Index: linux-2.6.19-rc5-mm1/kernel/sched.c
===================================================================
--- linux-2.6.19-rc5-mm1.orig/kernel/sched.c	2006-11-13 18:11:56.741580904 -0600
+++ linux-2.6.19-rc5-mm1/kernel/sched.c	2006-11-13 18:12:07.059847857 -0600
@@ -2904,6 +2904,9 @@ static void run_rebalance_domains(struct
 		if (!(sd->flags & SD_LOAD_BALANCE))
 			continue;
 
+		if (this_cpu != first_cpu(sd->span))
+			continue;
+
 		interval = sd->balance_interval;
 		if (idle != SCHED_IDLE)
 			interval *= sd->busy_factor;
@@ -2913,6 +2916,7 @@ static void run_rebalance_domains(struct
 		if (unlikely(!interval))
 			interval = 1;
 
+
 		if (sd->flags & SD_SERIALIZE) {
 			if (!spin_trylock(&balancing))
 				goto out;