Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  lockdep: Fix lockdep_no_validate against IRQ states
  mutex: Make mutex_destroy() an inline function
  plist: Remove the need to supply locks to plist heads
  lockup detector: Fix reference to the non-existent CONFIG_DETECT_SOFTLOCKUP option

3 files changed, 6 insertions, 55 deletions

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index a940fe435aca..7f87217e9d1f 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -92,7 +92,7 @@ do {							\
 							\
 	__mutex_init((mutex), #mutex, &__key);		\
 } while (0)
-# define mutex_destroy(mutex)				do { } while (0)
+static inline void mutex_destroy(struct mutex *lock) {}
 #endif
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
diff --git a/include/linux/plist.h b/include/linux/plist.h
index c9b9f322c8d8..aa0fb390bd29 100644
--- a/include/linux/plist.h
+++ b/include/linux/plist.h
@@ -77,14 +77,9 @@
 
 #include <linux/kernel.h>
 #include <linux/list.h>
-#include <linux/spinlock_types.h>
 
 struct plist_head {
 	struct list_head node_list;
-#ifdef CONFIG_DEBUG_PI_LIST
-	raw_spinlock_t *rawlock;
-	spinlock_t *spinlock;
-#endif
 };
 
 struct plist_node {
@@ -93,37 +88,13 @@ struct plist_node {
 	struct list_head	node_list;
 };
 
-#ifdef CONFIG_DEBUG_PI_LIST
-# define PLIST_HEAD_LOCK_INIT(_lock)		.spinlock = _lock
-# define PLIST_HEAD_LOCK_INIT_RAW(_lock)	.rawlock = _lock
-#else
-# define PLIST_HEAD_LOCK_INIT(_lock)
-# define PLIST_HEAD_LOCK_INIT_RAW(_lock)
-#endif
-
-#define _PLIST_HEAD_INIT(head)				\
-	.node_list = LIST_HEAD_INIT((head).node_list)
-
 /**
  * PLIST_HEAD_INIT - static struct plist_head initializer
  * @head:	struct plist_head variable name
- * @_lock:	lock to initialize for this list
- */
-#define PLIST_HEAD_INIT(head, _lock)			\
-{							\
-	_PLIST_HEAD_INIT(head),				\
-	PLIST_HEAD_LOCK_INIT(&(_lock))			\
-}
-
-/**
- * PLIST_HEAD_INIT_RAW - static struct plist_head initializer
- * @head:	struct plist_head variable name
- * @_lock:	lock to initialize for this list
  */
-#define PLIST_HEAD_INIT_RAW(head, _lock)		\
+#define PLIST_HEAD_INIT(head)				\
 {							\
-	_PLIST_HEAD_INIT(head),				\
-	PLIST_HEAD_LOCK_INIT_RAW(&(_lock))		\
+	.node_list = LIST_HEAD_INIT((head).node_list)	\
 }
 
 /**
@@ -141,31 +112,11 @@ struct plist_node {
 /**
  * plist_head_init - dynamic struct plist_head initializer
  * @head:	&struct plist_head pointer
- * @lock:	spinlock protecting the list (debugging)
  */
 static inline void
-plist_head_init(struct plist_head *head, spinlock_t *lock)
+plist_head_init(struct plist_head *head)
 {
 	INIT_LIST_HEAD(&head->node_list);
-#ifdef CONFIG_DEBUG_PI_LIST
-	head->spinlock = lock;
-	head->rawlock = NULL;
-#endif
-}
-
-/**
- * plist_head_init_raw - dynamic struct plist_head initializer
- * @head:	&struct plist_head pointer
- * @lock:	raw_spinlock protecting the list (debugging)
- */
-static inline void
-plist_head_init_raw(struct plist_head *head, raw_spinlock_t *lock)
-{
-	INIT_LIST_HEAD(&head->node_list);
-#ifdef CONFIG_DEBUG_PI_LIST
-	head->rawlock = lock;
-	head->spinlock = NULL;
-#endif
 }
 
 /**
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 8d522ffeda33..de17134244f3 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -66,7 +66,7 @@ struct hrtimer_sleeper;
 
 #define __RT_MUTEX_INITIALIZER(mutexname) \
 	{ .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(mutexname.wait_lock) \
-	, .wait_list = PLIST_HEAD_INIT_RAW(mutexname.wait_list, mutexname.wait_lock) \
+	, .wait_list = PLIST_HEAD_INIT(mutexname.wait_list) \
 	, .owner = NULL \
 	__DEBUG_RT_MUTEX_INITIALIZER(mutexname)}
 
@@ -100,7 +100,7 @@ extern void rt_mutex_unlock(struct rt_mutex *lock);
 
 #ifdef CONFIG_RT_MUTEXES
 # define INIT_RT_MUTEXES(tsk)						\
-	.pi_waiters	= PLIST_HEAD_INIT(tsk.pi_waiters, tsk.pi_lock),	\
+	.pi_waiters	= PLIST_HEAD_INIT(tsk.pi_waiters),	\
 	INIT_RT_MUTEX_DEBUG(tsk)
 #else
 # define INIT_RT_MUTEXES(tsk)