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-rw-r--r--include/linux/wait.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 6788e1a4d4ca..cf3c2f5dba51 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -77,7 +77,14 @@ struct task_struct;
77#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \ 77#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \
78 { .flags = word, .bit_nr = bit, } 78 { .flags = word, .bit_nr = bit, }
79 79
80extern void init_waitqueue_head(wait_queue_head_t *q); 80extern void __init_waitqueue_head(wait_queue_head_t *q, struct lock_class_key *);
81
82#define init_waitqueue_head(q) \
83 do { \
84 static struct lock_class_key __key; \
85 \
86 __init_waitqueue_head((q), &__key); \
87 } while (0)
81 88
82#ifdef CONFIG_LOCKDEP 89#ifdef CONFIG_LOCKDEP
83# define __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) \ 90# define __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) \