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-rw-r--r--kernel/sched/sched.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 01259611beb9..47b89a0fc6e5 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1693,6 +1693,11 @@ queue_balance_callback(struct rq *rq,
{
lockdep_assert_rq_held(rq);
+ /*
+ * Don't (re)queue an already queued item; nor queue anything when
+ * balance_push() is active, see the comment with
+ * balance_push_callback.
+ */
if (unlikely(head->next || rq->balance_callback == &balance_push_callback))
return;