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| author | Peter Zijlstra | 2013-11-11 18:21:56 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2013-11-13 13:33:54 +0100 |
| commit | 911b2898b3c9fe0048e9485ad1629ed4fce330fd (patch) | |
| tree | b430d3ef975f60b4c19caf211ea025cc4fa173a1 /arch/x86/platform/Makefile | |
| parent | sched/numa: Cure update_numa_stats() vs. hotplug (diff) | |
| download | kernel-qcow2-linux-911b2898b3c9fe0048e9485ad1629ed4fce330fd.tar.gz kernel-qcow2-linux-911b2898b3c9fe0048e9485ad1629ed4fce330fd.tar.xz kernel-qcow2-linux-911b2898b3c9fe0048e9485ad1629ed4fce330fd.zip | |
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 'arch/x86/platform/Makefile')
0 files changed, 0 insertions, 0 deletions