linux-kernel - Re: [PATCH 2/6] compcache: block device

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Date:	Tue, 25 Mar 2008 02:09:27 +0530
From:	Nitin Gupta <nitingupta910@...il.com>
To:	"Will Newton" <will.newton@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 2/6] compcache: block device - internal defs

On Tuesday 25 March 2008 02:06:02 am Will Newton wrote:
> On Mon, Mar 24, 2008 at 5:50 PM, Nitin Gupta <nitingupta910@...il.com> wrote:
> >  >  >  +
> >  >  >  +/* Create /proc/compcache? */
> >  >  >  +/* If STATS is disabled, this will give minimal compcache info */
> >  >  >  +#define CONFIG_COMPCACHE_PROC
> >  >  >  +
> >  >  >  +#if DEBUG
> >  >  >  +#define CC_DEBUG(fmt,arg...) \
> >  >  >  +       printk(KERN_DEBUG C fmt,##arg)
> >  >  >  +#else
> >  >  >  +#define CC_DEBUG(fmt,arg...) NOP
> >  >  >  +#endif
> >  >
> >  >  Have you thought about using pr_debug() for this? It looks like it
> >  >  would simplify this file at the cost of a little flexibility.
> >  >
> >
> >  I want to enable/disable this debugging based on DEBUG_COMPCACHE flag.
> >  Thats why I added these macros. I will do 'printk(KERN_DEBUG' ->
> >  pr_debug
> 
> The definition of pr_debug (kernel.h) is already surrounded by #ifdef
> DEBUG so it may give you the same behaviour as the CC_DEBUG macro.
> 

Yes, I missed this point. But still, I want to have two levels of debugging. I can probably use pr_debug() for "normal" debug and CC_DEBUG for "verbose" debugging. This looks bit inconsistent, so maybe I should stick which CC_DEBUG/CC_DEBUG2 pair instead?

- Nitin
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