20 #define arch_spin_is_locked(x)	(READ_ONCE((x)->lock) != 0)
22 static inline void arch_spin_unlock(arch_spinlock_t *lock)  in arch_spin_unlock()  argument
24 	smp_store_release(&lock->lock, 0);  in arch_spin_unlock()
27 static inline int arch_spin_trylock(arch_spinlock_t *lock)  in arch_spin_trylock()  argument
34 		: "=r" (busy), "+A" (lock->lock)  in arch_spin_trylock()
41 static inline void arch_spin_lock(arch_spinlock_t *lock)  in arch_spin_lock()  argument
44 		if (arch_spin_is_locked(lock))  in arch_spin_lock()
47 		if (arch_spin_trylock(lock))  in arch_spin_lock()
54 static inline void arch_read_lock(arch_rwlock_t *lock)  in arch_read_lock()  argument
65 		: "+A" (lock->lock), "=&r" (tmp)  in arch_read_lock()
69 static inline void arch_write_lock(arch_rwlock_t *lock)  in arch_write_lock()  argument
80 		: "+A" (lock->lock), "=&r" (tmp)  in arch_write_lock()
84 static inline int arch_read_trylock(arch_rwlock_t *lock)  in arch_read_trylock()  argument
96 		: "+A" (lock->lock), "=&r" (busy)  in arch_read_trylock()
102 static inline int arch_write_trylock(arch_rwlock_t *lock)  in arch_write_trylock()  argument
114 		: "+A" (lock->lock), "=&r" (busy)  in arch_write_trylock()
120 static inline void arch_read_unlock(arch_rwlock_t *lock)  in arch_read_unlock()  argument
125 		: "+A" (lock->lock)  in arch_read_unlock()
130 static inline void arch_write_unlock(arch_rwlock_t *lock)  in arch_write_unlock()  argument
132 	smp_store_release(&lock->lock, 0);  in arch_write_unlock()