Re: [PATCH]sched/rt.c: leaf_rt_rq_list contains empty queues. Fix it

[Kirill Tkhai <tkhai@yandex.ru>]

Second version. Add every not empty queue once. The patch:

Function __enqueue_rt_entity() adds an empty queue to leaf_rt_rq_list.

So, pick_next_highest_task_rt() picks empty queues. Fix it.

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
---
 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 944cb68..97a0954 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -1103,7 +1103,7 @@ static void __enqueue_rt_entity(struct sched_rt_entity *rt_se, bool head)
 	if (group_rq && (rt_rq_throttled(group_rq) || !group_rq->rt_nr_running))
 		return;
 
-	if (!rt_rq->rt_nr_running)
+	if (rt_rq->rt_nr_running == 1)
 		list_add_leaf_rt_rq(rt_rq);
 
 	if (head)