cpuinfo_id
n = cpuinfo_id(i, CPUINFO_LVL_NODE);
n = cpuinfo_id(i, CPUINFO_LVL_CORE);
n = cpuinfo_id(i, CPUINFO_LVL_PROC);
id = cpuinfo_id(cpu, level);
id = cpuinfo_id(cpu, level);