import os import fnmatch from . import base from tuned.utils.commands import commands from tuned import logs log = logs.get() cmd = commands() SYSFS_DIR = "/sys/devices/system/cpu/intel_uncore_frequency/" class package2uncores(base.Function): """ Provides uncore device list for a package (socket) """ def __init__(self): super(package2uncores, self).__init__("package2uncores", 0) def execute(self, args): if not super(package2uncores, self).execute(args): return None if len(args) <= 0: return None try: all_uncores = os.listdir(SYSFS_DIR) except OSError: return None # For new TPMI interface use only uncore devices tpmi_devices = fnmatch.filter(all_uncores, 'uncore*') if len(tpmi_devices) > 0: is_tpmi = True all_uncores = tpmi_devices else: is_tpmi = False devices = [] for uncore in all_uncores: if is_tpmi: f = SYSFS_DIR + uncore + "/package_id" if not os.path.exists(f): log.warning("File '%s' does not exist" % f) continue value = cmd.read_file(f) else: # uncore string is in form: package_NN_die_MM, do not expect more than 99 packages value = uncore[8:10] try: package_id = int(value) except ValueError: log.warning("Invalid package id '%s' for uncore '%s'" % (value, uncore)) continue for package_pattern in args: try: this_package_id = int(package_pattern) except ValueError: if fnmatch.fnmatch(value, package_pattern): devices.append(uncore) else: if package_id == this_package_id: devices.append(uncore) return ",".join(devices) if len(devices) > 0 else None