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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-11-20 22:19:51 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-21 14:11:38 +0100 |
| commit | f6f83785222b0ee037f7be90731f62a649292b5e (patch) | |
| tree | fcafe2c4addc41ac2d65eb29c45ff2cee240efc3 /kernel/perf_event.c | |
| parent | 02ffdbc866c8b1c8644601e9aa6155700eed4c91 (diff) | |
| download | kernel-crypto-f6f83785222b0ee037f7be90731f62a649292b5e.tar.gz kernel-crypto-f6f83785222b0ee037f7be90731f62a649292b5e.tar.xz kernel-crypto-f6f83785222b0ee037f7be90731f62a649292b5e.zip | |
perf: Optimize __perf_event_read()
Both callers actually have IRQs disabled, no need doing so
again.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20091120212508.863685796@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/perf_event.c')
| -rw-r--r-- | kernel/perf_event.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 65f4dab0ce6..e66f6c400d1 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -1517,7 +1517,6 @@ static void __perf_event_read(void *info) struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context); struct perf_event *event = info; struct perf_event_context *ctx = event->ctx; - unsigned long flags; /* * If this is a task context, we need to check whether it is @@ -1529,12 +1528,10 @@ static void __perf_event_read(void *info) if (ctx->task && cpuctx->task_ctx != ctx) return; - local_irq_save(flags); if (ctx->is_active) update_context_time(ctx); event->pmu->read(event); update_event_times(event); - local_irq_restore(flags); } static u64 perf_event_read(struct perf_event *event) |