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Peter Zijlstra authored
Large multi-threaded apps like to hit this using do_sys_times() and then queue up on the rq->lock. Avoid when possible. Larry reported ~20% performance increase his test case. Reported-by:
Larry Woodman <lwoodman@redhat.com> Suggested-by:
Paul Turner <pjt@google.com> Signed-off-by:
Peter Zijlstra <peterz@infradead.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20131111172925.GG26898@twins.programming.kicks-ass.netSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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