mutex_init
#define mutex_init(m, a) __libc_mutex_init((m), (a))
#define mutex_init(m, a) __nothing
#define mutex_init(lock) mtx_init(lock, IPL_TTY)
#define mutex_init(lock) mutex_init(lock, MUTEX_DEFAULT, IPL_TTY)
mutex_init(kmutex_t *mtx, kmutex_type_t type, int ipl)
#define mutex_init(a, b, c) no_op()
#define mutex_init(a, b, c) __nothing
mutex_init(kmutex_t *mtx, kmutex_type_t type, int ipl)
mutex_init(kmutex_t *mtx, kmutex_type_t type, int ipl)
#define mutex_init(m, t, i)