1 #ifndef __LINUX_MUTEX_RT_H
2 #define __LINUX_MUTEX_RT_H
4 #ifndef __LINUX_MUTEX_H
5 #error "Please include mutex.h"
8 #include <linux/rtmutex.h>
10 /* FIXME: Just for __lockfunc */
11 #include <linux/spinlock.h>
15 #ifdef CONFIG_DEBUG_LOCK_ALLOC
16 struct lockdep_map dep_map;
20 #define __MUTEX_INITIALIZER(mutexname) \
22 .lock = __RT_MUTEX_INITIALIZER(mutexname.lock) \
23 __DEP_MAP_MUTEX_INITIALIZER(mutexname) \
26 #define DEFINE_MUTEX(mutexname) \
27 struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)
29 extern void __mutex_do_init(struct mutex *lock, const char *name, struct lock_class_key *key);
30 extern void __lockfunc _mutex_lock(struct mutex *lock);
31 extern int __lockfunc _mutex_lock_interruptible(struct mutex *lock);
32 extern int __lockfunc _mutex_lock_killable(struct mutex *lock);
33 extern void __lockfunc _mutex_lock_nested(struct mutex *lock, int subclass);
34 extern void __lockfunc _mutex_lock_nest_lock(struct mutex *lock, struct lockdep_map *nest_lock);
35 extern int __lockfunc _mutex_lock_interruptible_nested(struct mutex *lock, int subclass);
36 extern int __lockfunc _mutex_lock_killable_nested(struct mutex *lock, int subclass);
37 extern int __lockfunc _mutex_trylock(struct mutex *lock);
38 extern void __lockfunc _mutex_unlock(struct mutex *lock);
40 #define mutex_is_locked(l) rt_mutex_is_locked(&(l)->lock)
41 #define mutex_lock(l) _mutex_lock(l)
42 #define mutex_lock_interruptible(l) _mutex_lock_interruptible(l)
43 #define mutex_lock_killable(l) _mutex_lock_killable(l)
44 #define mutex_trylock(l) _mutex_trylock(l)
45 #define mutex_unlock(l) _mutex_unlock(l)
46 #define mutex_destroy(l) rt_mutex_destroy(&(l)->lock)
48 #ifdef CONFIG_DEBUG_LOCK_ALLOC
49 # define mutex_lock_nested(l, s) _mutex_lock_nested(l, s)
50 # define mutex_lock_interruptible_nested(l, s) \
51 _mutex_lock_interruptible_nested(l, s)
52 # define mutex_lock_killable_nested(l, s) \
53 _mutex_lock_killable_nested(l, s)
55 # define mutex_lock_nest_lock(lock, nest_lock) \
57 typecheck(struct lockdep_map *, &(nest_lock)->dep_map); \
58 _mutex_lock_nest_lock(lock, &(nest_lock)->dep_map); \
62 # define mutex_lock_nested(l, s) _mutex_lock(l)
63 # define mutex_lock_interruptible_nested(l, s) \
64 _mutex_lock_interruptible(l)
65 # define mutex_lock_killable_nested(l, s) \
66 _mutex_lock_killable(l)
67 # define mutex_lock_nest_lock(lock, nest_lock) mutex_lock(lock)
70 # define mutex_init(mutex) \
72 static struct lock_class_key __key; \
74 rt_mutex_init(&(mutex)->lock); \
75 __mutex_do_init((mutex), #mutex, &__key); \
78 # define __mutex_init(mutex, name, key) \
80 rt_mutex_init(&(mutex)->lock); \
81 __mutex_do_init((mutex), name, key); \