GIF89a;
Direktori : /lib/python2.7/site-packages/tuned/plugins/ |
Current File : //lib/python2.7/site-packages/tuned/plugins/plugin_usb.py |
from . import base from .decorators import * import tuned.logs from tuned.utils.commands import commands import glob log = tuned.logs.get() class USBPlugin(base.Plugin): """ Plugin for tuning various options of USB subsystem. """ def _init_devices(self): self._devices_supported = True self._free_devices = set() self._assigned_devices = set() for device in self._hardware_inventory.get_devices("usb").match_property("DEVTYPE", "usb_device"): self._free_devices.add(device.sys_name) self._cmd = commands() def _get_device_objects(self, devices): return [self._hardware_inventory.get_device("usb", x) for x in devices] @classmethod def _get_config_options(self): return { "autosuspend" : None, } def _instance_init(self, instance): instance._has_static_tuning = True instance._has_dynamic_tuning = False def _instance_cleanup(self, instance): pass def _autosuspend_sysfile(self, device): return "/sys/bus/usb/devices/%s/power/autosuspend" % device @command_set("autosuspend", per_device=True) def _set_autosuspend(self, value, device, sim): enable = self._option_bool(value) if enable is None: return None val = "1" if enable else "0" if not sim: sys_file = self._autosuspend_sysfile(device) self._cmd.write_to_file(sys_file, val) return val @command_get("autosuspend") def _get_autosuspend(self, device, ignore_missing=False): sys_file = self._autosuspend_sysfile(device) return self._cmd.read_file(sys_file, no_error=ignore_missing).strip()