linux-kernel - Re: [patch 1/3] kmsg: Kernel message catalog macros.

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Date:	Thu, 07 Aug 2008 08:59:30 -0700
From:	Joe Perches <joe@...ches.com>
To:	schwidefsky@...ibm.com
Cc:	Greg KH <gregkh@...e.de>, Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	lf_kernel_messages@...ts.linux-foundation.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michael Holzheu <holzheu@...ibm.com>,
	Gerrit Huizenga <gh@...ibm.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Jan Kara <jack@...e.cz>, Pavel Machek <pavel@....cz>,
	Sam Ravnborg <sam@...nborg.org>,
	Jochen Voß <jochen.voss@...glemail.com>,
	Kunai Takashi <kunai@...ux-foundation.jp>,
	Tim Bird <tim.bird@...sony.com>
Subject: Re: [patch 1/3] kmsg: Kernel message catalog macros.

On Thu, 2008-08-07 at 10:31 +0200, Martin Schwidefsky wrote:
> On Wed, 2008-08-06 at 13:07 -0700, Greg KH wrote:
> > No, I mean use dev_printk() as the base for your logging macro.  Add
> > your message tag as the first field after the dev_printk() information.
> Hmm, you are proposing to introduce a second format for the kmsg
> messages to avoid the need for some more printk wrapper macros. To me it
> seems that this has two problems:
> 1) The message tag is for the user of the system. If it does not have a
> fixed position it gets confusing.

I think the message tag today is not useful for a user.

It seems a barely useful maintainer value.

Perhaps the message tag allows for run-time language
translation and maybe a bit better selective logging.

> 2) The message tag for a driver message usually already includes the
> driver name, the dev_printk will print it again. This is ugly and
> reduces the quality of the message.

Ugly is a beholder problem.

Either printk or dev_printk could reorder the output.


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