[PATCH] fix for CPU scheduler load distribution

From: Ingo Molnar <mingo@elte.hu>

It makes hot-balancing happen in the 'busy tick' case as well, which should
spread out processes more agressively.

kernel/sched.c

@@ -1047,7 +1047,7 @@ static void load_balance(runqueue_t *this_rq, int idle, unsigned long cpumask)
 	 */
 
 #define CAN_MIGRATE_TASK(p,rq,this_cpu)					\
-	((jiffies - (p)->last_run > cache_decay_ticks) &&	\
+	((!idle || (jiffies - (p)->last_run > cache_decay_ticks)) &&	\
 		!task_running(rq, p) &&					\
 			((p)->cpus_allowed & (1UL << (this_cpu))))