include/linux/spinlock_rt.h

10 extern void __rt_spin_lock_init(spinlock_t *lock, const char *name,
13 static inline void __rt_spin_lock_init(spinlock_t *lock, const char *name,
23 	rt_mutex_base_init(&(slock)->lock);			\
31 	rt_mutex_base_init(&(slock)->lock);			\
35 extern void rt_spin_lock(spinlock_t *lock);
36 extern void rt_spin_lock_nested(spinlock_t *lock, int subclass);
37 extern void rt_spin_lock_nest_lock(spinlock_t *lock, struct lockdep_map *nest_lock);
38 extern void rt_spin_unlock(spinlock_t *lock);
39 extern void rt_spin_lock_unlock(spinlock_t *lock);
40 extern int rt_spin_trylock_bh(spinlock_t *lock);
41 extern int rt_spin_trylock(spinlock_t *lock);
43 static __always_inline void spin_lock(spinlock_t *lock)
45 	rt_spin_lock(lock);
49 # define __spin_lock_nested(lock, subclass)				\
50 	rt_spin_lock_nested(lock, subclass)
52 # define __spin_lock_nest_lock(lock, nest_lock)				\
55 		rt_spin_lock_nest_lock(lock, &(nest_lock)->dep_map);	\
57 # define __spin_lock_irqsave_nested(lock, flags, subclass)	\
61 		__spin_lock_nested(lock, subclass);		\
70 # define __spin_lock_nested(lock, subclass)	spin_lock(((void)(subclass), (lock)))
71 # define __spin_lock_nest_lock(lock, subclass)	spin_lock(((void)(subclass), (lock)))
72 # define __spin_lock_irqsave_nested(lock, flags, subclass)	\
73 	spin_lock_irqsave(((void)(subclass), (lock)), flags)
76 #define spin_lock_nested(lock, subclass)		\
77 	__spin_lock_nested(lock, subclass)
79 #define spin_lock_nest_lock(lock, nest_lock)		\
80 	__spin_lock_nest_lock(lock, nest_lock)
82 #define spin_lock_irqsave_nested(lock, flags, subclass)	\
83 	__spin_lock_irqsave_nested(lock, flags, subclass)
85 static __always_inline void spin_lock_bh(spinlock_t *lock)
89 	rt_spin_lock(lock);
92 static __always_inline void spin_lock_irq(spinlock_t *lock)
94 	rt_spin_lock(lock);
97 #define spin_lock_irqsave(lock, flags)			 \
101 		spin_lock(lock);			 \
104 static __always_inline void spin_unlock(spinlock_t *lock)
106 	rt_spin_unlock(lock);
109 static __always_inline void spin_unlock_bh(spinlock_t *lock)
111 	rt_spin_unlock(lock);
115 static __always_inline void spin_unlock_irq(spinlock_t *lock)
117 	rt_spin_unlock(lock);
120 static __always_inline void spin_unlock_irqrestore(spinlock_t *lock,
123 	rt_spin_unlock(lock);
126 #define spin_trylock(lock)				\
127 	__cond_lock(lock, rt_spin_trylock(lock))
129 #define spin_trylock_bh(lock)				\
130 	__cond_lock(lock, rt_spin_trylock_bh(lock))
132 #define spin_trylock_irq(lock)				\
133 	__cond_lock(lock, rt_spin_trylock(lock))
135 #define __spin_trylock_irqsave(lock, flags)		\
141 	__locked = spin_trylock(lock);			\
145 #define spin_trylock_irqsave(lock, flags)		\
146 	__cond_lock(lock, __spin_trylock_irqsave(lock, flags))
148 #define spin_is_contended(lock)		(((void)(lock), 0))
150 static inline int spin_is_locked(spinlock_t *lock)
152 	return rt_mutex_base_is_locked(&lock->lock);
155 #define assert_spin_locked(lock) BUG_ON(!spin_is_locked(lock))