Commit 529c1a9e authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo

perf session: Don't report zero period samples for slave events

There's no reason to deliver a sample with zero period.  It means there
was no value for slave event since its last group leader sample.
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-2-jolsa@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ff7a4f98
......@@ -1202,6 +1202,13 @@ static int deliver_sample_value(struct perf_evlist *evlist,
return 0;
}
/*
* There's no reason to deliver sample
* for zero period, bail out.
*/
if (!sample->period)
return 0;
return tool->sample(tool, event, sample, sid->evsel, machine);
}
......
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