sched: Revert commit 4c6c4e38c4e9 ("sched/core: Fix endless loop in pick_next_task()")

This reverts commit 4c6c4e38c4e9 ("sched/core: Fix endless loop in
pick_next_task()"), which is not necessary after ("sched/rt: Substract number
of tasks of throttled queues from rq->nr_running").

Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Reviewed-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
[conflict resolution with stop task checking patch]
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1394835307.18748.34.camel@HP-250-G1-Notebook-PC
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 2add019ddbd0..7795e292f4c9 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -493,6 +493,11 @@ static void sched_rt_rq_dequeue(struct rt_rq *rt_rq)
                 dequeue_rt_entity(rt_se);
 }
 
+static inline int rt_rq_throttled(struct rt_rq *rt_rq)
+{
+        return rt_rq->rt_throttled && !rt_rq->rt_nr_boosted;
+}
+
 static int rt_se_boosted(struct sched_rt_entity *rt_se)
 {
         struct rt_rq *rt_rq = group_rt_rq(rt_se);
@@ -569,6 +574,11 @@ static inline void sched_rt_rq_dequeue(struct rt_rq *rt_rq)
         dequeue_top_rt_rq(rt_rq);
 }
 
+static inline int rt_rq_throttled(struct rt_rq *rt_rq)
+{
+        return rt_rq->rt_throttled;
+}
+
 static inline const struct cpumask *sched_rt_period_mask(void)
 {
         return cpu_online_mask;