Subject: Re: [patch 1/3] kmsg: Kernel message catalog macros.
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Reply-To: schwidefsky@de.ibm.com
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
       lf_kernel_messages@lists.linux-foundation.org,
       Andrew Morton <akpm@linux-foundation.org>,
       Michael Holzheu <holzheu@de.ibm.com>, Gerrit Huizenga <gh@us.ibm.com>,
       Greg Kroah-Hartman <gregkh@suse.de>,
       Randy Dunlap <randy.dunlap@oracle.com>, Jan Kara <jack@suse.cz>,
       Pavel Machek <pavel@ucw.cz>, Sam Ravnborg <sam@ravnborg.org>,
       Joe Perches <joe@perches.com>,
       Jochen =?ISO-8859-1?Q?Vo=DF?= <jochen.voss@googlemail.com>,
       Kunai Takashi <kunai@linux-foundation.jp>,
       Tim Bird <tim.bird@am.sony.com>
In-Reply-To: <200808131433.02966.rusty@rustcorp.com.au>
References: <20080730165656.118280544@de.ibm.com>
	 <20080730171156.824640459@de.ibm.com>
	 <200808131433.02966.rusty@rustcorp.com.au>
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Organization: IBM Corporation
Date: Thu, 14 Aug 2008 19:07:03 +0200
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On Wed, 2008-08-13 at 14:33 +1000, Rusty Russell wrote:
> On Thursday 31 July 2008 02:56:57 Martin Schwidefsky wrote:
> > From: Michael Holzheu <holzheu@de.ibm.com>
> > From: Martin Schwidefsky <schwidefsky@de.ibm.com>
> >
> > Introduce a new family of printk macros which prefixes each kmsg message
> > with a component name and allows to tag the printk with a message id.
> 
> Can you hash the format string to generate the id?  6 hex digits should be 
> enough, and your tool can check for clashes.  As it's bad form to have 
> identical strings for different semantics anyway, this seems to make sense.

First, how do you do that with the C preprocessor? Second the kmsg-doc
script will check that the message format strings match if a kmsg with a
specific id is used in multiple locations.

-- 
blue skies,
  Martin.

"Reality continues to ruin my life." - Calvin.


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