1 files changed, 3 insertions, 0 deletions

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index bc8ee999381..22999b257ad 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1872,6 +1872,9 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int wake_
         int scale = cfs_rq->nr_running >= sched_nr_latency;
         int next_buddy_marked = 0;
 
+        if (unlikely(rt_prio(p->prio)) || p->policy == SCHED_LITMUS)
+                goto preempt;
+
         if (unlikely(se == pse))
                 return;