linux-kernel - Re: [PATCH] drivers/hwmon: Use pr_fmt and pr

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Date:	Wed, 20 Oct 2010 09:42:08 +0200
From:	Jean Delvare <khali@...ux-fr.org>
To:	Joe Perches <joe@...ches.com>
Cc:	Guenter Roeck <guenter.roeck@...csson.com>,
	Hans de Goede <j.w.r.degoede@....nl>,
	Alistair John Strachan <alistair@...zero.co.uk>,
	Henrik Rydberg <rydberg@...omail.se>,
	"Mark M. Hoffman" <mhoffman@...htlink.com>,
	Luca Tettamanti <kronos.it@...il.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Juerg Haefliger <juergh@...il.com>,
	Eric Piel <eric.piel@...mplin-utc.net>,
	Jim Cromie <jim.cromie@...il.com>,
	Roger Lucas <vt8231@...denengine.co.uk>,
	lm-sensors@...sensors.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/hwmon: Use pr_fmt and pr_<level>

Hi Joe,

On Tue, 19 Oct 2010 16:13:40 -0700, Joe Perches wrote:
> Convert printks to pr_<level>
> Coalesce long formats
> Removed prefixes from formats
> Added #define pr_fmt KBUILD_MODNAME ": " fmt
> Standardized abitguru messages for reporting and finding MAINTAINER
> (...)
> diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
> index 03694cc..8f07a9d 100644
> --- a/drivers/hwmon/abituguru.c
> +++ b/drivers/hwmon/abituguru.c
> @@ -20,6 +20,9 @@
>      the custom Abit uGuru chip found on Abit uGuru motherboards. Note: because
>      of lack of specs the CPU/RAM voltage & frequency control is not supported!
>  */
> +
> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> +
>  #include <linux/module.h>

It looks odd that every driver would have to set this. Shouldn't this
be the default set in <linux/kernel.h>? Something like:

#ifndef pr_fmt
#ifdef KBUILD_MODNAME
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#else
#define pr_fmt(fmt) fmt
#endif /* KBUILD_MODNAME */
#endif

Overall I like this cleanup patch, but the addition of #define pr_fmt
to every driver looks plain wrong.

I'll review the rest of the patch(es) once this point is sorted out.

-- 
Jean Delvare
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