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

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* '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
This commit is contained in:
Linus Torvalds
2011-07-22 16:43:21 -07:00
parent 6d16d6d9bb efbe2eee6d
commit 75b56ec294
11 changed files with 20 additions and 71 deletions
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2
include/linux/mutex.h
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@@ -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

55
include/linux/plist.h
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@@ -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) \
#define PLIST_HEAD_INIT(head) \
{ \
_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) \
{ \
_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
}
/**

4
include/linux/rtmutex.h
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@@ -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)