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Power management options (ACPI, ARM)  --->
  CPU Frequency scaling  --->
    [*] CPU Frequency scaling
    <*> CPU frequency translation statistics
        Default CPUFreq governor (performance) --->
    --- 'performance' governor
    <*> 'powersave' governor
    <*> 'userspace' governor for userspace frequency scaling
    <*> 'ondemand' cpufreq policy governor
    --- CPUFreq processor drivers
    <*> Intel Enhanced SpeedStep
    [*]   Use ACPI tables to decode valid frequency/voltage pairs
    [*]   Built-in tables for Banias CPUs
    <*> Intel Speedstep on ICH-M chipsets (ioports interface)