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>
29 lines
1,022 B
Text
29 lines
1,022 B
Text
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Supporting multiple CPU idle levels in kernel
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cpuidle governors
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cpuidle governor is policy routine that decides what idle state to enter at
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any given time. cpuidle core uses different callbacks to the governor.
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* enable() to enable governor for a particular device
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* disable() to disable governor for a particular device
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* select() to select an idle state to enter
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* reflect() called after returning from the idle state, which can be used
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by the governor for some record keeping.
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More than one governor can be registered at the same time and
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users can switch between drivers using /sysfs interface (when enabled).
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More than one governor part is supported for developers to easily experiment
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with different governors. By default, most optimal governor based on your
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kernel configuration and platform will be selected by cpuidle.
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Interfaces:
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extern int cpuidle_register_governor(struct cpuidle_governor *gov);
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extern void cpuidle_unregister_governor(struct cpuidle_governor *gov);
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struct cpuidle_governor
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