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void __mutex_init(struct mutex *lock, const char *name, struct lock_class_key *key){	atomic_set(&lock->count, 1);	spin_lock_init(&lock->wait_lock);	INIT_LIST_HEAD(&lock->wait_list);	mutex_clear_owner(lock);#ifdef CONFIG_MUTEX_SPIN_ON_OWNER	osq_lock_init(&lock->osq);#endif	debug_mutex_init(lock, name, key);}EXPORT_SYMBOL(__mutex_init);

#define __MUTEX_INITIALIZER(lockname) \		{ .count = ATOMIC_INIT(1) \		, .wait_lock = __SPIN_LOCK_UNLOCKED(lockname.wait_lock) \		, .wait_list = LIST_HEAD_INIT(lockname.wait_list) \		__DEBUG_MUTEX_INITIALIZER(lockname) \		__DEP_MAP_MUTEX_INITIALIZER(lockname) }#define DEFINE_MUTEX(mutexname) \	struct mutex mutexname = __MUTEX_INITIALIZER(mutexname)

/** * mutex_init - initialize the mutex * @mutex: the mutex to be initialized * * Initialize the mutex to unlocked state. * * It is not allowed to initialize an already locked mutex. */# define mutex_init(mutex) \do {
 							\	static struct lock_class_key __key;		\							\	__mutex_init((mutex), #mutex, &__key);		\} while (0)

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