It is inappropriate to allow anything more than the absolute minimum run on
wrong CPU. This may have been causing hangs on suspend to ram.

-ck

Index: linux-2.6.36-ck2/kernel/sched_bfs.c
===================================================================
--- linux-2.6.36-ck2.orig/kernel/sched_bfs.c	2010-12-01 09:16:21.336527687 +1100
+++ linux-2.6.36-ck2/kernel/sched_bfs.c	2010-12-01 15:18:16.112469768 +1100
@@ -1313,10 +1313,10 @@
 		return;
 	}
 
-	if (online_cpus(p))
+	if (likely(online_cpus(p)))
 		cpus_and(tmp, cpu_online_map, p->cpus_allowed);
 	else
-		(cpumask_copy(&tmp, &cpu_online_map));
+		return;
 
 	latest_deadline = 0;
 	highest_prio = -1;
@@ -1480,6 +1480,7 @@
 	struct rq *rq = task_rq(p);
 	bool success = false;
 
+	WARN_ON(rq != this_rq());
 	BUG_ON(p == current);
 	lockdep_assert_held(&grq.lock);
 
@@ -2764,7 +2765,7 @@
 		prev->last_ran = rq->clock;
 
 		/* Task changed affinity off this CPU */
-		if (needs_other_cpu(prev, cpu))
+		if (unlikely(!cpu_isset(cpu, prev->cpus_allowed)))
 			resched_suitable_idle(prev);
 		else if (!deactivate) {
 			if (!queued_notrunning()) {