Function intr_priority

freebsd/kern/kern_intr.c:119–154

Map an interrupt type to an ithread priority. */

/* Map an interrupt type to an ithread priority. */
u_char
intr_priority(enum intr_type flags)
{
	u_char pri;

	flags &= (INTR_TYPE_TTY | INTR_TYPE_BIO | INTR_TYPE_NET |
	    INTR_TYPE_CAM | INTR_TYPE_MISC | INTR_TYPE_CLK | INTR_TYPE_AV);
	switch (flags) {
	case INTR_TYPE_TTY:
		pri = PI_TTY;
		break;
	case INTR_TYPE_BIO:
		pri = PI_DISK;
		break;
	case INTR_TYPE_NET:
		pri = PI_NET;
		break;
	case INTR_TYPE_CAM:
		pri = PI_DISK;
		break;
	case INTR_TYPE_AV:
		pri = PI_AV;
		break;
	case INTR_TYPE_CLK:
		pri = PI_REALTIME;
		break;
	case INTR_TYPE_MISC:
		pri = PI_DULL;          /* don't care */
		break;
	default:
		/* We didn't specify an interrupt level. */
		panic("intr_priority: no interrupt type in flags");
	}

	return pri;
}

/*
 * Update an ithread based on the associated intr_event.