From: Hillf Danton The RT preempt check tests the wrong task if NEED_RESCHED is set. It currently checks the local CPU task. It is suppose to check the task that is running on the run queue we are about to wake another task on. Signed-off-by: Hillf Danton Link: http://lkml.kernel.org/r/BANLkTi=e=69xvJZ1+56xzuFyhmdN0hZHRQ@mail.gmail.com Reviewed-by: Yong Zhang Signed-off-by: Steven Rostedt --- kernel/sched_rt.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 88725c9..9b8d5dc 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 } -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/