* Davidlohr Bueso <davidl...@hp.com> wrote:
> On Wed, 2013-11-13 at 09:25 -0800, tip-bot for Peter Zijlstra wrote:
> > Commit-ID: 911b2898b3c9fe0048e9485ad1629ed4fce330fd
> > Gitweb:
> > http://git.kernel.org/tip/911b2898b3c9fe0048e9485ad1629ed4fce330fd
> > Author: Peter Zijlstra <pet...@infradead.org>
> > AuthorDate: Mon, 11 Nov 2013 18:21:56 +0100
> > Committer: Ingo Molnar <mi...@kernel.org>
> > CommitDate: Wed, 13 Nov 2013 13:33:54 +0100
> >
> > sched: Optimize task_sched_runtime()
> >
> > 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 <lwood...@redhat.com>
> > Suggested-by: Paul Turner <p...@google.com>
> > Signed-off-by: Peter Zijlstra <pet...@infradead.org>
> > Cc: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com>
> > Cc: Linus Torvalds <torva...@linux-foundation.org>
> > Cc: Andrew Morton <a...@linux-foundation.org>
> > Link:
> > http://lkml.kernel.org/r/20131111172925.gg26...@twins.programming.kicks-ass.net
> > Signed-off-by: Ingo Molnar <mi...@kernel.org>
>
> For what it's worth:
>
> Tested-by: Davidlohr Bueso <davidl...@hp.com>
Thanks for the testing - the change is upstream already and unless it
causes regressions it will be part of the v3.13 kernel.
Thanks,
Ingo
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