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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-01-09 11:53:50 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-01-17 22:15:20 +0100 |
| commit | 3b7357663a47092576c2802dd1dc74d35c8c8721 (patch) | |
| tree | f91419c3fbb9589e945b2831e981e013f66c483a /Documentation/cpuidle | |
| parent | b26bf6ab716f27955e2a503ffca1691582127cbb (diff) | |
| download | linux-3b7357663a47092576c2802dd1dc74d35c8c8721.tar.gz linux-3b7357663a47092576c2802dd1dc74d35c8c8721.tar.bz2 linux-3b7357663a47092576c2802dd1dc74d35c8c8721.zip | |
Documentation: driver-api: PM: Add cpuidle document
Replace the remaining documents under Documentation/cpuidle/
with one more complete governor and driver API document for cpuidle
under Documentation/driver-api/pm/.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'Documentation/cpuidle')
| -rw-r--r-- | Documentation/cpuidle/driver.txt | 37 | ||||
| -rw-r--r-- | Documentation/cpuidle/governor.txt | 28 |
2 files changed, 0 insertions, 65 deletions
diff --git a/Documentation/cpuidle/driver.txt b/Documentation/cpuidle/driver.txt deleted file mode 100644 index 1b0d81d92583..000000000000 --- a/Documentation/cpuidle/driver.txt +++ /dev/null @@ -1,37 +0,0 @@ - - - Supporting multiple CPU idle levels in kernel - - cpuidle drivers - - - - -cpuidle driver hooks into the cpuidle infrastructure and handles the -architecture/platform dependent part of CPU idle states. Driver -provides the platform idle state detection capability and also -has mechanisms in place to support actual entry-exit into CPU idle states. - -cpuidle driver initializes the cpuidle_device structure for each CPU device -and registers with cpuidle using cpuidle_register_device. - -If all the idle states are the same, the wrapper function cpuidle_register -could be used instead. - -It can also support the dynamic changes (like battery <-> AC), by using -cpuidle_pause_and_lock, cpuidle_disable_device and cpuidle_enable_device, -cpuidle_resume_and_unlock. - -Interfaces: -extern int cpuidle_register(struct cpuidle_driver *drv, - const struct cpumask *const coupled_cpus); -extern int cpuidle_unregister(struct cpuidle_driver *drv); -extern int cpuidle_register_driver(struct cpuidle_driver *drv); -extern void cpuidle_unregister_driver(struct cpuidle_driver *drv); -extern int cpuidle_register_device(struct cpuidle_device *dev); -extern void cpuidle_unregister_device(struct cpuidle_device *dev); - -extern void cpuidle_pause_and_lock(void); -extern void cpuidle_resume_and_unlock(void); -extern int cpuidle_enable_device(struct cpuidle_device *dev); -extern void cpuidle_disable_device(struct cpuidle_device *dev); diff --git a/Documentation/cpuidle/governor.txt b/Documentation/cpuidle/governor.txt deleted file mode 100644 index d9020f5e847b..000000000000 --- a/Documentation/cpuidle/governor.txt +++ /dev/null @@ -1,28 +0,0 @@ - - - - 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 |