linux-kernel - Re: [PATCHv2 2/2] PM / devfreq: Change to DEVFREQ_GOV_UPDATE

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Date:   Tue, 4 Feb 2020 16:51:39 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     chanwoo@...nel.org, myungjoo.ham@...sung.com,
        kyungmin.park@...sung.com, lukasz.luba@....com
Subject: Re: [PATCHv2 2/2] PM / devfreq: Change to
 DEVFREQ_GOV_UPDATE_INTERVAL event name

On 2/3/20 10:17 AM, Chanwoo Choi wrote:
> DEVFREQ_GOV_INTERVAL event indicates that update the interval
> for polling mode of devfreq device. But, this event name doesn't
> specify exactly what to do.
> 
> Change DEVFREQ_GOV_INTERVAL event name to DEVFREQ_GOV_UPDATE_INTERVAL
> which specifies what to do by event name.
> 
> And modify the function name to DEVFREQ_GOV_UPDATE_INTERVAL
> with 'devfreq_' prefix + verb + object as following:
> - devfreq_interval_update -> devfreq_updatee_interval
> 
> Reviewed-by: Lukasz Luba <lukasz.luba@....com>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> ---
> Changes from v1:
> - Add reviewed tag of Lukasz
> - Fix typo in patch description
> 
>  drivers/devfreq/devfreq.c                 | 10 +++++-----
>  drivers/devfreq/governor.h                |  4 ++--
>  drivers/devfreq/governor_simpleondemand.c |  4 ++--
>  drivers/devfreq/tegra30-devfreq.c         |  4 ++--
>  4 files changed, 11 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
> index cceee8bc3c2f..8494c5f05a73 100644
> --- a/drivers/devfreq/devfreq.c
> +++ b/drivers/devfreq/devfreq.c
> @@ -550,14 +550,14 @@ void devfreq_monitor_resume(struct devfreq *devfreq)
>  EXPORT_SYMBOL(devfreq_monitor_resume);
>  
>  /**
> - * devfreq_interval_update() - Update device devfreq monitoring interval
> + * devfreq_update_interval() - Update device devfreq monitoring interval
>   * @devfreq:    the devfreq instance.
>   * @delay:      new polling interval to be set.
>   *
>   * Helper function to set new load monitoring polling interval. Function
> - * to be called from governor in response to DEVFREQ_GOV_INTERVAL event.
> + * to be called from governor in response to DEVFREQ_GOV_UPDATE_INTERVAL event.
>   */
> -void devfreq_interval_update(struct devfreq *devfreq, unsigned int *delay)
> +void devfreq_update_interval(struct devfreq *devfreq, unsigned int *delay)
>  {
>  	unsigned int cur_delay = devfreq->profile->polling_ms;
>  	unsigned int new_delay = *delay;
> @@ -597,7 +597,7 @@ void devfreq_interval_update(struct devfreq *devfreq, unsigned int *delay)
>  out:
>  	mutex_unlock(&devfreq->lock);
>  }
> -EXPORT_SYMBOL(devfreq_interval_update);
> +EXPORT_SYMBOL(devfreq_update_interval);
>  
>  /**
>   * devfreq_notifier_call() - Notify that the device frequency requirements
> @@ -1426,7 +1426,7 @@ static ssize_t polling_interval_store(struct device *dev,
>  	if (ret != 1)
>  		return -EINVAL;
>  
> -	df->governor->event_handler(df, DEVFREQ_GOV_INTERVAL, &value);
> +	df->governor->event_handler(df, DEVFREQ_GOV_UPDATE_INTERVAL, &value);
>  	ret = count;
>  
>  	return ret;
> diff --git a/drivers/devfreq/governor.h b/drivers/devfreq/governor.h
> index 5ba3e051b1d0..c07ce77c253d 100644
> --- a/drivers/devfreq/governor.h
> +++ b/drivers/devfreq/governor.h
> @@ -18,7 +18,7 @@
>  /* Devfreq events */
>  #define DEVFREQ_GOV_START			0x1
>  #define DEVFREQ_GOV_STOP			0x2
> -#define DEVFREQ_GOV_INTERVAL			0x3
> +#define DEVFREQ_GOV_UPDATE_INTERVAL		0x3
>  #define DEVFREQ_GOV_SUSPEND			0x4
>  #define DEVFREQ_GOV_RESUME			0x5
>  
> @@ -61,7 +61,7 @@ void devfreq_monitor_start(struct devfreq *devfreq);
>  void devfreq_monitor_stop(struct devfreq *devfreq);
>  void devfreq_monitor_suspend(struct devfreq *devfreq);
>  void devfreq_monitor_resume(struct devfreq *devfreq);
> -void devfreq_interval_update(struct devfreq *devfreq, unsigned int *delay);
> +void devfreq_update_interval(struct devfreq *devfreq, unsigned int *delay);
>  
>  int devfreq_add_governor(struct devfreq_governor *governor);
>  int devfreq_remove_governor(struct devfreq_governor *governor);
> diff --git a/drivers/devfreq/governor_simpleondemand.c b/drivers/devfreq/governor_simpleondemand.c
> index 3d809f228619..1b314e1df028 100644
> --- a/drivers/devfreq/governor_simpleondemand.c
> +++ b/drivers/devfreq/governor_simpleondemand.c
> @@ -96,8 +96,8 @@ static int devfreq_simple_ondemand_handler(struct devfreq *devfreq,
>  		devfreq_monitor_stop(devfreq);
>  		break;
>  
> -	case DEVFREQ_GOV_INTERVAL:
> -		devfreq_interval_update(devfreq, (unsigned int *)data);
> +	case DEVFREQ_GOV_UPDATE_INTERVAL:
> +		devfreq_update_interval(devfreq, (unsigned int *)data);
>  		break;
>  
>  	case DEVFREQ_GOV_SUSPEND:
> diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
> index 0b65f89d74d5..28b2c7ca416e 100644
> --- a/drivers/devfreq/tegra30-devfreq.c
> +++ b/drivers/devfreq/tegra30-devfreq.c
> @@ -734,7 +734,7 @@ static int tegra_governor_event_handler(struct devfreq *devfreq,
>  		devfreq_monitor_stop(devfreq);
>  		break;
>  
> -	case DEVFREQ_GOV_INTERVAL:
> +	case DEVFREQ_GOV_UPDATE_INTERVAL:
>  		/*
>  		 * ACTMON hardware supports up to 256 milliseconds for the
>  		 * sampling period.
> @@ -745,7 +745,7 @@ static int tegra_governor_event_handler(struct devfreq *devfreq,
>  		}
>  
>  		tegra_actmon_pause(tegra);
> -		devfreq_interval_update(devfreq, new_delay);
> +		devfreq_update_interval(devfreq, new_delay);
>  		ret = tegra_actmon_resume(tegra);
>  		break;
>  
> 

Applied it. Thanks.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics