diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2013-11-11 17:21:56 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-11-13 12:33:54 (GMT) |
| commit | 911b2898b3c9fe0048e9485ad1629ed4fce330fd (patch) | |
| tree | b430d3ef975f60b4c19caf211ea025cc4fa173a1 /Documentation/mmc | |
| parent | 5eca82a9ac2c961cfbd26a4b6f43e6e3747a71dd (diff) | |
| download | linux-911b2898b3c9fe0048e9485ad1629ed4fce330fd.tar.xz | |
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 <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.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/mmc')
0 files changed, 0 insertions, 0 deletions