X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Flinux%2Fwait.h;h=0e686280450b3808eb2bbda7124772896b879ac7;hb=0fec171cdbd7763ef86cbaccb91f3708de6a9003;hp=544e855c7c02d9f6a10607a921d229e909a10efe;hpb=37224470c8c6d90a4062e76a08d4dc1fcf91fc89;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 544e855c7c02..0e686280450b 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -68,7 +68,7 @@ struct task_struct;
 	wait_queue_t name = __WAITQUEUE_INITIALIZER(name, tsk)
 
 #define __WAIT_QUEUE_HEAD_INITIALIZER(name) {				\
-	.lock		= SPIN_LOCK_UNLOCKED,				\
+	.lock		= __SPIN_LOCK_UNLOCKED(name.lock),		\
 	.task_list	= { &(name).task_list, &(name).task_list } }
 
 #define DECLARE_WAIT_QUEUE_HEAD(name) \
@@ -77,11 +77,16 @@ struct task_struct;
 #define __WAIT_BIT_KEY_INITIALIZER(word, bit)				\
 	{ .flags = word, .bit_nr = bit, }
 
-static inline void init_waitqueue_head(wait_queue_head_t *q)
-{
-	spin_lock_init(&q->lock);
-	INIT_LIST_HEAD(&q->task_list);
-}
+extern void init_waitqueue_head(wait_queue_head_t *q);
+
+#ifdef CONFIG_LOCKDEP
+# define __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) \
+	({ init_waitqueue_head(&name); name; })
+# define DECLARE_WAIT_QUEUE_HEAD_ONSTACK(name) \
+	wait_queue_head_t name = __WAIT_QUEUE_HEAD_INIT_ONSTACK(name)
+#else
+# define DECLARE_WAIT_QUEUE_HEAD_ONSTACK(name) DECLARE_WAIT_QUEUE_HEAD(name)
+#endif
 
 static inline void init_waitqueue_entry(wait_queue_t *q, struct task_struct *p)
 {
@@ -361,15 +366,15 @@ static inline void remove_wait_queue_locked(wait_queue_head_t *q,
 
 /*
  * These are the old interfaces to sleep waiting for an event.
- * They are racy.  DO NOT use them, use the wait_event* interfaces above.  
- * We plan to remove these interfaces during 2.7.
+ * They are racy.  DO NOT use them, use the wait_event* interfaces above.
+ * We plan to remove these interfaces.
  */
-extern void FASTCALL(sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(sleep_on_timeout(wait_queue_head_t *q,
-				      signed long timeout));
-extern void FASTCALL(interruptible_sleep_on(wait_queue_head_t *q));
-extern long FASTCALL(interruptible_sleep_on_timeout(wait_queue_head_t *q,
-						    signed long timeout));
+extern void sleep_on(wait_queue_head_t *q);
+extern long sleep_on_timeout(wait_queue_head_t *q,
+				      signed long timeout);
+extern void interruptible_sleep_on(wait_queue_head_t *q);
+extern long interruptible_sleep_on_timeout(wait_queue_head_t *q,
+					   signed long timeout);
 
 /*
  * Waitqueues which are removed from the waitqueue_head at wakeup time