diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index f365e66b3d49..3d4020a9ba1b 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -136,6 +136,11 @@ static void dequeue_pushable_task(struct rq *rq, struct task_struct *p)
 	plist_del(&p->pushable_tasks, &rq->rt.pushable_tasks);
 }
 
+static inline int has_pushable_tasks(struct rq *rq)
+{
+	return !plist_head_empty(&rq->rt.pushable_tasks);
+}
+
 #else
 
 static inline void enqueue_pushable_task(struct rq *rq, struct task_struct *p)
@@ -1064,11 +1069,6 @@ static struct task_struct *_pick_next_task_rt(struct rq *rq)
 	return p;
 }
 
-static inline int has_pushable_tasks(struct rq *rq)
-{
-	return !plist_head_empty(&rq->rt.pushable_tasks);
-}
-
 static struct task_struct *pick_next_task_rt(struct rq *rq)
 {
 	struct task_struct *p = _pick_next_task_rt(rq);
@@ -1077,11 +1077,13 @@ static struct task_struct *pick_next_task_rt(struct rq *rq)
 	if (p)
 		dequeue_pushable_task(rq, p);
 
+#ifdef CONFIG_SMP
 	/*
 	 * We detect this state here so that we can avoid taking the RQ
 	 * lock again later if there is no need to push
 	 */
 	rq->post_schedule = has_pushable_tasks(rq);
+#endif
 
 	return p;
 }