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Commit 58e5ad1d authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar
Browse files

perf: Simplify __perf_event_read 



cpuctx is always active, task context is always active for
current

the previous condition verifies that if its a task context its
for current, hence we can assume ctx->is_active.

Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20091120212509.000272254@chello.nl>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 3dbebf15

kernel/perf_event.c

+2 −3
Original line number Original line Diff line number Diff line
@@ -1526,10 +1526,9 @@ static void __perf_event_read(void *info) 
	if (ctx->task && cpuctx->task_ctx != ctx)

	if (ctx->task && cpuctx->task_ctx != ctx)

		return;

		return;





	if (ctx->is_active)

	update_context_time(ctx);

	update_context_time(ctx);

	event->pmu->read(event);

	update_event_times(event);

	update_event_times(event);

	event->pmu->read(event);

}

}





static u64 perf_event_read(struct perf_event *event)

static u64 perf_event_read(struct perf_event *event)