From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Sat, 9 Apr 2011 19:17:40 +0000 (+0200)
Subject: perf: Optimize ctx_sched_out()
X-Git-Tag: v3.1-rc1~299^2~54
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=075e0b00857e166dcc3e39037a1fc5a90acac709;p=pandora-kernel.git

perf: Optimize ctx_sched_out()

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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