locking, sched: Give waitqueue spinlocks their own lockdep classes

[firefly-linux-kernel-4.4.55.git] / kernel / wait.c

diff --git a/kernel/wait.c b/kernel/wait.c
index ea7c3b4275cf362f75cee939aa7861f7673b95cc..c4bd3d825f35c8c8dd7ed4831cd5fee5fe6a6b9a 100644 (file)
--- a/kernel/wait.c
+++ b/kernel/wait.c
@@ -10,13 +10,14 @@
 #include <linux/wait.h>
 #include <linux/hash.h>
 
-void init_waitqueue_head(wait_queue_head_t *q)
+void __init_waitqueue_head(wait_queue_head_t *q, struct lock_class_key *key)
 {
        spin_lock_init(&q->lock);
+       lockdep_set_class(&q->lock, key);
        INIT_LIST_HEAD(&q->task_list);
 }
 
-EXPORT_SYMBOL(init_waitqueue_head);
+EXPORT_SYMBOL(__init_waitqueue_head);
 
 void add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait)
 {