[PATCH v4 17/20] RT: restore the migratable conditional

[Steven Rostedt]

From: Gregory Haskins <ghaskins@xxxxxxxxxx>

We don't need to bother searching if the task cannot be migrated

Signed-off-by: Gregory Haskins <ghaskins@xxxxxxxxxx>
Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>
---

 kernel/sched_rt.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: linux-compile.git/kernel/sched_rt.c
===================================================================
--- linux-compile.git.orig/kernel/sched_rt.c	2007-11-20 19:53:11.000000000 -0500
+++ linux-compile.git/kernel/sched_rt.c	2007-11-20 19:53:13.000000000 -0500
@@ -173,7 +173,8 @@ static int select_task_rq_rt(struct task
 	 * that is just being woken and probably will have
 	 * cold cache anyway.
 	 */
-	if (unlikely(rt_task(rq->curr))) {
+	if (unlikely(rt_task(rq->curr)) &&
+	    (p->nr_cpus_allowed > 1)) {
 		int cpu = find_lowest_rq(p);
 
 		return (cpu == -1) ? task_cpu(p) : cpu;

-- 
-
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