linux-kernel - Re: [PATCH 1/5] thermal/core: Rearm the monitoring only one time

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Date:   Fri, 5 Aug 2022 18:29:09 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        "Zhang, Rui" <rui.zhang@...el.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Amit Kucheria <amitk@...nel.org>
Subject: Re: [PATCH 1/5] thermal/core: Rearm the monitoring only one time

On Fri, Aug 5, 2022 at 5:38 PM Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
>
> The current code calls monitor_thermal_zone() inside the
> handle_thermal_trip() function. But this one is called in a loop for
> each trip point which means the monitoring is rearmed several times
> for nothing (assuming there could be several passive and active trip
> points).
>
> Move the monitor_thermal_zone() function out of the
> handle_thermal_trip() function and after the thermal trip loop, so the
> timer will be disabled or rearmed one time.
>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>

Does this series depend on any other?

You've been sending quite a lot of material lately and it is not
always easy to tell what the dependencies between the different patch
series are.

> ---
>  drivers/thermal/thermal_core.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index b4c68410c158..4e1a83987b99 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -383,11 +383,6 @@ static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
>                 handle_critical_trips(tz, trip, trip_temp, type);
>         else
>                 handle_non_critical_trips(tz, trip);
> -       /*
> -        * Alright, we handled this trip successfully.
> -        * So, start monitoring again.
> -        */
> -       monitor_thermal_zone(tz);
>  }
>
>  static void update_temperature(struct thermal_zone_device *tz)
> @@ -503,6 +498,8 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
>
>         for (count = 0; count < tz->num_trips; count++)
>                 handle_thermal_trip(tz, count);
> +
> +       monitor_thermal_zone(tz);
>  }
>  EXPORT_SYMBOL_GPL(thermal_zone_device_update);
>
> --
> 2.25.1
>