Messages in this thread Patch in this message | | | Date | Fri, 29 Jan 2010 09:29:06 GMT | From | tip-bot for Peter Zijlstra <> | Subject | [tip:perf/core] perf_event: x86: Optimize x86_pmu_disable() |
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Commit-ID: 6c9687abeb24d5b7aae7db5be070c2139ad29e29 Gitweb: http://git.kernel.org/tip/6c9687abeb24d5b7aae7db5be070c2139ad29e29 Author: Peter Zijlstra <a.p.zijlstra@chello.nl> AuthorDate: Mon, 25 Jan 2010 11:57:25 +0100 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Fri, 29 Jan 2010 09:01:43 +0100
perf_event: x86: Optimize x86_pmu_disable()
x86_pmu_disable() removes the event from the cpuc->event_list[], however since an event can only be on that list once, stop looking after we found it.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu> --- arch/x86/kernel/cpu/perf_event.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 33c889f..66de282 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -1884,6 +1884,7 @@ static void x86_pmu_disable(struct perf_event *event) cpuc->event_list[i-1] = cpuc->event_list[i]; --cpuc->n_events; + break; } } perf_event_update_userpage(event);
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