linux-kernel - Re: [PATCH v1 04/16] thermal: gov_bang_bang: Fold thermal_zone_trip

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Message-ID: <cd49b117-a1b2-4cd8-b58d-12baee8abac2@arm.com>
Date: Fri, 19 Apr 2024 10:42:50 +0100
From: Lukasz Luba <lukasz.luba@....com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: LKML <linux-kernel@...r.kernel.org>, Linux PM <linux-pm@...r.kernel.org>,
 Daniel Lezcano <daniel.lezcano@...aro.org>,
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Subject: Re: [PATCH v1 04/16] thermal: gov_bang_bang: Fold
 thermal_zone_trip_update() into its caller



On 4/10/24 17:06, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Fold thermal_zone_trip_update() into bang_bang_control() which is the
> only caller of it to reduce code size and make it easier to follow.
> 
> No functional impact.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>   drivers/thermal/gov_bang_bang.c |   75 +++++++++++++++++-----------------------
>   1 file changed, 33 insertions(+), 42 deletions(-)
> 
> Index: linux-pm/drivers/thermal/gov_bang_bang.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/gov_bang_bang.c
> +++ linux-pm/drivers/thermal/gov_bang_bang.c
> @@ -13,47 +13,6 @@
>   
>   #include "thermal_core.h"
>   
> -static void thermal_zone_trip_update(struct thermal_zone_device *tz,
> -				     const struct thermal_trip *trip,
> -				     bool crossed_up)
> -{
> -	struct thermal_instance *instance;
> -
> -	dev_dbg(&tz->device, "Trip%d[temp=%d]:temp=%d:hyst=%d\n",
> -		thermal_zone_trip_id(tz, trip), trip->temperature,
> -		tz->temperature, trip->hysteresis);
> -
> -	list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
> -		if (instance->trip != trip)
> -			continue;
> -
> -		if (instance->target == THERMAL_NO_TARGET)
> -			instance->target = 0;
> -
> -		if (instance->target != 0 && instance->target != 1) {
> -			pr_debug("Unexpected state %ld of thermal instance %s in bang-bang\n",
> -				 instance->target, instance->name);
> -
> -			instance->target = 1;
> -		}
> -
> -		/*
> -		 * Enable the fan when the trip is crossed on the way up and
> -		 * disable it when the trip is crossed on the way down.
> -		 */
> -		if (instance->target == 0 && crossed_up)
> -			instance->target = 1;
> -		else if (instance->target == 1 && !crossed_up)
> -			instance->target = 0;
> -
> -		dev_dbg(&instance->cdev->device, "target=%ld\n", instance->target);
> -
> -		mutex_lock(&instance->cdev->lock);
> -		instance->cdev->updated = false; /* cdev needs update */
> -		mutex_unlock(&instance->cdev->lock);
> -	}
> -}
> -
>   /**
>    * bang_bang_control - controls devices associated with the given zone
>    * @tz: thermal_zone_device
> @@ -90,7 +49,39 @@ static void bang_bang_control(struct the
>   
>   	lockdep_assert_held(&tz->lock);
>   
> -	thermal_zone_trip_update(tz, trip, crossed_up);
> +	dev_dbg(&tz->device, "Trip%d[temp=%d]:temp=%d:hyst=%d\n",
> +		thermal_zone_trip_id(tz, trip), trip->temperature,
> +		tz->temperature, trip->hysteresis);
> +
> +	list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
> +		if (instance->trip != trip)
> +			continue;
> +
> +		if (instance->target == THERMAL_NO_TARGET)
> +			instance->target = 0;
> +
> +		if (instance->target != 0 && instance->target != 1) {
> +			pr_debug("Unexpected state %ld of thermal instance %s in bang-bang\n",
> +				 instance->target, instance->name);
> +
> +			instance->target = 1;
> +		}
> +
> +		/*
> +		 * Enable the fan when the trip is crossed on the way up and
> +		 * disable it when the trip is crossed on the way down.
> +		 */
> +		if (instance->target == 0 && crossed_up)
> +			instance->target = 1;
> +		else if (instance->target == 1 && !crossed_up)
> +			instance->target = 0;
> +
> +		dev_dbg(&instance->cdev->device, "target=%ld\n", instance->target);
> +
> +		mutex_lock(&instance->cdev->lock);
> +		instance->cdev->updated = false; /* cdev needs update */
> +		mutex_unlock(&instance->cdev->lock);
> +	}
>   
>   	list_for_each_entry(instance, &tz->thermal_instances, tz_node)
>   		thermal_cdev_update(instance->cdev);
> 
> 
> 

LGTM

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