cpu_unbind
(void) cpu_unbind(oldpp->cp_cpulist->cpu_id, B_FALSE);
if ((ret = cpu_unbind(cp->cpu_id, unbind_all_threads)) != 0) {
error = cpu_unbind(cp->cpu_id, forced);
extern int cpu_unbind(processorid_t cpu_id, boolean_t force);
ret = cpu_unbind(id, B_TRUE);
i = cpu_unbind(cp->cpu_id, B_TRUE);