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Date: Mon, 7 Oct 2002 21:06:33 -0300
From: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>, Matt Porter <porter@cox.net>,
       "David S. Miller" <davem@redhat.com>, giduru@yahoo.com,
       Andre Hedrick <andre@linux-ide.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: The end of embedded Linux?
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Em Mon, Oct 07, 2002 at 08:47:33PM -0300, Arnaldo C. Melo escreveu:
> Em Tue, Oct 08, 2002 at 12:23:27AM +0100, Alan Cox escreveu:
> > On Tue, 2002-10-08 at 00:01, Arnaldo Carvalho de Melo wrote:
> > to tweak
> > > > the values exactly how we want in a specific application.  The tweaking
> > > > options can be buried under advanced kernel options with the appropriate
> > > > disclaimers about shooting yourself in the foot.
 
> > > That is how I think it should be done, yes.
 
> > Submitting dprintk() seems like a great starting point. I've also got
> > some patches in the archive someone sent that allows you to configure
> > out the #! exec stuff
 
> Ok, will do that in the next days.
 

Ok, so what do you think of a include/linux/debug.h

and a CONFIG_DEBUG_MESSAGES

and in debug.h:

#ifdef CONFIG_DEBUG_MESSAGES
#define dprintk printk(KERN_DEBUG.....) /* find the best of the 1001 variants
                                          already in the tree */
#else
#define dprintk(.....)
#endif

and in drivers currently using dprintk (and in others that want to start using
it instead of homebrew equivalent macros):

#include <linux/debug.h>

...happily use dprintk...

and the default kernel config would just disable (or other sane default agreed
here) so, assuming it is disabled it'd be easy to enable it on a per source
code file, doing this:

#include <other_includes>
#define CONFIG_DEBUG_MESSAGES
#include <linux/debug.h>

Would this be acceptable? Ah, all of the above is quickly hacked pseudocode 8)

- Arnaldo
-
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