CDEV_MAJOR
SYSINIT(altqdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,altq_drvinit,NULL)
destroy_dev(makedev(CDEV_MAJOR, type));
/* maj */ CDEV_MAJOR,
dev = makedev(CDEV_MAJOR, 0);
SYSINIT(bktrdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,bktr_drvinit,NULL)