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perf: Limit event refresh to sampling event

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Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1290525705-6265-2-git-send-email-fbuihuu@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Franck Bui-Huu 2010-11-23 16:21:44 +01:00 committed by Ingo Molnar
parent 6c7e550f13
commit 2e939d1da9
1 changed files with 1 additions and 1 deletions
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2
kernel/perf_event.c
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@ -1073,7 +1073,7 @@ static int perf_event_refresh(struct perf_event *event, int refresh)
/*
* not supported on inherited events
*/
if (event->attr.inherit)
if (event->attr.inherit || !is_sampling_event(event))
return -EINVAL;
atomic_add(refresh, &event->event_limit);