From caea8a03702c147e8ae90da0801e7ba8297b1d46 Mon Sep 17 00:00:00 2001
From: Chris Friesen <cfriesen@nortel.com>
Date: Mon, 22 Sep 2008 11:06:09 -0600
Subject: [PATCH] sched: fix list traversal to use _rcu variant
load_balance_fair() calls rcu_read_lock() but then traverses the list
using the regular list traversal routine. This patch converts the
list traversal to use the _rcu version.
Signed-off-by: Chris Friesen <cfriesen@nortel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/sched_fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 7328383690f1..3b89aa6594a9 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1521,7 +1521,7 @@ load_balance_fair(struct rq *this_rq, int this_cpu, struct rq *busiest,
rcu_read_lock();
update_h_load(busiest_cpu);
- list_for_each_entry(tg, &task_groups, list) {
+ list_for_each_entry_rcu(tg, &task_groups, list) {
struct cfs_rq *busiest_cfs_rq = tg->cfs_rq[busiest_cpu];
unsigned long busiest_h_load = busiest_cfs_rq->h_load;
unsigned long busiest_weight = busiest_cfs_rq->load.weight;
--
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