_kern_mutex_unblock
extern status_t _kern_mutex_unblock(int32* mutex, uint32 flags);
_kern_mutex_unblock(&lock->lock, 0);
_kern_mutex_unblock((int32*)mutex, flags | B_USER_MUTEX_UNBLOCK_ALL);
_kern_mutex_unblock((int32*)&cond->lock, flags);
_kern_mutex_unblock((int32*)&mutex->lock,
_kern_mutex_unblock((int32*)&mutex, 0);