2a092a2739
Resolves: rhbz#1251240
This fixes commit f14ae65bd2.
Signed-off-by: Ondřej Lysoněk <olysonek@redhat.com>
73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
import base
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import tuned.consts as consts
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import tuned.logs
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log = tuned.logs.get()
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class Plugin(base.Plugin):
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"""
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Base class for plugins with device hotpluging support.
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"""
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def __init__(self, *args, **kwargs):
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super(Plugin, self).__init__(*args, **kwargs)
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self._hardware_events_init()
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def cleanup(self):
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super(Plugin, self).cleanup()
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self._hardware_events_cleanup()
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def _hardware_events_init(self):
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raise NotImplementedError()
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def _hardware_events_cleanup(self):
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raise NotImplementedError()
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def _hardware_events_callback(self, event, device):
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if event == "add":
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log.info("device '%s' added" % device.sys_name)
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self._add_device(device)
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elif event == "remove":
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log.info("device '%s' removed" % device.sys_name)
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self._remove_device(device)
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def _add_device(self, device):
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device_name = device.sys_name
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if device_name in (self._assigned_devices | self._free_devices):
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return
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for instance_name, instance in self._instances.items():
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if len(self._get_matching_devices(instance, [device_name])) == 1:
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log.info("instance %s: adding new device %s" % (instance_name, device_name))
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self._assigned_devices.add(device_name)
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instance.devices.add(device_name)
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self._added_device_apply_tuning(instance, device_name)
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break
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else:
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log.debug("no instance wants %s" % device_name)
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self._free_devices.add(device_name)
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def _remove_device(self, device):
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device_name = device.sys_name
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if device_name not in (self._assigned_devices | self._free_devices):
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return
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for instance in self._instances.values():
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if device_name in instance.devices:
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self._removed_device_unapply_tuning(instance, device_name)
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instance.devices.remove(device_name)
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instance.active = len(instance.devices) > 0
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self._assigned_devices.remove(device_name)
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break
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else:
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self._free_devices.remove(device_name)
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def _added_device_apply_tuning(self, instance, device_name):
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self._execute_all_device_commands(instance, [device_name])
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if instance.has_dynamic_tuning and self._global_cfg.get(consts.CFG_DYNAMIC_TUNING, consts.CFG_DEF_DYNAMIC_TUNING):
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self._instance_apply_dynamic(instance, device_name)
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def _removed_device_unapply_tuning(self, instance, device_name):
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if instance.has_dynamic_tuning and self._global_cfg.get(consts.CFG_DYNAMIC_TUNING, consts.CFG_DEF_DYNAMIC_TUNING):
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self._instance_unapply_dynamic(instance, device_name)
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self._cleanup_all_device_commands(instance, [device_name])
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