Commit-ID: 63342411efd2d9350ad405205da036cd45ed1640 Gitweb: http://git.kernel.org/tip/63342411efd2d9350ad405205da036cd45ed1640 Author: Peter Zijlstra <pet...@infradead.org> AuthorDate: Mon, 5 May 2014 11:49:16 +0200 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 7 May 2014 13:44:18 +0200
perf: Validate locking assumption Document and validate the locking assumption of event_sched_in(). Signed-off-by: Peter Zijlstra <pet...@infradead.org> Cc: Arnaldo Carvalho de Melo <a...@kernel.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Paul Mackerras <pau...@samba.org> Cc: Vince Weaver <vincent.wea...@maine.edu> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/n/tip-sybq1publ9xt5no77cwvi...@git.kernel.org Signed-off-by: Ingo Molnar <mi...@kernel.org> --- kernel/events/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 819ffc0..0de1997 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -1678,6 +1678,8 @@ event_sched_in(struct perf_event *event, u64 tstamp = perf_event_time(event); int ret = 0; + lockdep_assert_held(&ctx->lock); + if (event->state <= PERF_EVENT_STATE_OFF) return 0; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
