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perf sched timehist: Skip non-idle events when necessary

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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 <[email protected]>
Acked-by: David Ahern <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Namhyung Kim 2016-12-08 23:47:53 +09:00 • committed by Arnaldo Carvalho de Melo
commit a4b2b6f56e
1 changed files with 18 additions and 7 deletions
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25
tools/perf/builtin-sched.c
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@ -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);