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

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Date:	Wed, 20 Oct 2010 11:02:42 -0700
From:	Joe Perches <joe@...ches.com>
To:	Guenter Roeck <guenter.roeck@...csson.com>
Cc:	Jean Delvare <khali@...ux-fr.org>,
	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" <lm-sensors@...sensors.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/hwmon: Use pr_fmt and pr_<level>

On Wed, 2010-10-20 at 10:48 -0700, Guenter Roeck wrote:
> The modified define in kernel.org would only apply if pr_fmt isn't already defined,
> so that argument is not really correct. The real difference would be that you could
> then remove the individual pr_fmt defines from 211 files, and all users of pr_fmt
> without module name (ie those hard to read) would be easier to read/identify.

I think that's not a good idea for now,
though I agree with the general concept.

This is in kernel.h now.

#ifndef pr_fmt
#define pr_fmt(fmt) fmt
#endif

A lot of the pr_<level> calls already include
some internal prefix.

Try:
$ grep -rP --include=*.[ch] -oh "\bpr_\w+\s*\(\s*\"\w+:" * | \
	cut -f2- -d"(" | sort | uniq -c | sort -rn

You're suggesting modifying 100+ files to get the
same output used now.

I think doing something like this after some more
generally accepted agreement is reached on how best
to do it would be better.

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