Function watchdog_fire

freebsd/kern/kern_clock.c:805–833

* Handle a watchdog timeout by dumping interrupt information and * then either dropping to DDB or panicking. */

 * then either dropping to DDB or panicking.
 */
static void
watchdog_fire(void)
{
	int nintr;
	uint64_t inttotal;
	u_long *curintr;
	char *curname;

	curintr = intrcnt;
	curname = intrnames;
	inttotal = 0;
	nintr = sintrcnt / sizeof(u_long);

	printf("interrupt                   total\n");
	while (--nintr >= 0) {
		if (*curintr)
			printf("%-12s %20lu\n", curname, *curintr);
		curname += strlen(curname) + 1;
		inttotal += *curintr++;
	}
	printf("Total        %20ju\n", (uintmax_t)inttotal);

#if defined(KDB) && !defined(KDB_UNATTENDED)
	kdb_backtrace();
	kdb_enter(KDB_WHY_WATCHDOG, "watchdog timeout");
#else
	panic("watchdog timeout");
#endif
}