sched: fix sched_rt.c:join/leave_domain

fix build bug in sched_rt.c:join/leave_domain and make them only
be included on SMP builds.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 16 insertions, 17 deletions

diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index b049e5110ee..3ea0cae513d 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -767,6 +767,20 @@ static void set_cpus_allowed_rt(struct task_struct *p, cpumask_t *new_mask)
         p->nr_cpus_allowed = weight;
 }
 
+/* Assumes rq->lock is held */
+static void join_domain_rt(struct rq *rq)
+{
+        if (rq->rt.overloaded)
+                rt_set_overload(rq);
+}
+
+/* Assumes rq->lock is held */
+static void leave_domain_rt(struct rq *rq)
+{
+        if (rq->rt.overloaded)
+                rt_clear_overload(rq);
+}
+
 #else /* CONFIG_SMP */
 # define schedule_tail_balance_rt(rq)   do { } while (0)
 # define schedule_balance_rt(rq, prev)  do { } while (0)
@@ -799,20 +813,6 @@ static void task_tick_rt(struct rq *rq, struct task_struct *p)
         }
 }
 
-/* Assumes rq->lock is held */
-static void join_domain_rt(struct rq *rq)
-{
-        if (rq->rt.overloaded)
-                rt_set_overload(rq);
-}
-
-/* Assumes rq->lock is held */
-static void leave_domain_rt(struct rq *rq)
-{
-        if (rq->rt.overloaded)
-                rt_clear_overload(rq);
-}
-
 static void set_curr_task_rt(struct rq *rq)
 {
         struct task_struct *p = rq->curr;
@@ -838,11 +838,10 @@ const struct sched_class rt_sched_class = {
         .load_balance           = load_balance_rt,
         .move_one_task          = move_one_task_rt,
         .set_cpus_allowed       = set_cpus_allowed_rt,
+        .join_domain            = join_domain_rt,
+        .leave_domain           = leave_domain_rt,
 #endif
 
         .set_curr_task          = set_curr_task_rt,
         .task_tick              = task_tick_rt,
-
-        .join_domain            = join_domain_rt,
-        .leave_domain           = leave_domain_rt,
 };