X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=kernel%2Fsched.c;h=993bc74a290cd4ef32af5e76730e63ab4928739f;hb=ec98ce480ada787f2cfbd696980ff3564415505b;hp=204d0662b438a5831fa1578bab3ea119050c45bc;hpb=3496f92beb9aa99ef21fccc154a36c7698e9c538;p=linux-2.6-block.git

diff --git a/kernel/sched.c b/kernel/sched.c
index 204d0662b438..993bc74a290c 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1455,9 +1455,10 @@ static int task_hot(struct task_struct *p, u64 now, struct sched_domain *sd);
 static unsigned long cpu_avg_load_per_task(int cpu)
 {
 	struct rq *rq = cpu_rq(cpu);
+	unsigned long nr_running = ACCESS_ONCE(rq->nr_running);
 
-	if (rq->nr_running)
-		rq->avg_load_per_task = rq->load.weight / rq->nr_running;
+	if (nr_running)
+		rq->avg_load_per_task = rq->load.weight / nr_running;
 	else
 		rq->avg_load_per_task = 0;
 
@@ -7805,13 +7806,14 @@ static int dattrs_equal(struct sched_domain_attr *cur, int idx_cur,
  *
  * The passed in 'doms_new' should be kmalloc'd. This routine takes
  * ownership of it and will kfree it when done with it. If the caller
- * failed the kmalloc call, then it can pass in doms_new == NULL,
- * and partition_sched_domains() will fallback to the single partition
- * 'fallback_doms', it also forces the domains to be rebuilt.
+ * failed the kmalloc call, then it can pass in doms_new == NULL &&
+ * ndoms_new == 1, and partition_sched_domains() will fallback to
+ * the single partition 'fallback_doms', it also forces the domains
+ * to be rebuilt.
  *
- * If doms_new==NULL it will be replaced with cpu_online_map.
- * ndoms_new==0 is a special case for destroying existing domains.
- * It will not create the default domain.
+ * If doms_new == NULL it will be replaced with cpu_online_map.
+ * ndoms_new == 0 is a special case for destroying existing domains,
+ * and it will not create the default domain.
  *
  * Call with hotplug lock held
  */