linux/Documentation/ABI/obsolete/sysfs-cpuidle
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   1What:           /sys/devices/system/cpu/cpuidle/current_governor_ro
   2Date:           April, 2020
   3Contact:        linux-pm@vger.kernel.org
   4Description:
   5        current_governor_ro shows current using cpuidle governor, but read only.
   6        with the update that cpuidle governor can be changed at runtime in default,
   7        both current_governor and current_governor_ro co-exist under
   8        /sys/devices/system/cpu/cpuidle/ file, it's duplicate so make
   9        current_governor_ro obsolete.
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