10 void mutex_init(mutex_t *lock)  in mutex_init()  argument
12     atomic_set(&lock->count, 1);  in mutex_init()
13     spin_init(&lock->wait_lock);  in mutex_init()
14     list_init(&lock->wait_list);  in mutex_init()
23 static void __mutex_acquire(mutex_t *lock)  in __mutex_acquire()  argument
31 void mutex_lock(mutex_t *lock)  in mutex_lock()  argument
37         spin_lock(&lock->wait_lock);  in mutex_lock()
38         if (likely(mutex_is_locked(lock)))  in mutex_lock()
44                 spin_unlock(&lock->wait_lock);  in mutex_lock()
50             list_append(&lock->wait_list, &waiter->list);  in mutex_lock()
52             spin_unlock(&lock->wait_lock);  in mutex_lock()
58             atomic_dec(&lock->count);  in mutex_lock()
59             spin_unlock(&lock->wait_lock);  in mutex_lock()
70 void mutex_unlock(mutex_t *lock)  in mutex_unlock()  argument
72     if (unlikely(!mutex_is_locked(lock)))  in mutex_unlock()
75     spin_lock(&lock->wait_lock);  in mutex_unlock()
77     if (mutex_is_locked(lock))  in mutex_unlock()
79         if (!list_empty(&lock->wait_list))  in mutex_unlock()
80             wt = container_of(list_next(&lock->wait_list), struct mutex_waiter_t, list);  in mutex_unlock()
82         atomic_inc(&lock->count);  in mutex_unlock()
87     spin_unlock(&lock->wait_lock);  in mutex_unlock()
103 int mutex_trylock(mutex_t *lock)  in mutex_trylock()  argument
105     if (mutex_is_locked(lock))  in mutex_trylock()
108     spin_lock(&lock->wait_lock);  in mutex_trylock()
109     if (mutex_is_locked(lock))  in mutex_trylock()
111         spin_unlock(&lock->wait_lock);  in mutex_trylock()
116         atomic_dec(&lock->count);  in mutex_trylock()
117         spin_unlock(&lock->wait_lock);  in mutex_trylock()