sched: fix list traversal to use _rcu variant (caea8a03) · Commits · 戴 / test

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

+1 −1

Original line number	Diff line number	Diff line
		@@ -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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