docs: def reset(self, rg=None):
          '''
          Enable all offline cpus, and reset max and min frequencies files
  
          rg: range or list of threads to reset
          '''
          if type(rg) == int:
              rg= [rg]
          to_reset= rg if rg else self.__get_ranges("present")
          self.enable_cpu(to_reset)
          for cpu in to_reset:
              fpath = path.join("cpu%i"%cpu,"cpufreq","cpuinfo_max_freq")
              max_freq = self.__read_cpu_file(fpath)
              fpath = path.join("cpu%i"%cpu,"cpufreq","cpuinfo_min_freq")
              min_freq = self.__read_cpu_file(fpath)
  
              fpath = path.join("cpu%i"%cpu,"cpufreq","scaling_max_freq")
              self.__write_cpu_file(fpath, max_freq.encode())
              fpath = path.join("cpu%i"%cpu,"cpufreq","scaling_min_freq")
              self.__write_cpu_file(fpath, min_freq.encode())