Index: MM-2.6.X/kernel/sched.c
===================================================================
--- MM-2.6.X.orig/kernel/sched.c	2006-02-12 11:24:48.000000000 +1100
+++ MM-2.6.X/kernel/sched.c	2006-02-12 11:35:40.000000000 +1100
@@ -735,6 +735,19 @@ static inline unsigned long biased_load(
 {
 	return (wload * NICE_TO_BIAS_PRIO(0)) / SCHED_LOAD_SCALE;
 }
+
+/* get the average biased load per runnable task for a run queue */
+static inline unsigned long avg_biased_load(runqueue_t *rq)
+{
+	/*
+	 * When I'm convinced that this won't be called with a zero nr_running
+	 * and that it can't change during the call this can be simplified.
+	 * For the time being and for proof of concept let's paly it safe.
+	 */
+	unsigned long n = rq->nr_running;
+
+	return n ? rq->prio_bias / n : 0;
+}
 #else
 static inline void set_bias_prio(task_t *p)
 {
@@ -2116,7 +2129,7 @@ find_busiest_group(struct sched_domain *
 		unsigned long tmp;
 
 		if (max_load - this_load >= SCHED_LOAD_SCALE*2) {
-			*imbalance = NICE_TO_BIAS_PRIO(0);
+			*imbalance = avg_biased_load(busiest);
 			return busiest;
 		}
 
@@ -2149,7 +2162,7 @@ find_busiest_group(struct sched_domain *
 		if (pwr_move <= pwr_now)
 			goto out_balanced;
 
-		*imbalance = NICE_TO_BIAS_PRIO(0);
+		*imbalance = avg_biased_load(busiest);
 		return busiest;
 	}