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authorIngo Molnar <mingo@elte.hu>2008-12-25 13:51:46 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-25 13:51:46 +0100
commit0b271ef4521756010675b1611bef20fd3096790d (patch)
tree2c9d22a2c74122a9904e533df27f41d63ffef394 /kernel/sched.c
parentb19b3c74c7bbec45a848631b8f970ac110665a01 (diff)
parent4a6908a3a050aacc9c3a2f36b276b46c0629ad91 (diff)
Merge commit 'v2.6.28' into core/core
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 558e5f28426..3e70963120a 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1453,9 +1453,10 @@ 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;
@@ -6585,7 +6586,9 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
req = list_entry(rq->migration_queue.next,
struct migration_req, list);
list_del_init(&req->list);
+ spin_unlock_irq(&rq->lock);
complete(&req->done);
+ spin_lock_irq(&rq->lock);
}
spin_unlock_irq(&rq->lock);
break;