linux-kernel - Re: [PATCH v1 2/6] thermal: netlink: Pass pointers to thermal_notify_tz_trip

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Date: Wed, 3 Jan 2024 19:58:11 +0000
From: Lukasz Luba <lukasz.luba@....com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
 Linux PM <linux-pm@...r.kernel.org>,
 Daniel Lezcano <daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>,
 Linux ACPI <linux-acpi@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 2/6] thermal: netlink: Pass pointers to
 thermal_notify_tz_trip_change()



On 12/15/23 19:56, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> 
> Instead of requiring the caller of thermal_notify_tz_trip_change() to
> provide specific values needed to populate struct param in it, make it
> extract those values from objects passed to it by the caller via const
> pointers.
> 
> No intentional functional impact.
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
> ---
>   drivers/thermal/thermal_netlink.c |   12 +++++++-----
>   drivers/thermal/thermal_netlink.h |    8 ++++----
>   drivers/thermal/thermal_trip.c    |    8 ++------
>   3 files changed, 13 insertions(+), 15 deletions(-)
> 
> Index: linux-pm/drivers/thermal/thermal_netlink.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_netlink.c
> +++ linux-pm/drivers/thermal/thermal_netlink.c
> @@ -361,12 +361,14 @@ int thermal_notify_tz_trip_delete(int tz
>   	return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_DELETE, &p);
>   }
>   
> -int thermal_notify_tz_trip_change(int tz_id, int trip_id, int trip_type,
> -				  int trip_temp, int trip_hyst)
> +int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,
> +				  const struct thermal_trip *trip)
>   {
> -	struct param p = { .tz_id = tz_id, .trip_id = trip_id,
> -			   .trip_type = trip_type, .trip_temp = trip_temp,
> -			   .trip_hyst = trip_hyst };
> +	struct param p = { .tz_id = tz->id,
> +			   .trip_id = thermal_zone_trip_id(tz, trip),
> +			   .trip_type = trip->type,
> +			   .trip_temp = trip->temperature,
> +			   .trip_hyst = trip->hysteresis };
>   
>   	return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_CHANGE, &p);
>   }
> Index: linux-pm/drivers/thermal/thermal_netlink.h
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_netlink.h
> +++ linux-pm/drivers/thermal/thermal_netlink.h
> @@ -23,8 +23,8 @@ int thermal_notify_tz_trip_up(int tz_id,
>   int thermal_notify_tz_trip_delete(int tz_id, int id);
>   int thermal_notify_tz_trip_add(int tz_id, int id, int type,
>   			       int temp, int hyst);
> -int thermal_notify_tz_trip_change(int tz_id, int id, int type,
> -				  int temp, int hyst);
> +int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,
> +				  const struct thermal_trip *trip);
>   int thermal_notify_cdev_state_update(int cdev_id, int state);
>   int thermal_notify_cdev_add(int cdev_id, const char *name, int max_state);
>   int thermal_notify_cdev_delete(int cdev_id);
> @@ -79,8 +79,8 @@ static inline int thermal_notify_tz_trip
>   	return 0;
>   }
>   
> -static inline int thermal_notify_tz_trip_change(int tz_id, int id, int type,
> -						int temp, int hyst)
> +static inline int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,

I was wondering if it's not too long line, but I can see it's common
in that header file. Shouldn't we break such lines like:

static inline
int thermal_notify_tz_trip_change(const struct thermal_zone_device *tz,
				const struct thermal_trip *trip)

?
Although, it would apply to all other long lines in that header, so not
particularly to this $subject.

> +						const struct thermal_trip *trip)
>   {
>   	return 0;
>   }
> Index: linux-pm/drivers/thermal/thermal_trip.c
> ===================================================================
> --- linux-pm.orig/drivers/thermal/thermal_trip.c
> +++ linux-pm/drivers/thermal/thermal_trip.c
> @@ -155,9 +155,7 @@ int thermal_zone_trip_id(const struct th
>   void thermal_zone_trip_updated(struct thermal_zone_device *tz,
>   			       const struct thermal_trip *trip)
>   {
> -	thermal_notify_tz_trip_change(tz->id, thermal_zone_trip_id(tz, trip),
> -				      trip->type, trip->temperature,
> -				      trip->hysteresis);
> +	thermal_notify_tz_trip_change(tz, trip);
>   	__thermal_zone_device_update(tz, THERMAL_TRIP_CHANGED);
>   }
>   
> @@ -168,8 +166,6 @@ void thermal_zone_set_trip_temp(struct t
>   		return;
>   
>   	trip->temperature = temp;
> -	thermal_notify_tz_trip_change(tz->id, thermal_zone_trip_id(tz, trip),
> -				      trip->type, trip->temperature,
> -				      trip->hysteresis);
> +	thermal_notify_tz_trip_change(tz, trip);
>   }
>   EXPORT_SYMBOL_GPL(thermal_zone_set_trip_temp);
> 
> 
> 

Other than the comment above, LGTM.

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