linux-kernel - Re: [patch 4/4] make pr_debug() dynamic

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Message-ID: <20080208155631.GC13650@redhat.com>
Date:	Fri, 8 Feb 2008 10:56:31 -0500
From:	Jason Baron <jbaron@...hat.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	mathieu.desnoyers@...ymtl.ca, akpm@...ux-foundation.org,
	mingo@...e.hu, fche@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [patch 4/4] make pr_debug() dynamic - update docs

On Thu, Feb 07, 2008 at 01:26:04PM -0800, Randy Dunlap wrote:
> > --- a/Documentation/kernel-parameters.txt
> > +++ b/Documentation/kernel-parameters.txt
> > @@ -1494,6 +1494,11 @@ and is between 256 and 4096 characters. It is defined in the file
> >  			autoconfiguration.
> >  			Ranges are in pairs (memory base and size).
> >  
> > +	pr_debug
> > +			Enables pr_debug() calls if the immediate
> > +			infrastructure has been enabled. These can also be
> > +			switched on/off via /proc/sys/debug/pr_debug.
> 
> Is this actually Enables/disables?
> I.e., is this actually pr_debug=<int> ?
> If so, please document that also.  If not, why not?
> 

The intention is that pr_debug is off by default. If you pass 'pr_debug' at the
command line, it is turned on early in the boot process. I orginally 
implemented it as pr_debug=<int>, but I believe just the string is simpler.

thanks,

-Jason


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