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32 lines
1.1 KiB
Text
32 lines
1.1 KiB
Text
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Supporting multiple CPU idle levels in kernel
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cpuidle drivers
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cpuidle driver hooks into the cpuidle infrastructure and handles the
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architecture/platform dependent part of CPU idle states. Driver
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provides the platform idle state detection capability and also
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has mechanisms in place to support actual entry-exit into CPU idle states.
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cpuidle driver initializes the cpuidle_device structure for each CPU device
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and registers with cpuidle using cpuidle_register_device.
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It can also support the dynamic changes (like battery <-> AC), by using
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cpuidle_pause_and_lock, cpuidle_disable_device and cpuidle_enable_device,
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cpuidle_resume_and_unlock.
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Interfaces:
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extern int cpuidle_register_driver(struct cpuidle_driver *drv);
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extern void cpuidle_unregister_driver(struct cpuidle_driver *drv);
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extern int cpuidle_register_device(struct cpuidle_device *dev);
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extern void cpuidle_unregister_device(struct cpuidle_device *dev);
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extern void cpuidle_pause_and_lock(void);
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extern void cpuidle_resume_and_unlock(void);
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extern int cpuidle_enable_device(struct cpuidle_device *dev);
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extern void cpuidle_disable_device(struct cpuidle_device *dev);
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