From: Rafael J. Wysocki <rjw@sisk.pl>

migration_thread should not be freezable, or it will break hibernation and
suspend on SMP.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
 kernel/sched.c |    3 ---
 1 file changed, 3 deletions(-)

Index: linux-2.6.22/kernel/sched.c
===================================================================
--- linux-2.6.22.orig/kernel/sched.c
+++ linux-2.6.22/kernel/sched.c
@@ -5212,13 +5212,10 @@ static int migration_thread(void *data)
 	BUG_ON(rq->migration_thread != current);
 
 	set_current_state(TASK_INTERRUPTIBLE);
-	set_freezable();
 	while (!kthread_should_stop()) {
 		struct migration_req *req;
 		struct list_head *head;
 
-		try_to_freeze();
-
 		spin_lock_irq(&rq->lock);
 
 		if (cpu_is_offline(cpu)) {