perf: Optimize ctx_sched_out()

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Oleg noted that ctx_sched_out() disables the PMU even though it might
not actually do something, avoid needless PMU-disabling.

Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110409192141.665385503@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Peter Zijlstra 2011-04-09 21:17:40 +02:00 • committed by Ingo Molnar

parent f506b3dc0e

commit 075e0b0085

1 changed files with 2 additions and 2 deletions

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kernel/events/core.c

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