fe8e288a63
Documentation for cpuidle infrastructure. (resend) Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Reviewed-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Len Brown <len.brown@intel.com>
23 lines
804 B
Text
23 lines
804 B
Text
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Supporting multiple CPU idle levels in kernel
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cpuidle
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General Information:
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Various CPUs today support multiple idle levels that are differentiated
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by varying exit latencies and power consumption during idle.
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cpuidle is a generic in-kernel infrastructure that separates
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idle policy (governor) from idle mechanism (driver) and provides a
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standardized infrastructure to support independent development of
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governors and drivers.
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cpuidle resides under drivers/cpuidle.
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Boot options:
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"cpuidle_sysfs_switch"
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enables current_governor interface in /sys/devices/system/cpu/cpuidle/,
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which can be used to switch governors at run time. This boot option
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is meant for developer testing only. In normal usage, kernel picks the
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best governor based on governor ratings.
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SEE ALSO: sysfs.txt in this directory.
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