linux-kernel - Re: [PATCH 1/3] hwmon: (coretemp) Introduce enum for attr index

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Date:   Thu, 30 Nov 2023 13:51:27 -0800
From:   Ashok Raj <ashok_raj@...ux.intel.com>
To:     Zhang Rui <rui.zhang@...el.com>
Cc:     linux@...ck-us.net, jdelvare@...e.com, fenghua.yu@...el.com,
        linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ashok Raj <ashok.raj@...el.com>
Subject: Re: [PATCH 1/3] hwmon: (coretemp) Introduce enum for attr index

On Mon, Nov 27, 2023 at 09:16:49PM +0800, Zhang Rui wrote:
> Introduce enum coretemp_attr_index to better describe the index of each
> sensor attribute and the maximum number of basic/possible attributes.
> 
> No functional change.
> 
> Signed-off-by: Zhang Rui <rui.zhang@...el.com>
> ---
>  drivers/hwmon/coretemp.c | 12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
> index ba82d1e79c13..6053ed3761c2 100644
> --- a/drivers/hwmon/coretemp.c
> +++ b/drivers/hwmon/coretemp.c
> @@ -43,10 +43,18 @@ MODULE_PARM_DESC(tjmax, "TjMax value in degrees Celsius");
>  #define BASE_SYSFS_ATTR_NO	2	/* Sysfs Base attr no for coretemp */
>  #define NUM_REAL_CORES		128	/* Number of Real cores per cpu */
>  #define CORETEMP_NAME_LENGTH	28	/* String Length of attrs */
> -#define MAX_CORE_ATTRS		4	/* Maximum no of basic attrs */
> -#define TOTAL_ATTRS		(MAX_CORE_ATTRS + 1)
>  #define MAX_CORE_DATA		(NUM_REAL_CORES + BASE_SYSFS_ATTR_NO)
>  
> +enum coretemp_attr_index {
> +	ATTR_LABEL,
> +	ATTR_CRIT_ALARM,
> +	ATTR_TEMP,
> +	ATTR_TJMAX,
> +	ATTR_TTARGET,
> +	TOTAL_ATTRS,			/* Maximum no of possible attrs */
> +	MAX_CORE_ATTRS = ATTR_TJMAX + 1	/* Maximum no of basic attrs */

This seems odd. TOTAL_ATTRS being the last entry seems fine, but defining a
MAX_CORE_ATTR the way above sounds a bit hacky.

> +};
> +
>  #ifdef CONFIG_SMP
>  #define for_each_sibling(i, cpu) \
>  	for_each_cpu(i, topology_sibling_cpumask(cpu))
> -- 
> 2.34.1
>