cpu_find_by_instance
int cpu_find_by_instance(int instance, phandle *prom_node, int *mid);
err = cpu_find_by_instance(0, &cpu_node, NULL);
while (!cpu_find_by_instance(ncpus, NULL, NULL))
for (i = 0; !cpu_find_by_instance(i, NULL, &cpuid); i++) {
while (!cpu_find_by_instance(instance, NULL, &mid)) {
while (!cpu_find_by_instance(cpu, NULL, &mid)) {
cpu_find_by_instance(i, &cpu_node, NULL);
for (i = 0; !cpu_find_by_instance(i, NULL, &mid); i++)