linux-kernel - Re: [PATCH 6/7] dynamic debug v2

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Message-ID: <20080717212714.GA12617@isilmar.linta.de>
Date:	Thu, 17 Jul 2008 23:27:15 +0200
From:	Dominik Brodowski <linux@...inikbrodowski.net>
To:	Jason Baron <jbaron@...hat.com>, Greg KH <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	joe@...ches.com, nick@...k-andrew.net, randy.dunlap@...cle.com
Subject: Re: [PATCH 6/7] dynamic debug v2 - convert cpufreq

On Thu, Jul 17, 2008 at 02:15:31PM -0700, Greg KH wrote:
> On Thu, Jul 17, 2008 at 05:05:32PM -0400, Jason Baron wrote:
> > --- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
> > +++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
> > @@ -25,6 +25,7 @@
> >   * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >   */
> >  
> > +#include <linux/dynamic_debug_cpufreq.h>
> >  #include <linux/kernel.h>
> >  #include <linux/module.h>
> >  #include <linux/init.h>
> 
> kernel.h includes dynamic_debug.h right?  Then why not just put the
> _cpufreq.h stuff in the current cpufreq.h file(s)?

Seconded. Makes the cpufreq-related patch even smaller, for we won't have to
touch all drivers.

On Thu, Jul 17, 2008 at 05:05:32PM -0400, Jason Baron wrote:
> > > +#if defined(CONFIG_CPU_FREQ_DEBUG) || defined (CONFIG_DYNAMIC_PRINTK_DEBUG)
> > ...
> > > +#if defined(CONFIG_CPU_FREQ_DEBUG) || defined (CONFIG_DYNAMIC_PRINTK_DEBUG)
> > 
> > can't we just depend on thing on another?
> > 
> 
> We could make CONFIG_CPU_FREQ_DEBUG force CONFIG_DYNAMIC_PRINTK_DEBUG to be on.
> However, i'm trying to allow CONFIG_CPU_FREQ_DEBUG to be turned on without
> enabling CONFIG_DYNAMIC_PRINTK_DEBUG. That's consistent with how i'm trying to
> do this patch series. That is, individual subsystems can turn their respective
> debugging on without forcing on CONFIG_DYNAMIC_PRINTK_DEBUG.

Makes sense, and we can discuss depending one thing on another later on. 

Looking forward to seeing this infrastructure merged. I guess it will help a
lot.

Best,
	Dominik
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