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from . import base
from .decorators import *
import tuned.logs
from tuned.utils.commands import commands
import glob
import socket
import time
log = tuned.logs.get()
class RTENTSKPlugin(base.Plugin):
"""
A plug-in for avoiding inter-processor interrupts caused by enabling
or disabling static keys.
The plug-in has no options; when included, **TuneD** will keep an open
socket with timestamping enabled, thus keeping the static key enabled.
"""
def _instance_init(self, instance):
instance._has_static_tuning = True
instance._has_dynamic_tuning = False
# SO_TIMESTAMP nor SOF_TIMESTAMPING_OPT_TX_SWHW is defined by
# the socket class
SO_TIMESTAMP = 29 # see include/uapi/asm-generic/socket.h
#define SO_TIMESTAMP 0x4012 # parisc!
SOF_TIMESTAMPING_OPT_TX_SWHW = (1<<14) # see include/uapi/linux/net_tstamp.h
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
s.setsockopt(socket.SOL_SOCKET, SO_TIMESTAMP, SOF_TIMESTAMPING_OPT_TX_SWHW)
self.rtentsk_socket = s
log.info("opened SOF_TIMESTAMPING_OPT_TX_SWHW socket")
def _instance_cleanup(self, instance):
s = self.rtentsk_socket
s.close()