linux-kernel - Re: [PATCH v3 2/4] thermal/core: Avoid calling ->get_trip

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Date:   Mon, 18 Jul 2022 12:59:04 +0800
From:   Zhang Rui <rui.zhang@...el.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>, rafael@...nel.org
Cc:     quic_manafm@...cinc.com, amitk@...nel.org, lukasz.luba@....com,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/4] thermal/core: Avoid calling ->get_trip_temp()
 unnecessarily

On Fri, 2022-07-15 at 23:09 +0200, Daniel Lezcano wrote:
> As the trip temperature is already available when calling the
> function
> handle_critical_trips(), pass it as a parameter instead of having
> this
> function calling the ops again to retrieve the same data.
> 
> Reviewed-by: Lukasz Luba <lukasz.luba@....com>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> ---
>   v3:
>    - Massaged the patch title and the description
> ---
>  drivers/thermal/thermal_core.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/thermal/thermal_core.c
> b/drivers/thermal/thermal_core.c
> index d9f771b15ed8..f66036b3daae 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -340,12 +340,8 @@ void thermal_zone_device_critical(struct
> thermal_zone_device *tz)
>  EXPORT_SYMBOL(thermal_zone_device_critical);
>  
>  static void handle_critical_trips(struct thermal_zone_device *tz,
> -                                 int trip, enum thermal_trip_type
> trip_type)
> +                                 int trip, int trip_temp, enum
> thermal_trip_type trip_type)

This indent cleanup belongs to patch 1/4.
Other than that,

Reviewed-by: Zhang Rui <rui.zhang@...el.com>

>  {
> -       int trip_temp;
> -
> -       tz->ops->get_trip_temp(tz, trip, &trip_temp);
> -
>         /* If we have not crossed the trip_temp, we do not care. */
>         if (trip_temp <= 0 || tz->temperature < trip_temp)
>                 return;
> @@ -394,7 +390,7 @@ static void handle_thermal_trip(struct
> thermal_zone_device *tz, int trip)
>         handle_thermal_trip_crossed(tz, trip, trip_temp, hyst, type);
>  
>         if (type == THERMAL_TRIP_CRITICAL || type ==
> THERMAL_TRIP_HOT)
> -               handle_critical_trips(tz, trip, type);
> +               handle_critical_trips(tz, trip, trip_temp, type);
>         else
>                 handle_non_critical_trips(tz, trip);
>         /*