Index: linux-2.6.30-bfs/kernel/sched_bfs.c
===================================================================
--- linux-2.6.30-bfs.orig/kernel/sched_bfs.c	2009-09-05 16:30:21.427327518 +1000
+++ linux-2.6.30-bfs/kernel/sched_bfs.c	2009-09-05 16:34:05.097201400 +1000
@@ -1754,14 +1754,14 @@
  */
 void scheduler_tick(void)
 {
-	unsigned long long now = sched_clock();
 	int cpu = smp_processor_id();
 	struct rq *rq = cpu_rq(cpu);
 	struct task_struct *p;
 
+	sched_clock_tick();
 	time_lock_rq(rq);
 	p = rq->curr;
-	update_cpu_clock(p, rq, now, 1);
+	update_cpu_clock(p, rq, sched_clock(), 1);
 	if (!rq_idle(rq))
 		task_running_tick(rq, p);
 	else