sched: fix build error in kernel/sched_rt.c when RT_GROUP_SCHED && !SMP

Ingo found a build error in the scheduler when RT_GROUP_SCHED was
enabled, but SMP was not.  This patch rearranges the code such
that it is a little more streamlined and compiles under all permutations
of SMP, UP and RT_GROUP_SCHED.  It was boot tested on my 4-way x86_64
and it still passes preempt-test.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/sched.c b/kernel/sched.c
index dd1a1466c1e6..2b703f1fac3a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -466,7 +466,9 @@ struct rt_rq {
 #if defined CONFIG_SMP || defined CONFIG_RT_GROUP_SCHED
         struct {
                 int curr; /* highest queued rt task prio */
+#ifdef CONFIG_SMP
                 int next; /* next highest */
+#endif
         } highest_prio;
 #endif
 #ifdef CONFIG_SMP
@@ -8267,8 +8269,10 @@ static void init_rt_rq(struct rt_rq *rt_rq, struct rq *rq)
 
 #if defined CONFIG_SMP || defined CONFIG_RT_GROUP_SCHED
         rt_rq->highest_prio.curr = MAX_RT_PRIO;
+#ifdef CONFIG_SMP
         rt_rq->highest_prio.next = MAX_RT_PRIO;
 #endif
+#endif
 #ifdef CONFIG_SMP
         rt_rq->rt_nr_migratory = 0;
         rt_rq->overloaded = 0;