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-rw-r--r--kernel/sched_rt.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index dcdcad632fd9..4b87476a02d0 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -207,10 +207,15 @@ static void task_tick_rt(struct rq *rq, struct task_struct *p)
return;
p->time_slice = static_prio_timeslice(p->static_prio);
- set_tsk_need_resched(p);
- /* put it at the end of the queue: */
- requeue_task_rt(rq, p);
+ /*
+ * Requeue to the end of queue if we are not the only element
+ * on the queue:
+ */
+ if (p->run_list.prev != p->run_list.next) {
+ requeue_task_rt(rq, p);
+ set_tsk_need_resched(p);
+ }
}
static struct sched_class rt_sched_class __read_mostly = {