linux-kernel - Re: [PATCH v1 16/16] thermal: core: Relocate critical and hot trip handling

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Message-ID: <c8d48dab-a04e-4699-b361-a7a4cd35f863@arm.com>
Date: Fri, 19 Apr 2024 19:52:17 +0100
From: Lukasz Luba <lukasz.luba@....com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>,
 Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Daniel Lezcano <daniel.lezcano@...aro.org>,
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Subject: Re: [PATCH v1 16/16] thermal: core: Relocate critical and hot trip
 handling



On 4/10/24 18:44, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> Subject: [PATCH v1]
> 
> Modify handle_thermal_trip() to call handle_critical_trips() only after
> finding that the trip temperature has been crossed on the way up and
> remove the redundant temperature check from the latter.
> 
> No intentional functional impact.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>   drivers/thermal/thermal_core.c |   11 ++++-------
>   1 file changed, 4 insertions(+), 7 deletions(-)
> 
> Index: linux-pm/drivers/thermal/thermal_core.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_core.c
> +++ linux-pm/drivers/thermal/thermal_core.c
> @@ -350,10 +350,6 @@ void thermal_zone_device_critical_reboot
>   static void handle_critical_trips(struct thermal_zone_device *tz,
>   				  const struct thermal_trip *trip)
>   {
> -	/* If we have not crossed the trip_temp, we do not care. */
> -	if (trip->temperature <= 0 || tz->temperature < trip->temperature)
> -		return;
> -
>   	trace_thermal_zone_trip(tz, thermal_zone_trip_id(tz, trip), trip->type);
>   
>   	if (trip->type == THERMAL_TRIP_CRITICAL)
> @@ -405,10 +401,11 @@ static void handle_thermal_trip(struct t
>   		list_add_tail(&td->notify_list_node, way_up_list);
>   		td->notify_temp = trip->temperature;
>   		td->threshold -= trip->hysteresis;
> -	}
>   
> -	if (trip->type == THERMAL_TRIP_CRITICAL || trip->type == THERMAL_TRIP_HOT)
> -		handle_critical_trips(tz, trip);
> +		if (trip->type == THERMAL_TRIP_CRITICAL ||
> +		    trip->type == THERMAL_TRIP_HOT)
> +			handle_critical_trips(tz, trip);
> +	}
>   }
>   
>   static void update_temperature(struct thermal_zone_device *tz)
> 
> 
> 

Reviewed-by: Lukasz Luba <lukasz.luba@....com>