name : function_cpulist_invert.py import os import tuned.logs from . import base from tuned.utils.commands import commands log = tuned.logs.get() class cpulist_invert(base.Function): """ Inverts list of CPUs (makes its complement). For the complement it gets number of online CPUs from the /sys/devices/system/cpu/online, e.g. system with 4 CPUs (0-3), the inversion of list "0,2,3" will be "1" """ def __init__(self): # arbitrary number of arguments super(cpulist_invert, self).__init__("cpulist_invert", 0) def execute(self, args): if not super(cpulist_invert, self).execute(args): return None return ",".join(str(v) for v in self._cmd.cpulist_invert(",,".join(args)))