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()
24 static void __mutex_acquire(mutex_t *lock)  in __mutex_acquire()  argument
32 void mutex_lock(mutex_t *lock)  in mutex_lock()  argument
38         spin_lock(&lock->wait_lock);  in mutex_lock()
39         if (likely(mutex_is_locked(lock)))  in mutex_lock()
45                 spin_unlock(&lock->wait_lock);  in mutex_lock()
51             list_append(&lock->wait_list, &waiter->list);  in mutex_lock()
53             spin_unlock(&lock->wait_lock);  in mutex_lock()
59             atomic_dec(&lock->count);  in mutex_lock()
60             spin_unlock(&lock->wait_lock);  in mutex_lock()
71 void mutex_unlock(mutex_t *lock)  in mutex_unlock()  argument
73     if (unlikely(!mutex_is_locked(lock)))  in mutex_unlock()
76     spin_lock(&lock->wait_lock);  in mutex_unlock()
78     if (mutex_is_locked(lock))  in mutex_unlock()
80         if (!list_empty(&lock->wait_list))  in mutex_unlock()
81             wt = container_of(list_next(&lock->wait_list), struct mutex_waiter_t, list);  in mutex_unlock()
83         atomic_inc(&lock->count);  in mutex_unlock()
88     spin_unlock(&lock->wait_lock);  in mutex_unlock()
104 int mutex_trylock(mutex_t *lock)  in mutex_trylock()  argument
106     if (mutex_is_locked(lock))  in mutex_trylock()
109     spin_lock(&lock->wait_lock);  in mutex_trylock()
110     if (mutex_is_locked(lock))  in mutex_trylock()
112         spin_unlock(&lock->wait_lock);  in mutex_trylock()
117         atomic_dec(&lock->count);  in mutex_trylock()
118         spin_unlock(&lock->wait_lock);  in mutex_trylock()