[RFC][PATCH 2/5] introduce wake_up_locked_nr() new API

[KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>]

introduce new API wake_up_locked_nr() and wake_up_locked_all().
it it similar as wake_up_nr() and wake_up_all(), but it doesn't lock.

Signed-off-by: Marcelo Tosatti <marcelo@kvack.org>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>

---
 include/linux/wait.h |    7 +++++--
 kernel/sched.c       |    5 +++--
 2 files changed, 8 insertions(+), 4 deletions(-)

Index: linux-2.6.24-rc6-mm1-memnotify/include/linux/wait.h
===================================================================
--- linux-2.6.24-rc6-mm1-memnotify.orig/include/linux/wait.h	2008-01-13 16:43:04.000000000 +0900
+++ linux-2.6.24-rc6-mm1-memnotify/include/linux/wait.h	2008-01-13 16:52:21.000000000 +0900
@@ -142,7 +142,7 @@ static inline void __remove_wait_queue(w
 }
 
 void FASTCALL(__wake_up(wait_queue_head_t *q, unsigned int mode, int nr, void *key));
-extern void FASTCALL(__wake_up_locked(wait_queue_head_t *q, unsigned int mode));
+void FASTCALL(__wake_up_locked(wait_queue_head_t *q, unsigned int mode, int nr, void *key));
 extern void FASTCALL(__wake_up_sync(wait_queue_head_t *q, unsigned int mode, int nr));
 void FASTCALL(__wake_up_bit(wait_queue_head_t *, void *, int));
 int FASTCALL(__wait_on_bit(wait_queue_head_t *, struct wait_bit_queue *, int (*)(void *), unsigned));
@@ -155,7 +155,10 @@ wait_queue_head_t *FASTCALL(bit_waitqueu
 #define wake_up(x)			__wake_up(x, TASK_NORMAL, 1, NULL)
 #define wake_up_nr(x, nr)		__wake_up(x, TASK_NORMAL, nr, NULL)
 #define wake_up_all(x)			__wake_up(x, TASK_NORMAL, 0, NULL)
-#define wake_up_locked(x)		__wake_up_locked((x), TASK_NORMAL)
+
+#define wake_up_locked(x)		__wake_up_locked((x), TASK_NORMAL, 1, NULL)
+#define wake_up_locked_nr(x, nr)	__wake_up_locked((x), TASK_NORMAL, nr, NULL)
+#define wake_up_locked_all(x)		__wake_up_locked((x), TASK_NORMAL, 0, NULL)
 
 #define wake_up_interruptible(x)	__wake_up(x, TASK_INTERRUPTIBLE, 1, NULL)
 #define wake_up_interruptible_nr(x, nr)	__wake_up(x, TASK_INTERRUPTIBLE, nr, NULL)
Index: linux-2.6.24-rc6-mm1-memnotify/kernel/sched.c
===================================================================
--- linux-2.6.24-rc6-mm1-memnotify.orig/kernel/sched.c	2008-01-13 16:42:22.000000000 +0900
+++ linux-2.6.24-rc6-mm1-memnotify/kernel/sched.c	2008-01-13 16:53:28.000000000 +0900
@@ -3837,9 +3837,10 @@ EXPORT_SYMBOL(__wake_up);
 /*
  * Same as __wake_up but called with the spinlock in wait_queue_head_t held.
  */
-void __wake_up_locked(wait_queue_head_t *q, unsigned int mode)
+void __wake_up_locked(wait_queue_head_t *q, unsigned int mode,
+		      int nr_exclusive, void *key)
 {
-	__wake_up_common(q, mode, 1, 0, NULL);
+	__wake_up_common(q, mode, nr_exclusive, 0, key);
 }
 
 /**


--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>