linux-kernel - Re: [RFC/PATCH] Documentation of kernel messages

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Message-Id: <1181821661.10064.27.camel@localhost.localdomain>
Date:	Thu, 14 Jun 2007 13:47:41 +0200
From:	holzheu <holzheu@...ux.vnet.ibm.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, randy.dunlap@...cle.com,
	gregkh@...e.de, mtk-manpages@....net, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com,
	"lf_kernel_messages@...ux-foundation.org" 
	<lf_kernel_messages@...ux-foundation.org>
Subject: Re: [RFC/PATCH] Documentation of kernel messages

On Thu, 2007-06-14 at 12:38 +0200, holzheu wrote:
> On Thu, 2007-06-14 at 11:41 +0200, Jan Kara wrote:
> >   <snip>
> > 
> > > Your proposal is similar to one I made to some Japanese developers
> > > earlier this year.  I was more modest, proposing that we
> > > 
> > > - add an enhanced printk
> > > 
> > > 	xxprintk(msgid, KERN_ERR "some text %d\n", some_number);
> >   Maybe a stupid idea but why do we want to assign these numbers by hand?
> > I can imagine it could introduce collisions when merging tons of patches
> > with new messages... Wouldn't it be better to compute say, 8-byte hash
> > from the message and use it as it's identifier? We could do this
> > automagically at compile time.
> 
> Of course automatically generated message numbers would be great and
> something like:
> 
> hub.4a5bcd77: Detected some problem.

Sorry, I first read: 8 characters not 8 bytes.

Indeed, "hub.d41d8cd98f00b204: Detected some problem." ... does not look
like very beautiful.

But maybe also 4 bytes would be enough, since the hash only has to be
unique within one component e.g. "hub".

Michael

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