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from . import base from .decorators import * import os import errno import tuned.logs from tuned.consts import ACPI_DIR log = tuned.logs.get() class ACPIPlugin(base.Plugin): """ `acpi`:: Configures the ACPI driver. + The only currently supported option is [option]`platform_profile`, which sets the ACPI platform profile sysfs attribute, a generic power/performance preference API for other drivers. Multiple profiles can be specified, separated by `|`. The first available profile is selected. + -- .Selecting a platform profile ==== ---- [acpi] platform_profile=balanced|low-power ---- Using this option, *TuneD* will try to set the platform profile to `balanced`. If that fails, it will try to set it to `low-power`. ==== -- """ def __init__(self, *args, **kwargs): super(ACPIPlugin, self).__init__(*args, **kwargs) @classmethod def _get_config_options(cls): return {"platform_profile": None} def _instance_init(self, instance): instance._has_static_tuning = True instance._has_dynamic_tuning = False def _instance_cleanup(self, instance): pass @classmethod def _platform_profile_choices_path(cls): return os.path.join(ACPI_DIR, "platform_profile_choices") @classmethod def _platform_profile_path(cls): return os.path.join(ACPI_DIR, "platform_profile") @command_set("platform_profile") def _set_platform_profile(self, profiles, sim, remove): if not os.path.isfile(self._platform_profile_path()): log.debug("ACPI platform_profile is not supported on this system") return None profiles = [profile.strip() for profile in profiles.split('|')] avail_profiles = set(self._cmd.read_file(self._platform_profile_choices_path()).split()) for profile in profiles: if profile in avail_profiles: if not sim: log.info("Setting platform_profile to '%s'" % profile) self._cmd.write_to_file(self._platform_profile_path(), profile, \ no_error=[errno.ENOENT] if remove else False) return profile log.warn("Requested platform_profile '%s' unavailable" % profile) log.error("Failed to set platform_profile. Is the value in the profile correct?") return None @command_get("platform_profile") def _get_platform_profile(self, ignore_missing=False): if not os.path.isfile(self._platform_profile_path()): log.debug("ACPI platform_profile is not supported on this system") return None return self._cmd.read_file(self._platform_profile_path()).strip()
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