[patch] sched: fix active load balance

[Siddha, Suresh B]

Recent changes to active load balance (sched2-fix-smt-scheduling-problems.patch
in -mm) is not resulting in any task movement from busiest to target_cpu.
Attached patch(ontop of -mm) fixes this issue.

Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>

--- linux-2.6.12-rc2-mm3/kernel/sched.c	2005-04-11 23:08:30.875103512 -0700
+++ linux/kernel/sched.c	2005-04-13 10:44:37.400829992 -0700
@@ -2131,7 +2131,7 @@
  */
 static void active_load_balance(runqueue_t *busiest_rq, int busiest_cpu)
 {
-	struct sched_domain *tmp = NULL, *sd;
+	struct sched_domain *sd;
 	runqueue_t *target_rq;
 	int target_cpu = busiest_rq->push_cpu;
 
@@ -2152,13 +2152,10 @@
 	double_lock_balance(busiest_rq, target_rq);
 
 	/* Search for an sd spanning us and the target CPU. */
-	for_each_domain(target_cpu, sd) {
+	for_each_domain(target_cpu, sd)
 		if ((sd->flags & SD_LOAD_BALANCE) &&
-			cpu_isset(busiest_cpu, sd->span)) {
-				sd = tmp;
+			cpu_isset(busiest_cpu, sd->span))
 				break;
-		}
-	}
 
 	if (unlikely(sd == NULL))
 		goto out;
-
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