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Subject[tip:perf/core] perf: Limit event refresh to sampling event
Commit-ID:  2e939d1da9b5628642314c1e68b4319e61263c94
Gitweb: http://git.kernel.org/tip/2e939d1da9b5628642314c1e68b4319e61263c94
Author: Franck Bui-Huu <fbuihuu@gmail.com>
AuthorDate: Tue, 23 Nov 2010 16:21:44 +0100
Committer: Ingo Molnar <mingo@elte.hu>
CommitDate: Fri, 26 Nov 2010 15:14:55 +0100

perf: Limit event refresh to sampling event

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>
---
kernel/perf_event.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 8806984..027c4d3 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -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);

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