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sysfs plugin: migrate to new plugin interface

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This commit is contained in:
Jan Vcelak 2013-01-28 17:27:32 +01:00
parent 7b96cbbfbc
commit 928a53718b
1 changed files with 30 additions and 46 deletions
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76
tuned/plugins/plugin_sysfs.py
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@ -13,59 +13,43 @@ class SysfsPlugin(base.Plugin):
Plugin for applying custom sysfs options, using specific plugins is preferred.
"""
_has_dynamic_options = True
# TODO: resolve possible conflicts with sysctl settings from other plugins
# TODO: resolve possible conflicts with sysctl settings from other plugins
def _post_init(self):
self._dynamic_tuning = False
self._sysfs_original = {}
self._sysfs = self._options
def __init__(self, *args, **kwargs):
super(self.__class__, self).__init__(*args, **kwargs)
self._has_dynamic_options = True
_sysfs = {}
for key, value in self._sysfs.iteritems():
_sysfs[os.path.normpath(key)] = value
self._sysfs = _sysfs
for key, value in self._sysfs.iteritems():
self._sysfs_original[key] = self._read_sysfs(key)
def _instance_init(self, instance):
instance._has_dynamic_tuning = False
instance._has_static_tuning = True
@classmethod
def tunable_devices(self):
return ["sysfs"]
instance._sysfs = dict(map(lambda (key, value): (os.path.normpath(key), value), instance.options.items()))
instance._sysfs_original = {}
@classmethod
def _get_default_options(cls):
return {}
def _instance_cleanup(self, instance):
pass
def _instance_apply_static(self, instance):
for key, value in instance._sysfs.iteritems():
if self._check_sysfs(key):
instance._sysfs_original[key] = self._read_sysfs(key)
self._write_sysfs(key, value)
else:
log.error("rejecting write to '%s' (not inside /sys)" % key)
def _instance_unapply_static(self, instance):
for key, value in instance._sysfs_original.iteritems():
self._write_sysfs(key, value)
def _check_sysfs(self, sysfs_file):
if not re.match(r"^/sys/.*", sysfs_file):
log.error("rejecting access to '%s', it doesn't seem to be sysfs tuning" % sysfs_file)
return False
return True
return re.match(r"^/sys/.*", sysfs_file)
def _read_sysfs(self, sysfs_file):
value = None
if self._check_sysfs(sysfs_file):
data = tuned.utils.commands.read_file(sysfs_file)
if len(data):
value = tuned.utils.commands.get_active_option(data, False)
return value
data = tuned.utils.commands.read_file(sysfs_file)
if len(data) > 0:
return tuned.utils.commands.get_active_option(data, False)
else:
return None
def _write_sysfs(self, sysfs_file, value):
if self._check_sysfs(sysfs_file):
return tuned.utils.commands.write_to_file(sysfs_file, value)
return False
def _apply_sysfs(self):
for key, value in self._sysfs.iteritems():
self._write_sysfs(key, value)
return True
def _revert_sysfs(self):
for key, value in self._sysfs_original.iteritems():
self._write_sysfs(key, value)
def cleanup_commands(self):
self._revert_sysfs()
def execute_commands(self):
self._apply_sysfs()
return tuned.utils.commands.write_to_file(sysfs_file, value)