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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2008-11-04 21:25:08 +0100
committerIngo Molnar <mingo@elte.hu>2008-11-05 10:30:13 +0100
commitd95f98d0691d3aba5e35850011946a08c9b36428 (patch)
tree51cef12b6ad712379b63b04bd5e16292e0bbe8f0 /kernel/sched_fair.c
parentf4b6755fb37595da3630d1d6fc130ea6888cd48f (diff)
downloadlinux-d95f98d0691d3aba5e35850011946a08c9b36428.tar.bz2
sched: fix fair preempt check
Impact: fix cross-class preemption Inter-class wakeup preemptions should go on class order. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_fair.c')
-rw-r--r--kernel/sched_fair.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 6167336a2372..ebd6de8d17fd 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1329,6 +1329,9 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int sync)
return;
}
+ if (unlikely(p->sched_class != &fair_sched_class))
+ return;
+
if (unlikely(se == pse))
return;