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| author | Namhyung Kim <namhyung@kernel.org> | 2016-12-08 23:47:53 +0900 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-12-15 16:25:44 -0300 |
| commit | a4b2b6f56e0cfe729cf89318d44b6a875b31d95a (patch) | |
| tree | 1c7a76628da82dfa1bef191fc882daa3490137ff /tools | |
| parent | 699b5b920db04a6ff5c03a519e4c182aeb350952 (diff) | |
| download | linux-stable-a4b2b6f56e0cfe729cf89318d44b6a875b31d95a.tar.gz linux-stable-a4b2b6f56e0cfe729cf89318d44b6a875b31d95a.tar.bz2 linux-stable-a4b2b6f56e0cfe729cf89318d44b6a875b31d95a.zip | |
perf sched timehist: Skip non-idle events when necessary
Sometimes it only focuses on idle-related events like upcoming idle-hist
feature. In this case we don't want to see other event to reduce noise.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20161208144755.16673-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/builtin-sched.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index dc83b803ca54..c8e7848e71a7 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -2190,7 +2190,9 @@ static struct thread *timehist_get_thread(struct perf_sched *sched, } static bool timehist_skip_sample(struct perf_sched *sched, - struct thread *thread) + struct thread *thread, + struct perf_evsel *evsel, + struct perf_sample *sample) { bool rc = false; @@ -2199,10 +2201,19 @@ static bool timehist_skip_sample(struct perf_sched *sched, sched->skipped_samples++; } + if (sched->idle_hist) { + if (strcmp(perf_evsel__name(evsel), "sched:sched_switch")) + rc = true; + else if (perf_evsel__intval(evsel, sample, "prev_pid") != 0 && + perf_evsel__intval(evsel, sample, "next_pid") != 0) + rc = true; + } + return rc; } static void timehist_print_wakeup_event(struct perf_sched *sched, + struct perf_evsel *evsel, struct perf_sample *sample, struct machine *machine, struct thread *awakened) @@ -2215,8 +2226,8 @@ static void timehist_print_wakeup_event(struct perf_sched *sched, return; /* show wakeup unless both awakee and awaker are filtered */ - if (timehist_skip_sample(sched, thread) && - timehist_skip_sample(sched, awakened)) { + if (timehist_skip_sample(sched, thread, evsel, sample) && + timehist_skip_sample(sched, awakened, evsel, sample)) { return; } @@ -2261,7 +2272,7 @@ static int timehist_sched_wakeup_event(struct perf_tool *tool, /* show wakeups if requested */ if (sched->show_wakeups && !perf_time__skip_sample(&sched->ptime, sample->time)) - timehist_print_wakeup_event(sched, sample, machine, thread); + timehist_print_wakeup_event(sched, evsel, sample, machine, thread); return 0; } @@ -2288,8 +2299,8 @@ static void timehist_print_migration_event(struct perf_sched *sched, if (thread == NULL) return; - if (timehist_skip_sample(sched, thread) && - timehist_skip_sample(sched, migrated)) { + if (timehist_skip_sample(sched, thread, evsel, sample) && + timehist_skip_sample(sched, migrated, evsel, sample)) { return; } @@ -2374,7 +2385,7 @@ static int timehist_sched_change_event(struct perf_tool *tool, goto out; } - if (timehist_skip_sample(sched, thread)) + if (timehist_skip_sample(sched, thread, evsel, sample)) goto out; tr = thread__get_runtime(thread); |