Merge branch 'perf/core' of git://github.com/acmel/linux into perf/core

35 files changed, 2124 insertions, 804 deletions

diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
index 0102d83600db..fe6762ed56bd 100644
--- a/tools/perf/Documentation/perf-annotate.txt
+++ b/tools/perf/Documentation/perf-annotate.txt
@@ -73,8 +73,7 @@ OPTIONS
         CPUs.
 
 --asm-raw::
-        Show raw instruction encoding of assembly instructions. They
-        are displayed by default, disable with --no-asm-raw.
+        Show raw instruction encoding of assembly instructions.
 
 --source::
         Interleave source code with assembly code. Enabled by default,
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 6349b6c0e3ec..212f24d672e1 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -137,6 +137,21 @@ OPTIONS
 -M::
 --disassembler-style=:: Set disassembler style for objdump.
 
+--source::
+        Interleave source code with assembly code. Enabled by default,
+        disable with --no-source.
+
+--asm-raw::
+        Show raw instruction encoding of assembly instructions.
+
+--show-total-period:: Show a column with the sum of periods.
+
+-I::
+--show-info::
+        Display extended information about the perf.data file. This adds
+        information which may be very large and thus may clutter the display.
+        It currently includes: cpu and numa topology of the host system.
+
 SEE ALSO
 --------
-linkperf:perf-stat[1]
+linkperf:perf-stat[1], linkperf:perf-annotate[1]
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index db017867d9e8..dec87ecb530e 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -188,6 +188,13 @@ OPTIONS
         CPUs are specified with -: 0-2. Default is to report samples on all
         CPUs.
 
+-I::
+--show-info::
+        Display extended information about the perf.data file. This adds
+        information which may be very large and thus may clutter the display.
+        It currently includes: cpu and numa topology of the host system.
+        It can only be used with the perf script report mode.
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-script-perl[1],
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index f6eb1cdafb77..b1a5bbbfebef 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -106,6 +106,51 @@ Default is to monitor all CPUS.
 --zero::
         Zero history across display updates.
 
+-s::
+--sort::
+        Sort by key(s): pid, comm, dso, symbol, parent
+
+-n::
+--show-nr-samples::
+        Show a column with the number of samples.
+
+--show-total-period::
+        Show a column with the sum of periods.
+
+--dsos::
+        Only consider symbols in these dsos.
+
+--comms::
+        Only consider symbols in these comms.
+
+--symbols::
+        Only consider these symbols.
+
+-M::
+--disassembler-style=:: Set disassembler style for objdump.
+
+--source::
+        Interleave source code with assembly code. Enabled by default,
+        disable with --no-source.
+
+--asm-raw::
+        Show raw instruction encoding of assembly instructions.
+
+-G [type,min,order]::
+--call-graph::
+        Display call chains using type, min percent threshold and order.
+        type can be either:
+        - flat: single column, linear exposure of call chains.
+        - graph: use a graph tree, displaying absolute overhead rates.
+        - fractal: like graph, but displays relative rates. Each branch of
+                 the tree is considered as a new profiled object.
+
+        order can be either:
+        - callee: callee based call graph.
+        - caller: inverted caller based call graph.
+
+        Default: fractal,0.5,callee.
+
 INTERACTIVE PROMPTING KEYS
 --------------------------
 
@@ -130,9 +175,6 @@ INTERACTIVE PROMPTING KEYS
 [S]::
         Stop annotation, return to full profile display.
 
-[w]::
-        Toggle between weighted sum and individual count[E]r profile.
-
 [z]::
         Toggle event count zeroing across display updates.
 
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index e9d5c271db69..37fe93019bc6 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -466,7 +466,6 @@ else
                 LIB_OBJS += $(OUTPUT)util/ui/browsers/annotate.o
                 LIB_OBJS += $(OUTPUT)util/ui/browsers/hists.o
                 LIB_OBJS += $(OUTPUT)util/ui/browsers/map.o
-                LIB_OBJS += $(OUTPUT)util/ui/browsers/top.o
                 LIB_OBJS += $(OUTPUT)util/ui/helpline.o
                 LIB_OBJS += $(OUTPUT)util/ui/progress.o
                 LIB_OBJS += $(OUTPUT)util/ui/util.o
@@ -729,9 +728,6 @@ $(OUTPUT)util/ui/browser.o: util/ui/browser.c $(OUTPUT)PERF-CFLAGS
 $(OUTPUT)util/ui/browsers/annotate.o: util/ui/browsers/annotate.c $(OUTPUT)PERF-CFLAGS
         $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
 
-$(OUTPUT)util/ui/browsers/top.o: util/ui/browsers/top.c $(OUTPUT)PERF-CFLAGS
-        $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
-
 $(OUTPUT)util/ui/browsers/hists.o: util/ui/browsers/hists.c $(OUTPUT)PERF-CFLAGS
         $(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
 
diff --git a/tools/perf/arch/powerpc/Makefile b/tools/perf/arch/powerpc/Makefile
index 15130b50dfe3..744e629797be 100644
--- a/tools/perf/arch/powerpc/Makefile
+++ b/tools/perf/arch/powerpc/Makefile
@@ -2,3 +2,4 @@ ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
 endif
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o
diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
new file mode 100644
index 000000000000..eba80c292945
--- /dev/null
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -0,0 +1,36 @@
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../util/header.h"
+
+#define __stringify_1(x)        #x
+#define __stringify(x)          __stringify_1(x)
+
+#define mfspr(rn)       ({unsigned long rval; \
+                         asm volatile("mfspr %0," __stringify(rn) \
+                                      : "=r" (rval)); rval; })
+
+#define SPRN_PVR        0x11F   /* Processor Version Register */
+#define PVR_VER(pvr)    (((pvr) >>  16) & 0xFFFF) /* Version field */
+#define PVR_REV(pvr)    (((pvr) >>   0) & 0xFFFF) /* Revison field */
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+        unsigned long pvr;
+        int nb;
+
+        pvr = mfspr(SPRN_PVR);
+
+        nb = snprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
+
+        /* look for end marker to ensure the entire data fit */
+        if (strchr(buffer, '$')) {
+                buffer[nb-1] = '\0';
+                return 0;
+        }
+        return -1;
+}
diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile
index 15130b50dfe3..744e629797be 100644
--- a/tools/perf/arch/x86/Makefile
+++ b/tools/perf/arch/x86/Makefile
@@ -2,3 +2,4 @@ ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
 endif
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o
diff --git a/tools/perf/arch/x86/util/header.c b/tools/perf/arch/x86/util/header.c
new file mode 100644
index 000000000000..f94006068d2b
--- /dev/null
+++ b/tools/perf/arch/x86/util/header.c
@@ -0,0 +1,59 @@
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../util/header.h"
+
+static inline void
+cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
+      unsigned int *d)
+{
+        __asm__ __volatile__ (".byte 0x53\n\tcpuid\n\t"
+                              "movl %%ebx, %%esi\n\t.byte 0x5b"
+                        : "=a" (*a),
+                        "=S" (*b),
+                        "=c" (*c),
+                        "=d" (*d)
+                        : "a" (op));
+}
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+        unsigned int a, b, c, d, lvl;
+        int family = -1, model = -1, step = -1;
+        int nb;
+        char vendor[16];
+
+        cpuid(0, &lvl, &b, &c, &d);
+        strncpy(&vendor[0], (char *)(&b), 4);
+        strncpy(&vendor[4], (char *)(&d), 4);
+        strncpy(&vendor[8], (char *)(&c), 4);
+        vendor[12] = '\0';
+
+        if (lvl >= 1) {
+                cpuid(1, &a, &b, &c, &d);
+
+                family = (a >> 8) & 0xf;  /* bits 11 - 8 */
+                model  = (a >> 4) & 0xf;  /* Bits  7 - 4 */
+                step   = a & 0xf;
+
+                /* extended family */
+                if (family == 0xf)
+                        family += (a >> 20) & 0xff;
+
+                /* extended model */
+                if (family >= 0x6)
+                        model += ((a >> 16) & 0xf) << 4;
+        }
+        nb = snprintf(buffer, sz, "%s,%u,%u,%u$", vendor, family, model, step);
+
+        /* look for end marker to ensure the entire data fit */
+        if (strchr(buffer, '$')) {
+                buffer[nb-1] = '\0';
+                return 0;
+        }
+        return -1;
+}
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index cf68819f7453..3ea764a78053 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -114,7 +114,8 @@ static int hist_entry__tty_annotate(struct hist_entry *he, int evidx)
                                     print_line, full_paths, 0, 0);
 }
 
-static void hists__find_annotations(struct hists *self, int evidx)
+static void hists__find_annotations(struct hists *self, int evidx,
+                                    int nr_events)
 {
         struct rb_node *nd = rb_first(&self->entries), *next;
         int key = KEY_RIGHT;
@@ -137,7 +138,8 @@ find_next:
                 }
 
                 if (use_browser > 0) {
-                        key = hist_entry__tui_annotate(he, evidx);
+                        key = hist_entry__tui_annotate(he, evidx, nr_events,
+                                                       NULL, NULL, 0);
                         switch (key) {
                         case KEY_RIGHT:
                                 next = rb_next(nd);
@@ -215,7 +217,8 @@ static int __cmd_annotate(void)
                         total_nr_samples += nr_samples;
                         hists__collapse_resort(hists);
                         hists__output_resort(hists);
-                        hists__find_annotations(hists, pos->idx);
+                        hists__find_annotations(hists, pos->idx,
+                                                session->evlist->nr_entries);
                 }
         }
 
@@ -269,9 +272,9 @@ static const struct option options[] = {
         OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
                    "Look for files with symbols relative to this directory"),
-        OPT_BOOLEAN('0', "source", &symbol_conf.annotate_src,
+        OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
                     "Interleave source code with assembly code (default)"),
-        OPT_BOOLEAN('0', "asm-raw", &symbol_conf.annotate_asm_raw,
+        OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
                     "Display raw encoding of assembly instructions (default)"),
         OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index e8219990f8b8..b39f3a1ee7dc 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -162,7 +162,7 @@ static int __cmd_diff(void)
 
         hists__match(&session[0]->hists, &session[1]->hists);
         hists__fprintf(&session[1]->hists, &session[0]->hists,
-                       show_displacement, stdout);
+                       show_displacement, true, 0, 0, stdout);
 out_delete:
         for (i = 0; i < 2; ++i)
                 perf_session__delete(session[i]);
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index dd6467872f60..f82480fa7f27 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -529,6 +529,19 @@ static int __cmd_record(int argc, const char **argv)
         if (have_tracepoints(&evsel_list->entries))
                 perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 
+        perf_header__set_feat(&session->header, HEADER_HOSTNAME);
+        perf_header__set_feat(&session->header, HEADER_OSRELEASE);
+        perf_header__set_feat(&session->header, HEADER_ARCH);
+        perf_header__set_feat(&session->header, HEADER_CPUDESC);
+        perf_header__set_feat(&session->header, HEADER_NRCPUS);
+        perf_header__set_feat(&session->header, HEADER_EVENT_DESC);
+        perf_header__set_feat(&session->header, HEADER_CMDLINE);
+        perf_header__set_feat(&session->header, HEADER_VERSION);
+        perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
+        perf_header__set_feat(&session->header, HEADER_TOTAL_MEM);
+        perf_header__set_feat(&session->header, HEADER_NUMA_TOPOLOGY);
+        perf_header__set_feat(&session->header, HEADER_CPUID);
+
         /* 512 kiB: default amount of unprivileged mlocked memory */
         if (mmap_pages == UINT_MAX)
                 mmap_pages = (512 * 1024) / page_size;
@@ -800,6 +813,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
         int err = -ENOMEM;
         struct perf_evsel *pos;
 
+        perf_header__set_cmdline(argc, argv);
+
         evsel_list = perf_evlist__new(NULL, NULL);
         if (evsel_list == NULL)
                 return -ENOMEM;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 3d58334909a5..4d7c8340c326 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -40,6 +40,7 @@ static char		const *input_name = "perf.data";
 static bool             force, use_tui, use_stdio;
 static bool             hide_unresolved;
 static bool             dont_use_callchains;
+static bool             show_full_info;
 
 static bool             show_threads;
 static struct perf_read_values  show_threads_values;
@@ -232,7 +233,7 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
                 const char *evname = event_name(pos);
 
                 hists__fprintf_nr_sample_events(hists, evname, stdout);
-                hists__fprintf(hists, NULL, false, stdout);
+                hists__fprintf(hists, NULL, false, true, 0, 0, stdout);
                 fprintf(stdout, "\n\n");
         }
 
@@ -273,6 +274,9 @@ static int __cmd_report(void)
                         goto out_delete;
         }
 
+        if (use_browser <= 0)
+                perf_session__fprintf_info(session, stdout, show_full_info);
+
         if (show_threads)
                 perf_read_values_init(&show_threads_values);
 
@@ -327,9 +331,10 @@ static int __cmd_report(void)
                 goto out_delete;
         }
 
-        if (use_browser > 0)
-                perf_evlist__tui_browse_hists(session->evlist, help);
-        else
+        if (use_browser > 0) {
+                perf_evlist__tui_browse_hists(session->evlist, help,
+                                              NULL, NULL, 0);
+        } else
                 perf_evlist__tty_browse_hists(session->evlist, help);
 
 out_delete:
@@ -484,8 +489,16 @@ static const struct option options[] = {
         OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
                     "Look for files with symbols relative to this directory"),
         OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
+        OPT_BOOLEAN('I', "show-info", &show_full_info,
+                    "Display extended information about perf.data file"),
+        OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
+                    "Interleave source code with assembly code (default)"),
+        OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
+                    "Display raw encoding of assembly instructions (default)"),
         OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
                    "Specify disassembler style (e.g. -M intel for intel syntax)"),
+        OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
+                    "Show a column with the sum of periods"),
         OPT_END()
 };
 
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 09024ec2ab2e..2f62a2952269 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -22,6 +22,7 @@ static u64			last_timestamp;
 static u64                      nr_unordered;
 extern const struct option      record_options[];
 static bool                     no_callchain;
+static bool                     show_full_info;
 static const char               *cpu_list;
 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 
@@ -1083,7 +1084,8 @@ static const struct option options[] = {
                      "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr",
                      parse_output_fields),
         OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
-
+        OPT_BOOLEAN('I', "show-info", &show_full_info,
+                    "display extended information from perf.data file"),
         OPT_END()
 };
 
@@ -1268,6 +1270,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
                         return -1;
         }
 
+        perf_session__fprintf_info(session, stdout, show_full_info);
+
         if (!no_callchain)
                 symbol_conf.use_callchain = true;
         else
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 5ede7d7c9239..c5aebf6eb746 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -5,6 +5,7 @@
  * any workload, CPU or specific PID.
  *
  * Copyright (C) 2008, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
+ *               2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
  *
  * Improvements and fixes by:
  *
@@ -36,6 +37,7 @@
 #include "util/parse-events.h"
 #include "util/cpumap.h"
 #include "util/xyarray.h"
+#include "util/sort.h"
 
 #include "util/debug.h"
 
@@ -65,12 +67,8 @@
 static struct perf_top top = {
         .count_filter           = 5,
         .delay_secs             = 2,
-        .display_weighted       = -1,
         .target_pid             = -1,
         .target_tid             = -1,
-        .active_symbols         = LIST_HEAD_INIT(top.active_symbols),
-        .active_symbols_lock    = PTHREAD_MUTEX_INITIALIZER,
-        .active_symbols_cond    = PTHREAD_COND_INITIALIZER,
         .freq                   = 1000, /* 1 KHz */
 };
 
@@ -78,6 +76,12 @@ static bool			system_wide			=  false;
 
 static bool                     use_tui, use_stdio;
 
+static bool                     sort_has_symbols;
+
+static bool                     dont_use_callchains;
+static char                     callchain_default_opt[]         = "fractal,0.5,callee";
+
+
 static int                      default_interval                =      0;
 
 static bool                     kptr_restrict_warned;
@@ -85,7 +89,6 @@ static bool			vmlinux_warned;
 static bool                     inherit                         =  false;
 static int                      realtime_prio                   =      0;
 static bool                     group                           =  false;
-static unsigned int             page_size;
 static unsigned int             mmap_pages                      =    128;
 
 static bool                     dump_symtab                     =  false;
@@ -93,7 +96,6 @@ static bool			dump_symtab                     =  false;
 static struct winsize           winsize;
 
 static const char               *sym_filter                     =   NULL;
-struct sym_entry                *sym_filter_entry_sched         =   NULL;
 static int                      sym_pcnt_filter                 =      5;
 
 /*
@@ -136,18 +138,18 @@ static void sig_winch_handler(int sig __used)
         update_print_entries(&winsize);
 }
 
-static int parse_source(struct sym_entry *syme)
+static int parse_source(struct hist_entry *he)
 {
         struct symbol *sym;
         struct annotation *notes;
         struct map *map;
         int err = -1;
 
-        if (!syme)
+        if (!he || !he->ms.sym)
                 return -1;
 
-        sym = sym_entry__symbol(syme);
-        map = syme->map;
+        sym = he->ms.sym;
+        map = he->ms.map;
 
         /*
          * We can't annotate with just /proc/kallsyms
@@ -175,53 +177,62 @@ static int parse_source(struct sym_entry *syme)
                 return err;
         }
 
-        err = symbol__annotate(sym, syme->map, 0);
+        err = symbol__annotate(sym, map, 0);
         if (err == 0) {
 out_assign:
-                top.sym_filter_entry = syme;
+                top.sym_filter_entry = he;
         }
 
         pthread_mutex_unlock(&notes->lock);
         return err;
 }
 
-static void __zero_source_counters(struct sym_entry *syme)
+static void __zero_source_counters(struct hist_entry *he)
 {
-        struct symbol *sym = sym_entry__symbol(syme);
+        struct symbol *sym = he->ms.sym;
         symbol__annotate_zero_histograms(sym);
 }
 
-static void record_precise_ip(struct sym_entry *syme, struct map *map,
-                              int counter, u64 ip)
+static void record_precise_ip(struct hist_entry *he, int counter, u64 ip)
 {
         struct annotation *notes;
         struct symbol *sym;
 
-        if (syme != top.sym_filter_entry)
+        if (he == NULL || he->ms.sym == NULL ||
+            (he != top.sym_filter_entry && use_browser != 1))
                 return;
 
-        sym = sym_entry__symbol(syme);
+        sym = he->ms.sym;
         notes = symbol__annotation(sym);
 
         if (pthread_mutex_trylock(&notes->lock))
                 return;
 
-        ip = map->map_ip(map, ip);
-        symbol__inc_addr_samples(sym, map, counter, ip);
+        if (notes->src == NULL &&
+            symbol__alloc_hist(sym, top.evlist->nr_entries) < 0) {
+                pthread_mutex_unlock(&notes->lock);
+                pr_err("Not enough memory for annotating '%s' symbol!\n",
+                       sym->name);
+                sleep(1);
+                return;
+        }
+
+        ip = he->ms.map->map_ip(he->ms.map, ip);
+        symbol__inc_addr_samples(sym, he->ms.map, counter, ip);
 
         pthread_mutex_unlock(&notes->lock);
 }
 
-static void show_details(struct sym_entry *syme)
+static void show_details(struct hist_entry *he)
 {
         struct annotation *notes;
         struct symbol *symbol;
         int more;
 
-        if (!syme)
+        if (!he)
                 return;
 
-        symbol = sym_entry__symbol(syme);
+        symbol = he->ms.sym;
         notes = symbol__annotation(symbol);
 
         pthread_mutex_lock(&notes->lock);
@@ -232,7 +243,7 @@ static void show_details(struct sym_entry *syme)
         printf("Showing %s for %s\n", event_name(top.sym_evsel), symbol->name);
         printf("  Events  Pcnt (>=%d%%)\n", sym_pcnt_filter);
 
-        more = symbol__annotate_printf(symbol, syme->map, top.sym_evsel->idx,
+        more = symbol__annotate_printf(symbol, he->ms.map, top.sym_evsel->idx,
                                        0, sym_pcnt_filter, top.print_entries, 4);
         if (top.zero)
                 symbol__annotate_zero_histogram(symbol, top.sym_evsel->idx);
@@ -246,21 +257,28 @@ out_unlock:
 
 static const char               CONSOLE_CLEAR[] = "";
 
-static void __list_insert_active_sym(struct sym_entry *syme)
+static struct hist_entry *
+        perf_session__add_hist_entry(struct perf_session *session,
+                                     struct addr_location *al,
+                                     struct perf_sample *sample,
+                                     struct perf_evsel *evsel)
 {
-        list_add(&syme->node, &top.active_symbols);
+        struct hist_entry *he;
+
+        he = __hists__add_entry(&evsel->hists, al, NULL, sample->period);
+        if (he == NULL)
+                return NULL;
+
+        session->hists.stats.total_period += sample->period;
+        hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
+        return he;
 }
 
 static void print_sym_table(void)
 {
         char bf[160];
         int printed = 0;
-        struct rb_node *nd;
-        struct sym_entry *syme;
-        struct rb_root tmp = RB_ROOT;
         const int win_width = winsize.ws_col - 1;
-        int sym_width, dso_width, dso_short_width;
-        float sum_ksamples = perf_top__decay_samples(&top, &tmp);
 
         puts(CONSOLE_CLEAR);
 
@@ -276,6 +294,7 @@ static void print_sym_table(void)
                 color_fprintf(stdout, PERF_COLOR_RED, "WARNING:");
                 printf(" LOST %" PRIu64 " events, Check IO/CPU overload\n",
                        top.total_lost_warned);
+                ++printed;
         }
 
         if (top.sym_filter_entry) {
@@ -283,58 +302,13 @@ static void print_sym_table(void)
                 return;
         }
 
-        perf_top__find_widths(&top, &tmp, &dso_width, &dso_short_width,
-                              &sym_width);
-
-        if (sym_width + dso_width > winsize.ws_col - 29) {
-                dso_width = dso_short_width;
-                if (sym_width + dso_width > winsize.ws_col - 29)
-                        sym_width = winsize.ws_col - dso_width - 29;
-        }
+        hists__collapse_resort_threaded(&top.sym_evsel->hists);
+        hists__output_resort_threaded(&top.sym_evsel->hists);
+        hists__decay_entries(&top.sym_evsel->hists);
+        hists__output_recalc_col_len(&top.sym_evsel->hists, winsize.ws_row - 3);
         putchar('\n');
-        if (top.evlist->nr_entries == 1)
-                printf("             samples  pcnt");
-        else
-                printf("   weight    samples  pcnt");
-
-        if (verbose)
-                printf("         RIP       ");
-        printf(" %-*.*s DSO\n", sym_width, sym_width, "function");
-        printf("   %s    _______ _____",
-               top.evlist->nr_entries == 1 ? "      " : "______");
-        if (verbose)
-                printf(" ________________");
-        printf(" %-*.*s", sym_width, sym_width, graph_line);
-        printf(" %-*.*s", dso_width, dso_width, graph_line);
-        puts("\n");
-
-        for (nd = rb_first(&tmp); nd; nd = rb_next(nd)) {
-                struct symbol *sym;
-                double pcnt;
-
-                syme = rb_entry(nd, struct sym_entry, rb_node);
-                sym = sym_entry__symbol(syme);
-                if (++printed > top.print_entries ||
-                    (int)syme->snap_count < top.count_filter)
-                        continue;
-
-                pcnt = 100.0 - (100.0 * ((sum_ksamples - syme->snap_count) /
-                                         sum_ksamples));
-
-                if (top.evlist->nr_entries == 1 || !top.display_weighted)
-                        printf("%20.2f ", syme->weight);
-                else
-                        printf("%9.1f %10ld ", syme->weight, syme->snap_count);
-
-                percent_color_fprintf(stdout, "%4.1f%%", pcnt);
-                if (verbose)
-                        printf(" %016" PRIx64, sym->start);
-                printf(" %-*.*s", sym_width, sym_width, sym->name);
-                printf(" %-*.*s\n", dso_width, dso_width,
-                       dso_width >= syme->map->dso->long_name_len ?
-                                        syme->map->dso->long_name :
-                                        syme->map->dso->short_name);
-        }
+        hists__fprintf(&top.sym_evsel->hists, NULL, false, false,
+                       winsize.ws_row - 4 - printed, win_width, stdout);
 }
 
 static void prompt_integer(int *target, const char *msg)
@@ -372,10 +346,11 @@ static void prompt_percent(int *target, const char *msg)
                 *target = tmp;
 }
 
-static void prompt_symbol(struct sym_entry **target, const char *msg)
+static void prompt_symbol(struct hist_entry **target, const char *msg)
 {
         char *buf = malloc(0), *p;
-        struct sym_entry *syme = *target, *n, *found = NULL;
+        struct hist_entry *syme = *target, *n, *found = NULL;
+        struct rb_node *next;
         size_t dummy = 0;
 
         /* zero counters of active symbol */
@@ -392,17 +367,14 @@ static void prompt_symbol(struct sym_entry **target, const char *msg)
         if (p)
                 *p = 0;
 
-        pthread_mutex_lock(&top.active_symbols_lock);
-        syme = list_entry(top.active_symbols.next, struct sym_entry, node);
-        pthread_mutex_unlock(&top.active_symbols_lock);
-
-        list_for_each_entry_safe_from(syme, n, &top.active_symbols, node) {
-                struct symbol *sym = sym_entry__symbol(syme);
-
-                if (!strcmp(buf, sym->name)) {
-                        found = syme;
+        next = rb_first(&top.sym_evsel->hists.entries);
+        while (next) {
+                n = rb_entry(next, struct hist_entry, rb_node);
+                if (n->ms.sym && !strcmp(buf, n->ms.sym->name)) {
+                        found = n;
                         break;
                 }
+                next = rb_next(&n->rb_node);
         }
 
         if (!found) {
@@ -421,7 +393,7 @@ static void print_mapped_keys(void)
         char *name = NULL;
 
         if (top.sym_filter_entry) {
-                struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
+                struct symbol *sym = top.sym_filter_entry->ms.sym;
                 name = sym->name;
         }
 
@@ -438,9 +410,6 @@ static void print_mapped_keys(void)
         fprintf(stdout, "\t[s]     annotate symbol.                   \t(%s)\n", name?: "NULL");
         fprintf(stdout, "\t[S]     stop annotation.\n");
 
-        if (top.evlist->nr_entries > 1)
-                fprintf(stdout, "\t[w]     toggle display weighted/count[E]r. \t(%d)\n", top.display_weighted ? 1 : 0);
-
         fprintf(stdout,
                 "\t[K]     hide kernel_symbols symbols.     \t(%s)\n",
                 top.hide_kernel_symbols ? "yes" : "no");
@@ -467,8 +436,6 @@ static int key_mapped(int c)
                 case 'S':
                         return 1;
                 case 'E':
-                case 'w':
-                        return top.evlist->nr_entries > 1 ? 1 : 0;
                 default:
                         break;
         }
@@ -561,7 +528,7 @@ static void handle_keypress(int c)
                         if (!top.sym_filter_entry)
                                 break;
                         else {
-                                struct sym_entry *syme = top.sym_filter_entry;
+                                struct hist_entry *syme = top.sym_filter_entry;
 
                                 top.sym_filter_entry = NULL;
                                 __zero_source_counters(syme);
@@ -570,9 +537,6 @@ static void handle_keypress(int c)
                 case 'U':
                         top.hide_user_symbols = !top.hide_user_symbols;
                         break;
-                case 'w':
-                        top.display_weighted = ~top.display_weighted;
-                        break;
                 case 'z':
                         top.zero = !top.zero;
                         break;
@@ -581,19 +545,29 @@ static void handle_keypress(int c)
         }
 }
 
+static void perf_top__sort_new_samples(void *arg)
+{
+        struct perf_top *t = arg;
+        perf_top__reset_sample_counters(t);
+
+        if (t->evlist->selected != NULL)
+                t->sym_evsel = t->evlist->selected;
+
+        hists__collapse_resort_threaded(&t->sym_evsel->hists);
+        hists__output_resort_threaded(&t->sym_evsel->hists);
+        hists__decay_entries(&t->sym_evsel->hists);
+        hists__output_recalc_col_len(&t->sym_evsel->hists, winsize.ws_row - 3);
+}
+
 static void *display_thread_tui(void *arg __used)
 {
-        int err = 0;
-        pthread_mutex_lock(&top.active_symbols_lock);
-        while (list_empty(&top.active_symbols)) {
-                err = pthread_cond_wait(&top.active_symbols_cond,
-                                        &top.active_symbols_lock);
-                if (err)
-                        break;
-        }
-        pthread_mutex_unlock(&top.active_symbols_lock);
-        if (!err)
-                perf_top__tui_browser(&top);
+        const char *help = "For a higher level overview, try: perf top --sort comm,dso";
+
+        perf_top__sort_new_samples(&top);
+        perf_evlist__tui_browse_hists(top.evlist, help,
+                                      perf_top__sort_new_samples,
+                                      &top, top.delay_secs);
+
         exit_browser(0);
         exit(0);
         return NULL;
@@ -645,9 +619,8 @@ static const char *skip_symbols[] = {
         NULL
 };
 
-static int symbol_filter(struct map *map, struct symbol *sym)
+static int symbol_filter(struct map *map __used, struct symbol *sym)
 {
-        struct sym_entry *syme;
         const char *name = sym->name;
         int i;
 
@@ -667,16 +640,6 @@ static int symbol_filter(struct map *map, struct symbol *sym)
             strstr(name, "_text_end"))
                 return 1;
 
-        syme = symbol__priv(sym);
-        syme->map = map;
-        symbol__annotate_init(map, sym);
-
-        if (!top.sym_filter_entry && sym_filter && !strcmp(name, sym_filter)) {
-                /* schedule initial sym_filter_entry setup */
-                sym_filter_entry_sched = syme;
-                sym_filter = NULL;
-        }
-
         for (i = 0; skip_symbols[i]; i++) {
                 if (!strcmp(skip_symbols[i], name)) {
                         sym->ignore = true;
@@ -691,10 +654,11 @@ static void perf_event__process_sample(const union perf_event *event,
                                        struct perf_sample *sample,
                                        struct perf_session *session)
 {
+        struct symbol *parent = NULL;
         u64 ip = event->ip.ip;
-        struct sym_entry *syme;
         struct addr_location al;
         struct machine *machine;
+        int err;
         u8 origin = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
         ++top.samples;
@@ -783,46 +747,41 @@ static void perf_event__process_sample(const union perf_event *event,
                                 sleep(5);
                         vmlinux_warned = true;
                 }
-
-                return;
-        }
-
-        /* let's see, whether we need to install initial sym_filter_entry */
-        if (sym_filter_entry_sched) {
-                top.sym_filter_entry = sym_filter_entry_sched;
-                sym_filter_entry_sched = NULL;
-                if (parse_source(top.sym_filter_entry) < 0) {
-                        struct symbol *sym = sym_entry__symbol(top.sym_filter_entry);
-
-                        pr_err("Can't annotate %s", sym->name);
-                        if (top.sym_filter_entry->map->dso->symtab_type == SYMTAB__KALLSYMS) {
-                                pr_err(": No vmlinux file was found in the path:\n");
-                                machine__fprintf_vmlinux_path(machine, stderr);
-                        } else
-                                pr_err(".\n");
-                        exit(1);
-                }
         }
 
-        syme = symbol__priv(al.sym);
-        if (!al.sym->ignore) {
+        if (al.sym == NULL || !al.sym->ignore) {
                 struct perf_evsel *evsel;
+                struct hist_entry *he;
 
                 evsel = perf_evlist__id2evsel(top.evlist, sample->id);
                 assert(evsel != NULL);
-                syme->count[evsel->idx]++;
-                record_precise_ip(syme, al.map, evsel->idx, ip);
-                pthread_mutex_lock(&top.active_symbols_lock);
-                if (list_empty(&syme->node) || !syme->node.next) {
-                        static bool first = true;
-                        __list_insert_active_sym(syme);
-                        if (first) {
-                                pthread_cond_broadcast(&top.active_symbols_cond);
-                                first = false;
-                        }
+
+                if ((sort__has_parent || symbol_conf.use_callchain) &&
+                    sample->callchain) {
+                        err = perf_session__resolve_callchain(session, al.thread,
+                                                              sample->callchain, &parent);
+                        if (err)
+                                return;
                 }
-                pthread_mutex_unlock(&top.active_symbols_lock);
+
+                he = perf_session__add_hist_entry(session, &al, sample, evsel);
+                if (he == NULL) {
+                        pr_err("Problem incrementing symbol period, skipping event\n");
+                        return;
+                }
+
+                if (symbol_conf.use_callchain) {
+                        err = callchain_append(he->callchain, &session->callchain_cursor,
+                                               sample->period);
+                        if (err)
+                                return;
+                }
+
+                if (sort_has_symbols)
+                        record_precise_ip(he, evsel->idx, ip);
         }
+
+        return;
 }
 
 static void perf_session__mmap_read_idx(struct perf_session *self, int idx)
@@ -873,7 +832,11 @@ static void start_counters(struct perf_evlist *evlist)
                         attr->read_format |= PERF_FORMAT_ID;
                 }
 
+                if (symbol_conf.use_callchain)
+                        attr->sample_type |= PERF_SAMPLE_CALLCHAIN;
+
                 attr->mmap = 1;
+                attr->comm = 1;
                 attr->inherit = inherit;
 try_again:
                 if (perf_evsel__open(counter, top.evlist->cpus,
@@ -928,10 +891,27 @@ out_err:
         exit(0);
 }
 
+static int setup_sample_type(void)
+{
+        if (!sort_has_symbols) {
+                if (symbol_conf.use_callchain) {
+                        ui__warning("Selected -g but \"sym\" not present in --sort/-s.");
+                        return -EINVAL;
+                }
+        } else if (!dont_use_callchains && callchain_param.mode != CHAIN_NONE) {
+                if (callchain_register_param(&callchain_param) < 0) {
+                        ui__warning("Can't register callchain params.\n");
+                        return -EINVAL;
+                }
+        }
+
+        return 0;
+}
+
 static int __cmd_top(void)
 {
         pthread_t thread;
-        int ret __used;
+        int ret;
         /*
          * FIXME: perf_session__new should allow passing a O_MMAP, so that all this
          * mmap reading, etc is encapsulated in it. Use O_WRONLY for now.
@@ -940,6 +920,10 @@ static int __cmd_top(void)
         if (top.session == NULL)
                 return -ENOMEM;
 
+        ret = setup_sample_type();
+        if (ret)
+                goto out_delete;
+
         if (top.target_tid != -1)
                 perf_event__synthesize_thread_map(top.evlist->threads,
                                                   perf_event__process, top.session);
@@ -980,6 +964,90 @@ static int __cmd_top(void)
                         ret = poll(top.evlist->pollfd, top.evlist->nr_fds, 100);
         }
 
+out_delete:
+        perf_session__delete(top.session);
+        top.session = NULL;
+
+        return 0;
+}
+
+static int
+parse_callchain_opt(const struct option *opt __used, const char *arg,
+                    int unset)
+{
+        char *tok, *tok2;
+        char *endptr;
+
+        /*
+         * --no-call-graph
+         */
+        if (unset) {
+                dont_use_callchains = true;
+                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 = strtod(tok2, &endptr);
+                tok2 = strtok(NULL, ",");
+                if (!tok2)
+                        goto setup;
+        }
+
+        /* get the call chain order */
+        if (!strcmp(tok2, "caller"))
+                callchain_param.order = ORDER_CALLER;
+        else if (!strcmp(tok2, "callee"))
+                callchain_param.order = ORDER_CALLEE;
+        else
+                return -1;
+setup:
+        if (callchain_register_param(&callchain_param) < 0) {
+                fprintf(stderr, "Can't register callchain params\n");
+                return -1;
+        }
         return 0;
 }
 
@@ -1019,7 +1087,7 @@ static const struct option options[] = {
                             "put the counters into a counter group"),
         OPT_BOOLEAN('i', "inherit", &inherit,
                     "child tasks inherit counters"),
-        OPT_STRING('s', "sym-annotate", &sym_filter, "symbol name",
+        OPT_STRING(0, "sym-annotate", &sym_filter, "symbol name",
                     "symbol to annotate"),
         OPT_BOOLEAN('z', "zero", &top.zero,
                     "zero history across updates"),
@@ -1033,6 +1101,28 @@ static const struct option options[] = {
         OPT_BOOLEAN(0, "stdio", &use_stdio, "Use the stdio interface"),
         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"),
+        OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
+                    "Show a column with the number of samples"),
+        OPT_CALLBACK_DEFAULT('G', "call-graph", NULL, "output_type,min_percent, call_order",
+                     "Display callchains using output_type (graph, flat, fractal, or none), min percent threshold and callchain order. "
+                     "Default: fractal,0.5,callee", &parse_callchain_opt,
+                     callchain_default_opt),
+        OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
+                    "Show a column with the sum of periods"),
+        OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
+                   "only consider symbols in these dsos"),
+        OPT_STRING(0, "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
+                   "only consider symbols in these comms"),
+        OPT_STRING(0, "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
+                   "only consider these symbols"),
+        OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
+                    "Interleave source code with assembly code (default)"),
+        OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
+                    "Display raw encoding of assembly instructions (default)"),
+        OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
+                   "Specify disassembler style (e.g. -M intel for intel syntax)"),
         OPT_END()
 };
 
@@ -1045,18 +1135,16 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
         if (top.evlist == NULL)
                 return -ENOMEM;
 
-        page_size = sysconf(_SC_PAGE_SIZE);
+        symbol_conf.exclude_other = false;
 
         argc = parse_options(argc, argv, options, top_usage, 0);
         if (argc)
                 usage_with_options(top_usage, options);
 
-        /*
-         * XXX For now start disabled, only using TUI if explicitely asked for.
-         * Change that when handle_keys equivalent gets written, live annotation
-         * done, etc.
-         */
-        use_browser = 0;
+        if (sort_order == default_sort_order)
+                sort_order = "dso,symbol";
+
+        setup_sorting(top_usage, options);
 
         if (use_stdio)
                 use_browser = 0;
@@ -1119,13 +1207,22 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
 
         top.sym_evsel = list_entry(top.evlist->entries.next, struct perf_evsel, node);
 
-        symbol_conf.priv_size = (sizeof(struct sym_entry) + sizeof(struct annotation) +
-                                 (top.evlist->nr_entries + 1) * sizeof(unsigned long));
+        symbol_conf.priv_size = sizeof(struct annotation);
 
         symbol_conf.try_vmlinux_path = (symbol_conf.vmlinux_name == NULL);
         if (symbol__init() < 0)
                 return -1;
 
+        sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", stdout);
+        sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", stdout);
+        sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", stdout);
+
+        /*
+         * Avoid annotation data structures overhead when symbols aren't on the
+         * sort list.
+         */
+        sort_has_symbols = sort_sym.list.next != NULL;
+
         get_term_dimensions(&winsize);
         if (top.print_entries == 0) {
                 update_print_entries(&winsize);
diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h
index 4702e2443a8e..b382bd551aac 100644
--- a/tools/perf/builtin.h
+++ b/tools/perf/builtin.h
@@ -4,7 +4,6 @@
 #include "util/util.h"
 #include "util/strbuf.h"
 
-extern const char perf_version_string[];
 extern const char perf_usage_string[];
 extern const char perf_more_info_string[];
 
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index a5fc660c1f12..08b0b5e82a44 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -9,18 +9,21 @@ void get_term_dimensions(struct winsize *ws);
 #include "../../arch/x86/include/asm/unistd.h"
 #define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
+#define CPUINFO_PROC    "model name"
 #endif
 
 #if defined(__x86_64__)
 #include "../../arch/x86/include/asm/unistd.h"
 #define rmb()           asm volatile("lfence" ::: "memory")
 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
+#define CPUINFO_PROC    "model name"
 #endif
 
 #ifdef __powerpc__
 #include "../../arch/powerpc/include/asm/unistd.h"
 #define rmb()           asm volatile ("sync" ::: "memory")
 #define cpu_relax()     asm volatile ("" ::: "memory");
+#define CPUINFO_PROC    "cpu"
 #endif
 
 #ifdef __s390__
@@ -37,30 +40,35 @@ void get_term_dimensions(struct winsize *ws);
 # define rmb()          asm volatile("" ::: "memory")
 #endif
 #define cpu_relax()     asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "cpu type"
 #endif
 
 #ifdef __hppa__
 #include "../../arch/parisc/include/asm/unistd.h"
 #define rmb()           asm volatile("" ::: "memory")
 #define cpu_relax()     asm volatile("" ::: "memory");
+#define CPUINFO_PROC    "cpu"
 #endif
 
 #ifdef __sparc__
 #include "../../arch/sparc/include/asm/unistd.h"
 #define rmb()           asm volatile("":::"memory")
 #define cpu_relax()     asm volatile("":::"memory")
+#define CPUINFO_PROC    "cpu"
 #endif
 
 #ifdef __alpha__
 #include "../../arch/alpha/include/asm/unistd.h"
 #define rmb()           asm volatile("mb" ::: "memory")
 #define cpu_relax()     asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "cpu model"
 #endif
 
 #ifdef __ia64__
 #include "../../arch/ia64/include/asm/unistd.h"
 #define rmb()           asm volatile ("mf" ::: "memory")
 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
+#define CPUINFO_PROC    "model name"
 #endif
 
 #ifdef __arm__
@@ -71,6 +79,7 @@ void get_term_dimensions(struct winsize *ws);
  */
 #define rmb()           ((void(*)(void))0xffff0fa0)()
 #define cpu_relax()     asm volatile("":::"memory")
+#define CPUINFO_PROC    "Processor"
 #endif
 
 #ifdef __mips__
@@ -83,6 +92,7 @@ void get_term_dimensions(struct winsize *ws);
                                 : /* no input */                        \
                                 : "memory")
 #define cpu_relax()     asm volatile("" ::: "memory")
+#define CPUINFO_PROC    "cpu model"
 #endif
 
 #include <time.h>
@@ -171,5 +181,6 @@ struct ip_callchain {
 };
 
 extern bool perf_host, perf_guest;
+extern const char perf_version_string[];
 
 #endif
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index 6ede1286ee71..d9072523d342 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -91,13 +91,16 @@ int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
 #ifdef NO_NEWT_SUPPORT
 static inline int symbol__tui_annotate(struct symbol *sym __used,
                                        struct map *map __used,
-                                       int evidx __used, int refresh __used)
+                                       int evidx __used,
+                                       void(*timer)(void *arg) __used,
+                                       void *arg __used, int delay_secs __used)
 {
         return 0;
 }
 #else
 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
-                         int refresh);
+                         int nr_events, void(*timer)(void *arg), void *arg,
+                         int delay_secs);
 #endif
 
 extern const char       *disassembler_style;
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 72e9f4886b6d..2f6bc89027da 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -533,3 +533,9 @@ bool perf_evlist__sample_id_all(const struct perf_evlist *evlist)
         first = list_entry(evlist->entries.next, struct perf_evsel, node);
         return first->attr.sample_id_all;
 }
+
+void perf_evlist__set_selected(struct perf_evlist *evlist,
+                               struct perf_evsel *evsel)
+{
+        evlist->selected = evsel;
+}
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index f34915002745..6be71fc57794 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -25,6 +25,7 @@ struct perf_evlist {
         struct pollfd    *pollfd;
         struct thread_map *threads;
         struct cpu_map    *cpus;
+        struct perf_evsel *selected;
 };
 
 struct perf_evsel;
@@ -56,6 +57,9 @@ void perf_evlist__munmap(struct perf_evlist *evlist);
 void perf_evlist__disable(struct perf_evlist *evlist);
 void perf_evlist__enable(struct perf_evlist *evlist);
 
+void perf_evlist__set_selected(struct perf_evlist *evlist,
+                               struct perf_evsel *evsel);
+
 static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
                                          struct cpu_map *cpus,
                                          struct thread_map *threads)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index e389815078d3..b46f6e4bff3c 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -39,6 +39,7 @@ void perf_evsel__init(struct perf_evsel *evsel,
         evsel->idx         = idx;
         evsel->attr        = *attr;
         INIT_LIST_HEAD(&evsel->node);
+        hists__init(&evsel->hists);
 }
 
 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b6c1ad123ca9..f2ceb0f7d669 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <linux/list.h>
 #include <linux/kernel.h>
+#include <sys/utsname.h>
 
 #include "evlist.h"
 #include "evsel.h"
@@ -17,12 +18,19 @@
 #include "session.h"
 #include "symbol.h"
 #include "debug.h"
+#include "cpumap.h"
 
 static bool no_buildid_cache = false;
 
 static int event_count;
 static struct perf_trace_event_type *events;
 
+static u32 header_argc;
+static const char **header_argv;
+
+static int dsos__write_buildid_table(struct perf_header *header, int fd);
+static int perf_session__cache_build_ids(struct perf_session *session);
+
 int perf_header__push_event(u64 id, const char *name)
 {
         if (strlen(name) > MAX_EVENT_NAME)
@@ -110,6 +118,1020 @@ static int write_padded(int fd, const void *bf, size_t count,
         return err;
 }
 
+static int do_write_string(int fd, const char *str)
+{
+        u32 len, olen;
+        int ret;
+
+        olen = strlen(str) + 1;
+        len = ALIGN(olen, NAME_ALIGN);
+
+        /* write len, incl. \0 */
+        ret = do_write(fd, &len, sizeof(len));
+        if (ret < 0)
+                return ret;
+
+        return write_padded(fd, str, olen, len);
+}
+
+static char *do_read_string(int fd, struct perf_header *ph)
+{
+        ssize_t sz, ret;
+        u32 len;
+        char *buf;
+
+        sz = read(fd, &len, sizeof(len));
+        if (sz < (ssize_t)sizeof(len))
+                return NULL;
+
+        if (ph->needs_swap)
+                len = bswap_32(len);
+
+        buf = malloc(len);
+        if (!buf)
+                return NULL;
+
+        ret = read(fd, buf, len);
+        if (ret == (ssize_t)len) {
+                /*
+                 * strings are padded by zeroes
+                 * thus the actual strlen of buf
+                 * may be less than len
+                 */
+                return buf;
+        }
+
+        free(buf);
+        return NULL;
+}
+
+int
+perf_header__set_cmdline(int argc, const char **argv)
+{
+        int i;
+
+        header_argc = (u32)argc;
+
+        /* do not include NULL termination */
+        header_argv = calloc(argc, sizeof(char *));
+        if (!header_argv)
+                return -ENOMEM;
+
+        /*
+         * must copy argv contents because it gets moved
+         * around during option parsing
+         */
+        for (i = 0; i < argc ; i++)
+                header_argv[i] = argv[i];
+
+        return 0;
+}
+
+static int write_trace_info(int fd, struct perf_header *h __used,
+                            struct perf_evlist *evlist)
+{
+        return read_tracing_data(fd, &evlist->entries);
+}
+
+
+static int write_build_id(int fd, struct perf_header *h,
+                          struct perf_evlist *evlist __used)
+{
+        struct perf_session *session;
+        int err;
+
+        session = container_of(h, struct perf_session, header);
+
+        err = dsos__write_buildid_table(h, fd);
+        if (err < 0) {
+                pr_debug("failed to write buildid table\n");
+                return err;
+        }
+        if (!no_buildid_cache)
+                perf_session__cache_build_ids(session);
+
+        return 0;
+}
+
+static int write_hostname(int fd, struct perf_header *h __used,
+                          struct perf_evlist *evlist __used)
+{
+        struct utsname uts;
+        int ret;
+
+        ret = uname(&uts);
+        if (ret < 0)
+                return -1;
+
+        return do_write_string(fd, uts.nodename);
+}
+
+static int write_osrelease(int fd, struct perf_header *h __used,
+                           struct perf_evlist *evlist __used)
+{
+        struct utsname uts;
+        int ret;
+
+        ret = uname(&uts);
+        if (ret < 0)
+                return -1;
+
+        return do_write_string(fd, uts.release);
+}
+
+static int write_arch(int fd, struct perf_header *h __used,
+                      struct perf_evlist *evlist __used)
+{
+        struct utsname uts;
+        int ret;
+
+        ret = uname(&uts);
+        if (ret < 0)
+                return -1;
+
+        return do_write_string(fd, uts.machine);
+}
+
+static int write_version(int fd, struct perf_header *h __used,
+                         struct perf_evlist *evlist __used)
+{
+        return do_write_string(fd, perf_version_string);
+}
+
+static int write_cpudesc(int fd, struct perf_header *h __used,
+                       struct perf_evlist *evlist __used)
+{
+#ifndef CPUINFO_PROC
+#define CPUINFO_PROC NULL
+#endif
+        FILE *file;
+        char *buf = NULL;
+        char *s, *p;
+        const char *search = CPUINFO_PROC;
+        size_t len = 0;
+        int ret = -1;
+
+        if (!search)
+                return -1;
+
+        file = fopen("/proc/cpuinfo", "r");
+        if (!file)
+                return -1;
+
+        while (getline(&buf, &len, file) > 0) {
+                ret = strncmp(buf, search, strlen(search));
+                if (!ret)
+                        break;
+        }
+
+        if (ret)
+                goto done;
+
+        s = buf;
+
+        p = strchr(buf, ':');
+        if (p && *(p+1) == ' ' && *(p+2))
+                s = p + 2;
+        p = strchr(s, '\n');
+        if (p)
+                *p = '\0';
+
+        /* squash extra space characters (branding string) */
+        p = s;
+        while (*p) {
+                if (isspace(*p)) {
+                        char *r = p + 1;
+                        char *q = r;
+                        *p = ' ';
+                        while (*q && isspace(*q))
+                                q++;
+                        if (q != (p+1))
+                                while ((*r++ = *q++));
+                }
+                p++;
+        }
+        ret = do_write_string(fd, s);
+done:
+        free(buf);
+        fclose(file);
+        return ret;
+}
+
+static int write_nrcpus(int fd, struct perf_header *h __used,
+                        struct perf_evlist *evlist __used)
+{
+        long nr;
+        u32 nrc, nra;
+        int ret;
+
+        nr = sysconf(_SC_NPROCESSORS_CONF);
+        if (nr < 0)
+                return -1;
+
+        nrc = (u32)(nr & UINT_MAX);
+
+        nr = sysconf(_SC_NPROCESSORS_ONLN);
+        if (nr < 0)
+                return -1;
+
+        nra = (u32)(nr & UINT_MAX);
+
+        ret = do_write(fd, &nrc, sizeof(nrc));
+        if (ret < 0)
+                return ret;
+
+        return do_write(fd, &nra, sizeof(nra));
+}
+
+static int write_event_desc(int fd, struct perf_header *h __used,
+                            struct perf_evlist *evlist)
+{
+        struct perf_evsel *attr;
+        u32 nre = 0, nri, sz;
+        int ret;
+
+        list_for_each_entry(attr, &evlist->entries, node)
+                nre++;
+
+        /*
+         * write number of events
+         */
+        ret = do_write(fd, &nre, sizeof(nre));
+        if (ret < 0)
+                return ret;
+
+        /*
+         * size of perf_event_attr struct
+         */
+        sz = (u32)sizeof(attr->attr);
+        ret = do_write(fd, &sz, sizeof(sz));
+        if (ret < 0)
+                return ret;
+
+        list_for_each_entry(attr, &evlist->entries, node) {
+
+                ret = do_write(fd, &attr->attr, sz);
+                if (ret < 0)
+                        return ret;
+                /*
+                 * write number of unique id per event
+                 * there is one id per instance of an event
+                 *
+                 * copy into an nri to be independent of the
+                 * type of ids,
+                 */
+                nri = attr->ids;
+                ret = do_write(fd, &nri, sizeof(nri));
+                if (ret < 0)
+                        return ret;
+
+                /*
+                 * write event string as passed on cmdline
+                 */
+                ret = do_write_string(fd, attr->name);
+                if (ret < 0)
+                        return ret;
+                /*
+                 * write unique ids for this event
+                 */
+                ret = do_write(fd, attr->id, attr->ids * sizeof(u64));
+                if (ret < 0)
+                        return ret;
+        }
+        return 0;
+}
+
+static int write_cmdline(int fd, struct perf_header *h __used,
+                         struct perf_evlist *evlist __used)
+{
+        char buf[MAXPATHLEN];
+        char proc[32];
+        u32 i, n;
+        int ret;
+
+        /*
+         * actual atual path to perf binary
+         */
+        sprintf(proc, "/proc/%d/exe", getpid());
+        ret = readlink(proc, buf, sizeof(buf));
+        if (ret <= 0)
+                return -1;
+
+        /* readlink() does not add null termination */
+        buf[ret] = '\0';
+
+        /* account for binary path */
+        n = header_argc + 1;
+
+        ret = do_write(fd, &n, sizeof(n));
+        if (ret < 0)
+                return ret;
+
+        ret = do_write_string(fd, buf);
+        if (ret < 0)
+                return ret;
+
+        for (i = 0 ; i < header_argc; i++) {
+                ret = do_write_string(fd, header_argv[i]);
+                if (ret < 0)
+                        return ret;
+        }
+        return 0;
+}
+
+#define CORE_SIB_FMT \
+        "/sys/devices/system/cpu/cpu%d/topology/core_siblings_list"
+#define THRD_SIB_FMT \
+        "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list"
+
+struct cpu_topo {
+        u32 core_sib;
+        u32 thread_sib;
+        char **core_siblings;
+        char **thread_siblings;
+};
+
+static int build_cpu_topo(struct cpu_topo *tp, int cpu)
+{
+        FILE *fp;
+        char filename[MAXPATHLEN];
+        char *buf = NULL, *p;
+        size_t len = 0;
+        u32 i = 0;
+        int ret = -1;
+
+        sprintf(filename, CORE_SIB_FMT, cpu);
+        fp = fopen(filename, "r");
+        if (!fp)
+                return -1;
+
+        if (getline(&buf, &len, fp) <= 0)
+                goto done;
+
+        fclose(fp);
+
+        p = strchr(buf, '\n');
+        if (p)
+                *p = '\0';
+
+        for (i = 0; i < tp->core_sib; i++) {
+                if (!strcmp(buf, tp->core_siblings[i]))
+                        break;
+        }
+        if (i == tp->core_sib) {
+                tp->core_siblings[i] = buf;
+                tp->core_sib++;
+                buf = NULL;
+                len = 0;
+        }
+
+        sprintf(filename, THRD_SIB_FMT, cpu);
+        fp = fopen(filename, "r");
+        if (!fp)
+                goto done;
+
+        if (getline(&buf, &len, fp) <= 0)
+                goto done;
+
+        p = strchr(buf, '\n');
+        if (p)
+                *p = '\0';
+
+        for (i = 0; i < tp->thread_sib; i++) {
+                if (!strcmp(buf, tp->thread_siblings[i]))
+                        break;
+        }
+        if (i == tp->thread_sib) {
+                tp->thread_siblings[i] = buf;
+                tp->thread_sib++;
+                buf = NULL;
+        }
+        ret = 0;
+done:
+        if(fp)
+                fclose(fp);
+        free(buf);
+        return ret;
+}
+
+static void free_cpu_topo(struct cpu_topo *tp)
+{
+        u32 i;
+
+        if (!tp)
+                return;
+
+        for (i = 0 ; i < tp->core_sib; i++)
+                free(tp->core_siblings[i]);
+
+        for (i = 0 ; i < tp->thread_sib; i++)
+                free(tp->thread_siblings[i]);
+
+        free(tp);
+}
+
+static struct cpu_topo *build_cpu_topology(void)
+{
+        struct cpu_topo *tp;
+        void *addr;
+        u32 nr, i;
+        size_t sz;
+        long ncpus;
+        int ret = -1;
+
+        ncpus = sysconf(_SC_NPROCESSORS_CONF);
+        if (ncpus < 0)
+                return NULL;
+
+        nr = (u32)(ncpus & UINT_MAX);
+
+        sz = nr * sizeof(char *);
+
+        addr = calloc(1, sizeof(*tp) + 2 * sz);
+        if (!addr)
+                return NULL;
+
+        tp = addr;
+
+        addr += sizeof(*tp);
+        tp->core_siblings = addr;
+        addr += sz;
+        tp->thread_siblings = addr;
+
+        for (i = 0; i < nr; i++) {
+                ret = build_cpu_topo(tp, i);
+                if (ret < 0)
+                        break;
+        }
+        if (ret) {
+                free_cpu_topo(tp);
+                tp = NULL;
+        }
+        return tp;
+}
+
+static int write_cpu_topology(int fd, struct perf_header *h __used,
+                          struct perf_evlist *evlist __used)
+{
+        struct cpu_topo *tp;
+        u32 i;
+        int ret;
+
+        tp = build_cpu_topology();
+        if (!tp)
+                return -1;
+
+        ret = do_write(fd, &tp->core_sib, sizeof(tp->core_sib));
+        if (ret < 0)
+                goto done;
+
+        for (i = 0; i < tp->core_sib; i++) {
+                ret = do_write_string(fd, tp->core_siblings[i]);
+                if (ret < 0)
+                        goto done;
+        }
+        ret = do_write(fd, &tp->thread_sib, sizeof(tp->thread_sib));
+        if (ret < 0)
+                goto done;
+
+        for (i = 0; i < tp->thread_sib; i++) {
+                ret = do_write_string(fd, tp->thread_siblings[i]);
+                if (ret < 0)
+                        break;
+        }
+done:
+        free_cpu_topo(tp);
+        return ret;
+}
+
+
+
+static int write_total_mem(int fd, struct perf_header *h __used,
+                          struct perf_evlist *evlist __used)
+{
+        char *buf = NULL;
+        FILE *fp;
+        size_t len = 0;
+        int ret = -1, n;
+        uint64_t mem;
+
+        fp = fopen("/proc/meminfo", "r");
+        if (!fp)
+                return -1;
+
+        while (getline(&buf, &len, fp) > 0) {
+                ret = strncmp(buf, "MemTotal:", 9);
+                if (!ret)
+                        break;
+        }
+        if (!ret) {
+                n = sscanf(buf, "%*s %"PRIu64, &mem);
+                if (n == 1)
+                        ret = do_write(fd, &mem, sizeof(mem));
+        }
+        free(buf);
+        fclose(fp);
+        return ret;
+}
+
+static int write_topo_node(int fd, int node)
+{
+        char str[MAXPATHLEN];
+        char field[32];
+        char *buf = NULL, *p;
+        size_t len = 0;
+        FILE *fp;
+        u64 mem_total, mem_free, mem;
+        int ret = -1;
+
+        sprintf(str, "/sys/devices/system/node/node%d/meminfo", node);
+        fp = fopen(str, "r");
+        if (!fp)
+                return -1;
+
+        while (getline(&buf, &len, fp) > 0) {
+                /* skip over invalid lines */
+                if (!strchr(buf, ':'))
+                        continue;
+                if (sscanf(buf, "%*s %*d %s %"PRIu64, field, &mem) != 2)
+                        goto done;
+                if (!strcmp(field, "MemTotal:"))
+                        mem_total = mem;
+                if (!strcmp(field, "MemFree:"))
+                        mem_free = mem;
+        }
+
+        fclose(fp);
+
+        ret = do_write(fd, &mem_total, sizeof(u64));
+        if (ret)
+                goto done;
+
+        ret = do_write(fd, &mem_free, sizeof(u64));
+        if (ret)
+                goto done;
+
+        ret = -1;
+        sprintf(str, "/sys/devices/system/node/node%d/cpulist", node);
+
+        fp = fopen(str, "r");
+        if (!fp)
+                goto done;
+
+        if (getline(&buf, &len, fp) <= 0)
+                goto done;
+
+        p = strchr(buf, '\n');
+        if (p)
+                *p = '\0';
+
+        ret = do_write_string(fd, buf);
+done:
+        free(buf);
+        fclose(fp);
+        return ret;
+}
+
+static int write_numa_topology(int fd, struct perf_header *h __used,
+                          struct perf_evlist *evlist __used)
+{
+        char *buf = NULL;
+        size_t len = 0;
+        FILE *fp;
+        struct cpu_map *node_map = NULL;
+        char *c;
+        u32 nr, i, j;
+        int ret = -1;
+
+        fp = fopen("/sys/devices/system/node/online", "r");
+        if (!fp)
+                return -1;
+
+        if (getline(&buf, &len, fp) <= 0)
+                goto done;
+
+        c = strchr(buf, '\n');
+        if (c)
+                *c = '\0';
+
+        node_map = cpu_map__new(buf);
+        if (!node_map)
+                goto done;
+
+        nr = (u32)node_map->nr;
+
+        ret = do_write(fd, &nr, sizeof(nr));
+        if (ret < 0)
+                goto done;
+
+        for (i = 0; i < nr; i++) {
+                j = (u32)node_map->map[i];
+                ret = do_write(fd, &j, sizeof(j));
+                if (ret < 0)
+                        break;
+
+                ret = write_topo_node(fd, i);
+                if (ret < 0)
+                        break;
+        }
+done:
+        free(buf);
+        fclose(fp);
+        free(node_map);
+        return ret;
+}
+
+/*
+ * default get_cpuid(): nothing gets recorded
+ * actual implementation must be in arch/$(ARCH)/util/header.c
+ */
+int __attribute__((weak)) get_cpuid(char *buffer __used, size_t sz __used)
+{
+        return -1;
+}
+
+static int write_cpuid(int fd, struct perf_header *h __used,
+                       struct perf_evlist *evlist __used)
+{
+        char buffer[64];
+        int ret;
+
+        ret = get_cpuid(buffer, sizeof(buffer));
+        if (!ret)
+                goto write_it;
+
+        return -1;
+write_it:
+        return do_write_string(fd, buffer);
+}
+
+static void print_hostname(struct perf_header *ph, int fd, FILE *fp)
+{
+        char *str = do_read_string(fd, ph);
+        fprintf(fp, "# hostname : %s\n", str);
+        free(str);
+}
+
+static void print_osrelease(struct perf_header *ph, int fd, FILE *fp)
+{
+        char *str = do_read_string(fd, ph);
+        fprintf(fp, "# os release : %s\n", str);
+        free(str);
+}
+
+static void print_arch(struct perf_header *ph, int fd, FILE *fp)
+{
+        char *str = do_read_string(fd, ph);
+        fprintf(fp, "# arch : %s\n", str);
+        free(str);
+}
+
+static void print_cpudesc(struct perf_header *ph, int fd, FILE *fp)
+{
+        char *str = do_read_string(fd, ph);
+        fprintf(fp, "# cpudesc : %s\n", str);
+        free(str);
+}
+
+static void print_nrcpus(struct perf_header *ph, int fd, FILE *fp)
+{
+        ssize_t ret;
+        u32 nr;
+
+        ret = read(fd, &nr, sizeof(nr));
+        if (ret != (ssize_t)sizeof(nr))
+                nr = -1; /* interpreted as error */
+
+        if (ph->needs_swap)
+                nr = bswap_32(nr);
+
+        fprintf(fp, "# nrcpus online : %u\n", nr);
+
+        ret = read(fd, &nr, sizeof(nr));
+        if (ret != (ssize_t)sizeof(nr))
+                nr = -1; /* interpreted as error */
+
+        if (ph->needs_swap)
+                nr = bswap_32(nr);
+
+        fprintf(fp, "# nrcpus avail : %u\n", nr);
+}
+
+static void print_version(struct perf_header *ph, int fd, FILE *fp)
+{
+        char *str = do_read_string(fd, ph);
+        fprintf(fp, "# perf version : %s\n", str);
+        free(str);
+}
+
+static void print_cmdline(struct perf_header *ph, int fd, FILE *fp)
+{
+        ssize_t ret;
+        char *str;
+        u32 nr, i;
+
+        ret = read(fd, &nr, sizeof(nr));
+        if (ret != (ssize_t)sizeof(nr))
+                return;
+
+        if (ph->needs_swap)
+                nr = bswap_32(nr);
+
+        fprintf(fp, "# cmdline : ");
+
+        for (i = 0; i < nr; i++) {
+                str = do_read_string(fd, ph);
+                fprintf(fp, "%s ", str);
+                free(str);
+        }
+        fputc('\n', fp);
+}
+
+static void print_cpu_topology(struct perf_header *ph, int fd, FILE *fp)
+{
+        ssize_t ret;
+        u32 nr, i;
+        char *str;
+
+        ret = read(fd, &nr, sizeof(nr));
+        if (ret != (ssize_t)sizeof(nr))
+                return;
+
+        if (ph->needs_swap)
+                nr = bswap_32(nr);
+
+        for (i = 0; i < nr; i++) {
+                str = do_read_string(fd, ph);
+                fprintf(fp, "# sibling cores   : %s\n", str);
+                free(str);
+        }
+
+        ret = read(fd, &nr, sizeof(nr));
+        if (ret != (ssize_t)sizeof(nr))
+                return;
+
+        if (ph->needs_swap)
+                nr = bswap_32(nr);
+
+        for (i = 0; i < nr; i++) {
+                str = do_read_string(fd, ph);
+                fprintf(fp, "# sibling threads : %s\n", str);
+                free(str);
+        }
+}
+
+static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
+{
+        struct perf_event_attr attr;
+        uint64_t id;
+        void *buf = NULL;
+        char *str;
+        u32 nre, sz, nr, i, j, msz;
+        int ret;
+
+        /* number of events */
+        ret = read(fd, &nre, sizeof(nre));
+        if (ret != (ssize_t)sizeof(nre))
+                goto error;
+
+        if (ph->needs_swap)
+                nre = bswap_32(nre);
+
+        ret = read(fd, &sz, sizeof(sz));
+        if (ret != (ssize_t)sizeof(sz))
+                goto error;
+
+        if (ph->needs_swap)
+                sz = bswap_32(sz);
+
+        /*
+         * ensure it is at least to our ABI rev
+         */
+        if (sz < (u32)sizeof(attr))
+                goto error;
+
+        memset(&attr, 0, sizeof(attr));
+
+        /* read entire region to sync up to next field */
+        buf = malloc(sz);
+        if (!buf)
+                goto error;
+
+        msz = sizeof(attr);
+        if (sz < msz)
+                msz = sz;
+
+        for (i = 0 ; i < nre; i++) {
+
+                ret = read(fd, buf, sz);
+                if (ret != (ssize_t)sz)
+                        goto error;
+
+                if (ph->needs_swap)
+                        perf_event__attr_swap(buf);
+
+                memcpy(&attr, buf, msz);
+
+                ret = read(fd, &nr, sizeof(nr));
+                if (ret != (ssize_t)sizeof(nr))
+                        goto error;
+
+                if (ph->needs_swap)
+                        nr = bswap_32(nr);
+
+                str = do_read_string(fd, ph);
+                fprintf(fp, "# event : name = %s, ", str);
+                free(str);
+
+                fprintf(fp, "type = %d, config = 0x%"PRIx64
+                            ", config1 = 0x%"PRIx64", config2 = 0x%"PRIx64,
+                                attr.type,
+                                (u64)attr.config,
+                                (u64)attr.config1,
+                                (u64)attr.config2);
+
+                fprintf(fp, ", excl_usr = %d, excl_kern = %d",
+                                attr.exclude_user,
+                                attr.exclude_kernel);
+
+                if (nr)
+                        fprintf(fp, ", id = {");
+
+                for (j = 0 ; j < nr; j++) {
+                        ret = read(fd, &id, sizeof(id));
+                        if (ret != (ssize_t)sizeof(id))
+                                goto error;
+
+                        if (ph->needs_swap)
+                                id = bswap_64(id);
+
+                        if (j)
+                                fputc(',', fp);
+
+                        fprintf(fp, " %"PRIu64, id);
+                }
+                if (nr && j == nr)
+                        fprintf(fp, " }");
+                fputc('\n', fp);
+        }
+        free(buf);
+        return;
+error:
+        fprintf(fp, "# event desc: not available or unable to read\n");
+}
+
+static void print_total_mem(struct perf_header *h __used, int fd, FILE *fp)
+{
+        uint64_t mem;
+        ssize_t ret;
+
+        ret = read(fd, &mem, sizeof(mem));
+        if (ret != sizeof(mem))
+                goto error;
+
+        if (h->needs_swap)
+                mem = bswap_64(mem);
+
+        fprintf(fp, "# total memory : %"PRIu64" kB\n", mem);
+        return;
+error:
+        fprintf(fp, "# total memory : unknown\n");
+}
+
+static void print_numa_topology(struct perf_header *h __used, int fd, FILE *fp)
+{
+        ssize_t ret;
+        u32 nr, c, i;
+        char *str;
+        uint64_t mem_total, mem_free;
+
+        /* nr nodes */
+        ret = read(fd, &nr, sizeof(nr));
+        if (ret != (ssize_t)sizeof(nr))
+                goto error;
+
+        if (h->needs_swap)
+                nr = bswap_32(nr);
+
+        for (i = 0; i < nr; i++) {
+
+                /* node number */
+                ret = read(fd, &c, sizeof(c));
+                if (ret != (ssize_t)sizeof(c))
+                        goto error;
+
+                if (h->needs_swap)
+                        c = bswap_32(c);
+
+                ret = read(fd, &mem_total, sizeof(u64));
+                if (ret != sizeof(u64))
+                        goto error;
+
+                ret = read(fd, &mem_free, sizeof(u64));
+                if (ret != sizeof(u64))
+                        goto error;
+
+                if (h->needs_swap) {
+                        mem_total = bswap_64(mem_total);
+                        mem_free = bswap_64(mem_free);
+                }
+
+                fprintf(fp, "# node%u meminfo  : total = %"PRIu64" kB,"
+                            " free = %"PRIu64" kB\n",
+                        c,
+                        mem_total,
+                        mem_free);
+
+                str = do_read_string(fd, h);
+                fprintf(fp, "# node%u cpu list : %s\n", c, str);
+                free(str);
+        }
+        return;
+error:
+        fprintf(fp, "# numa topology : not available\n");
+}
+
+static void print_cpuid(struct perf_header *ph, int fd, FILE *fp)
+{
+        char *str = do_read_string(fd, ph);
+        fprintf(fp, "# cpuid : %s\n", str);
+        free(str);
+}
+
+struct feature_ops {
+        int (*write)(int fd, struct perf_header *h, struct perf_evlist *evlist);
+        void (*print)(struct perf_header *h, int fd, FILE *fp);
+        const char *name;
+        bool full_only;
+};
+
+#define FEAT_OPA(n, w, p) \
+        [n] = { .name = #n, .write = w, .print = p }
+#define FEAT_OPF(n, w, p) \
+        [n] = { .name = #n, .write = w, .print = p, .full_only = true }
+
+static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
+        FEAT_OPA(HEADER_TRACE_INFO, write_trace_info, NULL),
+        FEAT_OPA(HEADER_BUILD_ID, write_build_id, NULL),
+        FEAT_OPA(HEADER_HOSTNAME, write_hostname, print_hostname),
+        FEAT_OPA(HEADER_OSRELEASE, write_osrelease, print_osrelease),
+        FEAT_OPA(HEADER_VERSION, write_version, print_version),
+        FEAT_OPA(HEADER_ARCH, write_arch, print_arch),
+        FEAT_OPA(HEADER_NRCPUS, write_nrcpus, print_nrcpus),
+        FEAT_OPA(HEADER_CPUDESC, write_cpudesc, print_cpudesc),
+        FEAT_OPA(HEADER_CPUID, write_cpuid, print_cpuid),
+        FEAT_OPA(HEADER_TOTAL_MEM, write_total_mem, print_total_mem),
+        FEAT_OPA(HEADER_EVENT_DESC, write_event_desc, print_event_desc),
+        FEAT_OPA(HEADER_CMDLINE, write_cmdline, print_cmdline),
+        FEAT_OPF(HEADER_CPU_TOPOLOGY, write_cpu_topology, print_cpu_topology),
+        FEAT_OPF(HEADER_NUMA_TOPOLOGY, write_numa_topology, print_numa_topology),
+};
+
+struct header_print_data {
+        FILE *fp;
+        bool full; /* extended list of headers */
+};
+
+static int perf_file_section__fprintf_info(struct perf_file_section *section,
+                                           struct perf_header *ph,
+                                           int feat, int fd, void *data)
+{
+        struct header_print_data *hd = data;
+
+        if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
+                pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
+                                "%d, continuing...\n", section->offset, feat);
+                return 0;
+        }
+        if (feat < HEADER_TRACE_INFO || feat >= HEADER_LAST_FEATURE) {
+                pr_warning("unknown feature %d\n", feat);
+                return -1;
+        }
+        if (!feat_ops[feat].print)
+                return 0;
+
+        if (!feat_ops[feat].full_only || hd->full)
+                feat_ops[feat].print(ph, fd, hd->fp);
+        else
+                fprintf(hd->fp, "# %s info available, use -I to display\n",
+                        feat_ops[feat].name);
+
+        return 0;
+}
+
+int perf_header__fprintf_info(struct perf_session *session, FILE *fp, bool full)
+{
+        struct header_print_data hd;
+        struct perf_header *header = &session->header;
+        int fd = session->fd;
+        hd.fp = fp;
+        hd.full = full;
+
+        perf_header__process_sections(header, fd, &hd,
+                                      perf_file_section__fprintf_info);
+        return 0;
+}
+
 #define dsos__for_each_with_build_id(pos, head) \
         list_for_each_entry(pos, head, node)    \
                 if (!pos->has_build_id)         \
@@ -356,15 +1378,41 @@ static bool perf_session__read_build_ids(struct perf_session *session, bool with
         return ret;
 }
 
+static int do_write_feat(int fd, struct perf_header *h, int type,
+                         struct perf_file_section **p,
+                         struct perf_evlist *evlist)
+{
+        int err;
+        int ret = 0;
+
+        if (perf_header__has_feat(h, type)) {
+
+                (*p)->offset = lseek(fd, 0, SEEK_CUR);
+
+                err = feat_ops[type].write(fd, h, evlist);
+                if (err < 0) {
+                        pr_debug("failed to write feature %d\n", type);
+
+                        /* undo anything written */
+                        lseek(fd, (*p)->offset, SEEK_SET);
+
+                        return -1;
+                }
+                (*p)->size = lseek(fd, 0, SEEK_CUR) - (*p)->offset;
+                (*p)++;
+        }
+        return ret;
+}
+
 static int perf_header__adds_write(struct perf_header *header,
                                    struct perf_evlist *evlist, int fd)
 {
         int nr_sections;
         struct perf_session *session;
-        struct perf_file_section *feat_sec;
+        struct perf_file_section *feat_sec, *p;
         int sec_size;
         u64 sec_start;
-        int idx = 0, err;
+        int err;
 
         session = container_of(header, struct perf_session, header);
 
@@ -376,7 +1424,7 @@ static int perf_header__adds_write(struct perf_header *header,
         if (!nr_sections)
                 return 0;
 
-        feat_sec = calloc(sizeof(*feat_sec), nr_sections);
+        feat_sec = p = calloc(sizeof(*feat_sec), nr_sections);
         if (feat_sec == NULL)
                 return -ENOMEM;
 
@@ -385,36 +1433,69 @@ static int perf_header__adds_write(struct perf_header *header,
         sec_start = header->data_offset + header->data_size;
         lseek(fd, sec_start + sec_size, SEEK_SET);
 
-        if (perf_header__has_feat(header, HEADER_TRACE_INFO)) {
-                struct perf_file_section *trace_sec;
-
-                trace_sec = &feat_sec[idx++];
+        err = do_write_feat(fd, header, HEADER_TRACE_INFO, &p, evlist);
+        if (err)
+                goto out_free;
 
-                /* Write trace info */
-                trace_sec->offset = lseek(fd, 0, SEEK_CUR);
-                read_tracing_data(fd, &evlist->entries);
-                trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset;
+        err = do_write_feat(fd, header, HEADER_BUILD_ID, &p, evlist);
+        if (err) {
+                perf_header__clear_feat(header, HEADER_BUILD_ID);
+                goto out_free;
         }
 
-        if (perf_header__has_feat(header, HEADER_BUILD_ID)) {
-                struct perf_file_section *buildid_sec;
+        err = do_write_feat(fd, header, HEADER_HOSTNAME, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_HOSTNAME);
 
-                buildid_sec = &feat_sec[idx++];
+        err = do_write_feat(fd, header, HEADER_OSRELEASE, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_OSRELEASE);
 
-                /* Write build-ids */
-                buildid_sec->offset = lseek(fd, 0, SEEK_CUR);
-                err = dsos__write_buildid_table(header, fd);
-                if (err < 0) {
-                        pr_debug("failed to write buildid table\n");
-                        goto out_free;
-                }
-                buildid_sec->size = lseek(fd, 0, SEEK_CUR) -
-                                          buildid_sec->offset;
-                if (!no_buildid_cache)
-                        perf_session__cache_build_ids(session);
-        }
+        err = do_write_feat(fd, header, HEADER_VERSION, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_VERSION);
+
+        err = do_write_feat(fd, header, HEADER_ARCH, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_ARCH);
+
+        err = do_write_feat(fd, header, HEADER_NRCPUS, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_NRCPUS);
+
+        err = do_write_feat(fd, header, HEADER_CPUDESC, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_CPUDESC);
+
+        err = do_write_feat(fd, header, HEADER_CPUID, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_CPUID);
+
+        err = do_write_feat(fd, header, HEADER_TOTAL_MEM, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_TOTAL_MEM);
+
+        err = do_write_feat(fd, header, HEADER_CMDLINE, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_CMDLINE);
+
+        err = do_write_feat(fd, header, HEADER_EVENT_DESC, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_EVENT_DESC);
+
+        err = do_write_feat(fd, header, HEADER_CPU_TOPOLOGY, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_CPU_TOPOLOGY);
+
+        err = do_write_feat(fd, header, HEADER_NUMA_TOPOLOGY, &p, evlist);
+        if (err)
+                perf_header__clear_feat(header, HEADER_NUMA_TOPOLOGY);
 
         lseek(fd, sec_start, SEEK_SET);
+        /*
+         * may write more than needed due to dropped feature, but
+         * this is okay, reader will skip the mising entries
+         */
         err = do_write(fd, feat_sec, sec_size);
         if (err < 0)
                 pr_debug("failed to write feature section\n");
@@ -554,9 +1635,10 @@ static int perf_header__getbuffer64(struct perf_header *header,
 }
 
 int perf_header__process_sections(struct perf_header *header, int fd,
+                                  void *data,
                                   int (*process)(struct perf_file_section *section,
-                                                 struct perf_header *ph,
-                                                 int feat, int fd))
+                                  struct perf_header *ph,
+                                  int feat, int fd, void *data))
 {
         struct perf_file_section *feat_sec;
         int nr_sections;
@@ -584,7 +1666,7 @@ int perf_header__process_sections(struct perf_header *header, int fd,
                 if (perf_header__has_feat(header, feat)) {
                         struct perf_file_section *sec = &feat_sec[idx++];
 
-                        err = process(sec, header, feat, fd);
+                        err = process(sec, header, feat, fd, data);
                         if (err < 0)
                                 break;
                 }
@@ -796,7 +1878,7 @@ out:
 
 static int perf_file_section__process(struct perf_file_section *section,
                                       struct perf_header *ph,
-                                      int feat, int fd)
+                                      int feat, int fd, void *data __used)
 {
         if (lseek(fd, section->offset, SEEK_SET) == (off_t)-1) {
                 pr_debug("Failed to lseek to %" PRIu64 " offset for feature "
@@ -935,7 +2017,8 @@ int perf_session__read_header(struct perf_session *session, int fd)
                 event_count =  f_header.event_types.size / sizeof(struct perf_trace_event_type);
         }
 
-        perf_header__process_sections(header, fd, perf_file_section__process);
+        perf_header__process_sections(header, fd, NULL,
+                                      perf_file_section__process);
 
         lseek(fd, header->data_offset, SEEK_SET);
 
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 1886256768a1..3d5a742f4a2a 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -12,6 +12,20 @@
 enum {
         HEADER_TRACE_INFO = 1,
         HEADER_BUILD_ID,
+
+        HEADER_HOSTNAME,
+        HEADER_OSRELEASE,
+        HEADER_VERSION,
+        HEADER_ARCH,
+        HEADER_NRCPUS,
+        HEADER_CPUDESC,
+        HEADER_CPUID,
+        HEADER_TOTAL_MEM,
+        HEADER_CMDLINE,
+        HEADER_EVENT_DESC,
+        HEADER_CPU_TOPOLOGY,
+        HEADER_NUMA_TOPOLOGY,
+
         HEADER_LAST_FEATURE,
 };
 
@@ -68,10 +82,15 @@ void perf_header__set_feat(struct perf_header *header, int feat);
 void perf_header__clear_feat(struct perf_header *header, int feat);
 bool perf_header__has_feat(const struct perf_header *header, int feat);
 
+int perf_header__set_cmdline(int argc, const char **argv);
+
 int perf_header__process_sections(struct perf_header *header, int fd,
+                                  void *data,
                                   int (*process)(struct perf_file_section *section,
-                                                 struct perf_header *ph,
-                                                 int feat, int fd));
+                                  struct perf_header *ph,
+                                  int feat, int fd, void *data));
+
+int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 
 int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
                           const char *name, bool is_kallsyms);
@@ -104,4 +123,10 @@ int perf_event__synthesize_build_id(struct dso *pos, u16 misc,
                                     struct perf_session *session);
 int perf_event__process_build_id(union perf_event *event,
                                  struct perf_session *session);
+
+/*
+ * arch specific callback
+ */
+int get_cpuid(char *buffer, size_t sz);
+
 #endif /* __PERF_HEADER_H */
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 677e1da6bb3e..50c8fece1681 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -18,56 +18,56 @@ struct callchain_param	callchain_param = {
         .order  = ORDER_CALLEE
 };
 
-u16 hists__col_len(struct hists *self, enum hist_column col)
+u16 hists__col_len(struct hists *hists, enum hist_column col)
 {
-        return self->col_len[col];
+        return hists->col_len[col];
 }
 
-void hists__set_col_len(struct hists *self, enum hist_column col, u16 len)
+void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len)
 {
-        self->col_len[col] = len;
+        hists->col_len[col] = len;
 }
 
-bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len)
+bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len)
 {
-        if (len > hists__col_len(self, col)) {
-                hists__set_col_len(self, col, len);
+        if (len > hists__col_len(hists, col)) {
+                hists__set_col_len(hists, col, len);
                 return true;
         }
         return false;
 }
 
-static void hists__reset_col_len(struct hists *self)
+static void hists__reset_col_len(struct hists *hists)
 {
         enum hist_column col;
 
         for (col = 0; col < HISTC_NR_COLS; ++col)
-                hists__set_col_len(self, col, 0);
+                hists__set_col_len(hists, col, 0);
 }
 
-static void hists__calc_col_len(struct hists *self, struct hist_entry *h)
+static void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
 {
         u16 len;
 
         if (h->ms.sym)
-                hists__new_col_len(self, HISTC_SYMBOL, h->ms.sym->namelen);
+                hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen);
         else {
                 const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
 
-                if (hists__col_len(self, HISTC_DSO) < unresolved_col_width &&
+                if (hists__col_len(hists, HISTC_DSO) < unresolved_col_width &&
                     !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
                     !symbol_conf.dso_list)
-                        hists__set_col_len(self, HISTC_DSO,
+                        hists__set_col_len(hists, HISTC_DSO,
                                            unresolved_col_width);
         }
 
         len = thread__comm_len(h->thread);
-        if (hists__new_col_len(self, HISTC_COMM, len))
-                hists__set_col_len(self, HISTC_THREAD, len + 6);
+        if (hists__new_col_len(hists, HISTC_COMM, len))
+                hists__set_col_len(hists, HISTC_THREAD, len + 6);
 
         if (h->ms.map) {
                 len = dso__name_len(h->ms.map->dso);
-                hists__new_col_len(self, HISTC_DSO, len);
+                hists__new_col_len(hists, HISTC_DSO, len);
         }
 }
 
@@ -92,6 +92,41 @@ static void hist_entry__add_cpumode_period(struct hist_entry *self,
         }
 }
 
+static void hist_entry__decay(struct hist_entry *he)
+{
+        he->period = (he->period * 7) / 8;
+        he->nr_events = (he->nr_events * 7) / 8;
+}
+
+static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
+{
+        hists->stats.total_period -= he->period;
+        hist_entry__decay(he);
+        hists->stats.total_period += he->period;
+        return he->period == 0;
+}
+
+void hists__decay_entries(struct hists *hists)
+{
+        struct rb_node *next = rb_first(&hists->entries);
+        struct hist_entry *n;
+
+        while (next) {
+                n = rb_entry(next, struct hist_entry, rb_node);
+                next = rb_next(&n->rb_node);
+
+                if (hists__decay_entry(hists, n)) {
+                        rb_erase(&n->rb_node, &hists->entries);
+
+                        if (sort__need_collapse)
+                                rb_erase(&n->rb_node_in, &hists->entries_collapsed);
+
+                        hist_entry__free(n);
+                        --hists->nr_entries;
+                }
+        }
+}
+
 /*
  * histogram, sorted on item, collects periods
  */
@@ -113,11 +148,12 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
         return self;
 }
 
-static void hists__inc_nr_entries(struct hists *self, struct hist_entry *h)
+static void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h)
 {
         if (!h->filtered) {
-                hists__calc_col_len(self, h);
-                ++self->nr_entries;
+                hists__calc_col_len(hists, h);
+                ++hists->nr_entries;
+                hists->stats.total_period += h->period;
         }
 }
 
@@ -128,11 +164,11 @@ static u8 symbol__parent_filter(const struct symbol *parent)
         return 0;
 }
 
-struct hist_entry *__hists__add_entry(struct hists *self,
+struct hist_entry *__hists__add_entry(struct hists *hists,
                                       struct addr_location *al,
                                       struct symbol *sym_parent, u64 period)
 {
-        struct rb_node **p = &self->entries.rb_node;
+        struct rb_node **p;
         struct rb_node *parent = NULL;
         struct hist_entry *he;
         struct hist_entry entry = {
@@ -150,9 +186,13 @@ struct hist_entry *__hists__add_entry(struct hists *self,
         };
         int cmp;
 
+        pthread_mutex_lock(&hists->lock);
+
+        p = &hists->entries_in->rb_node;
+
         while (*p != NULL) {
                 parent = *p;
-                he = rb_entry(parent, struct hist_entry, rb_node);
+                he = rb_entry(parent, struct hist_entry, rb_node_in);
 
                 cmp = hist_entry__cmp(&entry, he);
 
@@ -170,12 +210,14 @@ struct hist_entry *__hists__add_entry(struct hists *self,
 
         he = hist_entry__new(&entry);
         if (!he)
-                return NULL;
-        rb_link_node(&he->rb_node, parent, p);
-        rb_insert_color(&he->rb_node, &self->entries);
-        hists__inc_nr_entries(self, he);
+                goto out_unlock;
+
+        rb_link_node(&he->rb_node_in, parent, p);
+        rb_insert_color(&he->rb_node_in, hists->entries_in);
 out:
         hist_entry__add_cpumode_period(he, al->cpumode, period);
+out_unlock:
+        pthread_mutex_unlock(&hists->lock);
         return he;
 }
 
@@ -222,7 +264,7 @@ void hist_entry__free(struct hist_entry *he)
  * collapse the histogram
  */
 
-static bool hists__collapse_insert_entry(struct hists *self,
+static bool hists__collapse_insert_entry(struct hists *hists,
                                          struct rb_root *root,
                                          struct hist_entry *he)
 {
@@ -233,15 +275,16 @@ static bool hists__collapse_insert_entry(struct hists *self,
 
         while (*p != NULL) {
                 parent = *p;
-                iter = rb_entry(parent, struct hist_entry, rb_node);
+                iter = rb_entry(parent, struct hist_entry, rb_node_in);
 
                 cmp = hist_entry__collapse(iter, he);
 
                 if (!cmp) {
                         iter->period += he->period;
+                        iter->nr_events += he->nr_events;
                         if (symbol_conf.use_callchain) {
-                                callchain_cursor_reset(&self->callchain_cursor);
-                                callchain_merge(&self->callchain_cursor, iter->callchain,
+                                callchain_cursor_reset(&hists->callchain_cursor);
+                                callchain_merge(&hists->callchain_cursor, iter->callchain,
                                                 he->callchain);
                         }
                         hist_entry__free(he);
@@ -254,35 +297,57 @@ static bool hists__collapse_insert_entry(struct hists *self,
                         p = &(*p)->rb_right;
         }
 
-        rb_link_node(&he->rb_node, parent, p);
-        rb_insert_color(&he->rb_node, root);
+        rb_link_node(&he->rb_node_in, parent, p);
+        rb_insert_color(&he->rb_node_in, root);
         return true;
 }
 
-void hists__collapse_resort(struct hists *self)
+static struct rb_root *hists__get_rotate_entries_in(struct hists *hists)
+{
+        struct rb_root *root;
+
+        pthread_mutex_lock(&hists->lock);
+
+        root = hists->entries_in;
+        if (++hists->entries_in > &hists->entries_in_array[1])
+                hists->entries_in = &hists->entries_in_array[0];
+
+        pthread_mutex_unlock(&hists->lock);
+
+        return root;
+}
+
+static void __hists__collapse_resort(struct hists *hists, bool threaded)
 {
-        struct rb_root tmp;
+        struct rb_root *root;
         struct rb_node *next;
         struct hist_entry *n;
 
-        if (!sort__need_collapse)
+        if (!sort__need_collapse && !threaded)
                 return;
 
-        tmp = RB_ROOT;
-        next = rb_first(&self->entries);
-        self->nr_entries = 0;
-        hists__reset_col_len(self);
+        root = hists__get_rotate_entries_in(hists);
+        next = rb_first(root);
+        hists->stats.total_period = 0;
 
         while (next) {
-                n = rb_entry(next, struct hist_entry, rb_node);
-                next = rb_next(&n->rb_node);
+                n = rb_entry(next, struct hist_entry, rb_node_in);
+                next = rb_next(&n->rb_node_in);
 
-                rb_erase(&n->rb_node, &self->entries);
-                if (hists__collapse_insert_entry(self, &tmp, n))
-                        hists__inc_nr_entries(self, n);
+                rb_erase(&n->rb_node_in, root);
+                if (hists__collapse_insert_entry(hists, &hists->entries_collapsed, n))
+                        hists__inc_nr_entries(hists, n);
         }
+}
 
-        self->entries = tmp;
+void hists__collapse_resort(struct hists *hists)
+{
+        return __hists__collapse_resort(hists, false);
+}
+
+void hists__collapse_resort_threaded(struct hists *hists)
+{
+        return __hists__collapse_resort(hists, true);
 }
 
 /*
@@ -315,31 +380,43 @@ static void __hists__insert_output_entry(struct rb_root *entries,
         rb_insert_color(&he->rb_node, entries);
 }
 
-void hists__output_resort(struct hists *self)
+static void __hists__output_resort(struct hists *hists, bool threaded)
 {
-        struct rb_root tmp;
+        struct rb_root *root;
         struct rb_node *next;
         struct hist_entry *n;
         u64 min_callchain_hits;
 
-        min_callchain_hits = self->stats.total_period * (callchain_param.min_percent / 100);
+        min_callchain_hits = hists->stats.total_period * (callchain_param.min_percent / 100);
+
+        if (sort__need_collapse || threaded)
+                root = &hists->entries_collapsed;
+        else
+                root = hists->entries_in;
 
-        tmp = RB_ROOT;
-        next = rb_first(&self->entries);
+        next = rb_first(root);
+        hists->entries = RB_ROOT;
 
-        self->nr_entries = 0;
-        hists__reset_col_len(self);
+        hists->nr_entries = 0;
+        hists__reset_col_len(hists);
 
         while (next) {
-                n = rb_entry(next, struct hist_entry, rb_node);
-                next = rb_next(&n->rb_node);
+                n = rb_entry(next, struct hist_entry, rb_node_in);
+                next = rb_next(&n->rb_node_in);
 
-                rb_erase(&n->rb_node, &self->entries);
-                __hists__insert_output_entry(&tmp, n, min_callchain_hits);
-                hists__inc_nr_entries(self, n);
+                __hists__insert_output_entry(&hists->entries, n, min_callchain_hits);
+                hists__inc_nr_entries(hists, n);
         }
+}
+
+void hists__output_resort(struct hists *hists)
+{
+        return __hists__output_resort(hists, false);
+}
 
-        self->entries = tmp;
+void hists__output_resort_threaded(struct hists *hists)
+{
+        return __hists__output_resort(hists, true);
 }
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
@@ -594,6 +671,21 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
         return ret;
 }
 
+void hists__output_recalc_col_len(struct hists *hists, int max_rows)
+{
+        struct rb_node *next = rb_first(&hists->entries);
+        struct hist_entry *n;
+        int row = 0;
+
+        hists__reset_col_len(hists);
+
+        while (next && row++ < max_rows) {
+                n = rb_entry(next, struct hist_entry, rb_node);
+                hists__calc_col_len(hists, n);
+                next = rb_next(&n->rb_node);
+        }
+}
+
 int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
                          struct hists *hists, struct hists *pair_hists,
                          bool show_displacement, long displacement,
@@ -664,6 +756,13 @@ int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
                         ret += snprintf(s + ret, size - ret, "%11" PRIu64, nr_events);
         }
 
+        if (symbol_conf.show_total_period) {
+                if (sep)
+                        ret += snprintf(s + ret, size - ret, "%c%" PRIu64, *sep, period);
+                else
+                        ret += snprintf(s + ret, size - ret, " %12" PRIu64, period);
+        }
+
         if (pair_hists) {
                 char bf[32];
                 double old_percent = 0, new_percent = 0, diff;
@@ -710,12 +809,16 @@ int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
         return ret;
 }
 
-int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+int hist_entry__fprintf(struct hist_entry *he, size_t size, struct hists *hists,
                         struct hists *pair_hists, bool show_displacement,
                         long displacement, FILE *fp, u64 session_total)
 {
         char bf[512];
-        hist_entry__snprintf(self, bf, sizeof(bf), hists, pair_hists,
+
+        if (size == 0 || size > sizeof(bf))
+                size = sizeof(bf);
+
+        hist_entry__snprintf(he, bf, size, hists, pair_hists,
                              show_displacement, displacement,
                              true, session_total);
         return fprintf(fp, "%s\n", bf);
@@ -738,8 +841,9 @@ static size_t hist_entry__fprintf_callchain(struct hist_entry *self,
                                              left_margin);
 }
 
-size_t hists__fprintf(struct hists *self, struct hists *pair,
-                      bool show_displacement, FILE *fp)
+size_t hists__fprintf(struct hists *hists, struct hists *pair,
+                      bool show_displacement, bool show_header, int max_rows,
+                      int max_cols, FILE *fp)
 {
         struct sort_entry *se;
         struct rb_node *nd;
@@ -749,9 +853,13 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
         unsigned int width;
         const char *sep = symbol_conf.field_sep;
         const char *col_width = symbol_conf.col_width_list_str;
+        int nr_rows = 0;
 
         init_rem_hits();
 
+        if (!show_header)
+                goto print_entries;
+
         fprintf(fp, "# %s", pair ? "Baseline" : "Overhead");
 
         if (symbol_conf.show_nr_samples) {
@@ -761,6 +869,13 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
                         fputs("  Samples  ", fp);
         }
 
+        if (symbol_conf.show_total_period) {
+                if (sep)
+                        ret += fprintf(fp, "%cPeriod", *sep);
+                else
+                        ret += fprintf(fp, "   Period    ");
+        }
+
         if (symbol_conf.show_cpu_utilization) {
                 if (sep) {
                         ret += fprintf(fp, "%csys", *sep);
@@ -803,18 +918,21 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
                 width = strlen(se->se_header);
                 if (symbol_conf.col_width_list_str) {
                         if (col_width) {
-                                hists__set_col_len(self, se->se_width_idx,
+                                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(self, se->se_width_idx, width))
-                        width = hists__col_len(self, se->se_width_idx);
+                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;
 
         if (sep)
                 goto print_entries;
@@ -822,6 +940,8 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
         fprintf(fp, "# ........");
         if (symbol_conf.show_nr_samples)
                 fprintf(fp, " ..........");
+        if (symbol_conf.show_total_period)
+                fprintf(fp, " ............");
         if (pair) {
                 fprintf(fp, " ..........");
                 if (show_displacement)
@@ -834,17 +954,23 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
                         continue;
 
                 fprintf(fp, "  ");
-                width = hists__col_len(self, se->se_width_idx);
+                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#\n");
+        fprintf(fp, "\n");
+        if (max_rows && ++nr_rows >= max_rows)
+                goto out;
+
+        fprintf(fp, "#\n");
+        if (max_rows && ++nr_rows >= max_rows)
+                goto out;
 
 print_entries:
-        for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
                 if (h->filtered)
@@ -858,19 +984,22 @@ print_entries:
                                 displacement = 0;
                         ++position;
                 }
-                ret += hist_entry__fprintf(h, self, pair, show_displacement,
-                                           displacement, fp, self->stats.total_period);
+                ret += hist_entry__fprintf(h, max_cols, hists, pair, show_displacement,
+                                           displacement, fp, hists->stats.total_period);
 
                 if (symbol_conf.use_callchain)
-                        ret += hist_entry__fprintf_callchain(h, self, fp,
-                                                             self->stats.total_period);
+                        ret += hist_entry__fprintf_callchain(h, hists, fp,
+                                                             hists->stats.total_period);
+                if (max_rows && ++nr_rows >= max_rows)
+                        goto out;
+
                 if (h->ms.map == NULL && verbose > 1) {
                         __map_groups__fprintf_maps(&h->thread->mg,
                                                    MAP__FUNCTION, verbose, fp);
                         fprintf(fp, "%.10s end\n", graph_dotted_line);
                 }
         }
-
+out:
         free(rem_sq_bracket);
 
         return ret;
@@ -879,7 +1008,7 @@ print_entries:
 /*
  * See hists__fprintf to match the column widths
  */
-unsigned int hists__sort_list_width(struct hists *self)
+unsigned int hists__sort_list_width(struct hists *hists)
 {
         struct sort_entry *se;
         int ret = 9; /* total % */
@@ -896,9 +1025,12 @@ unsigned int hists__sort_list_width(struct hists *self)
         if (symbol_conf.show_nr_samples)
                 ret += 11;
 
+        if (symbol_conf.show_total_period)
+                ret += 13;
+
         list_for_each_entry(se, &hist_entry__sort_list, list)
                 if (!se->elide)
-                        ret += 2 + hists__col_len(self, se->se_width_idx);
+                        ret += 2 + hists__col_len(hists, se->se_width_idx);
 
         if (verbose) /* Addr + origin */
                 ret += 3 + BITS_PER_LONG / 4;
@@ -906,32 +1038,32 @@ unsigned int hists__sort_list_width(struct hists *self)
         return ret;
 }
 
-static void hists__remove_entry_filter(struct hists *self, struct hist_entry *h,
+static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h,
                                        enum hist_filter filter)
 {
         h->filtered &= ~(1 << filter);
         if (h->filtered)
                 return;
 
-        ++self->nr_entries;
+        ++hists->nr_entries;
         if (h->ms.unfolded)
-                self->nr_entries += h->nr_rows;
+                hists->nr_entries += h->nr_rows;
         h->row_offset = 0;
-        self->stats.total_period += h->period;
-        self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
+        hists->stats.total_period += h->period;
+        hists->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
 
-        hists__calc_col_len(self, h);
+        hists__calc_col_len(hists, h);
 }
 
-void hists__filter_by_dso(struct hists *self, const struct dso *dso)
+void hists__filter_by_dso(struct hists *hists, const struct dso *dso)
 {
         struct rb_node *nd;
 
-        self->nr_entries = self->stats.total_period = 0;
-        self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
-        hists__reset_col_len(self);
+        hists->nr_entries = hists->stats.total_period = 0;
+        hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+        hists__reset_col_len(hists);
 
-        for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
                 if (symbol_conf.exclude_other && !h->parent)
@@ -942,19 +1074,19 @@ void hists__filter_by_dso(struct hists *self, const struct dso *dso)
                         continue;
                 }
 
-                hists__remove_entry_filter(self, h, HIST_FILTER__DSO);
+                hists__remove_entry_filter(hists, h, HIST_FILTER__DSO);
         }
 }
 
-void hists__filter_by_thread(struct hists *self, const struct thread *thread)
+void hists__filter_by_thread(struct hists *hists, const struct thread *thread)
 {
         struct rb_node *nd;
 
-        self->nr_entries = self->stats.total_period = 0;
-        self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
-        hists__reset_col_len(self);
+        hists->nr_entries = hists->stats.total_period = 0;
+        hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+        hists__reset_col_len(hists);
 
-        for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+        for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
                 struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
                 if (thread != NULL && h->thread != thread) {
@@ -962,7 +1094,7 @@ void hists__filter_by_thread(struct hists *self, const struct thread *thread)
                         continue;
                 }
 
-                hists__remove_entry_filter(self, h, HIST_FILTER__THREAD);
+                hists__remove_entry_filter(hists, h, HIST_FILTER__THREAD);
         }
 }
 
@@ -976,13 +1108,13 @@ int hist_entry__annotate(struct hist_entry *he, size_t privsize)
         return symbol__annotate(he->ms.sym, he->ms.map, privsize);
 }
 
-void hists__inc_nr_events(struct hists *self, u32 type)
+void hists__inc_nr_events(struct hists *hists, u32 type)
 {
-        ++self->stats.nr_events[0];
-        ++self->stats.nr_events[type];
+        ++hists->stats.nr_events[0];
+        ++hists->stats.nr_events[type];
 }
 
-size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
+size_t hists__fprintf_nr_events(struct hists *hists, FILE *fp)
 {
         int i;
         size_t ret = 0;
@@ -990,7 +1122,7 @@ size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
         for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) {
                 const char *name;
 
-                if (self->stats.nr_events[i] == 0)
+                if (hists->stats.nr_events[i] == 0)
                         continue;
 
                 name = perf_event__name(i);
@@ -998,8 +1130,18 @@ size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
                         continue;
 
                 ret += fprintf(fp, "%16s events: %10d\n", name,
-                               self->stats.nr_events[i]);
+                               hists->stats.nr_events[i]);
         }
 
         return ret;
 }
+
+void hists__init(struct hists *hists)
+{
+        memset(hists, 0, sizeof(*hists));
+        hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT;
+        hists->entries_in = &hists->entries_in_array[0];
+        hists->entries_collapsed = RB_ROOT;
+        hists->entries = RB_ROOT;
+        pthread_mutex_init(&hists->lock, NULL);
+}
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 3beb97c4d822..7ea1e560e008 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -2,6 +2,7 @@
 #define __PERF_HIST_H
 
 #include <linux/types.h>
+#include <pthread.h>
 #include "callchain.h"
 
 extern struct callchain_param callchain_param;
@@ -43,8 +44,12 @@ enum hist_column {
 };
 
 struct hists {
+        struct rb_root          entries_in_array[2];
+        struct rb_root          *entries_in;
         struct rb_root          entries;
+        struct rb_root          entries_collapsed;
         u64                     nr_entries;
+        pthread_mutex_t         lock;
         struct events_stats     stats;
         u64                     event_stream;
         u16                     col_len[HISTC_NR_COLS];
@@ -52,14 +57,16 @@ struct hists {
         struct callchain_cursor callchain_cursor;
 };
 
+void hists__init(struct hists *hists);
+
 struct hist_entry *__hists__add_entry(struct hists *self,
                                       struct addr_location *al,
                                       struct symbol *parent, u64 period);
 extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
 extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
-int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+int hist_entry__fprintf(struct hist_entry *he, size_t size, struct hists *hists,
                         struct hists *pair_hists, bool show_displacement,
-                        long displacement, FILE *fp, u64 total);
+                        long displacement, FILE *fp, u64 session_total);
 int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
                          struct hists *hists, struct hists *pair_hists,
                          bool show_displacement, long displacement,
@@ -67,13 +74,19 @@ int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
 void hist_entry__free(struct hist_entry *);
 
 void hists__output_resort(struct hists *self);
+void hists__output_resort_threaded(struct hists *hists);
 void hists__collapse_resort(struct hists *self);
+void hists__collapse_resort_threaded(struct hists *hists);
+
+void hists__decay_entries(struct hists *hists);
+void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 
 void hists__inc_nr_events(struct hists *self, u32 type);
 size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
 
 size_t hists__fprintf(struct hists *self, struct hists *pair,
-                      bool show_displacement, FILE *fp);
+                      bool show_displacement, bool show_header,
+                      int max_rows, int max_cols, FILE *fp);
 
 int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
 int hist_entry__annotate(struct hist_entry *self, size_t privsize);
@@ -90,13 +103,16 @@ struct perf_evlist;
 #ifdef NO_NEWT_SUPPORT
 static inline
 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __used,
-                                  const char *help __used)
+                                  const char *help __used, void(*timer)(void *arg) __used, void *arg,
+                                  int refresh __used)
 {
         return 0;
 }
 
 static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
-                                           int evidx __used)
+                                           int evidx __used, int nr_events __used,
+                                           void(*timer)(void *arg) __used,
+                                           void *arg __used, int delay_secs __used);
 {
         return 0;
 }
@@ -104,12 +120,15 @@ static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
 #define KEY_RIGHT -2
 #else
 #include <newt.h>
-int hist_entry__tui_annotate(struct hist_entry *self, int evidx);
+int hist_entry__tui_annotate(struct hist_entry *he, int evidx, int nr_events,
+                             void(*timer)(void *arg), void *arg, int delay_secs);
 
 #define KEY_LEFT NEWT_KEY_LEFT
 #define KEY_RIGHT NEWT_KEY_RIGHT
 
-int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help);
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
+                                  void(*timer)(void *arg), void *arg,
+                                  int refresh);
 #endif
 
 unsigned int hists__sort_list_width(struct hists *self);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 72458d9da5b1..20e011c99a94 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1326,3 +1326,22 @@ int perf_session__cpu_bitmap(struct perf_session *session,
 
         return 0;
 }
+
+void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
+                                bool full)
+{
+        struct stat st;
+        int ret;
+
+        if (session == NULL || fp == NULL)
+                return;
+
+        ret = fstat(session->fd, &st);
+        if (ret == -1)
+                return;
+
+        fprintf(fp, "# ========\n");
+        fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
+        perf_header__fprintf_info(session, fp, full);
+        fprintf(fp, "# ========\n#\n");
+}
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index 974d0cbee5e9..514b06d41f05 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -177,4 +177,5 @@ void perf_session__print_ip(union perf_event *event,
 int perf_session__cpu_bitmap(struct perf_session *session,
                              const char *cpu_list, unsigned long *cpu_bitmap);
 
+void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 #endif /* __PERF_SESSION_H */
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 77d0388ad415..03851e301721 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -45,6 +45,7 @@ extern enum sort_type sort__first_dimension;
  * @nr_rows - rows expanded in callchain, recalculated on folding/unfolding
  */
 struct hist_entry {
+        struct rb_node          rb_node_in;
         struct rb_node          rb_node;
         u64                     period;
         u64                     period_sys;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 077df15ee705..3f09a23f71b4 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -46,7 +46,6 @@ struct symbol_conf symbol_conf = {
         .exclude_other    = true,
         .use_modules      = true,
         .try_vmlinux_path = true,
-        .annotate_asm_raw = true,
         .annotate_src     = true,
         .symfs            = "",
 };
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 7733f0b3cd41..29f8d742e92f 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -72,6 +72,7 @@ struct symbol_conf {
                         use_modules,
                         sort_by_name,
                         show_nr_samples,
+                        show_total_period,
                         use_callchain,
                         exclude_other,
                         show_cpu_utilization,
diff --git a/tools/perf/util/top.c b/tools/perf/util/top.c
index a11f60735a18..500471dffa4f 100644
--- a/tools/perf/util/top.c
+++ b/tools/perf/util/top.c
@@ -15,52 +15,6 @@
 #include "top.h"
 #include <inttypes.h>
 
-/*
- * Ordering weight: count-1 * count-2 * ... / count-n
- */
-static double sym_weight(const struct sym_entry *sym, struct perf_top *top)
-{
-        double weight = sym->snap_count;
-        int counter;
-
-        if (!top->display_weighted)
-                return weight;
-
-        for (counter = 1; counter < top->evlist->nr_entries - 1; counter++)
-                weight *= sym->count[counter];
-
-        weight /= (sym->count[counter] + 1);
-
-        return weight;
-}
-
-static void perf_top__remove_active_sym(struct perf_top *top, struct sym_entry *syme)
-{
-        pthread_mutex_lock(&top->active_symbols_lock);
-        list_del_init(&syme->node);
-        pthread_mutex_unlock(&top->active_symbols_lock);
-}
-
-static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
-{
-        struct rb_node **p = &tree->rb_node;
-        struct rb_node *parent = NULL;
-        struct sym_entry *iter;
-
-        while (*p != NULL) {
-                parent = *p;
-                iter = rb_entry(parent, struct sym_entry, rb_node);
-
-                if (se->weight > iter->weight)
-                        p = &(*p)->rb_left;
-                else
-                        p = &(*p)->rb_right;
-        }
-
-        rb_link_node(&se->rb_node, parent, p);
-        rb_insert_color(&se->rb_node, tree);
-}
-
 #define SNPRINTF(buf, size, fmt, args...) \
 ({ \
         size_t r = snprintf(buf, size, fmt, ## args); \
@@ -69,7 +23,6 @@ static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
 
 size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
 {
-        struct perf_evsel *counter;
         float samples_per_sec = top->samples / top->delay_secs;
         float ksamples_per_sec = top->kernel_samples / top->delay_secs;
         float esamples_percent = (100.0 * top->exact_samples) / top->samples;
@@ -104,7 +57,7 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
                                esamples_percent);
         }
 
-        if (top->evlist->nr_entries == 1 || !top->display_weighted) {
+        if (top->evlist->nr_entries == 1) {
                 struct perf_evsel *first;
                 first = list_entry(top->evlist->entries.next, struct perf_evsel, node);
                 ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
@@ -112,27 +65,7 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
                                 top->freq ? "Hz" : "");
         }
 
-        if (!top->display_weighted) {
-                ret += SNPRINTF(bf + ret, size - ret, "%s",
-                                event_name(top->sym_evsel));
-        } else {
-                /*
-                 * Don't let events eat all the space. Leaving 30 bytes
-                 * for the rest should be enough.
-                 */
-                size_t last_pos = size - 30;
-
-                list_for_each_entry(counter, &top->evlist->entries, node) {
-                        ret += SNPRINTF(bf + ret, size - ret, "%s%s",
-                                        counter->idx ? "/" : "",
-                                        event_name(counter));
-                        if (ret > last_pos) {
-                                sprintf(bf + last_pos - 3, "..");
-                                ret = last_pos - 1;
-                                break;
-                        }
-                }
-        }
+        ret += SNPRINTF(bf + ret, size - ret, "%s", event_name(top->sym_evsel));
 
         ret += SNPRINTF(bf + ret, size - ret, "], ");
 
@@ -166,73 +99,3 @@ void perf_top__reset_sample_counters(struct perf_top *top)
         top->exact_samples = top->guest_kernel_samples =
         top->guest_us_samples = 0;
 }
-
-float perf_top__decay_samples(struct perf_top *top, struct rb_root *root)
-{
-        struct sym_entry *syme, *n;
-        float sum_ksamples = 0.0;
-        int snap = !top->display_weighted ? top->sym_evsel->idx : 0, j;
-
-        /* Sort the active symbols */
-        pthread_mutex_lock(&top->active_symbols_lock);
-        syme = list_entry(top->active_symbols.next, struct sym_entry, node);
-        pthread_mutex_unlock(&top->active_symbols_lock);
-
-        top->rb_entries = 0;
-        list_for_each_entry_safe_from(syme, n, &top->active_symbols, node) {
-                syme->snap_count = syme->count[snap];
-                if (syme->snap_count != 0) {
-
-                        if ((top->hide_user_symbols &&
-                             syme->map->dso->kernel == DSO_TYPE_USER) ||
-                            (top->hide_kernel_symbols &&
-                             syme->map->dso->kernel == DSO_TYPE_KERNEL)) {
-                                perf_top__remove_active_sym(top, syme);
-                                continue;
-                        }
-                        syme->weight = sym_weight(syme, top);
-
-                        if ((int)syme->snap_count >= top->count_filter) {
-                                rb_insert_active_sym(root, syme);
-                                ++top->rb_entries;
-                        }
-                        sum_ksamples += syme->snap_count;
-
-                        for (j = 0; j < top->evlist->nr_entries; j++)
-                                syme->count[j] = top->zero ? 0 : syme->count[j] * 7 / 8;
-                } else
-                        perf_top__remove_active_sym(top, syme);
-        }
-
-        return sum_ksamples;
-}
-
-/*
- * Find the longest symbol name that will be displayed
- */
-void perf_top__find_widths(struct perf_top *top, struct rb_root *root,
-                           int *dso_width, int *dso_short_width, int *sym_width)
-{
-        struct rb_node *nd;
-        int printed = 0;
-
-        *sym_width = *dso_width = *dso_short_width = 0;
-
-        for (nd = rb_first(root); nd; nd = rb_next(nd)) {
-                struct sym_entry *syme = rb_entry(nd, struct sym_entry, rb_node);
-                struct symbol *sym = sym_entry__symbol(syme);
-
-                if (++printed > top->print_entries ||
-                    (int)syme->snap_count < top->count_filter)
-                        continue;
-
-                if (syme->map->dso->long_name_len > *dso_width)
-                        *dso_width = syme->map->dso->long_name_len;
-
-                if (syme->map->dso->short_name_len > *dso_short_width)
-                        *dso_short_width = syme->map->dso->short_name_len;
-
-                if (sym->namelen > *sym_width)
-                        *sym_width = sym->namelen;
-        }
-}
diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h
index b07b0410463c..01d1057f3074 100644
--- a/tools/perf/util/top.h
+++ b/tools/perf/util/top.h
@@ -4,64 +4,32 @@
 #include "types.h"
 #include "../perf.h"
 #include <stddef.h>
-#include <pthread.h>
-#include <linux/list.h>
-#include <linux/rbtree.h>
 
 struct perf_evlist;
 struct perf_evsel;
 struct perf_session;
 
-struct sym_entry {
-        struct rb_node          rb_node;
-        struct list_head        node;
-        unsigned long           snap_count;
-        double                  weight;
-        struct map              *map;
-        unsigned long           count[0];
-};
-
-static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
-{
-       return ((void *)self) + symbol_conf.priv_size;
-}
-
 struct perf_top {
         struct perf_evlist *evlist;
         /*
          * Symbols will be added here in perf_event__process_sample and will
          * get out after decayed.
          */
-        struct list_head   active_symbols;
-        pthread_mutex_t    active_symbols_lock;
-        pthread_cond_t     active_symbols_cond;
         u64                samples;
         u64                kernel_samples, us_samples;
         u64                exact_samples;
         u64                guest_us_samples, guest_kernel_samples;
         u64                total_lost_warned;
         int                print_entries, count_filter, delay_secs;
-        int                display_weighted, freq, rb_entries;
+        int                freq;
         pid_t              target_pid, target_tid;
         bool               hide_kernel_symbols, hide_user_symbols, zero;
         const char         *cpu_list;
-        struct sym_entry   *sym_filter_entry;
+        struct hist_entry  *sym_filter_entry;
         struct perf_evsel  *sym_evsel;
         struct perf_session *session;
 };
 
 size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size);
 void perf_top__reset_sample_counters(struct perf_top *top);
-float perf_top__decay_samples(struct perf_top *top, struct rb_root *root);
-void perf_top__find_widths(struct perf_top *top, struct rb_root *root,
-                           int *dso_width, int *dso_short_width, int *sym_width);
-
-#ifdef NO_NEWT_SUPPORT
-static inline int perf_top__tui_browser(struct perf_top *top __used)
-{
-        return 0;
-}
-#else
-int perf_top__tui_browser(struct perf_top *top);
-#endif
 #endif /* __PERF_TOP_H */
diff --git a/tools/perf/util/ui/browsers/annotate.c b/tools/perf/util/ui/browsers/annotate.c
index 0229723aceb3..674b55e686fd 100644
--- a/tools/perf/util/ui/browsers/annotate.c
+++ b/tools/perf/util/ui/browsers/annotate.c
@@ -20,6 +20,7 @@ struct annotate_browser {
         struct ui_browser b;
         struct rb_root    entries;
         struct rb_node    *curr_hot;
+        struct objdump_line *selection;
 };
 
 struct objdump_line_rb_node {
@@ -36,6 +37,7 @@ struct objdump_line_rb_node *objdump_line__rb(struct objdump_line *self)
 
 static void annotate_browser__write(struct ui_browser *self, void *entry, int row)
 {
+        struct annotate_browser *ab = container_of(self, struct annotate_browser, b);
         struct objdump_line *ol = rb_entry(entry, struct objdump_line, node);
         bool current_entry = ui_browser__is_current_entry(self, row);
         int width = self->width;
@@ -58,6 +60,8 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
 
         if (!current_entry)
                 ui_browser__set_color(self, HE_COLORSET_CODE);
+        else
+                ab->selection = ol;
 }
 
 static double objdump_line__calc_percent(struct objdump_line *self,
@@ -141,7 +145,8 @@ static void annotate_browser__set_top(struct annotate_browser *self,
 static void annotate_browser__calc_percent(struct annotate_browser *browser,
                                            int evidx)
 {
-        struct symbol *sym = browser->b.priv;
+        struct map_symbol *ms = browser->b.priv;
+        struct symbol *sym = ms->sym;
         struct annotation *notes = symbol__annotation(sym);
         struct objdump_line *pos;
 
@@ -164,21 +169,23 @@ static void annotate_browser__calc_percent(struct annotate_browser *browser,
 }
 
 static int annotate_browser__run(struct annotate_browser *self, int evidx,
-                                 int refresh)
+                                 int nr_events, void(*timer)(void *arg),
+                                 void *arg, int delay_secs)
 {
         struct rb_node *nd = NULL;
-        struct symbol *sym = self->b.priv;
+        struct map_symbol *ms = self->b.priv;
+        struct symbol *sym = ms->sym;
         /*
          * RIGHT To allow builtin-annotate to cycle thru multiple symbols by
          * examining the exit key for this function.
          */
         int exit_keys[] = { 'H', NEWT_KEY_TAB, NEWT_KEY_UNTAB,
-                            NEWT_KEY_RIGHT, 0 };
+                            NEWT_KEY_RIGHT, NEWT_KEY_ENTER, 0 };
         int key;
 
         if (ui_browser__show(&self->b, sym->name,
-                             "<-, -> or ESC: exit, TAB/shift+TAB: "
-                             "cycle hottest lines, H: Hottest") < 0)
+                             "<- or ESC: exit, TAB/shift+TAB: "
+                             "cycle hottest lines, H: Hottest, -> Line action") < 0)
                 return -1;
 
         ui_browser__add_exit_keys(&self->b, exit_keys);
@@ -189,13 +196,13 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
 
         nd = self->curr_hot;
 
-        if (refresh != 0)
-                newtFormSetTimer(self->b.form, refresh);
+        if (delay_secs != 0)
+                newtFormSetTimer(self->b.form, delay_secs * 1000);
 
         while (1) {
                 key = ui_browser__run(&self->b);
 
-                if (refresh != 0) {
+                if (delay_secs != 0) {
                         annotate_browser__calc_percent(self, evidx);
                         /*
                          * Current line focus got out of the list of most active
@@ -212,7 +219,10 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
                          * FIXME we need to check if it was
                          * es.reason == NEWT_EXIT_TIMER
                          */
-                        if (refresh != 0)
+                        if (timer != NULL)
+                                timer(arg);
+
+                        if (delay_secs != 0)
                                 symbol__annotate_decay_histogram(sym, evidx);
                         continue;
                 case NEWT_KEY_TAB:
@@ -234,6 +244,57 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
                 case 'H':
                         nd = self->curr_hot;
                         break;
+                case NEWT_KEY_ENTER:
+                case NEWT_KEY_RIGHT:
+                        if (self->selection == NULL) {
+                                ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
+                                continue;
+                        }
+
+                        if (self->selection->offset == -1) {
+                                ui_helpline__puts("Actions are only available for assembly lines.");
+                                continue;
+                        } else {
+                                char *s = strstr(self->selection->line, "callq ");
+                                struct annotation *notes;
+                                struct symbol *target;
+                                u64 ip;
+
+                                if (s == NULL) {
+                                        ui_helpline__puts("Actions are only available for the 'callq' instruction.");
+                                        continue;
+                                }
+
+                                s = strchr(s, ' ');
+                                if (s++ == NULL) {
+                                        ui_helpline__puts("Invallid callq instruction.");
+                                        continue;
+                                }
+
+                                ip = strtoull(s, NULL, 16);
+                                ip = ms->map->map_ip(ms->map, ip);
+                                target = map__find_symbol(ms->map, ip, NULL);
+                                if (target == NULL) {
+                                        ui_helpline__puts("The called function was not found.");
+                                        continue;
+                                }
+
+                                notes = symbol__annotation(target);
+                                pthread_mutex_lock(&notes->lock);
+
+                                if (notes->src == NULL &&
+                                    symbol__alloc_hist(target, nr_events) < 0) {
+                                        pthread_mutex_unlock(&notes->lock);
+                                        ui__warning("Not enough memory for annotating '%s' symbol!\n",
+                                                    target->name);
+                                        continue;
+                                }
+
+                                pthread_mutex_unlock(&notes->lock);
+                                symbol__tui_annotate(target, ms->map, evidx, nr_events,
+                                                     timer, arg, delay_secs);
+                        }
+                        break;
                 default:
                         goto out;
                 }
@@ -246,22 +307,29 @@ out:
         return key;
 }
 
-int hist_entry__tui_annotate(struct hist_entry *he, int evidx)
+int hist_entry__tui_annotate(struct hist_entry *he, int evidx, int nr_events,
+                             void(*timer)(void *arg), void *arg, int delay_secs)
 {
-        return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx, 0);
+        return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx, nr_events,
+                                    timer, arg, delay_secs);
 }
 
 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
-                         int refresh)
+                         int nr_events, void(*timer)(void *arg), void *arg,
+                         int delay_secs)
 {
         struct objdump_line *pos, *n;
         struct annotation *notes;
+        struct map_symbol ms = {
+                .map = map,
+                .sym = sym,
+        };
         struct annotate_browser browser = {
                 .b = {
                         .refresh = ui_browser__list_head_refresh,
                         .seek    = ui_browser__list_head_seek,
                         .write   = annotate_browser__write,
-                        .priv    = sym,
+                        .priv    = &ms,
                 },
         };
         int ret;
@@ -293,7 +361,8 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
 
         browser.b.entries = &notes->src->source,
         browser.b.width += 18; /* Percentage */
-        ret = annotate_browser__run(&browser, evidx, refresh);
+        ret = annotate_browser__run(&browser, evidx, nr_events,
+                                    timer, arg, delay_secs);
         list_for_each_entry_safe(pos, n, &notes->src->source, node) {
                 list_del(&pos->node);
                 objdump_line__free(pos);
diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index 5d767c622dfc..e64d9527f14e 100644
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -24,8 +24,15 @@ struct hist_browser {
         struct hists        *hists;
         struct hist_entry   *he_selection;
         struct map_symbol   *selection;
+        const struct thread *thread_filter;
+        const struct dso    *dso_filter;
+        bool                 has_symbols;
 };
 
+static int hists__browser_title(struct hists *self, char *bf, size_t size,
+                                const char *ev_name, const struct dso *dso,
+                                const struct thread *thread);
+
 static void hist_browser__refresh_dimensions(struct hist_browser *self)
 {
         /* 3 == +/- toggle symbol before actual hist_entry rendering */
@@ -290,28 +297,53 @@ static void hist_browser__set_folding(struct hist_browser *self, bool unfold)
         ui_browser__reset_index(&self->b);
 }
 
-static int hist_browser__run(struct hist_browser *self, const char *title)
+static int hist_browser__run(struct hist_browser *self, const char *ev_name,
+                             void(*timer)(void *arg), void *arg, int delay_secs)
 {
         int key;
-        int exit_keys[] = { 'a', '?', 'h', 'C', 'd', 'D', 'E', 't',
-                            NEWT_KEY_ENTER, NEWT_KEY_RIGHT, NEWT_KEY_LEFT,
-                            NEWT_KEY_TAB, NEWT_KEY_UNTAB, 0, };
+        int delay_msecs = delay_secs * 1000;
+        char title[160];
+        int sym_exit_keys[] = { 'a', 'h', 'C', 'd', 'E', 't', 0, };
+        int exit_keys[] = { '?', 'h', 'D', NEWT_KEY_LEFT, NEWT_KEY_RIGHT,
+                            NEWT_KEY_TAB, NEWT_KEY_UNTAB, NEWT_KEY_ENTER, 0, };
 
         self->b.entries = &self->hists->entries;
         self->b.nr_entries = self->hists->nr_entries;
 
         hist_browser__refresh_dimensions(self);
+        hists__browser_title(self->hists, title, sizeof(title), ev_name,
+                             self->dso_filter, self->thread_filter);
 
         if (ui_browser__show(&self->b, title,
                              "Press '?' for help on key bindings") < 0)
                 return -1;
 
+        if (timer != NULL)
+                newtFormSetTimer(self->b.form, delay_msecs);
+
         ui_browser__add_exit_keys(&self->b, exit_keys);
+        if (self->has_symbols)
+                ui_browser__add_exit_keys(&self->b, sym_exit_keys);
 
         while (1) {
                 key = ui_browser__run(&self->b);
 
                 switch (key) {
+                case -1:
+                        /* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */
+                        timer(arg);
+                        /*
+                         * The timer may have changed the number of entries.
+                         * XXX: Find better way to keep this in synch, probably
+                         * removing this timer function altogether and just sync
+                         * using the hists->lock...
+                         */
+                        self->b.nr_entries = self->hists->nr_entries;
+                        hists__browser_title(self->hists, title, sizeof(title),
+                                             ev_name, self->dso_filter,
+                                             self->thread_filter);
+                        ui_browser__show_title(&self->b, title);
+                        continue;
                 case 'D': { /* Debug */
                         static int seq;
                         struct hist_entry *h = rb_entry(self->b.top,
@@ -761,6 +793,7 @@ static struct hist_browser *hist_browser__new(struct hists *hists)
                 self->hists = hists;
                 self->b.refresh = hist_browser__refresh;
                 self->b.seek = ui_browser__hists_seek;
+                self->has_symbols = sort_sym.list.next != NULL;
         }
 
         return self;
@@ -803,16 +836,15 @@ static int hists__browser_title(struct hists *self, char *bf, size_t size,
         return printed;
 }
 
-static int perf_evsel__hists_browse(struct perf_evsel *evsel,
+static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
                                     const char *helpline, const char *ev_name,
-                                    bool left_exits)
+                                    bool left_exits,
+                                    void(*timer)(void *arg), void *arg,
+                                    int delay_secs)
 {
         struct hists *self = &evsel->hists;
         struct hist_browser *browser = hist_browser__new(self);
         struct pstack *fstack;
-        const struct thread *thread_filter = NULL;
-        const struct dso *dso_filter = NULL;
-        char msg[160];
         int key = -1;
 
         if (browser == NULL)
@@ -824,8 +856,6 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 
         ui_helpline__push(helpline);
 
-        hists__browser_title(self, msg, sizeof(msg), ev_name,
-                             dso_filter, thread_filter);
         while (1) {
                 const struct thread *thread = NULL;
                 const struct dso *dso = NULL;
@@ -834,7 +864,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
                     annotate = -2, zoom_dso = -2, zoom_thread = -2,
                     browse_map = -2;
 
-                key = hist_browser__run(browser, msg);
+                key = hist_browser__run(browser, ev_name, timer, arg, delay_secs);
 
                 if (browser->he_selection != NULL) {
                         thread = hist_browser__selected_thread(browser);
@@ -862,16 +892,17 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
                 case NEWT_KEY_F1:
                 case 'h':
                 case '?':
-                        ui__help_window("->        Zoom into DSO/Threads & Annotate current symbol\n"
+                        ui__help_window("h/?/F1    Show this window\n"
+                                        "TAB/UNTAB Switch events\n"
+                                        "q/CTRL+C  Exit browser\n\n"
+                                        "For symbolic views (--sort has sym):\n\n"
+                                        "->        Zoom into DSO/Threads & Annotate current symbol\n"
                                         "<-        Zoom out\n"
                                         "a         Annotate current symbol\n"
-                                        "h/?/F1    Show this window\n"
                                         "C         Collapse all callchains\n"
                                         "E         Expand all callchains\n"
                                         "d         Zoom into current DSO\n"
-                                        "t         Zoom into current Thread\n"
-                                        "TAB/UNTAB Switch events\n"
-                                        "q/CTRL+C  Exit browser");
+                                        "t         Zoom into current Thread\n");
                         continue;
                 case NEWT_KEY_ENTER:
                 case NEWT_KEY_RIGHT:
@@ -889,9 +920,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
                                 continue;
                         }
                         top = pstack__pop(fstack);
-                        if (top == &dso_filter)
+                        if (top == &browser->dso_filter)
                                 goto zoom_out_dso;
-                        if (top == &thread_filter)
+                        if (top == &browser->thread_filter)
                                 goto zoom_out_thread;
                         continue;
                 }
@@ -904,6 +935,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
                         goto out_free_stack;
                 }
 
+                if (!browser->has_symbols)
+                        goto add_exit_option;
+
                 if (browser->selection != NULL &&
                     browser->selection->sym != NULL &&
                     !browser->selection->map->dso->annotate_warned &&
@@ -913,14 +947,14 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 
                 if (thread != NULL &&
                     asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
-                             (thread_filter ? "out of" : "into"),
+                             (browser->thread_filter ? "out of" : "into"),
                              (thread->comm_set ? thread->comm : ""),
                              thread->pid) > 0)
                         zoom_thread = nr_options++;
 
                 if (dso != NULL &&
                     asprintf(&options[nr_options], "Zoom %s %s DSO",
-                             (dso_filter ? "out of" : "into"),
+                             (browser->dso_filter ? "out of" : "into"),
                              (dso->kernel ? "the Kernel" : dso->short_name)) > 0)
                         zoom_dso = nr_options++;
 
@@ -928,7 +962,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
                     browser->selection->map != NULL &&
                     asprintf(&options[nr_options], "Browse map details") > 0)
                         browse_map = nr_options++;
-
+add_exit_option:
                 options[nr_options++] = (char *)"Exit";
 
                 choice = ui__popup_menu(nr_options, options);
@@ -949,45 +983,42 @@ do_annotate:
                         if (he == NULL)
                                 continue;
 
-                        hist_entry__tui_annotate(he, evsel->idx);
+                        hist_entry__tui_annotate(he, evsel->idx, nr_events,
+                                                 timer, arg, delay_secs);
                 } else if (choice == browse_map)
                         map__browse(browser->selection->map);
                 else if (choice == zoom_dso) {
 zoom_dso:
-                        if (dso_filter) {
-                                pstack__remove(fstack, &dso_filter);
+                        if (browser->dso_filter) {
+                                pstack__remove(fstack, &browser->dso_filter);
 zoom_out_dso:
                                 ui_helpline__pop();
-                                dso_filter = NULL;
+                                browser->dso_filter = NULL;
                         } 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);
-                                dso_filter = dso;
-                                pstack__push(fstack, &dso_filter);
+                                browser->dso_filter = dso;
+                                pstack__push(fstack, &browser->dso_filter);
                         }
-                        hists__filter_by_dso(self, dso_filter);
-                        hists__browser_title(self, msg, sizeof(msg), ev_name,
-                                             dso_filter, thread_filter);
+                        hists__filter_by_dso(self, browser->dso_filter);
                         hist_browser__reset(browser);
                 } else if (choice == zoom_thread) {
 zoom_thread:
-                        if (thread_filter) {
-                                pstack__remove(fstack, &thread_filter);
+                        if (browser->thread_filter) {
+                                pstack__remove(fstack, &browser->thread_filter);
 zoom_out_thread:
                                 ui_helpline__pop();
-                                thread_filter = NULL;
+                                browser->thread_filter = NULL;
                         } else {
                                 ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
                                                    thread->comm_set ? thread->comm : "",
                                                    thread->pid);
-                                thread_filter = thread;
-                                pstack__push(fstack, &thread_filter);
+                                browser->thread_filter = thread;
+                                pstack__push(fstack, &browser->thread_filter);
                         }
-                        hists__filter_by_thread(self, thread_filter);
-                        hists__browser_title(self, msg, sizeof(msg), ev_name,
-                                             dso_filter, thread_filter);
+                        hists__filter_by_thread(self, browser->thread_filter);
                         hist_browser__reset(browser);
                 }
         }
@@ -1026,9 +1057,12 @@ static void perf_evsel_menu__write(struct ui_browser *browser,
                 menu->selection = evsel;
 }
 
-static int perf_evsel_menu__run(struct perf_evsel_menu *menu, const char *help)
+static int perf_evsel_menu__run(struct perf_evsel_menu *menu,
+                                int nr_events, const char *help,
+                                void(*timer)(void *arg), void *arg, int delay_secs)
 {
         int exit_keys[] = { NEWT_KEY_ENTER, NEWT_KEY_RIGHT, 0, };
+        int delay_msecs = delay_secs * 1000;
         struct perf_evlist *evlist = menu->b.priv;
         struct perf_evsel *pos;
         const char *ev_name, *title = "Available samples";
@@ -1038,20 +1072,30 @@ static int perf_evsel_menu__run(struct perf_evsel_menu *menu, const char *help)
                              "ESC: exit, ENTER|->: Browse histograms") < 0)
                 return -1;
 
+        if (timer != NULL)
+                newtFormSetTimer(menu->b.form, delay_msecs);
+
         ui_browser__add_exit_keys(&menu->b, exit_keys);
 
         while (1) {
                 key = ui_browser__run(&menu->b);
 
                 switch (key) {
+                case -1:
+                        /* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */
+                        timer(arg);
+                        continue;
                 case NEWT_KEY_RIGHT:
                 case NEWT_KEY_ENTER:
                         if (!menu->selection)
                                 continue;
                         pos = menu->selection;
+                        perf_evlist__set_selected(evlist, pos);
 browse_hists:
                         ev_name = event_name(pos);
-                        key = perf_evsel__hists_browse(pos, help, ev_name, true);
+                        key = perf_evsel__hists_browse(pos, nr_events, help,
+                                                       ev_name, true, timer,
+                                                       arg, delay_secs);
                         ui_browser__show_title(&menu->b, title);
                         break;
                 case NEWT_KEY_LEFT:
@@ -1070,12 +1114,14 @@ browse_hists:
                                 pos = list_entry(evlist->entries.next, struct perf_evsel, node);
                         else
                                 pos = list_entry(pos->node.next, struct perf_evsel, node);
+                        perf_evlist__set_selected(evlist, pos);
                         goto browse_hists;
                 case NEWT_KEY_UNTAB:
                         if (pos->node.prev == &evlist->entries)
                                 pos = list_entry(evlist->entries.prev, struct perf_evsel, node);
                         else
                                 pos = list_entry(pos->node.prev, struct perf_evsel, node);
+                        perf_evlist__set_selected(evlist, pos);
                         goto browse_hists;
                 case 'q':
                 case CTRL('c'):
@@ -1091,7 +1137,9 @@ out:
 }
 
 static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
-                                           const char *help)
+                                           const char *help,
+                                           void(*timer)(void *arg), void *arg,
+                                           int delay_secs)
 {
         struct perf_evsel *pos;
         struct perf_evsel_menu menu = {
@@ -1121,18 +1169,24 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
                         pos->name = strdup(ev_name);
         }
 
-        return perf_evsel_menu__run(&menu, help);
+        return perf_evsel_menu__run(&menu, evlist->nr_entries, help, timer,
+                                    arg, delay_secs);
 }
 
-int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help)
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
+                                  void(*timer)(void *arg), void *arg,
+                                  int delay_secs)
 {
 
         if (evlist->nr_entries == 1) {
                 struct perf_evsel *first = list_entry(evlist->entries.next,
                                                       struct perf_evsel, node);
                 const char *ev_name = event_name(first);
-                return perf_evsel__hists_browse(first, help, ev_name, false);
+                return perf_evsel__hists_browse(first, evlist->nr_entries, help,
+                                                ev_name, false, timer, arg,
+                                                delay_secs);
         }
 
-        return __perf_evlist__tui_browse_hists(evlist, help);
+        return __perf_evlist__tui_browse_hists(evlist, help,
+                                               timer, arg, delay_secs);
 }
diff --git a/tools/perf/util/ui/browsers/top.c b/tools/perf/util/ui/browsers/top.c
deleted file mode 100644
index 9b6b43b32ac8..000000000000
--- a/tools/perf/util/ui/browsers/top.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Parts came from builtin-{top,stat,record}.c, see those files for further
- * copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
- */
-#include "../browser.h"
-#include "../../annotate.h"
-#include "../helpline.h"
-#include "../libslang.h"
-#include "../util.h"
-#include "../ui.h"
-#include "../../evlist.h"
-#include "../../hist.h"
-#include "../../sort.h"
-#include "../../symbol.h"
-#include "../../session.h"
-#include "../../top.h"
-
-struct perf_top_browser {
-        struct ui_browser b;
-        struct rb_root    root;
-        struct sym_entry  *selection;
-        float             sum_ksamples;
-        int               dso_width;
-        int               dso_short_width;
-        int               sym_width;
-};
-
-static void perf_top_browser__write(struct ui_browser *browser, void *entry, int row)
-{
-        struct perf_top_browser *top_browser = container_of(browser, struct perf_top_browser, b);
-        struct sym_entry *syme = rb_entry(entry, struct sym_entry, rb_node);
-        bool current_entry = ui_browser__is_current_entry(browser, row);
-        struct symbol *symbol = sym_entry__symbol(syme);
-        struct perf_top *top = browser->priv;
-        int width = browser->width;
-        double pcnt;
-
-        pcnt = 100.0 - (100.0 * ((top_browser->sum_ksamples - syme->snap_count) /
-                                 top_browser->sum_ksamples));
-        ui_browser__set_percent_color(browser, pcnt, current_entry);
-
-        if (top->evlist->nr_entries == 1 || !top->display_weighted) {
-                slsmg_printf("%20.2f ", syme->weight);
-                width -= 21;
-        } else {
-                slsmg_printf("%9.1f %10ld ", syme->weight, syme->snap_count);
-                width -= 20;
-        }
-
-        slsmg_printf("%4.1f%%", pcnt);
-        width -= 7;
-
-        if (verbose) {
-                slsmg_printf(" %016" PRIx64, symbol->start);
-                width -= 17;
-        }
-
-        slsmg_printf(" %-*.*s ", top_browser->sym_width, top_browser->sym_width,
-                     symbol->name);
-        width -= top_browser->sym_width;
-        slsmg_write_nstring(width >= syme->map->dso->long_name_len ?
-                                syme->map->dso->long_name :
-                                syme->map->dso->short_name, width);
-
-        if (current_entry)
-                top_browser->selection = syme;
-}
-
-static void perf_top_browser__update_rb_tree(struct perf_top_browser *browser)
-{
-        struct perf_top *top = browser->b.priv;
-        u64 top_idx = browser->b.top_idx;
-
-        browser->root = RB_ROOT;
-        browser->b.top = NULL;
-        browser->sum_ksamples = perf_top__decay_samples(top, &browser->root);
-        /*
-         * No active symbols
-         */
-        if (top->rb_entries == 0)
-                return;
-
-        perf_top__find_widths(top, &browser->root, &browser->dso_width,
-                              &browser->dso_short_width,
-                              &browser->sym_width);
-        if (browser->sym_width + browser->dso_width > browser->b.width - 29) {
-                browser->dso_width = browser->dso_short_width;
-                if (browser->sym_width + browser->dso_width > browser->b.width - 29)
-                        browser->sym_width = browser->b.width - browser->dso_width - 29;
-        }
-
-        /*
-         * Adjust the ui_browser indexes since the entries in the browser->root
-         * rb_tree may have changed, then seek it from start, so that we get a
-         * possible new top of the screen.
-         */
-        browser->b.nr_entries = top->rb_entries;
-
-        if (top_idx >= browser->b.nr_entries) {
-                if (browser->b.height >= browser->b.nr_entries)
-                        top_idx = browser->b.nr_entries - browser->b.height;
-                else
-                        top_idx = 0;
-        }
-
-        if (browser->b.index >= top_idx + browser->b.height)
-                browser->b.index = top_idx + browser->b.index - browser->b.top_idx;
-
-        if (browser->b.index >= browser->b.nr_entries)
-                browser->b.index = browser->b.nr_entries - 1;
-
-        browser->b.top_idx = top_idx;
-        browser->b.seek(&browser->b, top_idx, SEEK_SET);
-}
-
-static void perf_top_browser__annotate(struct perf_top_browser *browser)
-{
-        struct sym_entry *syme = browser->selection;
-        struct symbol *sym = sym_entry__symbol(syme);
-        struct annotation *notes = symbol__annotation(sym);
-        struct perf_top *top = browser->b.priv;
-
-        if (notes->src != NULL)
-                goto do_annotation;
-
-        pthread_mutex_lock(&notes->lock);
-
-        top->sym_filter_entry = NULL;
-
-        if (symbol__alloc_hist(sym, top->evlist->nr_entries) < 0) {
-                pr_err("Not enough memory for annotating '%s' symbol!\n",
-                       sym->name);
-                pthread_mutex_unlock(&notes->lock);
-                return;
-        }
-
-        top->sym_filter_entry = syme;
-
-        pthread_mutex_unlock(&notes->lock);
-do_annotation:
-        symbol__tui_annotate(sym, syme->map, 0, top->delay_secs * 1000);
-}
-
-static void perf_top_browser__warn_lost(struct perf_top_browser *browser)
-{
-        struct perf_top *top = browser->b.priv;
-        char msg[128];
-        int len;
-
-        top->total_lost_warned = top->session->hists.stats.total_lost;
-        pthread_mutex_lock(&ui__lock);
-        ui_browser__set_color(&browser->b, HE_COLORSET_TOP);
-        len = snprintf(msg, sizeof(msg),
-                      " WARNING: LOST %" PRIu64 " events, Check IO/CPU overload",
-                      top->total_lost_warned);
-        if (len > browser->b.width)
-                len = browser->b.width;
-        SLsmg_gotorc(0, browser->b.width - len);
-        slsmg_write_nstring(msg, len);
-        pthread_mutex_unlock(&ui__lock);
-}
-
-static int perf_top_browser__run(struct perf_top_browser *browser)
-{
-        int key;
-        char title[160];
-        struct perf_top *top = browser->b.priv;
-        int delay_msecs = top->delay_secs * 1000;
-        int exit_keys[] = { 'a', NEWT_KEY_ENTER, NEWT_KEY_RIGHT, 0, };
-
-        perf_top_browser__update_rb_tree(browser);
-        perf_top__header_snprintf(top, title, sizeof(title));
-        perf_top__reset_sample_counters(top);
-
-        if (ui_browser__show(&browser->b, title,
-                             "ESC: exit, ENTER|->|a: Live Annotate") < 0)
-                return -1;
-
-        newtFormSetTimer(browser->b.form, delay_msecs);
-        ui_browser__add_exit_keys(&browser->b, exit_keys);
-
-        while (1) {
-                key = ui_browser__run(&browser->b);
-
-                switch (key) {
-                case -1:
-                        /* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */
-                        perf_top_browser__update_rb_tree(browser);
-                        perf_top__header_snprintf(top, title, sizeof(title));
-                        perf_top__reset_sample_counters(top);
-                        ui_browser__set_color(&browser->b, NEWT_COLORSET_ROOT);
-                        SLsmg_gotorc(0, 0);
-                        slsmg_write_nstring(title, browser->b.width);
-
-                        if (top->total_lost_warned != top->session->hists.stats.total_lost)
-                                perf_top_browser__warn_lost(browser);
-                        break;
-                case 'a':
-                case NEWT_KEY_RIGHT:
-                case NEWT_KEY_ENTER:
-                        if (browser->selection)
-                                perf_top_browser__annotate(browser);
-                        break;
-                case NEWT_KEY_LEFT:
-                        continue;
-                case NEWT_KEY_ESCAPE:
-                        if (!ui__dialog_yesno("Do you really want to exit?"))
-                                continue;
-                        /* Fall thru */
-                default:
-                        goto out;
-                }
-        }
-out:
-        ui_browser__hide(&browser->b);
-        return key;
-}
-
-int perf_top__tui_browser(struct perf_top *top)
-{
-        struct perf_top_browser browser = {
-                .b = {
-                        .entries = &browser.root,
-                        .refresh = ui_browser__rb_tree_refresh,
-                        .seek    = ui_browser__rb_tree_seek,
-                        .write   = perf_top_browser__write,
-                        .priv    = top,
-                },
-        };
-
-        return perf_top_browser__run(&browser);
-}