linux-kernel - Re: [PATCH 1/1] Bumps limit of maximum core ID from 32 to 128.

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Message-ID: <20151013203134.GA28106@roeck-us.net>
Date:	Tue, 13 Oct 2015 13:31:34 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Lukasz Odzioba <lukasz.odzioba@...el.com>
Cc:	fenghua.yu@...el.com, jdelvare@...e.de, lm-sensors@...sensors.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] Bumps limit of maximum core ID from 32 to 128.

On Mon, Oct 12, 2015 at 01:53:32PM +0200, Lukasz Odzioba wrote:
> A new limit selected arbitrarily as power of two greater than
> required minimum for Xeon Phi processor.
> 
> Currently driver is not able to handle cores with core ID greater than 32.
> Such attempt ends up with the following error in dmesg:
> coretemp coretemp.0: Adding Core XXX failed
> 

Why 128 instead of a more reasonable 64 ? What is the required minimum
for Xeon Phi ?

Also, please consider using the subject line commonly used in hwmon,
or at least point to the driver you are changing.

Thanks,
Guenter

> Signed-off-by: Lukasz Odzioba <lukasz.odzioba@...el.com>
> ---
>  drivers/hwmon/coretemp.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
> index 3e03379..6a27eb2 100644
> --- a/drivers/hwmon/coretemp.c
> +++ b/drivers/hwmon/coretemp.c
> @@ -52,7 +52,7 @@ module_param_named(tjmax, force_tjmax, int, 0444);
>  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		32	/* Number of Real cores per cpu */
> +#define NUM_REAL_CORES		128	/* Number of Real cores per cpu */
>  #define CORETEMP_NAME_LENGTH	19	/* String Length of attrs */
>  #define MAX_CORE_ATTRS		4	/* Maximum no of basic attrs */
>  #define TOTAL_ATTRS		(MAX_CORE_ATTRS + 1)
> -- 
> 1.7.1
> 
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