Hi Matthias,
On 2018년 07월 04일 08:46, Matthias Kaehlcke wrote:
> Currently update_devfreq() is only visible to devfreq governors outside
> of devfreq.c. Make it public to allow drivers that adjust devfreq policies
> to cause a re-evaluation of the frequency after a policy change.
>
> Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
> Acked-by: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>
> Reviewed-by: Brian Norris <briannorris@xxxxxxxxxxxx>
> --
> Changes in v5:
> - none
>
> Changed in v4:
> - added 'Reviewed-by: Brian Norris <briannorris@xxxxxxxxxxxx>' tag
>
> Changes in v3:
> - none
>
> Changes in v2:
> - added 'Acked-by: MyungJoo Ham <myungjoo.ham@xxxxxxxxxxx>' tag
> ---
> drivers/devfreq/governor.h | 3 ---
> include/linux/devfreq.h | 8 ++++++++
> 2 files changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h
> index b81700244ce3..f53339ca610f 100644
> --- a/drivers/devfreq/governor.h
> +++ b/drivers/devfreq/governor.h
> @@ -57,9 +57,6 @@ struct devfreq_governor {
> unsigned int event, void *data);
> };
>
> -/* Caution: devfreq->lock must be locked before calling update_devfreq */
> -extern int update_devfreq(struct devfreq *devfreq);
> -
> extern void devfreq_monitor_start(struct devfreq *devfreq);
> extern void devfreq_monitor_stop(struct devfreq *devfreq);
> extern void devfreq_monitor_suspend(struct devfreq *devfreq);
> diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
> index 7c8dce96db73..c4f84a769cb5 100644
> --- a/include/linux/devfreq.h
> +++ b/include/linux/devfreq.h
> @@ -222,6 +222,14 @@ extern void devm_devfreq_remove_device(struct device *dev,
> extern int devfreq_suspend_device(struct devfreq *devfreq);
> extern int devfreq_resume_device(struct devfreq *devfreq);
>
> +/**
> + * update_devfreq() - Reevaluate the device and configure frequency
> + * @devfreq: the devfreq device
> + *
> + * Note: devfreq->lock must be held
> + */
> +extern int update_devfreq(struct devfreq *devfreq);
> +
> /* Helper functions for devfreq user device driver with OPP. */
> extern struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
> unsigned long *freq, u32 flags);
>
Reviewed-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
--
Best Regards,
Chanwoo Choi
Samsung Electronics
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