X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;ds=sidebyside;f=kernel%2Fsched_fair.c;h=5ad4440f0fc44798b84417fa56463dd19ad81267;hb=d05a788f2279056a518d412c6391322ef11366e0;hp=98345e45b059ac665e13ce534a6fbb8a3460c5cf;hpb=3af4182cc5be7d5505f9801ee3297373f1872446;p=~andy%2Flinux

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 98345e45b05..5ad4440f0fc 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -492,6 +492,8 @@ static void update_curr(struct cfs_rq *cfs_rq)
 	 * overflow on 32 bits):
 	 */
 	delta_exec = (unsigned long)(now - curr->exec_start);
+	if (!delta_exec)
+		return;
 
 	__update_curr(cfs_rq, curr, delta_exec);
 	curr->exec_start = now;
@@ -1345,12 +1347,11 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int sync)
 {
 	struct task_struct *curr = rq->curr;
 	struct sched_entity *se = &curr->se, *pse = &p->se;
+	struct cfs_rq *cfs_rq = task_cfs_rq(curr);
 
-	if (unlikely(rt_prio(p->prio))) {
-		struct cfs_rq *cfs_rq = task_cfs_rq(curr);
+	update_curr(cfs_rq);
 
-		update_rq_clock(rq);
-		update_curr(cfs_rq);
+	if (unlikely(rt_prio(p->prio))) {
 		resched_task(curr);
 		return;
 	}