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✏️ hotplug.py

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from . import base
import tuned.consts as consts
import tuned.logs

log = tuned.logs.get()

class Plugin(base.Plugin):
	"""
	Base class for plugins with device hotpluging support.
	"""

def __init__(self, *args, **kwargs):
		super(Plugin, self).__init__(*args, **kwargs)

def cleanup(self):
		super(Plugin, self).cleanup()
		self._hardware_events_cleanup()

def _hardware_events_init(self):
		pass

def _hardware_events_cleanup(self):
		pass

def _init_devices(self):
		self._hardware_events_init()

def _hardware_events_callback(self, event, device):
		if event == "add":
			log.info("device '%s' added" % device.sys_name)
			self._add_device(device.sys_name)
		elif event == "remove":
			log.info("device '%s' removed" % device.sys_name)
			self._remove_device(device.sys_name)

def _add_device_process(self, instance, device_name):
		log.info("instance %s: adding new device %s" % (instance.name, device_name))
		self._assigned_devices.add(device_name)
		self._call_device_script(instance, instance.script_pre, "apply", [device_name])
		self._added_device_apply_tuning(instance, device_name)
		self._call_device_script(instance, instance.script_post, "apply", [device_name])
		instance.processed_devices.add(device_name)

def _add_device(self, device_name):
		if device_name in (self._assigned_devices | self._free_devices):
			return

for instance_name, instance in list(self._instances.items()):
			if len(self._get_matching_devices(instance, [device_name])) == 1:
				self._add_device_process(instance, device_name)
				break
		else:
			log.debug("no instance wants %s" % device_name)
			self._free_devices.add(device_name)

def _add_devices_nocheck(self, instance, device_names):
		"""
		Add devices specified by the set to the instance, no check is performed.
		"""
		for dev in device_names:
			self._add_device_process(instance, dev)
		# This can be a bit racy (we can overcount),
		# but it shouldn't affect the boolean result
		instance.active = len(instance.processed_devices) \
				+ len(instance.assigned_devices) > 0

def _remove_device_process(self, instance, device_name):
		if device_name in instance.processed_devices:
			self._call_device_script(instance, instance.script_post, "unapply", [device_name])
			self._removed_device_unapply_tuning(instance, device_name)
			self._call_device_script(instance, instance.script_pre, "unapply", [device_name])
			instance.processed_devices.remove(device_name)
			# This can be a bit racy (we can overcount),
			# but it shouldn't affect the boolean result
			instance.active = len(instance.processed_devices) \
					+ len(instance.assigned_devices) > 0
			self._assigned_devices.remove(device_name)
			return True
		return False

def _remove_device(self, device_name):
		"""Remove device from the instance

Parameters:
		device_name -- name of the device

"""
		if device_name not in (self._assigned_devices | self._free_devices):
			return

for instance in list(self._instances.values()):
			if self._remove_device_process(instance, device_name):
				break
		else:
			self._free_devices.remove(device_name)

def _remove_devices_nocheck(self, instance, device_names):
		"""
		Remove devices specified by the set from the instance, no check is performed.
		"""
		for dev in device_names:
			self._remove_device_process(instance, dev)

def _added_device_apply_tuning(self, instance, device_name):
		self._execute_all_device_commands(instance, [device_name])
		if instance.has_dynamic_tuning and self._global_cfg.get(consts.CFG_DYNAMIC_TUNING, consts.CFG_DEF_DYNAMIC_TUNING):
			self._instance_apply_dynamic(instance, device_name)

def _removed_device_unapply_tuning(self, instance, device_name):
		if instance.has_dynamic_tuning and self._global_cfg.get(consts.CFG_DYNAMIC_TUNING, consts.CFG_DEF_DYNAMIC_TUNING):
			self._instance_unapply_dynamic(instance, device_name)
		self._cleanup_all_device_commands(instance, [device_name], remove = True)

Current path /usr/lib/python3.6/site-packages/tuned/plugins

Contents 2 folders, 29 files

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✏️ hotplug.py