1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index e9395b7119e6..8abd752a0ebd 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -98,6 +98,7 @@ static void put_prev_task_rt(struct rq *rq, struct task_struct *p)
         p->se.exec_start = 0;
 }
 
+#ifdef CONFIG_SMP
 /*
  * Load-balancing iterator. Note: while the runqueue stays locked
  * during the whole iteration, the current task might be
@@ -202,6 +203,7 @@ move_one_task_rt(struct rq *this_rq, int this_cpu, struct rq *busiest,
         return iter_move_one_task(this_rq, this_cpu, busiest, sd, idle,
                                   &rt_rq_iterator);
 }
+#endif
 
 static void task_tick_rt(struct rq *rq, struct task_struct *p)
 {
@@ -245,8 +247,10 @@ const struct sched_class rt_sched_class = {
         .pick_next_task         = pick_next_task_rt,
         .put_prev_task          = put_prev_task_rt,
 
+#ifdef CONFIG_SMP
         .load_balance           = load_balance_rt,
         .move_one_task          = move_one_task_rt,
+#endif
 
         .set_curr_task          = set_curr_task_rt,
         .task_tick              = task_tick_rt,