On Tue, 2015-02-24 at 11:12 -0500, Steven Rostedt wrote: > On Sun, 1 Feb 2015 09:52:24 -0800 > tip-bot for Tim Chen <[email protected]> wrote: > > > Commit-ID: 80e3d87b2c5582db0ab5e39610ce3707d97ba409 > > Gitweb: > > http://git.kernel.org/tip/80e3d87b2c5582db0ab5e39610ce3707d97ba409 > > Author: Tim Chen <[email protected]> > > AuthorDate: Fri, 12 Dec 2014 15:38:12 -0800 > > Committer: Ingo Molnar <[email protected]> > > CommitDate: Fri, 30 Jan 2015 19:38:49 +0100 > > > > sched/rt: Reduce rq lock contention by eliminating locking of non-feasible > > target > > > > This patch adds checks that prevens futile attempts to move rt tasks > > to a CPU with active tasks of equal or higher priority. > > > > This reduces run queue lock contention and improves the performance of > > a well known OLTP benchmark by 0.7%. > > > > Signed-off-by: Tim Chen <[email protected]> > > Signed-off-by: Peter Zijlstra (Intel) <[email protected]> > > Cc: Shawn Bohrer <[email protected]> > > Cc: Suruchi Kadu <[email protected]> > > Cc: Doug Nelson<[email protected]> > > Cc: Steven Rostedt <[email protected]> > > Cc: Linus Torvalds <[email protected]> > > Link: > > http://lkml.kernel.org/r/[email protected] > > Signed-off-by: Ingo Molnar <[email protected]> > > I see this has been added to mainline already. I think this should go > to stable as well. As far back as it applies. I'll even add this to the > stable-rt if need be. But I rather pull it into stable-rt via the > stable branches. [...]
I've queued this up for 3.2, thanks. Ben. -- Ben Hutchings The world is coming to an end. Please log off.
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