cpu_intr_count
if (ncpus_online <= 1 || pp->cp_ncpus <= 1 || cpu_intr_count(cp) < 2)
if ((cpu_intr_count(cp) > 1) && (cpu_intr_next(cp) != NULL)) {
int cpu_intr_count(cpu_t *cp); /* count # of CPUs handling intrs */