Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf update from Ingo Molnar:
 "Lots of changes in this cycle as well, with hundreds of commits from
  over 30 contributors.  Most of the activity was on the tooling side.

  Higher level changes:

   - New 'perf kvm' analysis tool, from Xiao Guangrong.

   - New 'perf trace' system-wide tracing tool

   - uprobes fixes + cleanups from Oleg Nesterov.

   - Lots of patches to make perf build on Android out of box, from
     Irina Tirdea

   - Extend ftrace function tracing utility to be more dynamic for its
     users.  It allows for data passing to the callback functions, as
     well as reading regs as if a breakpoint were to trigger at function
     entry.

     The main goal of this patch series was to allow kprobes to use
     ftrace as an optimized probe point when a probe is placed on an
     ftrace nop.  With lots of help from Masami Hiramatsu, and going
     through lots of iterations, we finally came up with a good
     solution.

   - Add cpumask for uncore pmu, use it in 'stat', from Yan, Zheng.

   - Various tracing updates from Steve Rostedt

   - Clean up and improve 'perf sched' performance by elliminating lots
     of needless calls to libtraceevent.

   - Event group parsing support, from Jiri Olsa

   - UI/gtk refactorings and improvements from Namhyung Kim

   - Add support for non-tracepoint events in perf script python, from
     Feng Tang

   - Add --symbols to 'script', similar to the one in 'report', from
     Feng Tang.

  Infrastructure enhancements and fixes:

   - Convert the trace builtins to use the growing evsel/evlist
     tracepoint infrastructure, removing several open coded constructs
     like switch like series of strcmp to dispatch events, etc.
     Basically what had already been showcased in 'perf sched'.

   - Add evsel constructor for tracepoints, that uses libtraceevent just
     to parse the /format events file, use it in a new 'perf test' to
     make sure the libtraceevent format parsing regressions can be more
     readily caught.

   - Some strange errors were happening in some builds, but not on the
     next, reported by several people, problem was some parser related
     files, generated during the build, didn't had proper make deps, fix
     from Eric Sandeen.

   - Introduce struct and cache information about the environment where
     a perf.data file was captured, from Namhyung Kim.

   - Fix handling of unresolved samples when --symbols is used in
     'report', from Feng Tang.

   - Add union member access support to 'probe', from Hyeoncheol Lee.

   - Fixups to die() removal, from Namhyung Kim.

   - Render fixes for the TUI, from Namhyung Kim.

   - Don't enable annotation in non symbolic view, from Namhyung Kim.

   - Fix pipe mode in 'report', from Namhyung Kim.

   - Move related stats code from stat to util/, will be used by the
     'stat' kvm tool, from Xiao Guangrong.

   - Remove die()/exit() calls from several tools.

   - Resolve vdso callchains, from Jiri Olsa

   - Don't pass const char pointers to basename, so that we can
     unconditionally use libgen.h and thus avoid ifdef BIONIC lines,
     from David Ahern

   - Refactor hist formatting so that it can be reused with the GTK
     browser, From Namhyung Kim

   - Fix build for another rbtree.c change, from Adrian Hunter.

   - Make 'perf diff' command work with evsel hists, from Jiri Olsa.

   - Use the only field_sep var that is set up: symbol_conf.field_sep,
     fix from Jiri Olsa.

   - .gitignore compiled python binaries, from Namhyung Kim.

   - Get rid of die() in more libtraceevent places, from Namhyung Kim.

   - Rename libtraceevent 'private' struct member to 'priv' so that it
     works in C++, from Steven Rostedt

   - Remove lots of exit()/die() calls from tools so that the main perf
     exit routine can take place, from David Ahern

   - Fix x86 build on x86-64, from David Ahern.

   - {int,str,rb}list fixes from Suzuki K Poulose

   - perf.data header fixes from Namhyung Kim

   - Allow user to indicate objdump path, needed in cross environments,
     from Maciek Borzecki

   - Fix hardware cache event name generation, fix from Jiri Olsa

   - Add round trip test for sw, hw and cache event names, catching the
     problem Jiri fixed, after Jiri's patch, the test passes
     successfully.

   - Clean target should do clean for lib/traceevent too, fix from David
     Ahern

   - Check the right variable for allocation failure, fix from Namhyung
     Kim

   - Set up evsel->tp_format regardless of evsel->name being set
     already, fix from Namhyung Kim

   - Oprofile fixes from Robert Richter.

   - Remove perf_event_attr needless version inflation, from Jiri Olsa

   - Introduce libtraceevent strerror like error reporting facility,
     from Namhyung Kim

   - Add pmu mappings to perf.data header and use event names from cmd
     line, from Robert Richter

   - Fix include order for bison/flex-generated C files, from Ben
     Hutchings

   - Build fixes and documentation corrections from David Ahern

   - Assorted cleanups from Robert Richter

   - Let O= makes handle relative paths, from Steven Rostedt

   - perf script python fixes, from Feng Tang.

   - Initial bash completion support, from Frederic Weisbecker

   - Allow building without libelf, from Namhyung Kim.

   - Support DWARF CFI based unwind to have callchains when %bp based
     unwinding is not possible, from Jiri Olsa.

   - Symbol resolution fixes, while fixing support PPC64 files with an
     .opt ELF section was the end goal, several fixes for code that
     handles all architectures and cleanups are included, from Cody
     Schafer.

   - Assorted fixes for Documentation and build in 32 bit, from Robert
     Richter

   - Cache the libtraceevent event_format associated to each evsel
     early, so that we avoid relookups, i.e.  calling pevent_find_event
     repeatedly when processing tracepoint events.

     [ This is to reduce the surface contact with libtraceevents and
        make clear what is that the perf tools needs from that lib: so
        far parsing the common and per event fields.  ]

   - Don't stop the build if the audit libraries are not installed, fix
     from Namhyung Kim.

   - Fix bfd.h/libbfd detection with recent binutils, from Markus
     Trippelsdorf.

   - Improve warning message when libunwind devel packages not present,
     from Jiri Olsa"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (282 commits)
  perf trace: Add aliases for some syscalls
  perf probe: Print an enum type variable in "enum variable-name" format when showing accessible variables
  perf tools: Check libaudit availability for perf-trace builtin
  perf hists: Add missing period_* fields when collapsing a hist entry
  perf trace: New tool
  perf evsel: Export the event_format constructor
  perf evsel: Introduce rawptr() method
  perf tools: Use perf_evsel__newtp in the event parser
  perf evsel: The tracepoint constructor should store sys:name
  perf evlist: Introduce set_filter() method
  perf evlist: Renane set_filters method to apply_filters
  perf test: Add test to check we correctly parse and match syscall open parms
  perf evsel: Handle endianity in intval method
  perf evsel: Know if byte swap is needed
  perf tools: Allow handling a NULL cpu_map as meaning "all cpus"
  perf evsel: Improve tracepoint constructor setup
  tools lib traceevent: Fix error path on pevent_parse_event
  perf test: Fix build failure
  trace: Move trace event enable from fs_initcall to core_initcall
  tracing: Add an option for disabling markers
  ...

1 files changed, 337 insertions, 16 deletions

diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 1d592f5cbea9..484f26cc0c00 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -14,11 +14,13 @@
 #include "util/symbol.h"
 #include "util/thread_map.h"
 #include "util/pmu.h"
+#include "event-parse.h"
 #include "../../include/linux/hw_breakpoint.h"
 
 #include <sys/mman.h>
 
-static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym)
+static int vmlinux_matches_kallsyms_filter(struct map *map __maybe_unused,
+                                           struct symbol *sym)
 {
         bool *visited = symbol__priv(sym);
         *visited = true;
@@ -294,7 +296,7 @@ static int test__open_syscall_event(void)
                 goto out_thread_map_delete;
         }
 
-        if (perf_evsel__open_per_thread(evsel, threads, false, NULL) < 0) {
+        if (perf_evsel__open_per_thread(evsel, threads) < 0) {
                 pr_debug("failed to open counter: %s, "
                          "tweak /proc/sys/kernel/perf_event_paranoid?\n",
                          strerror(errno));
@@ -369,7 +371,7 @@ static int test__open_syscall_event_on_all_cpus(void)
                 goto out_thread_map_delete;
         }
 
-        if (perf_evsel__open(evsel, cpus, threads, false, NULL) < 0) {
+        if (perf_evsel__open(evsel, cpus, threads) < 0) {
                 pr_debug("failed to open counter: %s, "
                          "tweak /proc/sys/kernel/perf_event_paranoid?\n",
                          strerror(errno));
@@ -533,7 +535,7 @@ static int test__basic_mmap(void)
 
                 perf_evlist__add(evlist, evsels[i]);
 
-                if (perf_evsel__open(evsels[i], cpus, threads, false, NULL) < 0) {
+                if (perf_evsel__open(evsels[i], cpus, threads) < 0) {
                         pr_debug("failed to open counter: %s, "
                                  "tweak /proc/sys/kernel/perf_event_paranoid?\n",
                                  strerror(errno));
@@ -562,7 +564,7 @@ static int test__basic_mmap(void)
                         goto out_munmap;
                 }
 
-                err = perf_evlist__parse_sample(evlist, event, &sample, false);
+                err = perf_evlist__parse_sample(evlist, event, &sample);
                 if (err) {
                         pr_err("Can't parse sample, err = %d\n", err);
                         goto out_munmap;
@@ -710,7 +712,7 @@ static int test__PERF_RECORD(void)
         /*
          * Config the evsels, setting attr->comm on the first one, etc.
          */
-        evsel = list_entry(evlist->entries.next, struct perf_evsel, node);
+        evsel = perf_evlist__first(evlist);
         evsel->attr.sample_type |= PERF_SAMPLE_CPU;
         evsel->attr.sample_type |= PERF_SAMPLE_TID;
         evsel->attr.sample_type |= PERF_SAMPLE_TIME;
@@ -737,7 +739,7 @@ static int test__PERF_RECORD(void)
          * Call sys_perf_event_open on all the fds on all the evsels,
          * grouping them if asked to.
          */
-        err = perf_evlist__open(evlist, opts.group);
+        err = perf_evlist__open(evlist);
         if (err < 0) {
                 pr_debug("perf_evlist__open: %s\n", strerror(errno));
                 goto out_delete_evlist;
@@ -779,7 +781,7 @@ static int test__PERF_RECORD(void)
                                 if (type < PERF_RECORD_MAX)
                                         nr_events[type]++;
 
-                                err = perf_evlist__parse_sample(evlist, event, &sample, false);
+                                err = perf_evlist__parse_sample(evlist, event, &sample);
                                 if (err < 0) {
                                         if (verbose)
                                                 perf_event__fprintf(event, stderr);
@@ -996,7 +998,9 @@ static u64 mmap_read_self(void *addr)
 /*
  * If the RDPMC instruction faults then signal this back to the test parent task:
  */
-static void segfault_handler(int sig __used, siginfo_t *info __used, void *uc __used)
+static void segfault_handler(int sig __maybe_unused,
+                             siginfo_t *info __maybe_unused,
+                             void *uc __maybe_unused)
 {
         exit(-1);
 }
@@ -1023,14 +1027,16 @@ static int __test__rdpmc(void)
 
         fd = sys_perf_event_open(&attr, 0, -1, -1, 0);
         if (fd < 0) {
-                die("Error: sys_perf_event_open() syscall returned "
-                    "with %d (%s)\n", fd, strerror(errno));
+                pr_err("Error: sys_perf_event_open() syscall returned "
+                       "with %d (%s)\n", fd, strerror(errno));
+                return -1;
         }
 
         addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0);
         if (addr == (void *)(-1)) {
-                die("Error: mmap() syscall returned "
-                    "with (%s)\n", strerror(errno));
+                pr_err("Error: mmap() syscall returned with (%s)\n",
+                       strerror(errno));
+                goto out_close;
         }
 
         for (n = 0; n < 6; n++) {
@@ -1051,9 +1057,9 @@ static int __test__rdpmc(void)
         }
 
         munmap(addr, page_size);
-        close(fd);
-
         pr_debug("   ");
+out_close:
+        close(fd);
 
         if (!delta_sum)
                 return -1;
@@ -1092,6 +1098,309 @@ static int test__perf_pmu(void)
         return perf_pmu__test();
 }
 
+static int perf_evsel__roundtrip_cache_name_test(void)
+{
+        char name[128];
+        int type, op, err = 0, ret = 0, i, idx;
+        struct perf_evsel *evsel;
+        struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
+
+        if (evlist == NULL)
+                return -ENOMEM;
+
+        for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
+                for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
+                        /* skip invalid cache type */
+                        if (!perf_evsel__is_cache_op_valid(type, op))
+                                continue;
+
+                        for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
+                                __perf_evsel__hw_cache_type_op_res_name(type, op, i,
+                                                                        name, sizeof(name));
+                                err = parse_events(evlist, name, 0);
+                                if (err)
+                                        ret = err;
+                        }
+                }
+        }
+
+        idx = 0;
+        evsel = perf_evlist__first(evlist);
+
+        for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
+                for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
+                        /* skip invalid cache type */
+                        if (!perf_evsel__is_cache_op_valid(type, op))
+                                continue;
+
+                        for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
+                                __perf_evsel__hw_cache_type_op_res_name(type, op, i,
+                                                                        name, sizeof(name));
+                                if (evsel->idx != idx)
+                                        continue;
+
+                                ++idx;
+
+                                if (strcmp(perf_evsel__name(evsel), name)) {
+                                        pr_debug("%s != %s\n", perf_evsel__name(evsel), name);
+                                        ret = -1;
+                                }
+
+                                evsel = perf_evsel__next(evsel);
+                        }
+                }
+        }
+
+        perf_evlist__delete(evlist);
+        return ret;
+}
+
+static int __perf_evsel__name_array_test(const char *names[], int nr_names)
+{
+        int i, err;
+        struct perf_evsel *evsel;
+        struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
+
+        if (evlist == NULL)
+                return -ENOMEM;
+
+        for (i = 0; i < nr_names; ++i) {
+                err = parse_events(evlist, names[i], 0);
+                if (err) {
+                        pr_debug("failed to parse event '%s', err %d\n",
+                                 names[i], err);
+                        goto out_delete_evlist;
+                }
+        }
+
+        err = 0;
+        list_for_each_entry(evsel, &evlist->entries, node) {
+                if (strcmp(perf_evsel__name(evsel), names[evsel->idx])) {
+                        --err;
+                        pr_debug("%s != %s\n", perf_evsel__name(evsel), names[evsel->idx]);
+                }
+        }
+
+out_delete_evlist:
+        perf_evlist__delete(evlist);
+        return err;
+}
+
+#define perf_evsel__name_array_test(names) \
+        __perf_evsel__name_array_test(names, ARRAY_SIZE(names))
+
+static int perf_evsel__roundtrip_name_test(void)
+{
+        int err = 0, ret = 0;
+
+        err = perf_evsel__name_array_test(perf_evsel__hw_names);
+        if (err)
+                ret = err;
+
+        err = perf_evsel__name_array_test(perf_evsel__sw_names);
+        if (err)
+                ret = err;
+
+        err = perf_evsel__roundtrip_cache_name_test();
+        if (err)
+                ret = err;
+
+        return ret;
+}
+
+static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name,
+                                  int size, bool should_be_signed)
+{
+        struct format_field *field = perf_evsel__field(evsel, name);
+        int is_signed;
+        int ret = 0;
+
+        if (field == NULL) {
+                pr_debug("%s: \"%s\" field not found!\n", evsel->name, name);
+                return -1;
+        }
+
+        is_signed = !!(field->flags | FIELD_IS_SIGNED);
+        if (should_be_signed && !is_signed) {
+                pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n",
+                         evsel->name, name, is_signed, should_be_signed);
+                ret = -1;
+        }
+
+        if (field->size != size) {
+                pr_debug("%s: \"%s\" size (%d) should be %d!\n",
+                         evsel->name, name, field->size, size);
+                ret = -1;
+        }
+
+        return ret;
+}
+
+static int perf_evsel__tp_sched_test(void)
+{
+        struct perf_evsel *evsel = perf_evsel__newtp("sched", "sched_switch", 0);
+        int ret = 0;
+
+        if (evsel == NULL) {
+                pr_debug("perf_evsel__new\n");
+                return -1;
+        }
+
+        if (perf_evsel__test_field(evsel, "prev_comm", 16, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prev_pid", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prev_prio", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prev_state", 8, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "next_comm", 16, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "next_pid", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "next_prio", 4, true))
+                ret = -1;
+
+        perf_evsel__delete(evsel);
+
+        evsel = perf_evsel__newtp("sched", "sched_wakeup", 0);
+
+        if (perf_evsel__test_field(evsel, "comm", 16, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "pid", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "prio", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "success", 4, true))
+                ret = -1;
+
+        if (perf_evsel__test_field(evsel, "target_cpu", 4, true))
+                ret = -1;
+
+        return ret;
+}
+
+static int test__syscall_open_tp_fields(void)
+{
+        struct perf_record_opts opts = {
+                .target = {
+                        .uid = UINT_MAX,
+                        .uses_mmap = true,
+                },
+                .no_delay   = true,
+                .freq       = 1,
+                .mmap_pages = 256,
+                .raw_samples = true,
+        };
+        const char *filename = "/etc/passwd";
+        int flags = O_RDONLY | O_DIRECTORY;
+        struct perf_evlist *evlist = perf_evlist__new(NULL, NULL);
+        struct perf_evsel *evsel;
+        int err = -1, i, nr_events = 0, nr_polls = 0;
+
+        if (evlist == NULL) {
+                pr_debug("%s: perf_evlist__new\n", __func__);
+                goto out;
+        }
+
+        evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0);
+        if (evsel == NULL) {
+                pr_debug("%s: perf_evsel__newtp\n", __func__);
+                goto out_delete_evlist;
+        }
+
+        perf_evlist__add(evlist, evsel);
+
+        err = perf_evlist__create_maps(evlist, &opts.target);
+        if (err < 0) {
+                pr_debug("%s: perf_evlist__create_maps\n", __func__);
+                goto out_delete_evlist;
+        }
+
+        perf_evsel__config(evsel, &opts, evsel);
+
+        evlist->threads->map[0] = getpid();
+
+        err = perf_evlist__open(evlist);
+        if (err < 0) {
+                pr_debug("perf_evlist__open: %s\n", strerror(errno));
+                goto out_delete_evlist;
+        }
+
+        err = perf_evlist__mmap(evlist, UINT_MAX, false);
+        if (err < 0) {
+                pr_debug("perf_evlist__mmap: %s\n", strerror(errno));
+                goto out_delete_evlist;
+        }
+
+        perf_evlist__enable(evlist);
+
+        /*
+         * Generate the event:
+         */
+        open(filename, flags);
+
+        while (1) {
+                int before = nr_events;
+
+                for (i = 0; i < evlist->nr_mmaps; i++) {
+                        union perf_event *event;
+
+                        while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) {
+                                const u32 type = event->header.type;
+                                int tp_flags;
+                                struct perf_sample sample;
+
+                                ++nr_events;
+
+                                if (type != PERF_RECORD_SAMPLE)
+                                        continue;
+
+                                err = perf_evsel__parse_sample(evsel, event, &sample);
+                                if (err) {
+                                        pr_err("Can't parse sample, err = %d\n", err);
+                                        goto out_munmap;
+                                }
+
+                                tp_flags = perf_evsel__intval(evsel, &sample, "flags");
+
+                                if (flags != tp_flags) {
+                                        pr_debug("%s: Expected flags=%#x, got %#x\n",
+                                                 __func__, flags, tp_flags);
+                                        goto out_munmap;
+                                }
+
+                                goto out_ok;
+                        }
+                }
+
+                if (nr_events == before)
+                        poll(evlist->pollfd, evlist->nr_fds, 10);
+
+                if (++nr_polls > 5) {
+                        pr_debug("%s: no events!\n", __func__);
+                        goto out_munmap;
+                }
+        }
+out_ok:
+        err = 0;
+out_munmap:
+        perf_evlist__munmap(evlist);
+out_delete_evlist:
+        perf_evlist__delete(evlist);
+out:
+        return err;
+}
+
 static struct test {
         const char *desc;
         int (*func)(void);
@@ -1135,6 +1444,18 @@ static struct test {
                 .func = dso__test_data,
         },
         {
+                .desc = "roundtrip evsel->name check",
+                .func = perf_evsel__roundtrip_name_test,
+        },
+        {
+                .desc = "Check parsing of sched tracepoints fields",
+                .func = perf_evsel__tp_sched_test,
+        },
+        {
+                .desc = "Generate and check syscalls:sys_enter_open event fields",
+                .func = test__syscall_open_tp_fields,
+        },
+        {
                 .func = NULL,
         },
 };
@@ -1199,7 +1520,7 @@ static int perf_test__list(int argc, const char **argv)
         return 0;
 }
 
-int cmd_test(int argc, const char **argv, const char *prefix __used)
+int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused)
 {
         const char * const test_usage[] = {
         "perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",