commit 8ed92e51f99c2199c64cb33b4ba95ab12940a94c
author Ingo Molnar <mingo@elte.hu> Sun Oct 14 14:28:50 2012 +0200
committer Ingo Molnar <mingo@kernel.org> Tue Oct 16 10:05:27 2012 +0200
tree b7d067cc9db5379a0107e97a6b4dfe64afead461
parent 301a5cba2887d1f640e6d5184b05a6d7132017d5

sched: Add WAKEUP_PREEMPTION feature flag, on by default

As per the recent discussion with Mike and Linus, make it easier to
test with/without this feature. No change in default behavior.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-izoxq4haeg4mTognnDbwcevt@git.kernel.org

kernel/sched/features.h

diff --git a/kernel/sched/features.h b/kernel/sched/features.h
index eebefca..e68e69a 100644
--- a/kernel/sched/features.h
+++ b/kernel/sched/features.h
@@ -32,6 +32,11 @@
 SCHED_FEAT(CACHE_HOT_BUDDY, true)
 
 /*
+ * Allow wakeup-time preemption of the current task:
+ */
+SCHED_FEAT(WAKEUP_PREEMPTION, true)
+
+/*
  * Use arch dependent cpu power functions
  */
 SCHED_FEAT(ARCH_POWER, true)