linux-kernel - Re: [patch 2/8] 2.6.22-rc3 perfmon2 : Debug messages added

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Message-ID: <20070621103047.GT24544@erda.amd.com>
Date:	Thu, 21 Jun 2007 12:30:47 +0200
From:	"Robert Richter" <robert.richter@....com>
To:	"Stephane Eranian" <eranian@....hp.com>
cc:	"David Rientjes" <rientjes@...gle.com>,
	"Andi Kleen" <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: [patch 2/8] 2.6.22-rc3 perfmon2 : Debug messages added

On 20.06.07 13:22:16, Stephane Eranian wrote:
> David,
> 
> On Wed, Jun 20, 2007 at 12:49:05PM -0700, David Rientjes wrote:
> > On Wed, 20 Jun 2007, Robert Richter wrote:
> > 
> > > Debug messages added for better debugging.
> > > 
> > 
> > And you added BUG_ON()'s.
> > 
> > > Signed-off-by: Robert Richter <robert.richter@....com>
> > > 
> > > Index: linux-2.6.22-rc3/perfmon/perfmon_file.c
> > > ===================================================================
> > > --- linux-2.6.22-rc3.orig/perfmon/perfmon_file.c
> > > +++ linux-2.6.22-rc3/perfmon/perfmon_file.c
> > > @@ -192,6 +192,8 @@ static int pfm_mmap(struct file *file, s
> > >  	unsigned long flags;
> > >  	int ret;
> > >  
> > > +	PFM_DBG("pfm_file_ops");
> > 
> > After commenting on your first set of patches, I've been using it a little 
> > more.  In my use, these debugging messages weren't very helpful because 
> > "pfm_file_ops" can indicate pfm_mmap, pfm_read, pfm_poll, etc.  Could 
> > these be changed to be more specific based on the function they're in?
> > 
> the PFM_DBG() macro adds the CPU, function name and line number to the
> printed string.

Right, I had this in mind.

-Robert

-- 
AMD Saxony, Dresden, Germany
Operating System Research Center
email: robert.richter@....com



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