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authorHillf Danton <dhillf@gmail.com>2011-06-14 18:36:24 -0400
committerIngo Molnar <mingo@elte.hu>2011-06-15 09:50:32 +0200
commit8dd0de8be31b4b966d17750a0b10df2f575c91ac (patch)
tree991b9dddf6ef092f94bba5af7609c13c8d7b113c /kernel/sched_rt.c
parentLinux 3.0-rc3 (diff)
downloadlinux-dev-8dd0de8be31b4b966d17750a0b10df2f575c91ac.tar.xz
linux-dev-8dd0de8be31b4b966d17750a0b10df2f575c91ac.zip
sched: Fix need_resched() when checking peempt
The RT preempt check tests the wrong task if NEED_RESCHED is set. It currently checks the local CPU task. It is supposed to check the task that is running on the runqueue we are about to wake another task on. Signed-off-by: Hillf Danton <dhillf@gmail.com> Reviewed-by: Yong Zhang <yong.zhang0@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20110614223657.450239027@goodmis.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_rt.c')
-rw-r--r--kernel/sched_rt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 88725c939e0b..9b8d5dce946e 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1096,7 +1096,7 @@ static void check_preempt_curr_rt(struct rq *rq, struct task_struct *p, int flag
* to move current somewhere else, making room for our non-migratable
* task.
*/
- if (p->prio == rq->curr->prio && !need_resched())
+ if (p->prio == rq->curr->prio && !test_tsk_need_resched(rq->curr))
check_preempt_equal_prio(rq, p);
#endif
}