def METHOD_NAME(processors_node):
    sysnode = '/sys/devices/system/cpu/'
    threads = processors_node.xpath("//thread")
    for thread in threads:
        cpu_id = get_node(thread, "cpu_id/text()")
        try:
            with open(sysnode + "cpu{cpu_id}/cpufreq/freqdomain_cpus", 'r') as f_node:
                freqdomain_cpus = f_node.read()
        except IOError:
            logging.info("No _PSD info for cpu {cpu_id}")
            freqdomain_cpus = cpu_id
        freqdomain_cpus.replace('\n','')
        add_child(thread, "freqdomain_cpus", freqdomain_cpus)