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| -rw-r--r-- | Documentation/cpuidle/governor.txt | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/cpuidle/governor.txt b/Documentation/cpuidle/governor.txt new file mode 100644 index 000000000..d9020f5e8 --- /dev/null +++ b/Documentation/cpuidle/governor.txt @@ -0,0 +1,28 @@ + + + + Supporting multiple CPU idle levels in kernel + + cpuidle governors + + + + +cpuidle governor is policy routine that decides what idle state to enter at +any given time. cpuidle core uses different callbacks to the governor. + +* enable() to enable governor for a particular device +* disable() to disable governor for a particular device +* select() to select an idle state to enter +* reflect() called after returning from the idle state, which can be used + by the governor for some record keeping. + +More than one governor can be registered at the same time and +users can switch between drivers using /sysfs interface (when enabled). +More than one governor part is supported for developers to easily experiment +with different governors. By default, most optimal governor based on your +kernel configuration and platform will be selected by cpuidle. + +Interfaces: +extern int cpuidle_register_governor(struct cpuidle_governor *gov); +struct cpuidle_governor |