[PATCH v2 4/6] sched/dl: push task away if the deadline is equal to curr during wakeup

From: Wanpeng Li
Date: Thu Oct 30 2014 - 10:17:57 EST


This patch pushes task away if the dealine of the task is equal
to current during wake up. The same behavior as rt class.

Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxxxxxx>
---
kernel/sched/deadline.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 4c5fdf5..1c09751 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1511,7 +1511,7 @@ static void task_woken_dl(struct rq *rq, struct task_struct *p)
p->nr_cpus_allowed > 1 &&
dl_task(rq->curr) &&
(rq->curr->nr_cpus_allowed < 2 ||
- dl_entity_preempt(&rq->curr->dl, &p->dl))) {
+ !dl_entity_preempt(&p->dl, &rq->curr->dl))) {
push_dl_tasks(rq);
}
}
--
1.9.1

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