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perf evsel: Ensure reserved member of PERF_SAMPLE_CPU is zero in perf_event__synthesize_sample()

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PERF_SAMPLE_CPU contains the cpu number in the first 4 bytes and the
second 4 bytes are reserved. Ensure the reserved bytes are zero in
perf_event__synthesize_sample().

Signed-off-by: Adrian Hunter <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Adrian Hunter 2018-01-16 15:14:51 +02:00 • committed by Arnaldo Carvalho de Melo
commit 59a87fdad1
1 changed files with 1 additions and 0 deletions
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tools/perf/util/evsel.c
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@ -2533,6 +2533,7 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
if (type & PERF_SAMPLE_CPU) {
u.val32[0] = sample->cpu;
u.val32[1] = 0;
if (swapped) {
/*
* Inverse of what is done in perf_evsel__parse_sample