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 <[email protected]>
Suggested-by: Paul Turner <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Cc: KOSAKI Motohiro <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Andrew Morton <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions