diff options
-rw-r--r-- | include/linux/wait.h | 12 | ||||
-rw-r--r-- | kernel/wait.c | 8 |
2 files changed, 7 insertions, 13 deletions
diff --git a/include/linux/wait.h b/include/linux/wait.h index 794be7af58ae..b3b9048421d8 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h | |||
@@ -77,17 +77,7 @@ 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 | ||
80 | /* | 80 | extern void init_waitqueue_head(wait_queue_head_t *q); |
81 | * lockdep: we want one lock-class for all waitqueue locks. | ||
82 | */ | ||
83 | extern struct lock_class_key waitqueue_lock_key; | ||
84 | |||
85 | static inline void init_waitqueue_head(wait_queue_head_t *q) | ||
86 | { | ||
87 | spin_lock_init(&q->lock); | ||
88 | lockdep_set_class(&q->lock, &waitqueue_lock_key); | ||
89 | INIT_LIST_HEAD(&q->task_list); | ||
90 | } | ||
91 | 81 | ||
92 | static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p) | 82 | static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p) |
93 | { | 83 | { |
diff --git a/kernel/wait.c b/kernel/wait.c index a1d57aeb7f75..59a82f63275d 100644 --- a/kernel/wait.c +++ b/kernel/wait.c | |||
@@ -10,9 +10,13 @@ | |||
10 | #include <linux/wait.h> | 10 | #include <linux/wait.h> |
11 | #include <linux/hash.h> | 11 | #include <linux/hash.h> |
12 | 12 | ||
13 | struct lock_class_key waitqueue_lock_key; | 13 | void init_waitqueue_head(wait_queue_head_t *q) |
14 | { | ||
15 | spin_lock_init(&q->lock); | ||
16 | INIT_LIST_HEAD(&q->task_list); | ||
17 | } | ||
14 | 18 | ||
15 | EXPORT_SYMBOL(waitqueue_lock_key); | 19 | EXPORT_SYMBOL(init_waitqueue_head); |
16 | 20 | ||
17 | void fastcall add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait) | 21 | void fastcall add_wait_queue(wait_queue_head_t *q, wait_queue_t *wait) |
18 | { | 22 | { |