linux-kernel - Re: [PATCH v2 2/3] thermal/core: Use precomputed jiffies for the polling

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Message-ID: <a342581a-e85c-b489-c00a-491812c5f6dc@linaro.org>
Date:   Fri, 18 Dec 2020 10:06:19 -0500
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>, rui.zhang@...el.com
Cc:     amitk@...nel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, Lukasz Luba <lukasz.luba@....com>
Subject: Re: [PATCH v2 2/3] thermal/core: Use precomputed jiffies for the
 polling



On 12/16/20 5:03 PM, Daniel Lezcano wrote:
> The delays are also stored in jiffies based unit. Use them instead of
> the ms.
> 
> Cc: Thara Gopinath <thara.gopinath@...aro.org>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> Reviewed-by: Lukasz Luba <lukasz.luba@....com>
> ---
>   drivers/thermal/thermal_core.c | 15 +++++----------
>   1 file changed, 5 insertions(+), 10 deletions(-)

Reviewed-by: Thara Gopinath <thara.gopinath@...aro.org>

> 
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index 2c41d4a0923f..d96c515af3cb 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -289,16 +289,11 @@ static int __init thermal_register_governors(void)
>    * - Critical trip point will cause a system shutdown.
>    */
>   static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
> -					    int delay)
> +					    unsigned long delay)
>   {
> -	if (delay > 1000)
> +	if (delay)
>   		mod_delayed_work(system_freezable_power_efficient_wq,
> -				 &tz->poll_queue,
> -				 round_jiffies(msecs_to_jiffies(delay)));
> -	else if (delay)
> -		mod_delayed_work(system_freezable_power_efficient_wq,
> -				 &tz->poll_queue,
> -				 msecs_to_jiffies(delay));
> +				 &tz->poll_queue, delay);
>   	else
>   		cancel_delayed_work(&tz->poll_queue);
>   }
> @@ -317,9 +312,9 @@ static void monitor_thermal_zone(struct thermal_zone_device *tz)
>   	mutex_lock(&tz->lock);
>   
>   	if (!stop && tz->passive)
> -		thermal_zone_device_set_polling(tz, tz->passive_delay);
> +		thermal_zone_device_set_polling(tz, tz->passive_delay_jiffies);
>   	else if (!stop && tz->polling_delay)
> -		thermal_zone_device_set_polling(tz, tz->polling_delay);
> +		thermal_zone_device_set_polling(tz, tz->polling_delay_jiffies);
>   	else
>   		thermal_zone_device_set_polling(tz, 0);
>   
> 

-- 
Warm Regards
Thara