rwlock_acquire
rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_);
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
rwlock_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
rwlock_acquire(&rwlock->dep_map, 0, 1, _RET_IP_);
rwlock_acquire(&rwlock->dep_map, 0, 0, _RET_IP_);
rwlock_acquire(&rwlock->dep_map, subclass, 0, _RET_IP_);