {
         switch (callchain_param.mode) {
         case CHAIN_GRAPH_REL:
-                return callchain__fprintf_graph(fp, &he->sorted_chain, he->stat.period,
+                return callchain__fprintf_graph(fp, &he->sorted_chain,
+                                                symbol_conf.cumulate_callchain ?
+                                                he->stat_acc->period : he->stat.period,
                                                 left_margin);
                 break;
         case CHAIN_GRAPH_ABS:
@@ -296,18 +299,24 @@ static size_t hist_entry__callchain_fprintf(struct hist_entry *he,
         int left_margin = 0;
         u64 total_period = hists->stats.total_period;
 
-        if (sort__first_dimension == SORT_COMM) {
-                struct sort_entry *se = list_first_entry(&hist_entry__sort_list,
-                                                         typeof(*se), list);
-                left_margin = hists__col_len(hists, se->se_width_idx);
-                left_margin -= thread__comm_len(he->thread);
-        }
+        if (field_order == NULL && (sort_order == NULL ||
+                                    !prefixcmp(sort_order, "comm"))) {
+                struct perf_hpp_fmt *fmt;
+
+                perf_hpp__for_each_format(fmt) {
+                        if (!perf_hpp__is_sort_entry(fmt))
+                                continue;
 
+                        /* must be 'comm' sort entry */
+                        left_margin = fmt->width(fmt, NULL, hists_to_evsel(hists));
+                        left_margin -= thread__comm_len(he->thread);
+                        break;
+                }
+        }
         return hist_entry_callchain__fprintf(he, total_period, left_margin, fp);
 }
 
-static int hist_entry__period_snprintf(struct perf_hpp *hpp,
-                                       struct hist_entry *he)
+static int hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp)
 {
         const char *sep = symbol_conf.field_sep;
         struct perf_hpp_fmt *fmt;
@@ -319,6 +328,9 @@ static int hist_entry__period_snprintf(struct perf_hpp *hpp,
                 return 0;
 
         perf_hpp__for_each_format(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
+
                 /*
                  * If there's no field_sep, we still need
                  * to display initial '  '.
@@ -353,8 +365,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
         if (size == 0 || size > bfsz)
                 size = hpp.size = bfsz;
 
-        ret = hist_entry__period_snprintf(&hpp, he);
-        hist_entry__sort_snprintf(he, bf + ret, size - ret, hists);
+        hist_entry__snprintf(he, &hpp);
 
         ret = fprintf(fp, "%s\n", bf);
 
@@ -368,12 +379,10 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
                       int max_cols, float min_pcnt, FILE *fp)
 {
         struct perf_hpp_fmt *fmt;
-        struct sort_entry *se;
         struct rb_node *nd;
         size_t ret = 0;
         unsigned int width;
         const char *sep = symbol_conf.field_sep;
-        const char *col_width = symbol_conf.col_width_list_str;
         int nr_rows = 0;
         char bf[96];
         struct perf_hpp dummy_hpp = {
@@ -386,12 +395,19 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
 
         init_rem_hits();
 
+
+        perf_hpp__for_each_format(fmt)
+                perf_hpp__reset_width(fmt, hists);
+
         if (!show_header)
                 goto print_entries;
 
         fprintf(fp, "# ");
 
         perf_hpp__for_each_format(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
+
                 if (!first)
                         fprintf(fp, "%s", sep ?: "  ");
                 else
@@ -401,28 +417,6 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
                 fprintf(fp, "%s", bf);
         }
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                if (se->elide)
-                        continue;
-                if (sep) {
-                        fprintf(fp, "%c%s", *sep, se->se_header);
-                        continue;
-                }
-                width = strlen(se->se_header);
-                if (symbol_conf.col_width_list_str) {
-                        if (col_width) {
-                                hists__set_col_len(hists, se->se_width_idx,
-                                                   atoi(col_width));
-                                col_width = strchr(col_width, ',');
-                                if (col_width)
-                                        ++col_width;
-                        }
-                }
-                if (!hists__new_col_len(hists, se->se_width_idx, width))
-                        width = hists__col_len(hists, se->se_width_idx);
-                fprintf(fp, "  %*s", width, se->se_header);
-        }
-
         fprintf(fp, "\n");
         if (max_rows && ++nr_rows >= max_rows)
                 goto out;
@@ -437,6 +431,9 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
         perf_hpp__for_each_format(fmt) {
                 unsigned int i;
 
+                if (perf_hpp__should_skip(fmt))
+                        continue;
+
                 if (!first)
                         fprintf(fp, "%s", sep ?: "  ");
                 else
@@ -447,20 +444,6 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
                         fprintf(fp, ".");
         }
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                unsigned int i;
-
-                if (se->elide)
-                        continue;
-
-                fprintf(fp, "  ");
-                width = hists__col_len(hists, se->se_width_idx);
-                if (width == 0)
-                        width = strlen(se->se_header);
-                for (i = 0; i < width; i++)
-                        fprintf(fp, ".");
-        }
-
         fprintf(fp, "\n");
         if (max_rows && ++nr_rows >= max_rows)
                 goto out;
@@ -480,12 +463,12 @@ print_entries:
 
         for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
-                float percent = h->stat.period * 100.0 /
-                                        hists->stats.total_period;
+                float percent;
 
                 if (h->filtered)
                         continue;
 
+                percent = hist_entry__get_percent_limit(h);
                 if (percent < min_pcnt)
                         continue;
 
@@ -495,7 +478,7 @@ print_entries:
                         break;
 
                 if (h->ms.map == NULL && verbose > 1) {
-                        __map_groups__fprintf_maps(&h->thread->mg,
+                        __map_groups__fprintf_maps(h->thread->mg,
                                                    MAP__FUNCTION, verbose, fp);
                         fprintf(fp, "%.10s end\n", graph_dotted_line);
                 }
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index 56ad4f5287de..112d6e268150 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -3,7 +3,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
-#include "types.h"
+#include <linux/types.h>
 #include "symbol.h"
 #include "hist.h"
 #include "sort.h"
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index 6baabe63182b..a904a4cfe7d3 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -25,7 +25,7 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
         struct addr_location al;
         u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
         struct thread *thread = machine__findnew_thread(machine, sample->pid,
-                                                        sample->pid);
+                                                        sample->tid);
 
         if (thread == NULL) {
                 pr_err("problem processing %d event, skipping it.\n",
diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h
index 845ef865eced..ae392561470b 100644
--- a/tools/perf/util/build-id.h
+++ b/tools/perf/util/build-id.h
@@ -4,7 +4,7 @@
 #define BUILD_ID_SIZE 20
 
 #include "tool.h"
-#include "types.h"
+#include <linux/types.h>
 
 extern struct perf_tool build_id__mark_dso_hit_ops;
 struct dso;
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 8d9db454f1a9..48b6d3f50012 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -25,6 +25,84 @@
 
 __thread struct callchain_cursor callchain_cursor;
 
+int
+parse_callchain_report_opt(const char *arg)
+{
+        char *tok, *tok2;
+        char *endptr;
+
+        symbol_conf.use_callchain = true;
+
+        if (!arg)
+                return 0;
+
+        tok = strtok((char *)arg, ",");
+        if (!tok)
+                return -1;
+
+        /* get the output mode */
+        if (!strncmp(tok, "graph", strlen(arg))) {
+                callchain_param.mode = CHAIN_GRAPH_ABS;
+
+        } else if (!strncmp(tok, "flat", strlen(arg))) {
+                callchain_param.mode = CHAIN_FLAT;
+        } else if (!strncmp(tok, "fractal", strlen(arg))) {
+                callchain_param.mode = CHAIN_GRAPH_REL;
+        } else if (!strncmp(tok, "none", strlen(arg))) {
+                callchain_param.mode = CHAIN_NONE;
+                symbol_conf.use_callchain = false;
+                return 0;
+        } else {
+                return -1;
+        }
+
+        /* get the min percentage */
+        tok = strtok(NULL, ",");
+        if (!tok)
+                goto setup;
+
+        callchain_param.min_percent = strtod(tok, &endptr);
+        if (tok == endptr)
+                return -1;
+
+        /* get the print limit */
+        tok2 = strtok(NULL, ",");
+        if (!tok2)
+                goto setup;
+
+        if (tok2[0] != 'c') {
+                callchain_param.print_limit = strtoul(tok2, &endptr, 0);
+                tok2 = strtok(NULL, ",");
+                if (!tok2)
+                        goto setup;
+        }
+
+        /* get the call chain order */
+        if (!strncmp(tok2, "caller", strlen("caller")))
+                callchain_param.order = ORDER_CALLER;
+        else if (!strncmp(tok2, "callee", strlen("callee")))
+                callchain_param.order = ORDER_CALLEE;
+        else
+                return -1;
+
+        /* Get the sort key */
+        tok2 = strtok(NULL, ",");
+        if (!tok2)
+                goto setup;
+        if (!strncmp(tok2, "function", strlen("function")))
+                callchain_param.key = CCKEY_FUNCTION;
+        else if (!strncmp(tok2, "address", strlen("address")))
+                callchain_param.key = CCKEY_ADDRESS;
+        else
+                return -1;
+setup:
+        if (callchain_register_param(&callchain_param) < 0) {
+                pr_err("Can't register callchain params\n");
+                return -1;
+        }
+        return 0;
+}
+
 static void
 rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
                     enum chain_mode mode)
@@ -538,7 +616,8 @@ int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent
         if (sample->callchain == NULL)
                 return 0;
 
-        if (symbol_conf.use_callchain || sort__has_parent) {
+        if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain ||
+            sort__has_parent) {
                 return machine__resolve_callchain(al->machine, evsel, al->thread,
                                                   sample, parent, al, max_stack);
         }
@@ -551,3 +630,45 @@ int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *samp
                 return 0;
         return callchain_append(he->callchain, &callchain_cursor, sample->period);
 }
+
+int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *node,
+                        bool hide_unresolved)
+{
+        al->map = node->map;
+        al->sym = node->sym;
+        if (node->map)
+                al->addr = node->map->map_ip(node->map, node->ip);
+        else
+                al->addr = node->ip;
+
+        if (al->sym == NULL) {
+                if (hide_unresolved)
+                        return 0;
+                if (al->map == NULL)
+                        goto out;
+        }
+
+        if (al->map->groups == &al->machine->kmaps) {
+                if (machine__is_host(al->machine)) {
+                        al->cpumode = PERF_RECORD_MISC_KERNEL;
+                        al->level = 'k';
+                } else {
+                        al->cpumode = PERF_RECORD_MISC_GUEST_KERNEL;
+                        al->level = 'g';
+                }
+        } else {
+                if (machine__is_host(al->machine)) {
+                        al->cpumode = PERF_RECORD_MISC_USER;
+                        al->level = '.';
+                } else if (perf_guest) {
+                        al->cpumode = PERF_RECORD_MISC_GUEST_USER;
+                        al->level = 'u';
+                } else {
+                        al->cpumode = PERF_RECORD_MISC_HYPERVISOR;
+                        al->level = 'H';
+                }
+        }
+
+out:
+        return 1;
+}
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 8ad97e9b119f..8f84423a75da 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -7,6 +7,13 @@
 #include "event.h"
 #include "symbol.h"
 
+enum perf_call_graph_mode {
+        CALLCHAIN_NONE,
+        CALLCHAIN_FP,
+        CALLCHAIN_DWARF,
+        CALLCHAIN_MAX
+};
+
 enum chain_mode {
         CHAIN_NONE,
         CHAIN_FLAT,
@@ -155,6 +162,18 @@ int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent
                               struct perf_evsel *evsel, struct addr_location *al,
                               int max_stack);
 int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample);
+int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node *node,
+                        bool hide_unresolved);
 
 extern const char record_callchain_help[];
+int parse_callchain_report_opt(const char *arg);
+
+static inline void callchain_cursor_snapshot(struct callchain_cursor *dest,
+                                             struct callchain_cursor *src)
+{
+        *dest = *src;
+
+        dest->first = src->curr;
+        dest->nr -= src->pos;
+}
 #endif  /* __PERF_CALLCHAIN_H */
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 3e0fdd369ccb..24519e14ac56 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -11,6 +11,7 @@
 #include "util.h"
 #include "cache.h"
 #include "exec_cmd.h"
+#include "util/hist.h"  /* perf_hist_config */
 
 #define MAXNAME (256)
 
@@ -355,6 +356,9 @@ int perf_default_config(const char *var, const char *value,
         if (!prefixcmp(var, "core."))
                 return perf_default_core_config(var, value);
 
+        if (!prefixcmp(var, "hist."))
+                return perf_hist_config(var, value);
+
         /* Add other config variables here. */
         return 0;
 }
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 7fe4994eeb63..c4e55b71010c 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -317,3 +317,163 @@ int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep)
 {
         return cpu_map__build_map(cpus, corep, cpu_map__get_core);
 }
+
+/* setup simple routines to easily access node numbers given a cpu number */
+static int get_max_num(char *path, int *max)
+{
+        size_t num;
+        char *buf;
+        int err = 0;
+
+        if (filename__read_str(path, &buf, &num))
+                return -1;
+
+        buf[num] = '\0';
+
+        /* start on the right, to find highest node num */
+        while (--num) {
+                if ((buf[num] == ',') || (buf[num] == '-')) {
+                        num++;
+                        break;
+                }
+        }
+        if (sscanf(&buf[num], "%d", max) < 1) {
+                err = -1;
+                goto out;
+        }
+
+        /* convert from 0-based to 1-based */
+        (*max)++;
+
+out:
+        free(buf);
+        return err;
+}
+
+/* Determine highest possible cpu in the system for sparse allocation */
+static void set_max_cpu_num(void)
+{
+        const char *mnt;
+        char path[PATH_MAX];
+        int ret = -1;
+
+        /* set up default */
+        max_cpu_num = 4096;
+
+        mnt = sysfs__mountpoint();
+        if (!mnt)
+                goto out;
+
+        /* get the highest possible cpu number for a sparse allocation */
+        ret = snprintf(path, PATH_MAX, "%s/devices/system/cpu/possible", mnt);
+        if (ret == PATH_MAX) {
+                pr_err("sysfs path crossed PATH_MAX(%d) size\n", PATH_MAX);
+                goto out;
+        }
+
+        ret = get_max_num(path, &max_cpu_num);
+
+out:
+        if (ret)
+                pr_err("Failed to read max cpus, using default of %d\n", max_cpu_num);
+}
+
+/* Determine highest possible node in the system for sparse allocation */
+static void set_max_node_num(void)
+{
+        const char *mnt;
+        char path[PATH_MAX];
+        int ret = -1;
+
+        /* set up default */
+        max_node_num = 8;
+
+        mnt = sysfs__mountpoint();
+        if (!mnt)
+                goto out;
+
+        /* get the highest possible cpu number for a sparse allocation */
+        ret = snprintf(path, PATH_MAX, "%s/devices/system/node/possible", mnt);
+        if (ret == PATH_MAX) {
+                pr_err("sysfs path crossed PATH_MAX(%d) size\n", PATH_MAX);
+                goto out;
+        }
+
+        ret = get_max_num(path, &max_node_num);
+
+out:
+        if (ret)
+                pr_err("Failed to read max nodes, using default of %d\n", max_node_num);
+}
+
+static int init_cpunode_map(void)
+{
+        int i;
+
+        set_max_cpu_num();
+        set_max_node_num();
+
+        cpunode_map = calloc(max_cpu_num, sizeof(int));
+        if (!cpunode_map) {
+                pr_err("%s: calloc failed\n", __func__);
+                return -1;
+        }
+
+        for (i = 0; i < max_cpu_num; i++)
+                cpunode_map[i] = -1;
+
+        return 0;
+}
+
+int cpu__setup_cpunode_map(void)
+{
+        struct dirent *dent1, *dent2;
+        DIR *dir1, *dir2;
+        unsigned int cpu, mem;
+        char buf[PATH_MAX];
+        char path[PATH_MAX];
+        const char *mnt;
+        int n;
+
+        /* initialize globals */
+        if (init_cpunode_map())
+                return -1;
+
+        mnt = sysfs__mountpoint();
+        if (!mnt)
+                return 0;
+
+        n = snprintf(path, PATH_MAX, "%s/devices/system/node", mnt);
+        if (n == PATH_MAX) {
+                pr_err("sysfs path crossed PATH_MAX(%d) size\n", PATH_MAX);
+                return -1;
+        }
+
+        dir1 = opendir(path);
+        if (!dir1)
+                return 0;
+
+        /* walk tree and setup map */
+        while ((dent1 = readdir(dir1)) != NULL) {
+                if (dent1->d_type != DT_DIR || sscanf(dent1->d_name, "node%u", &mem) < 1)
+                        continue;
+
+                n = snprintf(buf, PATH_MAX, "%s/%s", path, dent1->d_name);
+                if (n == PATH_MAX) {
+                        pr_err("sysfs path crossed PATH_MAX(%d) size\n", PATH_MAX);
+                        continue;
+                }
+
+                dir2 = opendir(buf);
+                if (!dir2)
+                        continue;
+                while ((dent2 = readdir(dir2)) != NULL) {
+                        if (dent2->d_type != DT_LNK || sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
+                                continue;
+                        cpunode_map[cpu] = mem;
+                }
+                closedir(dir2);
+        }
+        closedir(dir1);
+        return 0;
+}
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index b123bb9d6f55..61a654849002 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -4,6 +4,9 @@
 #include <stdio.h>
 #include <stdbool.h>
 
+#include "perf.h"
+#include "util/debug.h"
+
 struct cpu_map {
         int nr;
         int map[];
@@ -46,4 +49,36 @@ static inline bool cpu_map__empty(const struct cpu_map *map)
         return map ? map->map[0] == -1 : true;
 }
 
+int max_cpu_num;
+int max_node_num;
+int *cpunode_map;
+
+int cpu__setup_cpunode_map(void);
+
+static inline int cpu__max_node(void)
+{
+        if (unlikely(!max_node_num))
+                pr_debug("cpu_map not initialized\n");
+
+        return max_node_num;
+}
+
+static inline int cpu__max_cpu(void)
+{
+        if (unlikely(!max_cpu_num))
+                pr_debug("cpu_map not initialized\n");
+
+        return max_cpu_num;
+}
+
+static inline int cpu__get_node(int cpu)
+{
+        if (unlikely(cpunode_map == NULL)) {
+                pr_debug("cpu_map not initialized\n");
+                return -1;
+        }
+
+        return cpunode_map[cpu];
+}
+
 #endif /* __PERF_CPUMAP_H */
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index ab06f1c03655..38efe95a7fdd 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -4,7 +4,7 @@
 #include <linux/types.h>
 #include <linux/rbtree.h>
 #include <stdbool.h>
-#include "types.h"
+#include <linux/types.h>
 #include "map.h"
 #include "build-id.h"
 
diff --git a/tools/perf/util/dwarf-aux.c b/tools/perf/util/dwarf-aux.c
index 7defd77105d0..cc66c4049e09 100644
--- a/tools/perf/util/dwarf-aux.c
+++ b/tools/perf/util/dwarf-aux.c
@@ -747,14 +747,17 @@ struct __find_variable_param {
 static int __die_find_variable_cb(Dwarf_Die *die_mem, void *data)
 {
         struct __find_variable_param *fvp = data;
+        Dwarf_Attribute attr;
         int tag;
 
         tag = dwarf_tag(die_mem);
         if ((tag == DW_TAG_formal_parameter ||
              tag == DW_TAG_variable) &&
-            die_compare_name(die_mem, fvp->name))
+            die_compare_name(die_mem, fvp->name) &&
+        /* Does the DIE have location information or external instance? */
+            (dwarf_attr(die_mem, DW_AT_external, &attr) ||
+             dwarf_attr(die_mem, DW_AT_location, &attr)))
                 return DIE_FIND_CB_END;
-
         if (dwarf_haspc(die_mem, fvp->addr))
                 return DIE_FIND_CB_CONTINUE;
         else
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 9d12aa6dd485..65795b835b39 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -699,7 +699,7 @@ void thread__find_addr_map(struct thread *thread,
                            enum map_type type, u64 addr,
                            struct addr_location *al)
 {
-        struct map_groups *mg = &thread->mg;
+        struct map_groups *mg = thread->mg;
         bool load_map = false;
 
         al->machine = machine;
@@ -788,7 +788,7 @@ int perf_event__preprocess_sample(const union perf_event *event,
 {
         u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
         struct thread *thread = machine__findnew_thread(machine, sample->pid,
-                                                        sample->pid);
+                                                        sample->tid);
 
         if (thread == NULL)
                 return -1;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 38457d447a13..d970232cb270 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -112,6 +112,30 @@ struct sample_read {
         };
 };
 
+struct ip_callchain {
+        u64 nr;
+        u64 ips[0];
+};
+
+struct branch_flags {
+        u64 mispred:1;
+        u64 predicted:1;
+        u64 in_tx:1;
+        u64 abort:1;
+        u64 reserved:60;
+};
+
+struct branch_entry {
+        u64                     from;
+        u64                     to;
+        struct branch_flags     flags;
+};
+
+struct branch_stack {
+        u64                     nr;
+        struct branch_entry     entries[0];
+};
+
 struct perf_sample {
         u64 ip;
         u32 pid, tid;
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 0c9926cfb292..a52e9a5bb2d0 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -5,12 +5,12 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <linux/perf_event.h>
-#include "types.h"
+#include <linux/types.h>
 #include "xyarray.h"
 #include "cgroup.h"
 #include "hist.h"
 #include "symbol.h"
- 
+
 struct perf_counts_values {
         union {
                 struct {
@@ -91,6 +91,11 @@ struct perf_evsel {
         char                    *group_name;
 };
 
+union u64_swap {
+        u64 val64;
+        u32 val32[2];
+};
+
 #define hists_to_evsel(h) container_of(h, struct perf_evsel, hists)
 
 struct cpu_map;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index a2d047bdf4ef..d08cfe499404 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -4,10 +4,10 @@
 #include <linux/perf_event.h>
 #include <sys/types.h>
 #include <stdbool.h>
-#include "types.h"
+#include <linux/bitmap.h>
+#include <linux/types.h>
 #include "event.h"
 
-#include <linux/bitmap.h>
 
 enum {
         HEADER_RESERVED         = 0,    /* always cleared */
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index f38590d7561b..5a0a4b2cadc4 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -4,6 +4,7 @@
 #include "session.h"
 #include "sort.h"
 #include "evsel.h"
+#include "annotate.h"
 #include <math.h>
 
 static bool hists__filter_entry_by_dso(struct hists *hists,
@@ -225,14 +226,20 @@ static void he_stat__decay(struct he_stat *he_stat)
 static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
 {
         u64 prev_period = he->stat.period;
+        u64 diff;
 
         if (prev_period == 0)
                 return true;
 
         he_stat__decay(&he->stat);
+        if (symbol_conf.cumulate_callchain)
+                he_stat__decay(he->stat_acc);
 
+        diff = prev_period - he->stat.period;
+
+        hists->stats.total_period -= diff;
         if (!he->filtered)
-                hists->stats.total_period -= prev_period - he->stat.period;
+                hists->stats.total_non_filtered_period -= diff;
 
         return he->stat.period == 0;
 }
@@ -259,8 +266,11 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
                         if (sort__need_collapse)
                                 rb_erase(&n->rb_node_in, &hists->entries_collapsed);
 
-                        hist_entry__free(n);
                         --hists->nr_entries;
+                        if (!n->filtered)
+                                --hists->nr_non_filtered_entries;
+
+                        hist_entry__free(n);
                 }
         }
 }
@@ -269,14 +279,31 @@ void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel)
  * histogram, sorted on item, collects periods
  */
 
-static struct hist_entry *hist_entry__new(struct hist_entry *template)
+static struct hist_entry *hist_entry__new(struct hist_entry *template,
+                                          bool sample_self)
 {
-        size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_root) : 0;
-        struct hist_entry *he = zalloc(sizeof(*he) + callchain_size);
+        size_t callchain_size = 0;
+        struct hist_entry *he;
+
+        if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain)
+                callchain_size = sizeof(struct callchain_root);
+
+        he = zalloc(sizeof(*he) + callchain_size);
 
         if (he != NULL) {
                 *he = *template;
 
+                if (symbol_conf.cumulate_callchain) {
+                        he->stat_acc = malloc(sizeof(he->stat));
+                        if (he->stat_acc == NULL) {
+                                free(he);
+                                return NULL;
+                        }
+                        memcpy(he->stat_acc, &he->stat, sizeof(he->stat));
+                        if (!sample_self)
+                                memset(&he->stat, 0, sizeof(he->stat));
+                }
+
                 if (he->ms.map)
                         he->ms.map->referenced = true;
 
@@ -288,6 +315,7 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
                          */
                         he->branch_info = malloc(sizeof(*he->branch_info));
                         if (he->branch_info == NULL) {
+                                free(he->stat_acc);
                                 free(he);
                                 return NULL;
                         }
@@ -317,15 +345,6 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
         return he;
 }
 
-void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h)
-{
-        if (!h->filtered) {
-                hists__calc_col_len(hists, h);
-                ++hists->nr_entries;
-                hists->stats.total_period += h->stat.period;
-        }
-}
-
 static u8 symbol__parent_filter(const struct symbol *parent)
 {
         if (symbol_conf.exclude_other && parent == NULL)
@@ -335,7 +354,8 @@ static u8 symbol__parent_filter(const struct symbol *parent)
 
 static struct hist_entry *add_hist_entry(struct hists *hists,
                                          struct hist_entry *entry,
-                                         struct addr_location *al)
+                                         struct addr_location *al,
+                                         bool sample_self)
 {
         struct rb_node **p;
         struct rb_node *parent = NULL;
@@ -359,7 +379,10 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
                 cmp = hist_entry__cmp(he, entry);
 
                 if (!cmp) {
-                        he_stat__add_period(&he->stat, period, weight);
+                        if (sample_self)
+                                he_stat__add_period(&he->stat, period, weight);
+                        if (symbol_conf.cumulate_callchain)
+                                he_stat__add_period(he->stat_acc, period, weight);
 
                         /*
                          * This mem info was allocated from sample__resolve_mem
@@ -387,15 +410,17 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
                         p = &(*p)->rb_right;
         }
 
-        he = hist_entry__new(entry);
+        he = hist_entry__new(entry, sample_self);
         if (!he)
                 return NULL;
 
-        hists->nr_entries++;
         rb_link_node(&he->rb_node_in, parent, p);
         rb_insert_color(&he->rb_node_in, hists->entries_in);
 out:
-        he_stat__add_cpumode_period(&he->stat, al->cpumode, period);
+        if (sample_self)
+                he_stat__add_cpumode_period(&he->stat, al->cpumode, period);
+        if (symbol_conf.cumulate_callchain)
+                he_stat__add_cpumode_period(he->stat_acc, al->cpumode, period);
         return he;
 }
 
@@ -404,7 +429,8 @@ struct hist_entry *__hists__add_entry(struct hists *hists,
                                       struct symbol *sym_parent,
                                       struct branch_info *bi,
                                       struct mem_info *mi,
-                                      u64 period, u64 weight, u64 transaction)
+                                      u64 period, u64 weight, u64 transaction,
+                                      bool sample_self)
 {
         struct hist_entry entry = {
                 .thread = al->thread,
@@ -429,17 +455,442 @@ struct hist_entry *__hists__add_entry(struct hists *hists,
                 .transaction = transaction,
         };
 
-        return add_hist_entry(hists, &entry, al);
+        return add_hist_entry(hists, &entry, al, sample_self);
+}
+
+static int
+iter_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
+                    struct addr_location *al __maybe_unused)
+{
+        return 0;
+}
+
+static int
+iter_add_next_nop_entry(struct hist_entry_iter *iter __maybe_unused,
+                        struct addr_location *al __maybe_unused)
+{
+        return 0;
+}
+
+static int
+iter_prepare_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
+{
+        struct perf_sample *sample = iter->sample;
+        struct mem_info *mi;
+
+        mi = sample__resolve_mem(sample, al);
+        if (mi == NULL)
+                return -ENOMEM;
+
+        iter->priv = mi;
+        return 0;
+}
+
+static int
+iter_add_single_mem_entry(struct hist_entry_iter *iter, struct addr_location *al)
+{
+        u64 cost;
+        struct mem_info *mi = iter->priv;
+        struct hist_entry *he;
+
+        if (mi == NULL)
+                return -EINVAL;
+
+        cost = iter->sample->weight;
+        if (!cost)
+                cost = 1;
+
+        /*
+         * must pass period=weight in order to get the correct
+         * sorting from hists__collapse_resort() which is solely
+         * based on periods. We want sorting be done on nr_events * weight
+         * and this is indirectly achieved by passing period=weight here
+         * and the he_stat__add_period() function.
+         */
+        he = __hists__add_entry(&iter->evsel->hists, al, iter->parent, NULL, mi,
+                                cost, cost, 0, true);
+        if (!he)
+                return -ENOMEM;
+
+        iter->he = he;
+        return 0;
+}
+
+static int
+iter_finish_mem_entry(struct hist_entry_iter *iter,
+                      struct addr_location *al __maybe_unused)
+{
+        struct perf_evsel *evsel = iter->evsel;
+        struct hist_entry *he = iter->he;
+        int err = -EINVAL;
+
+        if (he == NULL)
+                goto out;
+
+        hists__inc_nr_samples(&evsel->hists, he->filtered);
+
+        err = hist_entry__append_callchain(he, iter->sample);
+
+out:
+        /*
+         * We don't need to free iter->priv (mem_info) here since
+         * the mem info was either already freed in add_hist_entry() or
+         * passed to a new hist entry by hist_entry__new().
+         */
+        iter->priv = NULL;
+
+        iter->he = NULL;
+        return err;
+}
+
+static int
+iter_prepare_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
+{
+        struct branch_info *bi;
+        struct perf_sample *sample = iter->sample;
+
+        bi = sample__resolve_bstack(sample, al);
+        if (!bi)
+                return -ENOMEM;
+
+        iter->curr = 0;
+        iter->total = sample->branch_stack->nr;
+
+        iter->priv = bi;
+        return 0;
+}
+
+static int
+iter_add_single_branch_entry(struct hist_entry_iter *iter __maybe_unused,
+                             struct addr_location *al __maybe_unused)
+{
+        /* to avoid calling callback function */
+        iter->he = NULL;
+
+        return 0;
+}
+
+static int
+iter_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
+{
+        struct branch_info *bi = iter->priv;
+        int i = iter->curr;
+
+        if (bi == NULL)
+                return 0;
+
+        if (iter->curr >= iter->total)
+                return 0;
+
+        al->map = bi[i].to.map;
+        al->sym = bi[i].to.sym;
+        al->addr = bi[i].to.addr;
+        return 1;
+}
+
+static int
+iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *al)
+{
+        struct branch_info *bi;
+        struct perf_evsel *evsel = iter->evsel;
+        struct hist_entry *he = NULL;
+        int i = iter->curr;
+        int err = 0;
+
+        bi = iter->priv;
+
+        if (iter->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
+                goto out;
+
+        /*
+         * The report shows the percentage of total branches captured
+         * and not events sampled. Thus we use a pseudo period of 1.
+         */
+        he = __hists__add_entry(&evsel->hists, al, iter->parent, &bi[i], NULL,
+                                1, 1, 0, true);
+        if (he == NULL)
+                return -ENOMEM;
+
+        hists__inc_nr_samples(&evsel->hists, he->filtered);
+
+out:
+        iter->he = he;
+        iter->curr++;
+        return err;
+}
+
+static int
+iter_finish_branch_entry(struct hist_entry_iter *iter,
+                         struct addr_location *al __maybe_unused)
+{
+        zfree(&iter->priv);
+        iter->he = NULL;
+
+        return iter->curr >= iter->total ? 0 : -1;
+}
+
+static int
+iter_prepare_normal_entry(struct hist_entry_iter *iter __maybe_unused,
+                          struct addr_location *al __maybe_unused)
+{
+        return 0;
+}
+
+static int
+iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location *al)
+{
+        struct perf_evsel *evsel = iter->evsel;
+        struct perf_sample *sample = iter->sample;
+        struct hist_entry *he;
+
+        he = __hists__add_entry(&evsel->hists, al, iter->parent, NULL, NULL,
+                                sample->period, sample->weight,
+                                sample->transaction, true);
+        if (he == NULL)
+                return -ENOMEM;
+
+        iter->he = he;
+        return 0;
+}
+
+static int
+iter_finish_normal_entry(struct hist_entry_iter *iter,
+                         struct addr_location *al __maybe_unused)
+{
+        struct hist_entry *he = iter->he;
+        struct perf_evsel *evsel = iter->evsel;
+        struct perf_sample *sample = iter->sample;
+
+        if (he == NULL)
+                return 0;
+
+        iter->he = NULL;
+
+        hists__inc_nr_samples(&evsel->hists, he->filtered);
+
+        return hist_entry__append_callchain(he, sample);
+}
+
+static int
+iter_prepare_cumulative_entry(struct hist_entry_iter *iter __maybe_unused,
+                              struct addr_location *al __maybe_unused)
+{
+        struct hist_entry **he_cache;
+
+        callchain_cursor_commit(&callchain_cursor);
+
+        /*
+         * This is for detecting cycles or recursions so that they're
+         * cumulated only one time to prevent entries more than 100%
+         * overhead.
+         */
+        he_cache = malloc(sizeof(*he_cache) * (PERF_MAX_STACK_DEPTH + 1));
+        if (he_cache == NULL)
+                return -ENOMEM;
+
+        iter->priv = he_cache;
+        iter->curr = 0;
+
+        return 0;
+}
+
+static int
+iter_add_single_cumulative_entry(struct hist_entry_iter *iter,
+                                 struct addr_location *al)
+{
+        struct perf_evsel *evsel = iter->evsel;
+        struct perf_sample *sample = iter->sample;
+        struct hist_entry **he_cache = iter->priv;
+        struct hist_entry *he;
+        int err = 0;
+
+        he = __hists__add_entry(&evsel->hists, al, iter->parent, NULL, NULL,
+                                sample->period, sample->weight,
+                                sample->transaction, true);
+        if (he == NULL)
+                return -ENOMEM;
+
+        iter->he = he;
+        he_cache[iter->curr++] = he;
+
+        callchain_append(he->callchain, &callchain_cursor, sample->period);
+
+        /*
+         * We need to re-initialize the cursor since callchain_append()
+         * advanced the cursor to the end.
+         */
+        callchain_cursor_commit(&callchain_cursor);
+
+        hists__inc_nr_samples(&evsel->hists, he->filtered);
+
+        return err;
+}
+
+static int
+iter_next_cumulative_entry(struct hist_entry_iter *iter,
+                           struct addr_location *al)
+{
+        struct callchain_cursor_node *node;
+
+        node = callchain_cursor_current(&callchain_cursor);
+        if (node == NULL)
+                return 0;
+
+        return fill_callchain_info(al, node, iter->hide_unresolved);
+}
+
+static int
+iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
+                               struct addr_location *al)
+{
+        struct perf_evsel *evsel = iter->evsel;
+        struct perf_sample *sample = iter->sample;
+        struct hist_entry **he_cache = iter->priv;
+        struct hist_entry *he;
+        struct hist_entry he_tmp = {
+                .cpu = al->cpu,
+                .thread = al->thread,
+                .comm = thread__comm(al->thread),
+                .ip = al->addr,
+                .ms = {
+                        .map = al->map,
+                        .sym = al->sym,
+                },
+                .parent = iter->parent,
+        };
+        int i;
+        struct callchain_cursor cursor;
+
+        callchain_cursor_snapshot(&cursor, &callchain_cursor);
+
+        callchain_cursor_advance(&callchain_cursor);
+
+        /*
+         * Check if there's duplicate entries in the callchain.
+         * It's possible that it has cycles or recursive calls.
+         */
+        for (i = 0; i < iter->curr; i++) {
+                if (hist_entry__cmp(he_cache[i], &he_tmp) == 0) {
+                        /* to avoid calling callback function */
+                        iter->he = NULL;
+                        return 0;
+                }
+        }
+
+        he = __hists__add_entry(&evsel->hists, al, iter->parent, NULL, NULL,
+                                sample->period, sample->weight,
+                                sample->transaction, false);
+        if (he == NULL)
+                return -ENOMEM;
+
+        iter->he = he;
+        he_cache[iter->curr++] = he;
+
+        callchain_append(he->callchain, &cursor, sample->period);
+        return 0;
+}
+
+static int
+iter_finish_cumulative_entry(struct hist_entry_iter *iter,
+                             struct addr_location *al __maybe_unused)
+{
+        zfree(&iter->priv);
+        iter->he = NULL;
+
+        return 0;
+}
+
+const struct hist_iter_ops hist_iter_mem = {
+        .prepare_entry          = iter_prepare_mem_entry,
+        .add_single_entry       = iter_add_single_mem_entry,
+        .next_entry             = iter_next_nop_entry,
+        .add_next_entry         = iter_add_next_nop_entry,
+        .finish_entry           = iter_finish_mem_entry,
+};
+
+const struct hist_iter_ops hist_iter_branch = {
+        .prepare_entry          = iter_prepare_branch_entry,
+        .add_single_entry       = iter_add_single_branch_entry,
+        .next_entry             = iter_next_branch_entry,
+        .add_next_entry         = iter_add_next_branch_entry,
+        .finish_entry           = iter_finish_branch_entry,
+};
+
+const struct hist_iter_ops hist_iter_normal = {
+        .prepare_entry          = iter_prepare_normal_entry,
+        .add_single_entry       = iter_add_single_normal_entry,
+        .next_entry             = iter_next_nop_entry,
+        .add_next_entry         = iter_add_next_nop_entry,
+        .finish_entry           = iter_finish_normal_entry,
+};
+
+const struct hist_iter_ops hist_iter_cumulative = {
+        .prepare_entry          = iter_prepare_cumulative_entry,
+        .add_single_entry       = iter_add_single_cumulative_entry,
+        .next_entry             = iter_next_cumulative_entry,
+        .add_next_entry         = iter_add_next_cumulative_entry,
+        .finish_entry           = iter_finish_cumulative_entry,
+};
+
+int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
+                         struct perf_evsel *evsel, struct perf_sample *sample,
+                         int max_stack_depth, void *arg)
+{
+        int err, err2;
+
+        err = sample__resolve_callchain(sample, &iter->parent, evsel, al,
+                                        max_stack_depth);
+        if (err)
+                return err;
+
+        iter->evsel = evsel;
+        iter->sample = sample;
+
+        err = iter->ops->prepare_entry(iter, al);
+        if (err)
+                goto out;
+
+        err = iter->ops->add_single_entry(iter, al);
+        if (err)
+                goto out;
+
+        if (iter->he && iter->add_entry_cb) {
+                err = iter->add_entry_cb(iter, al, true, arg);
+                if (err)
+                        goto out;
+        }
+
+        while (iter->ops->next_entry(iter, al)) {
+                err = iter->ops->add_next_entry(iter, al);
+                if (err)
+                        break;
+
+                if (iter->he && iter->add_entry_cb) {
+                        err = iter->add_entry_cb(iter, al, false, arg);
+                        if (err)
+                                goto out;
+                }
+        }
+
+out:
+        err2 = iter->ops->finish_entry(iter, al);
+        if (!err)
+                err = err2;
+
+        return err;
 }
 
 int64_t
 hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
 {
-        struct sort_entry *se;
+        struct perf_hpp_fmt *fmt;
         int64_t cmp = 0;
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                cmp = se->se_cmp(left, right);
+        perf_hpp__for_each_sort_list(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
+
+                cmp = fmt->cmp(left, right);
                 if (cmp)
                         break;
         }
@@ -450,15 +901,14 @@ hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
 int64_t
 hist_entry__collapse(struct hist_entry *left, struct hist_entry *right)
 {
-        struct sort_entry *se;
+        struct perf_hpp_fmt *fmt;
         int64_t cmp = 0;
 
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                int64_t (*f)(struct hist_entry *, struct hist_entry *);
-
-                f = se->se_collapse ?: se->se_cmp;
+        perf_hpp__for_each_sort_list(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
 
-                cmp = f(left, right);
+                cmp = fmt->collapse(left, right);
                 if (cmp)
                         break;
         }
@@ -470,6 +920,7 @@ void hist_entry__free(struct hist_entry *he)
 {
         zfree(&he->branch_info);
         zfree(&he->mem_info);
+        zfree(&he->stat_acc);
         free_srcline(he->srcline);
         free(he);
 }
@@ -495,6 +946,8 @@ static bool hists__collapse_insert_entry(struct hists *hists __maybe_unused,
 
                 if (!cmp) {
                         he_stat__add_stat(&iter->stat, &he->stat);
+                        if (symbol_conf.cumulate_callchain)
+                                he_stat__add_stat(iter->stat_acc, he->stat_acc);
 
                         if (symbol_conf.use_callchain) {
                                 callchain_cursor_reset(&callchain_cursor);
@@ -571,64 +1024,50 @@ void hists__collapse_resort(struct hists *hists, struct ui_progress *prog)
         }
 }
 
-/*
- * reverse the map, sort on period.
- */
-
-static int period_cmp(u64 period_a, u64 period_b)
-{
-        if (period_a > period_b)
-                return 1;
-        if (period_a < period_b)
-                return -1;
-        return 0;
-}
-
-static int hist_entry__sort_on_period(struct hist_entry *a,
-                                      struct hist_entry *b)
+static int hist_entry__sort(struct hist_entry *a, struct hist_entry *b)
 {
-        int ret;
-        int i, nr_members;
-        struct perf_evsel *evsel;
-        struct hist_entry *pair;
-        u64 *periods_a, *periods_b;
+        struct perf_hpp_fmt *fmt;
+        int64_t cmp = 0;
 
-        ret = period_cmp(a->stat.period, b->stat.period);
-        if (ret || !symbol_conf.event_group)
-                return ret;
+        perf_hpp__for_each_sort_list(fmt) {
+                if (perf_hpp__should_skip(fmt))
+                        continue;
 
-        evsel = hists_to_evsel(a->hists);
-        nr_members = evsel->nr_members;
-        if (nr_members <= 1)
-                return ret;
+                cmp = fmt->sort(a, b);
+                if (cmp)
+                        break;
+        }
 
-        periods_a = zalloc(sizeof(periods_a) * nr_members);
-        periods_b = zalloc(sizeof(periods_b) * nr_members);
+        return cmp;
+}
 
-        if (!periods_a || !periods_b)
-                goto out;
+static void hists__reset_filter_stats(struct hists *hists)
+{
+        hists->nr_non_filtered_entries = 0;
+        hists->stats.total_non_filtered_period = 0;
+}
 
-        list_for_each_entry(pair, &a->pairs.head, pairs.node) {
-                evsel = hists_to_evsel(pair->hists);
-                periods_a[perf_evsel__group_idx(evsel)] = pair->stat.period;
-        }
+void hists__reset_stats(struct hists *hists)
+{
+        hists->nr_entries = 0;
+        hists->stats.total_period = 0;
 
-        list_for_each_entry(pair, &b->pairs.head, pairs.node) {
-                evsel = hists_to_evsel(pair->hists);
-                periods_b[perf_evsel__group_idx(evsel)] = pair->stat.period;
-        }
+        hists__reset_filter_stats(hists);
+}
 
-        for (i = 1; i < nr_members; i++) {
-                ret = period_cmp(periods_a[i], periods_b[i]);
-                if (ret)
-                        break;
-        }
+static void hists__inc_filter_stats(struct hists *hists, struct hist_entry *h)
+{
+        hists->nr_non_filtered_entries++;
+        hists->stats.total_non_filtered_period += h->stat.period;
+}
 
-out:
-        free(periods_a);
-        free(periods_b);
+void hists__inc_stats(struct hists *hists, struct hist_entry *h)
+{
+        if (!h->filtered)
+                hists__inc_filter_stats(hists, h);
 
-        return ret;
+        hists->nr_entries++;
+        hists->stats.total_period += h->stat.period;
 }
 
 static void __hists__insert_output_entry(struct rb_root *entries,
@@ -647,7 +1086,7 @@ static void __hists__insert_output_entry(struct rb_root *entries,
                 parent = *p;
                 iter = rb_entry(parent, struct hist_entry, rb_node);
 
-                if (hist_entry__sort_on_period(he, iter) > 0)
+                if (hist_entry__sort(he, iter) > 0)
                         p = &(*p)->rb_left;
                 else
                         p = &(*p)->rb_right;
@@ -674,8 +1113,7 @@ void hists__output_resort(struct hists *hists)
         next = rb_first(root);
         hists->entries = RB_ROOT;
 
-        hists->nr_entries = 0;
-        hists->stats.total_period = 0;
+        hists__reset_stats(hists);
         hists__reset_col_len(hists);
 
         while (next) {
@@ -683,7 +1121,10 @@ void hists__output_resort(struct hists *hists)
                 next = rb_next(&n->rb_node_in);
 
                 __hists__insert_output_entry(&hists->entries, n, min_callchain_hits);
-                hists__inc_nr_entries(hists, n);
+                hists__inc_stats(hists, n);
+
+                if (!n->filtered)
+                        hists__calc_col_len(hists, n);
         }
 }
 
@@ -694,13 +1135,13 @@ static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h
         if (h->filtered)
                 return;
 
-        ++hists->nr_entries;
-        if (h->ms.unfolded)
-                hists->nr_entries += h->nr_rows;
+        /* force fold unfiltered entry for simplicity */
+        h->ms.unfolded = false;
         h->row_offset = 0;
-        hists->stats.total_period += h->stat.period;
-        hists->stats.nr_events[PERF_RECORD_SAMPLE] += h->stat.nr_events;
 
+        hists->stats.nr_non_filtered_samples += h->stat.nr_events;
+
+        hists__inc_filter_stats(hists, h);
         hists__calc_col_len(hists, h);
 }
 
@@ -721,8 +1162,9 @@ void hists__filter_by_dso(struct hists *hists)
 {
         struct rb_node *nd;
 
-        hists->nr_entries = hists->stats.total_period = 0;
-        hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+        hists->stats.nr_non_filtered_samples = 0;
+
+        hists__reset_filter_stats(hists);
         hists__reset_col_len(hists);
 
         for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
@@ -754,8 +1196,9 @@ void hists__filter_by_thread(struct hists *hists)
 {
         struct rb_node *nd;
 
-        hists->nr_entries = hists->stats.total_period = 0;
-        hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+        hists->stats.nr_non_filtered_samples = 0;
+
+        hists__reset_filter_stats(hists);
         hists__reset_col_len(hists);
 
         for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
@@ -785,8 +1228,9 @@ void hists__filter_by_symbol(struct hists *hists)
 {
         struct rb_node *nd;
 
-        hists->nr_entries = hists->stats.total_period = 0;
-        hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+        hists->stats.nr_non_filtered_samples = 0;
+
+        hists__reset_filter_stats(hists);
         hists__reset_col_len(hists);
 
         for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
@@ -810,6 +1254,13 @@ void hists__inc_nr_events(struct hists *hists, u32 type)
         events_stats__inc(&hists->stats, type);
 }
 
+void hists__inc_nr_samples(struct hists *hists, bool filtered)
+{
+        events_stats__inc(&hists->stats, PERF_RECORD_SAMPLE);
+        if (!filtered)
+                hists->stats.nr_non_filtered_samples++;
+}
+
 static struct hist_entry *hists__add_dummy_entry(struct hists *hists,
                                                  struct hist_entry *pair)
 {
@@ -841,13 +1292,13 @@ static struct hist_entry *hists__add_dummy_entry(struct hists *hists,
                         p = &(*p)->rb_right;
         }
 
-        he = hist_entry__new(pair);
+        he = hist_entry__new(pair, true);
         if (he) {
                 memset(&he->stat, 0, sizeof(he->stat));
                 he->hists = hists;
                 rb_link_node(&he->rb_node_in, parent, p);
                 rb_insert_color(&he->rb_node_in, root);
-                hists__inc_nr_entries(hists, he);
+                hists__inc_stats(hists, he);
                 he->dummy = true;
         }
 out:
@@ -931,3 +1382,30 @@ int hists__link(struct hists *leader, struct hists *other)
 
         return 0;
 }
+
+u64 hists__total_period(struct hists *hists)
+{
+        return symbol_conf.filter_relative ? hists->stats.total_non_filtered_period :
+                hists->stats.total_period;
+}
+
+int parse_filter_percentage(const struct option *opt __maybe_unused,
+                            const char *arg, int unset __maybe_unused)
+{
+        if (!strcmp(arg, "relative"))
+                symbol_conf.filter_relative = true;
+        else if (!strcmp(arg, "absolute"))
+                symbol_conf.filter_relative = false;
+        else
+                return -1;
+
+        return 0;
+}
+
+int perf_hist_config(const char *var, const char *value)
+{
+        if (!strcmp(var, "hist.percentage"))
+                return parse_filter_percentage(NULL, value, 0);
+
+        return 0;
+}
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 1f1f513dfe7f..d2bf03575d5f 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -37,9 +37,11 @@ enum hist_filter {
  */
 struct events_stats {
         u64 total_period;
+        u64 total_non_filtered_period;
         u64 total_lost;
         u64 total_invalid_chains;
         u32 nr_events[PERF_RECORD_HEADER_MAX];
+        u32 nr_non_filtered_samples;
         u32 nr_lost_warned;
         u32 nr_unknown_events;
         u32 nr_invalid_chains;
@@ -83,6 +85,7 @@ struct hists {
         struct rb_root          entries;
         struct rb_root          entries_collapsed;
         u64                     nr_entries;
+        u64                     nr_non_filtered_entries;
         const struct thread     *thread_filter;
         const struct dso        *dso_filter;
         const char              *uid_filter_str;
@@ -93,12 +96,50 @@ struct hists {
         u16                     col_len[HISTC_NR_COLS];
 };
 
+struct hist_entry_iter;
+
+struct hist_iter_ops {
+        int (*prepare_entry)(struct hist_entry_iter *, struct addr_location *);
+        int (*add_single_entry)(struct hist_entry_iter *, struct addr_location *);
+        int (*next_entry)(struct hist_entry_iter *, struct addr_location *);
+        int (*add_next_entry)(struct hist_entry_iter *, struct addr_location *);
+        int (*finish_entry)(struct hist_entry_iter *, struct addr_location *);
+};
+
+struct hist_entry_iter {
+        int total;
+        int curr;
+
+        bool hide_unresolved;
+
+        struct perf_evsel *evsel;
+        struct perf_sample *sample;
+        struct hist_entry *he;
+        struct symbol *parent;
+        void *priv;
+
+        const struct hist_iter_ops *ops;
+        /* user-defined callback function (optional) */
+        int (*add_entry_cb)(struct hist_entry_iter *iter,
+                            struct addr_location *al, bool single, void *arg);
+};
+
+extern const struct hist_iter_ops hist_iter_normal;
+extern const struct hist_iter_ops hist_iter_branch;
+extern const struct hist_iter_ops hist_iter_mem;
+extern const struct hist_iter_ops hist_iter_cumulative;
+
 struct hist_entry *__hists__add_entry(struct hists *hists,
                                       struct addr_location *al,
                                       struct symbol *parent,
                                       struct branch_info *bi,
                                       struct mem_info *mi, u64 period,
-                                      u64 weight, u64 transaction);
+                                      u64 weight, u64 transaction,
+                                      bool sample_self);
+int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
+                         struct perf_evsel *evsel, struct perf_sample *sample,
+                         int max_stack_depth, void *arg);
+
 int64_t hist_entry__cmp(struct hist_entry *left, struct hist_entry *right);
 int64_t hist_entry__collapse(struct hist_entry *left, struct hist_entry *right);
 int hist_entry__transaction_len(void);
@@ -112,8 +153,11 @@ void hists__collapse_resort(struct hists *hists, struct ui_progress *prog);
 void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
 void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 
-void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h);
+u64 hists__total_period(struct hists *hists);
+void hists__reset_stats(struct hists *hists);
+void hists__inc_stats(struct hists *hists, struct hist_entry *h);
 void hists__inc_nr_events(struct hists *hists, u32 type);
+void hists__inc_nr_samples(struct hists *hists, bool filtered);
 void events_stats__inc(struct events_stats *stats, u32 type);
 size_t events_stats__fprintf(struct events_stats *stats, FILE *fp);
 
@@ -124,6 +168,12 @@ void hists__filter_by_dso(struct hists *hists);
 void hists__filter_by_thread(struct hists *hists);
 void hists__filter_by_symbol(struct hists *hists);
 
+static inline bool hists__has_filter(struct hists *hists)
+{
+        return hists->thread_filter || hists->dso_filter ||
+                hists->symbol_filter_str;
+}
+
 u16 hists__col_len(struct hists *hists, enum hist_column col);
 void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len);
 bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len);
@@ -149,15 +199,30 @@ struct perf_hpp_fmt {
                      struct hist_entry *he);
         int (*entry)(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
                      struct hist_entry *he);
+        int64_t (*cmp)(struct hist_entry *a, struct hist_entry *b);
+        int64_t (*collapse)(struct hist_entry *a, struct hist_entry *b);
+        int64_t (*sort)(struct hist_entry *a, struct hist_entry *b);
 
         struct list_head list;
+        struct list_head sort_list;
+        bool elide;
 };
 
 extern struct list_head perf_hpp__list;
+extern struct list_head perf_hpp__sort_list;
 
 #define perf_hpp__for_each_format(format) \
         list_for_each_entry(format, &perf_hpp__list, list)
 
+#define perf_hpp__for_each_format_safe(format, tmp)     \
+        list_for_each_entry_safe(format, tmp, &perf_hpp__list, list)
+
+#define perf_hpp__for_each_sort_list(format) \
+        list_for_each_entry(format, &perf_hpp__sort_list, sort_list)
+
+#define perf_hpp__for_each_sort_list_safe(format, tmp)  \
+        list_for_each_entry_safe(format, tmp, &perf_hpp__sort_list, sort_list)
+
 extern struct perf_hpp_fmt perf_hpp__format[];
 
 enum {
@@ -167,6 +232,7 @@ enum {
         PERF_HPP__OVERHEAD_US,
         PERF_HPP__OVERHEAD_GUEST_SYS,
         PERF_HPP__OVERHEAD_GUEST_US,
+        PERF_HPP__OVERHEAD_ACC,
         PERF_HPP__SAMPLES,
         PERF_HPP__PERIOD,
 
@@ -175,15 +241,36 @@ enum {
 
 void perf_hpp__init(void);
 void perf_hpp__column_register(struct perf_hpp_fmt *format);
+void perf_hpp__column_unregister(struct perf_hpp_fmt *format);
 void perf_hpp__column_enable(unsigned col);
+void perf_hpp__column_disable(unsigned col);
+void perf_hpp__cancel_cumulate(void);
+
+void perf_hpp__register_sort_field(struct perf_hpp_fmt *format);
+void perf_hpp__setup_output_field(void);
+void perf_hpp__reset_output_field(void);
+void perf_hpp__append_sort_keys(void);
+
+bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format);
+bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b);
+
+static inline bool perf_hpp__should_skip(struct perf_hpp_fmt *format)
+{
+        return format->elide;
+}
+
+void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists);
 
 typedef u64 (*hpp_field_fn)(struct hist_entry *he);
 typedef int (*hpp_callback_fn)(struct perf_hpp *hpp, bool front);
 typedef int (*hpp_snprint_fn)(struct perf_hpp *hpp, const char *fmt, ...);
 
 int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
-               hpp_field_fn get_field, hpp_callback_fn callback,
-               const char *fmt, hpp_snprint_fn print_fn, bool fmt_percent);
+               hpp_field_fn get_field, const char *fmt,
+               hpp_snprint_fn print_fn, bool fmt_percent);
+int __hpp__fmt_acc(struct perf_hpp *hpp, struct hist_entry *he,
+                   hpp_field_fn get_field, const char *fmt,
+                   hpp_snprint_fn print_fn, bool fmt_percent);
 
 static inline void advance_hpp(struct perf_hpp *hpp, int inc)
 {
@@ -250,4 +337,10 @@ static inline int script_browse(const char *script_opt __maybe_unused)
 #endif
 
 unsigned int hists__sort_list_width(struct hists *hists);
+
+struct option;
+int parse_filter_percentage(const struct option *opt __maybe_unused,
+                            const char *arg, int unset __maybe_unused);
+int perf_hist_config(const char *var, const char *value);
+
 #endif  /* __PERF_HIST_H */
diff --git a/tools/perf/util/include/linux/bitmap.h b/tools/perf/util/include/linux/bitmap.h
index bb162e40c76c..01ffd12dc791 100644
--- a/tools/perf/util/include/linux/bitmap.h
+++ b/tools/perf/util/include/linux/bitmap.h
@@ -4,6 +4,9 @@
 #include <string.h>
 #include <linux/bitops.h>
 
+#define DECLARE_BITMAP(name,bits) \
+        unsigned long name[BITS_TO_LONGS(bits)]
+
 int __bitmap_weight(const unsigned long *bitmap, int bits);
 void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
                  const unsigned long *bitmap2, int bits);
diff --git a/tools/perf/util/include/linux/export.h b/tools/perf/util/include/linux/export.h
deleted file mode 100644
index b43e2dc21e04..000000000000
--- a/tools/perf/util/include/linux/export.h
+++ /dev/null
@@ -1,6 +0,0 @@
-#ifndef PERF_LINUX_MODULE_H
-#define PERF_LINUX_MODULE_H
-
-#define EXPORT_SYMBOL(name)
-
-#endif
diff --git a/tools/perf/util/include/linux/list.h b/tools/perf/util/include/linux/list.h
index bfe0a2afd0d2..76ddbc726343 100644
--- a/tools/perf/util/include/linux/list.h
+++ b/tools/perf/util/include/linux/list.h
@@ -1,4 +1,5 @@
 #include <linux/kernel.h>
+#include <linux/types.h>
 
 #include "../../../../include/linux/list.h"
 
diff --git a/tools/perf/util/include/linux/types.h b/tools/perf/util/include/linux/types.h
deleted file mode 100644
index eb464786c084..000000000000
--- a/tools/perf/util/include/linux/types.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef _PERF_LINUX_TYPES_H_
-#define _PERF_LINUX_TYPES_H_
-
-#include <asm/types.h>
-
-#ifndef __bitwise
-#define __bitwise
-#endif
-
-#ifndef __le32
-typedef __u32 __bitwise __le32;
-#endif
-
-#define DECLARE_BITMAP(name,bits) \
-        unsigned long name[BITS_TO_LONGS(bits)]
-
-struct list_head {
-        struct list_head *next, *prev;
-};
-
-struct hlist_head {
-        struct hlist_node *first;
-};
-
-struct hlist_node {
-        struct hlist_node *next, **pprev;
-};
-
-#endif
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 27c2a5efe450..7409ac8de51c 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -316,6 +316,17 @@ static struct thread *__machine__findnew_thread(struct machine *machine,
                 rb_link_node(&th->rb_node, parent, p);
                 rb_insert_color(&th->rb_node, &machine->threads);
                 machine->last_match = th;
+
+                /*
+                 * We have to initialize map_groups separately
+                 * after rb tree is updated.
+                 *
+                 * The reason is that we call machine__findnew_thread
+                 * within thread__init_map_groups to find the thread
+                 * leader and that would screwed the rb tree.
+                 */
+                if (thread__init_map_groups(th, machine))
+                        return NULL;
         }
 
         return th;
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 39cd2d0faff6..8ccbb32eda25 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -32,6 +32,93 @@ static inline int is_no_dso_memory(const char *filename)
                !strcmp(filename, "[heap]");
 }
 
+static inline int is_android_lib(const char *filename)
+{
+        return !strncmp(filename, "/data/app-lib", 13) ||
+               !strncmp(filename, "/system/lib", 11);
+}
+
+static inline bool replace_android_lib(const char *filename, char *newfilename)
+{
+        const char *libname;
+        char *app_abi;
+        size_t app_abi_length, new_length;
+        size_t lib_length = 0;
+
+        libname  = strrchr(filename, '/');
+        if (libname)
+                lib_length = strlen(libname);
+
+        app_abi = getenv("APP_ABI");
+        if (!app_abi)
+                return false;
+
+        app_abi_length = strlen(app_abi);
+
+        if (!strncmp(filename, "/data/app-lib", 13)) {
+                char *apk_path;
+
+                if (!app_abi_length)
+                        return false;
+
+                new_length = 7 + app_abi_length + lib_length;
+
+                apk_path = getenv("APK_PATH");
+                if (apk_path) {
+                        new_length += strlen(apk_path) + 1;
+                        if (new_length > PATH_MAX)
+                                return false;
+                        snprintf(newfilename, new_length,
+                                 "%s/libs/%s/%s", apk_path, app_abi, libname);
+                } else {
+                        if (new_length > PATH_MAX)
+                                return false;
+                        snprintf(newfilename, new_length,
+                                 "libs/%s/%s", app_abi, libname);
+                }
+                return true;
+        }
+
+        if (!strncmp(filename, "/system/lib/", 11)) {
+                char *ndk, *app;
+                const char *arch;
+                size_t ndk_length;
+                size_t app_length;
+
+                ndk = getenv("NDK_ROOT");
+                app = getenv("APP_PLATFORM");
+
+                if (!(ndk && app))
+                        return false;
+
+                ndk_length = strlen(ndk);
+                app_length = strlen(app);
+
+                if (!(ndk_length && app_length && app_abi_length))
+                        return false;
+
+                arch = !strncmp(app_abi, "arm", 3) ? "arm" :
+                       !strncmp(app_abi, "mips", 4) ? "mips" :
+                       !strncmp(app_abi, "x86", 3) ? "x86" : NULL;
+
+                if (!arch)
+                        return false;
+
+                new_length = 27 + ndk_length +
+                             app_length + lib_length
+                           + strlen(arch);
+
+                if (new_length > PATH_MAX)
+                        return false;
+                snprintf(newfilename, new_length,
+                        "%s/platforms/%s/arch-%s/usr/lib/%s",
+                        ndk, app, arch, libname);
+
+                return true;
+        }
+        return false;
+}
+
 void map__init(struct map *map, enum map_type type,
                u64 start, u64 end, u64 pgoff, struct dso *dso)
 {
@@ -59,8 +146,9 @@ struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
         if (map != NULL) {
                 char newfilename[PATH_MAX];
                 struct dso *dso;
-                int anon, no_dso, vdso;
+                int anon, no_dso, vdso, android;
 
+                android = is_android_lib(filename);
                 anon = is_anon_memory(filename);
                 vdso = is_vdso_map(filename);
                 no_dso = is_no_dso_memory(filename);
@@ -75,6 +163,11 @@ struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
                         filename = newfilename;
                 }
 
+                if (android) {
+                        if (replace_android_lib(filename, newfilename))
+                                filename = newfilename;
+                }
+
                 if (vdso) {
                         pgoff = 0;
                         dso = vdso__dso_findnew(dsos__list);
@@ -323,6 +416,7 @@ void map_groups__init(struct map_groups *mg)
                 INIT_LIST_HEAD(&mg->removed_maps[i]);
         }
         mg->machine = NULL;
+        mg->refcnt = 1;
 }
 
 static void maps__delete(struct rb_root *maps)
@@ -358,6 +452,28 @@ void map_groups__exit(struct map_groups *mg)
         }
 }
 
+struct map_groups *map_groups__new(void)
+{
+        struct map_groups *mg = malloc(sizeof(*mg));
+
+        if (mg != NULL)
+                map_groups__init(mg);
+
+        return mg;
+}
+
+void map_groups__delete(struct map_groups *mg)
+{
+        map_groups__exit(mg);
+        free(mg);
+}
+
+void map_groups__put(struct map_groups *mg)
+{
+        if (--mg->refcnt == 0)
+                map_groups__delete(mg);
+}
+
 void map_groups__flush(struct map_groups *mg)
 {
         int type;
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index f00f058afb3b..ae2d45110588 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -6,7 +6,7 @@
 #include <linux/rbtree.h>
 #include <stdio.h>
 #include <stdbool.h>
-#include "types.h"
+#include <linux/types.h>
 
 enum map_type {
         MAP__FUNCTION = 0,
@@ -59,8 +59,20 @@ struct map_groups {
         struct rb_root   maps[MAP__NR_TYPES];
         struct list_head removed_maps[MAP__NR_TYPES];
         struct machine   *machine;
+        int              refcnt;
 };
 
+struct map_groups *map_groups__new(void);
+void map_groups__delete(struct map_groups *mg);
+
+static inline struct map_groups *map_groups__get(struct map_groups *mg)
+{
+        ++mg->refcnt;
+        return mg;
+}
+
+void map_groups__put(struct map_groups *mg);
+
 static inline struct kmap *map__kmap(struct map *map)
 {
         return (struct kmap *)(map + 1);
diff --git a/tools/perf/util/pager.c b/tools/perf/util/pager.c
index 3322b8446e89..31ee02d4e988 100644
--- a/tools/perf/util/pager.c
+++ b/tools/perf/util/pager.c
@@ -57,13 +57,13 @@ void setup_pager(void)
         }
         if (!pager)
                 pager = getenv("PAGER");
-        if (!pager) {
-                if (!access("/usr/bin/pager", X_OK))
-                        pager = "/usr/bin/pager";
-        }
+        if (!(pager || access("/usr/bin/pager", X_OK)))
+                pager = "/usr/bin/pager";
+        if (!(pager || access("/usr/bin/less", X_OK)))
+                pager = "/usr/bin/less";
         if (!pager)
-                pager = "less";
-        else if (!*pager || !strcmp(pager, "cat"))
+                pager = "cat";
+        if (!*pager || !strcmp(pager, "cat"))
                 return;
 
         spawned_pager = 1; /* means we are emitting to terminal */
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index f1cb4c4b3c70..df094b4ed5ed 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -6,9 +6,8 @@
 
 #include <linux/list.h>
 #include <stdbool.h>
-#include "types.h"
+#include <linux/types.h>
 #include <linux/perf_event.h>
-#include "types.h"
 
 struct list_head;
 struct perf_evsel;
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 4eb67ec333f1..0bc87ba46bf3 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -9,7 +9,7 @@
 
 #include <linux/compiler.h>
 #include <linux/list.h>
-#include "types.h"
+#include <linux/types.h>
 #include "util.h"
 #include "parse-events.h"
 #include "parse-events-bison.h"
@@ -299,6 +299,18 @@ PE_PREFIX_MEM PE_VALUE sep_dc
 }
 
 event_legacy_tracepoint:
+PE_NAME '-' PE_NAME ':' PE_NAME
+{
+        struct parse_events_evlist *data = _data;
+        struct list_head *list;
+        char sys_name[128];
+        snprintf(&sys_name, 128, "%s-%s", $1, $3);
+
+        ALLOC_LIST(list);
+        ABORT_ON(parse_events_add_tracepoint(list, &data->idx, &sys_name, $5));
+        $$ = list;
+}
+|
 PE_NAME ':' PE_NAME
 {
         struct parse_events_evlist *data = _data;
diff --git a/tools/perf/util/perf_regs.h b/tools/perf/util/perf_regs.h
index d6e8b6a8d7f3..79c78f74e0cf 100644
--- a/tools/perf/util/perf_regs.h
+++ b/tools/perf/util/perf_regs.h
@@ -1,7 +1,7 @@
 #ifndef __PERF_REGS_H
 #define __PERF_REGS_H
 
-#include "types.h"
+#include <linux/types.h>
 #include "event.h"
 
 #ifdef HAVE_PERF_REGS_SUPPORT
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 00a7dcb2f55c..7a811eb61f75 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -284,17 +284,17 @@ static int pmu_aliases(const char *name, struct list_head *head)
 static int pmu_alias_terms(struct perf_pmu_alias *alias,
                            struct list_head *terms)
 {
-        struct parse_events_term *term, *clone;
+        struct parse_events_term *term, *cloned;
         LIST_HEAD(list);
         int ret;
 
         list_for_each_entry(term, &alias->terms, list) {
-                ret = parse_events_term__clone(&clone, term);
+                ret = parse_events_term__clone(&cloned, term);
                 if (ret) {
                         parse_events__free_terms(&list);
                         return ret;
                 }
-                list_add_tail(&clone->list, &list);
+                list_add_tail(&cloned->list, &list);
         }
         list_splice(&list, terms);
         return 0;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 8b64125a9281..c14a543ce1f3 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -1,7 +1,7 @@
 #ifndef __PMU_H
 #define __PMU_H
 
-#include <linux/bitops.h>
+#include <linux/bitmap.h>
 #include <linux/perf_event.h>
 #include <stdbool.h>
 
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c
index 562762117639..9d8eb26f0533 100644
--- a/tools/perf/util/probe-finder.c
+++ b/tools/perf/util/probe-finder.c
@@ -511,12 +511,12 @@ static int convert_variable(Dwarf_Die *vr_die, struct probe_finder *pf)
 
         ret = convert_variable_location(vr_die, pf->addr, pf->fb_ops,
                                         &pf->sp_die, pf->tvar);
-        if (ret == -ENOENT)
+        if (ret == -ENOENT || ret == -EINVAL)
                 pr_err("Failed to find the location of %s at this address.\n"
                        " Perhaps, it has been optimized out.\n", pf->pvar->var);
         else if (ret == -ENOTSUP)
                 pr_err("Sorry, we don't support this variable location yet.\n");
-        else if (pf->pvar->field) {
+        else if (ret == 0 && pf->pvar->field) {
                 ret = convert_variable_fields(vr_die, pf->pvar->var,
                                               pf->pvar->field, &pf->tvar->ref,
                                               &die_mem);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 55960f22233c..64a186edc7be 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1625,13 +1625,14 @@ out_delete_map:
 void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
                                 bool full)
 {
-        int fd = perf_data_file__fd(session->file);
         struct stat st;
-        int ret;
+        int fd, ret;
 
         if (session == NULL || fp == NULL)
                 return;
 
+        fd = perf_data_file__fd(session->file);
+
         ret = fstat(fd, &st);
         if (ret == -1)
                 return;
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 635cd8f8b22e..45512baaab67 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -2,12 +2,18 @@
 #include "hist.h"
 #include "comm.h"
 #include "symbol.h"
+#include "evsel.h"
 
 regex_t         parent_regex;
 const char      default_parent_pattern[] = "^sys_|^do_page_fault";
 const char      *parent_pattern = default_parent_pattern;
 const char      default_sort_order[] = "comm,dso,symbol";
-const char      *sort_order = default_sort_order;
+const char      default_branch_sort_order[] = "comm,dso_from,symbol_from,dso_to,symbol_to";
+const char      default_mem_sort_order[] = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
+const char      default_top_sort_order[] = "dso,symbol";
+const char      default_diff_sort_order[] = "dso,symbol";
+const char      *sort_order;
+const char      *field_order;
 regex_t         ignore_callees_regex;
 int             have_ignore_callees = 0;
 int             sort__need_collapse = 0;
@@ -16,9 +22,6 @@ int		sort__has_sym = 0;
 int             sort__has_dso = 0;
 enum sort_mode  sort__mode = SORT_MODE__NORMAL;
 
-enum sort_type  sort__first_dimension;
-
-LIST_HEAD(hist_entry__sort_list);
 
 static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...)
 {
@@ -93,6 +96,12 @@ sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
         return comm__str(right->comm) - comm__str(left->comm);
 }
 
+static int64_t
+sort__comm_sort(struct hist_entry *left, struct hist_entry *right)
+{
+        return strcmp(comm__str(right->comm), comm__str(left->comm));
+}
+
 static int hist_entry__comm_snprintf(struct hist_entry *he, char *bf,
                                      size_t size, unsigned int width)
 {
@@ -103,6 +112,7 @@ struct sort_entry sort_comm = {
         .se_header      = "Command",
         .se_cmp         = sort__comm_cmp,
         .se_collapse    = sort__comm_collapse,
+        .se_sort        = sort__comm_sort,
         .se_snprintf    = hist_entry__comm_snprintf,
         .se_width_idx   = HISTC_COMM,
 };
@@ -116,7 +126,7 @@ static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
         const char *dso_name_l, *dso_name_r;
 
         if (!dso_l || !dso_r)
-                return cmp_null(dso_l, dso_r);
+                return cmp_null(dso_r, dso_l);
 
         if (verbose) {
                 dso_name_l = dso_l->long_name;
@@ -132,7 +142,7 @@ static int64_t _sort__dso_cmp(struct map *map_l, struct map *map_r)
 static int64_t
 sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
 {
-        return _sort__dso_cmp(left->ms.map, right->ms.map);
+        return _sort__dso_cmp(right->ms.map, left->ms.map);
 }
 
 static int _hist_entry__dso_snprintf(struct map *map, char *bf,
@@ -204,6 +214,15 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
         return _sort__sym_cmp(left->ms.sym, right->ms.sym);
 }
 
+static int64_t
+sort__sym_sort(struct hist_entry *left, struct hist_entry *right)
+{
+        if (!left->ms.sym || !right->ms.sym)
+                return cmp_null(left->ms.sym, right->ms.sym);
+
+        return strcmp(right->ms.sym->name, left->ms.sym->name);
+}
+
 static int _hist_entry__sym_snprintf(struct map *map, struct symbol *sym,
                                      u64 ip, char level, char *bf, size_t size,
                                      unsigned int width)
@@ -250,6 +269,7 @@ static int hist_entry__sym_snprintf(struct hist_entry *he, char *bf,
 struct sort_entry sort_sym = {
         .se_header      = "Symbol",
         .se_cmp         = sort__sym_cmp,
+        .se_sort        = sort__sym_sort,
         .se_snprintf    = hist_entry__sym_snprintf,
         .se_width_idx   = HISTC_SYMBOL,
 };
@@ -277,7 +297,7 @@ sort__srcline_cmp(struct hist_entry *left, struct hist_entry *right)
                                             map__rip_2objdump(map, right->ip));
                 }
         }
-        return strcmp(left->srcline, right->srcline);
+        return strcmp(right->srcline, left->srcline);
 }
 
 static int hist_entry__srcline_snprintf(struct hist_entry *he, char *bf,
@@ -305,7 +325,7 @@ sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
         if (!sym_l || !sym_r)
                 return cmp_null(sym_l, sym_r);
 
-        return strcmp(sym_l->name, sym_r->name);
+        return strcmp(sym_r->name, sym_l->name);
 }
 
 static int hist_entry__parent_snprintf(struct hist_entry *he, char *bf,
@@ -1027,19 +1047,194 @@ static struct sort_dimension memory_sort_dimensions[] = {
 
 #undef DIM
 
-static void __sort_dimension__add(struct sort_dimension *sd, enum sort_type idx)
+struct hpp_dimension {
+        const char              *name;
+        struct perf_hpp_fmt     *fmt;
+        int                     taken;
+};
+
+#define DIM(d, n) { .name = n, .fmt = &perf_hpp__format[d], }
+
+static struct hpp_dimension hpp_sort_dimensions[] = {
+        DIM(PERF_HPP__OVERHEAD, "overhead"),
+        DIM(PERF_HPP__OVERHEAD_SYS, "overhead_sys"),
+        DIM(PERF_HPP__OVERHEAD_US, "overhead_us"),
+        DIM(PERF_HPP__OVERHEAD_GUEST_SYS, "overhead_guest_sys"),
+        DIM(PERF_HPP__OVERHEAD_GUEST_US, "overhead_guest_us"),
+        DIM(PERF_HPP__OVERHEAD_ACC, "overhead_children"),
+        DIM(PERF_HPP__SAMPLES, "sample"),
+        DIM(PERF_HPP__PERIOD, "period"),
+};
+
+#undef DIM
+
+struct hpp_sort_entry {
+        struct perf_hpp_fmt hpp;
+        struct sort_entry *se;
+};
+
+bool perf_hpp__same_sort_entry(struct perf_hpp_fmt *a, struct perf_hpp_fmt *b)
 {
-        if (sd->taken)
+        struct hpp_sort_entry *hse_a;
+        struct hpp_sort_entry *hse_b;
+
+        if (!perf_hpp__is_sort_entry(a) || !perf_hpp__is_sort_entry(b))
+                return false;
+
+        hse_a = container_of(a, struct hpp_sort_entry, hpp);
+        hse_b = container_of(b, struct hpp_sort_entry, hpp);
+
+        return hse_a->se == hse_b->se;
+}
+
+void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
+{
+        struct hpp_sort_entry *hse;
+
+        if (!perf_hpp__is_sort_entry(fmt))
                 return;
 
+        hse = container_of(fmt, struct hpp_sort_entry, hpp);
+        hists__new_col_len(hists, hse->se->se_width_idx,
+                           strlen(hse->se->se_header));
+}
+
+static int __sort__hpp_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+                              struct perf_evsel *evsel)
+{
+        struct hpp_sort_entry *hse;
+        size_t len;
+
+        hse = container_of(fmt, struct hpp_sort_entry, hpp);
+        len = hists__col_len(&evsel->hists, hse->se->se_width_idx);
+
+        return scnprintf(hpp->buf, hpp->size, "%*s", len, hse->se->se_header);
+}
+
+static int __sort__hpp_width(struct perf_hpp_fmt *fmt,
+                             struct perf_hpp *hpp __maybe_unused,
+                             struct perf_evsel *evsel)
+{
+        struct hpp_sort_entry *hse;
+
+        hse = container_of(fmt, struct hpp_sort_entry, hpp);
+
+        return hists__col_len(&evsel->hists, hse->se->se_width_idx);
+}
+
+static int __sort__hpp_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
+                             struct hist_entry *he)
+{
+        struct hpp_sort_entry *hse;
+        size_t len;
+
+        hse = container_of(fmt, struct hpp_sort_entry, hpp);
+        len = hists__col_len(he->hists, hse->se->se_width_idx);
+
+        return hse->se->se_snprintf(he, hpp->buf, hpp->size, len);
+}
+
+static struct hpp_sort_entry *
+__sort_dimension__alloc_hpp(struct sort_dimension *sd)
+{
+        struct hpp_sort_entry *hse;
+
+        hse = malloc(sizeof(*hse));
+        if (hse == NULL) {
+                pr_err("Memory allocation failed\n");
+                return NULL;
+        }
+
+        hse->se = sd->entry;
+        hse->hpp.header = __sort__hpp_header;
+        hse->hpp.width = __sort__hpp_width;
+        hse->hpp.entry = __sort__hpp_entry;
+        hse->hpp.color = NULL;
+
+        hse->hpp.cmp = sd->entry->se_cmp;
+        hse->hpp.collapse = sd->entry->se_collapse ? : sd->entry->se_cmp;
+        hse->hpp.sort = sd->entry->se_sort ? : hse->hpp.collapse;
+
+        INIT_LIST_HEAD(&hse->hpp.list);
+        INIT_LIST_HEAD(&hse->hpp.sort_list);
+        hse->hpp.elide = false;
+
+        return hse;
+}
+
+bool perf_hpp__is_sort_entry(struct perf_hpp_fmt *format)
+{
+        return format->header == __sort__hpp_header;
+}
+
+static int __sort_dimension__add_hpp_sort(struct sort_dimension *sd)
+{
+        struct hpp_sort_entry *hse = __sort_dimension__alloc_hpp(sd);
+
+        if (hse == NULL)
+                return -1;
+
+        perf_hpp__register_sort_field(&hse->hpp);
+        return 0;
+}
+
+static int __sort_dimension__add_hpp_output(struct sort_dimension *sd)
+{
+        struct hpp_sort_entry *hse = __sort_dimension__alloc_hpp(sd);
+
+        if (hse == NULL)
+                return -1;
+
+        perf_hpp__column_register(&hse->hpp);
+        return 0;
+}
+
+static int __sort_dimension__add(struct sort_dimension *sd)
+{
+        if (sd->taken)
+                return 0;
+
+        if (__sort_dimension__add_hpp_sort(sd) < 0)
+                return -1;
+
         if (sd->entry->se_collapse)
                 sort__need_collapse = 1;
 
-        if (list_empty(&hist_entry__sort_list))
-                sort__first_dimension = idx;
+        sd->taken = 1;
+
+        return 0;
+}
+
+static int __hpp_dimension__add(struct hpp_dimension *hd)
+{
+        if (!hd->taken) {
+                hd->taken = 1;
+
+                perf_hpp__register_sort_field(hd->fmt);
+        }
+        return 0;
+}
+
+static int __sort_dimension__add_output(struct sort_dimension *sd)
+{
+        if (sd->taken)
+                return 0;
+
+        if (__sort_dimension__add_hpp_output(sd) < 0)
+                return -1;
 
-        list_add_tail(&sd->entry->list, &hist_entry__sort_list);
         sd->taken = 1;
+        return 0;
+}
+
+static int __hpp_dimension__add_output(struct hpp_dimension *hd)
+{
+        if (!hd->taken) {
+                hd->taken = 1;
+
+                perf_hpp__column_register(hd->fmt);
+        }
+        return 0;
 }
 
 int sort_dimension__add(const char *tok)
@@ -1068,8 +1263,16 @@ int sort_dimension__add(const char *tok)
                         sort__has_dso = 1;
                 }
 
-                __sort_dimension__add(sd, i);
-                return 0;
+                return __sort_dimension__add(sd);
+        }
+
+        for (i = 0; i < ARRAY_SIZE(hpp_sort_dimensions); i++) {
+                struct hpp_dimension *hd = &hpp_sort_dimensions[i];
+
+                if (strncasecmp(tok, hd->name, strlen(tok)))
+                        continue;
+
+                return __hpp_dimension__add(hd);
         }
 
         for (i = 0; i < ARRAY_SIZE(bstack_sort_dimensions); i++) {
@@ -1084,7 +1287,7 @@ int sort_dimension__add(const char *tok)
                 if (sd->entry == &sort_sym_from || sd->entry == &sort_sym_to)
                         sort__has_sym = 1;
 
-                __sort_dimension__add(sd, i + __SORT_BRANCH_STACK);
+                __sort_dimension__add(sd);
                 return 0;
         }
 
@@ -1100,18 +1303,47 @@ int sort_dimension__add(const char *tok)
                 if (sd->entry == &sort_mem_daddr_sym)
                         sort__has_sym = 1;
 
-                __sort_dimension__add(sd, i + __SORT_MEMORY_MODE);
+                __sort_dimension__add(sd);
                 return 0;
         }
 
         return -ESRCH;
 }
 
-int setup_sorting(void)
+static const char *get_default_sort_order(void)
 {
-        char *tmp, *tok, *str = strdup(sort_order);
+        const char *default_sort_orders[] = {
+                default_sort_order,
+                default_branch_sort_order,
+                default_mem_sort_order,
+                default_top_sort_order,
+                default_diff_sort_order,
+        };
+
+        BUG_ON(sort__mode >= ARRAY_SIZE(default_sort_orders));
+
+        return default_sort_orders[sort__mode];
+}
+
+static int __setup_sorting(void)
+{
+        char *tmp, *tok, *str;
+        const char *sort_keys = sort_order;
         int ret = 0;
 
+        if (sort_keys == NULL) {
+                if (field_order) {
+                        /*
+                         * If user specified field order but no sort order,
+                         * we'll honor it and not add default sort orders.
+                         */
+                        return 0;
+                }
+
+                sort_keys = get_default_sort_order();
+        }
+
+        str = strdup(sort_keys);
         if (str == NULL) {
                 error("Not enough memory to setup sort keys");
                 return -ENOMEM;
@@ -1133,66 +1365,235 @@ int setup_sorting(void)
         return ret;
 }
 
-static void sort_entry__setup_elide(struct sort_entry *se,
-                                    struct strlist *list,
-                                    const char *list_name, FILE *fp)
+void perf_hpp__set_elide(int idx, bool elide)
+{
+        struct perf_hpp_fmt *fmt;
+        struct hpp_sort_entry *hse;
+
+        perf_hpp__for_each_format(fmt) {
+                if (!perf_hpp__is_sort_entry(fmt))
+                        continue;
+
+                hse = container_of(fmt, struct hpp_sort_entry, hpp);
+                if (hse->se->se_width_idx == idx) {
+                        fmt->elide = elide;
+                        break;
+                }
+        }
+}
+
+static bool __get_elide(struct strlist *list, const char *list_name, FILE *fp)
 {
         if (list && strlist__nr_entries(list) == 1) {
                 if (fp != NULL)
                         fprintf(fp, "# %s: %s\n", list_name,
                                 strlist__entry(list, 0)->s);
-                se->elide = true;
+                return true;
+        }
+        return false;
+}
+
+static bool get_elide(int idx, FILE *output)
+{
+        switch (idx) {
+        case HISTC_SYMBOL:
+                return __get_elide(symbol_conf.sym_list, "symbol", output);
+        case HISTC_DSO:
+                return __get_elide(symbol_conf.dso_list, "dso", output);
+        case HISTC_COMM:
+                return __get_elide(symbol_conf.comm_list, "comm", output);
+        default:
+                break;
         }
+
+        if (sort__mode != SORT_MODE__BRANCH)
+                return false;
+
+        switch (idx) {
+        case HISTC_SYMBOL_FROM:
+                return __get_elide(symbol_conf.sym_from_list, "sym_from", output);
+        case HISTC_SYMBOL_TO:
+                return __get_elide(symbol_conf.sym_to_list, "sym_to", output);
+        case HISTC_DSO_FROM:
+                return __get_elide(symbol_conf.dso_from_list, "dso_from", output);
+        case HISTC_DSO_TO:
+                return __get_elide(symbol_conf.dso_to_list, "dso_to", output);
+        default:
+                break;
+        }
+
+        return false;
 }
 
 void sort__setup_elide(FILE *output)
 {
-        struct sort_entry *se;
+        struct perf_hpp_fmt *fmt;
+        struct hpp_sort_entry *hse;
 
-        sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                "dso", output);
-        sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list,
-                                "comm", output);
-        sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list,
-                                "symbol", output);
-
-        if (sort__mode == SORT_MODE__BRANCH) {
-                sort_entry__setup_elide(&sort_dso_from,
-                                        symbol_conf.dso_from_list,
-                                        "dso_from", output);
-                sort_entry__setup_elide(&sort_dso_to,
-                                        symbol_conf.dso_to_list,
-                                        "dso_to", output);
-                sort_entry__setup_elide(&sort_sym_from,
-                                        symbol_conf.sym_from_list,
-                                        "sym_from", output);
-                sort_entry__setup_elide(&sort_sym_to,
-                                        symbol_conf.sym_to_list,
-                                        "sym_to", output);
-        } else if (sort__mode == SORT_MODE__MEMORY) {
-                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                        "symbol_daddr", output);
-                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                        "dso_daddr", output);
-                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                        "mem", output);
-                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                        "local_weight", output);
-                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                        "tlb", output);
-                sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list,
-                                        "snoop", output);
+        perf_hpp__for_each_format(fmt) {
+                if (!perf_hpp__is_sort_entry(fmt))
+                        continue;
+
+                hse = container_of(fmt, struct hpp_sort_entry, hpp);
+                fmt->elide = get_elide(hse->se->se_width_idx, output);
         }
 
         /*
          * It makes no sense to elide all of sort entries.
          * Just revert them to show up again.
          */
-        list_for_each_entry(se, &hist_entry__sort_list, list) {
-                if (!se->elide)
+        perf_hpp__for_each_format(fmt) {
+                if (!perf_hpp__is_sort_entry(fmt))
+                        continue;
+
+                if (!fmt->elide)
                         return;
         }
 
-        list_for_each_entry(se, &hist_entry__sort_list, list)
-                se->elide = false;
+        perf_hpp__for_each_format(fmt) {
+                if (!perf_hpp__is_sort_entry(fmt))
+                        continue;
+
+                fmt->elide = false;
+        }
+}
+
+static int output_field_add(char *tok)
+{
+        unsigned int i;
+
+        for (i = 0; i < ARRAY_SIZE(common_sort_dimensions); i++) {
+                struct sort_dimension *sd = &common_sort_dimensions[i];
+
+                if (strncasecmp(tok, sd->name, strlen(tok)))
+                        continue;
+
+                return __sort_dimension__add_output(sd);
+        }
+
+        for (i = 0; i < ARRAY_SIZE(hpp_sort_dimensions); i++) {
+                struct hpp_dimension *hd = &hpp_sort_dimensions[i];
+
+                if (strncasecmp(tok, hd->name, strlen(tok)))
+                        continue;
+
+                return __hpp_dimension__add_output(hd);
+        }
+
+        for (i = 0; i < ARRAY_SIZE(bstack_sort_dimensions); i++) {
+                struct sort_dimension *sd = &bstack_sort_dimensions[i];
+
+                if (strncasecmp(tok, sd->name, strlen(tok)))
+                        continue;
+
+                return __sort_dimension__add_output(sd);
+        }
+
+        for (i = 0; i < ARRAY_SIZE(memory_sort_dimensions); i++) {
+                struct sort_dimension *sd = &memory_sort_dimensions[i];
+
+                if (strncasecmp(tok, sd->name, strlen(tok)))
+                        continue;
+
+                return __sort_dimension__add_output(sd);
+        }
+
+        return -ESRCH;
+}
+
+static void reset_dimensions(void)
+{
+        unsigned int i;
+
+        for (i = 0; i < ARRAY_SIZE(common_sort_dimensions); i++)
+                common_sort_dimensions[i].taken = 0;
+
+        for (i = 0; i < ARRAY_SIZE(hpp_sort_dimensions); i++)
+                hpp_sort_dimensions[i].taken = 0;
+
+        for (i = 0; i < ARRAY_SIZE(bstack_sort_dimensions); i++)
+                bstack_sort_dimensions[i].taken = 0;
+
+        for (i = 0; i < ARRAY_SIZE(memory_sort_dimensions); i++)
+                memory_sort_dimensions[i].taken = 0;
+}
+
+static int __setup_output_field(void)
+{
+        char *tmp, *tok, *str;
+        int ret = 0;
+
+        if (field_order == NULL)
+                return 0;
+
+        reset_dimensions();
+
+        str = strdup(field_order);
+        if (str == NULL) {
+                error("Not enough memory to setup output fields");
+                return -ENOMEM;
+        }
+
+        for (tok = strtok_r(str, ", ", &tmp);
+                        tok; tok = strtok_r(NULL, ", ", &tmp)) {
+                ret = output_field_add(tok);
+                if (ret == -EINVAL) {
+                        error("Invalid --fields key: `%s'", tok);
+                        break;
+                } else if (ret == -ESRCH) {
+                        error("Unknown --fields key: `%s'", tok);
+                        break;
+                }
+        }
+
+        free(str);
+        return ret;
+}
+
+int setup_sorting(void)
+{
+        int err;
+
+        err = __setup_sorting();
+        if (err < 0)
+                return err;
+
+        if (parent_pattern != default_parent_pattern) {
+                err = sort_dimension__add("parent");
+                if (err < 0)
+                        return err;
+        }
+
+        reset_dimensions();
+
+        /*
+         * perf diff doesn't use default hpp output fields.
+         */
+        if (sort__mode != SORT_MODE__DIFF)
+                perf_hpp__init();
+
+        err = __setup_output_field();
+        if (err < 0)
+                return err;
+
+        /* copy sort keys to output fields */
+        perf_hpp__setup_output_field();
+        /* and then copy output fields to sort keys */
+        perf_hpp__append_sort_keys();
+
+        return 0;
+}
+
+void reset_output_field(void)
+{
+        sort__need_collapse = 0;
+        sort__has_parent = 0;
+        sort__has_sym = 0;
+        sort__has_dso = 0;
+
+        field_order = NULL;
+        sort_order = NULL;
+
+        reset_dimensions();
+        perf_hpp__reset_output_field();
 }
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 43e5ff42a609..5bf0098d6b06 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -20,11 +20,12 @@
 
 #include "parse-options.h"
 #include "parse-events.h"
-
+#include "hist.h"
 #include "thread.h"
 
 extern regex_t parent_regex;
 extern const char *sort_order;
+extern const char *field_order;
 extern const char default_parent_pattern[];
 extern const char *parent_pattern;
 extern const char default_sort_order[];
@@ -81,6 +82,7 @@ struct hist_entry {
                 struct list_head head;
         } pairs;
         struct he_stat          stat;
+        struct he_stat          *stat_acc;
         struct map_symbol       ms;
         struct thread           *thread;
         struct comm             *comm;
@@ -129,10 +131,27 @@ static inline void hist_entry__add_pair(struct hist_entry *pair,
         list_add_tail(&pair->pairs.node, &he->pairs.head);
 }
 
+static inline float hist_entry__get_percent_limit(struct hist_entry *he)
+{
+        u64 period = he->stat.period;
+        u64 total_period = hists__total_period(he->hists);
+
+        if (unlikely(total_period == 0))
+                return 0;
+
+        if (symbol_conf.cumulate_callchain)
+                period = he->stat_acc->period;
+
+        return period * 100.0 / total_period;
+}
+
+
 enum sort_mode {
         SORT_MODE__NORMAL,
         SORT_MODE__BRANCH,
         SORT_MODE__MEMORY,
+        SORT_MODE__TOP,
+        SORT_MODE__DIFF,
 };
 
 enum sort_type {
@@ -179,18 +198,21 @@ struct sort_entry {
 
         int64_t (*se_cmp)(struct hist_entry *, struct hist_entry *);
         int64_t (*se_collapse)(struct hist_entry *, struct hist_entry *);
+        int64_t (*se_sort)(struct hist_entry *, struct hist_entry *);
         int     (*se_snprintf)(struct hist_entry *he, char *bf, size_t size,
                                unsigned int width);
         u8      se_width_idx;
-        bool    elide;
 };
 
 extern struct sort_entry sort_thread;
 extern struct list_head hist_entry__sort_list;
 
 int setup_sorting(void);
+int setup_output_field(void);
+void reset_output_field(void);
 extern int sort_dimension__add(const char *);
 void sort__setup_elide(FILE *fp);
+void perf_hpp__set_elide(int idx, bool elide);
 
 int report_parse_ignore_callees_opt(const struct option *opt, const char *arg, int unset);
 
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index ae8ccd7227cf..5667fc3e39cf 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -1,7 +1,7 @@
 #ifndef __PERF_STATS_H
 #define __PERF_STATS_H
 
-#include "types.h"
+#include <linux/types.h>
 
 struct stats
 {
diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index 43262b83c541..6a0a13d07a28 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -17,7 +17,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
-#include <linux/bitops.h>
+#include <linux/bitmap.h>
 
 #include "perf.h"
 #include "svghelper.h"
diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
index f7b4d6e699ea..e3aff5332e30 100644
--- a/tools/perf/util/svghelper.h
+++ b/tools/perf/util/svghelper.h
@@ -1,7 +1,7 @@
 #ifndef __PERF_SVGHELPER_H
 #define __PERF_SVGHELPER_H
 
-#include "types.h"
+#include <linux/types.h>
 
 extern void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end);
 extern void svg_box(int Yslot, u64 start, u64 end, const char *type);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 95e249779931..7b9096f29cdb 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -29,11 +29,12 @@ int vmlinux_path__nr_entries;
 char **vmlinux_path;
 
 struct symbol_conf symbol_conf = {
-        .use_modules      = true,
-        .try_vmlinux_path = true,
-        .annotate_src     = true,
-        .demangle         = true,
-        .symfs            = "",
+        .use_modules            = true,
+        .try_vmlinux_path       = true,
+        .annotate_src           = true,
+        .demangle               = true,
+        .cumulate_callchain     = true,
+        .symfs                  = "",
 };
 
 static enum dso_binary_type binary_type_symtab[] = {
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 501e4e722e8e..615c752dd767 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -12,6 +12,7 @@
 #include <byteswap.h>
 #include <libgen.h>
 #include "build-id.h"
+#include "event.h"
 
 #ifdef HAVE_LIBELF_SUPPORT
 #include <libelf.h>
@@ -108,6 +109,7 @@ struct symbol_conf {
                         show_nr_samples,
                         show_total_period,
                         use_callchain,
+                        cumulate_callchain,
                         exclude_other,
                         show_cpu_utilization,
                         initialized,
@@ -115,7 +117,8 @@ struct symbol_conf {
                         annotate_asm_raw,
                         annotate_src,
                         event_group,
-                        demangle;
+                        demangle,
+                        filter_relative;
         const char      *vmlinux_name,
                         *kallsyms_name,
                         *source_prefix,
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 3ce0498bdae6..2fde0d5e40b5 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -8,6 +8,22 @@
 #include "debug.h"
 #include "comm.h"
 
+int thread__init_map_groups(struct thread *thread, struct machine *machine)
+{
+        struct thread *leader;
+        pid_t pid = thread->pid_;
+
+        if (pid == thread->tid) {
+                thread->mg = map_groups__new();
+        } else {
+                leader = machine__findnew_thread(machine, pid, pid);
+                if (leader)
+                        thread->mg = map_groups__get(leader->mg);
+        }
+
+        return thread->mg ? 0 : -1;
+}
+
 struct thread *thread__new(pid_t pid, pid_t tid)
 {
         char *comm_str;
@@ -15,7 +31,6 @@ struct thread *thread__new(pid_t pid, pid_t tid)
         struct thread *thread = zalloc(sizeof(*thread));
 
         if (thread != NULL) {
-                map_groups__init(&thread->mg);
                 thread->pid_ = pid;
                 thread->tid = tid;
                 thread->ppid = -1;
@@ -45,7 +60,8 @@ void thread__delete(struct thread *thread)
 {
         struct comm *comm, *tmp;
 
-        map_groups__exit(&thread->mg);
+        map_groups__put(thread->mg);
+        thread->mg = NULL;
         list_for_each_entry_safe(comm, tmp, &thread->comm_list, list) {
                 list_del(&comm->list);
                 comm__free(comm);
@@ -111,18 +127,35 @@ int thread__comm_len(struct thread *thread)
 size_t thread__fprintf(struct thread *thread, FILE *fp)
 {
         return fprintf(fp, "Thread %d %s\n", thread->tid, thread__comm_str(thread)) +
-               map_groups__fprintf(&thread->mg, verbose, fp);
+               map_groups__fprintf(thread->mg, verbose, fp);
 }
 
 void thread__insert_map(struct thread *thread, struct map *map)
 {
-        map_groups__fixup_overlappings(&thread->mg, map, verbose, stderr);
-        map_groups__insert(&thread->mg, map);
+        map_groups__fixup_overlappings(thread->mg, map, verbose, stderr);
+        map_groups__insert(thread->mg, map);
+}
+
+static int thread__clone_map_groups(struct thread *thread,
+                                    struct thread *parent)
+{
+        int i;
+
+        /* This is new thread, we share map groups for process. */
+        if (thread->pid_ == parent->pid_)
+                return 0;
+
+        /* But this one is new process, copy maps. */
+        for (i = 0; i < MAP__NR_TYPES; ++i)
+                if (map_groups__clone(thread->mg, parent->mg, i) < 0)
+                        return -ENOMEM;
+
+        return 0;
 }
 
 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
 {
-        int i, err;
+        int err;
 
         if (parent->comm_set) {
                 const char *comm = thread__comm_str(parent);
@@ -134,13 +167,8 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
                 thread->comm_set = true;
         }
 
-        for (i = 0; i < MAP__NR_TYPES; ++i)
-                if (map_groups__clone(&thread->mg, &parent->mg, i) < 0)
-                        return -ENOMEM;
-
         thread->ppid = parent->tid;
-
-        return 0;
+        return thread__clone_map_groups(thread, parent);
 }
 
 void thread__find_cpumode_addr_location(struct thread *thread,
diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h
index 9b29f085aede..3c0c2724f82c 100644
--- a/tools/perf/util/thread.h
+++ b/tools/perf/util/thread.h
@@ -13,7 +13,7 @@ struct thread {
                 struct rb_node   rb_node;
                 struct list_head node;
         };
-        struct map_groups       mg;
+        struct map_groups       *mg;
         pid_t                   pid_; /* Not all tools update this */
         pid_t                   tid;
         pid_t                   ppid;
@@ -30,6 +30,7 @@ struct machine;
 struct comm;
 
 struct thread *thread__new(pid_t pid, pid_t tid);
+int thread__init_map_groups(struct thread *thread, struct machine *machine);
 void thread__delete(struct thread *thread);
 static inline void thread__exited(struct thread *thread)
 {
diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h
index dab14d0ad3d0..f92c37abb0a8 100644
--- a/tools/perf/util/top.h
+++ b/tools/perf/util/top.h
@@ -2,7 +2,7 @@
 #define __PERF_TOP_H 1
 
 #include "tool.h"
-#include "types.h"
+#include <linux/types.h>
 #include <stddef.h>
 #include <stdbool.h>
 #include <termios.h>
diff --git a/tools/perf/util/types.h b/tools/perf/util/types.h
deleted file mode 100644
index c51fa6b70a28..000000000000
--- a/tools/perf/util/types.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef __PERF_TYPES_H
-#define __PERF_TYPES_H
-
-#include <stdint.h>
-
-/*
- * We define u64 as uint64_t for every architecture
- * so that we can print it with "%"PRIx64 without getting warnings.
- */
-typedef uint64_t           u64;
-typedef int64_t            s64;
-typedef unsigned int       u32;
-typedef signed int         s32;
-typedef unsigned short     u16;
-typedef signed short       s16;
-typedef unsigned char      u8;
-typedef signed char        s8;
-
-union u64_swap {
-        u64 val64;
-        u32 val32[2];
-};
-
-#endif /* __PERF_TYPES_H */
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index 67db73ec3dab..5ec80a575b50 100644
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@@ -7,7 +7,7 @@
 #include "unwind-libdw.h"
 #include "machine.h"
 #include "thread.h"
-#include "types.h"
+#include <linux/types.h>
 #include "event.h"
 #include "perf_regs.h"
 
diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h
index b031316f221a..f03061260b4e 100644
--- a/tools/perf/util/unwind.h
+++ b/tools/perf/util/unwind.h
@@ -1,7 +1,7 @@
 #ifndef __UNWIND_H
 #define __UNWIND_H
 
-#include "types.h"
+#include <linux/types.h>
 #include "event.h"
 #include "symbol.h"
 
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 9f66549562bd..7fff6be07f07 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -166,6 +166,8 @@ static ssize_t ion(bool is_read, int fd, void *buf, size_t n)
                 ssize_t ret = is_read ? read(fd, buf, left) :
                                         write(fd, buf, left);
 
+                if (ret < 0 && errno == EINTR)
+                        continue;
                 if (ret <= 0)
                         return ret;
 
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 6995d66f225c..b03da44e94e4 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -69,7 +69,7 @@
 #include <sys/ioctl.h>
 #include <inttypes.h>
 #include <linux/magic.h>
-#include "types.h"
+#include <linux/types.h>
 #include <sys/ttydefaults.h>
 #include <api/fs/debugfs.h>
 #include <termios.h>
diff --git a/tools/perf/util/values.h b/tools/perf/util/values.h
index 2fa967e1a88a..b21a80c6cf8d 100644
--- a/tools/perf/util/values.h
+++ b/tools/perf/util/values.h
@@ -1,7 +1,7 @@
 #ifndef __PERF_VALUES_H
 #define __PERF_VALUES_H
 
-#include "types.h"
+#include <linux/types.h>
 
 struct perf_read_values {
         int threads;