get_sys_cpuids
static int get_sys_cpuids(cpuid_t **cpuids, int *ncpuids);
if (get_sys_cpuids(&newcpus, &newncpus) == -1)
if (get_sys_cpuids(&oldcpus, &oldncpus) == -1) {
if (get_sys_cpuids(&newcpus, &newncpus) == -1) {