mtx_lock_spin
mtx_lock_spin(&ah_regser_mtx);
mtx_lock_spin(&ah_regser_mtx);
mtx_lock_spin(&ah_regser_mtx);
mtx_lock_spin(&ah_regser_mtx);
mtx_lock_spin(&(tq)->tq_mutex); \
mtx_lock_spin(_m); \
void mtx_lock_spin(struct mtx* mutex);
mtx_lock_spin(mutex);
mtx_lock_spin(&(tq)->tq_mutex); \