1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/sched_idletask.c b/kernel/sched_idletask.c
index 586b06ca30aa..bf9c25c15b8b 100644
--- a/kernel/sched_idletask.c
+++ b/kernel/sched_idletask.c
@@ -37,6 +37,7 @@ static void put_prev_task_idle(struct rq *rq, struct task_struct *prev)
 {
 }
 
+#ifdef CONFIG_SMP
 static unsigned long
 load_balance_idle(struct rq *this_rq, int this_cpu, struct rq *busiest,
                   unsigned long max_load_move,
@@ -52,6 +53,7 @@ move_one_task_idle(struct rq *this_rq, int this_cpu, struct rq *busiest,
 {
         return 0;
 }
+#endif
 
 static void task_tick_idle(struct rq *rq, struct task_struct *curr)
 {
@@ -76,8 +78,10 @@ const struct sched_class idle_sched_class = {
         .pick_next_task         = pick_next_task_idle,
         .put_prev_task          = put_prev_task_idle,
 
+#ifdef CONFIG_SMP
         .load_balance           = load_balance_idle,
         .move_one_task          = move_one_task_idle,
+#endif
 
         .set_curr_task          = set_curr_task_idle,
         .task_tick              = task_tick_idle,