Commit 529c1a9e authored Feb 20, 2019 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Feb 20, 2019

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: Jiri 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.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent ff7a4f98

tools/perf/util/session.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}