Commit 7219d9a5 authored Jan 07, 2019 by Satya Durga Srinivasu Prabhala

sched/fair: Add rcu_read_lock() call in update_runtime_enabled()



Commit 7ebdf76d ("sched: Add snapshot of Window Assisted Load
Tracking (WALT)") removed rcu_read_lock() call from
update_runtime_enabled() which would lead to issues, fix it by
adding rcu_read_lock() call.

Change-Id: I3853fa31009da596e23fd559c55bc5c261fd0e0d
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>

parent 3e4cd081

kernel/sched/fair.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -5127,6 +5127,8 @@ static void __maybe_unused update_runtime_enabled(struct rq *rq)
		struct task_group *tg;

		lockdep_assert_held(&rq->lock);

		rcu_read_lock();
		list_for_each_entry_rcu(tg, &task_groups, list) {
		struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth;
		struct cfs_rq *cfs_rq = tg->cfs_rq[cpu_of(rq)];