linux-kernel - Re: [PATCH] fix up perfmon to build on -mm

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Message-ID: <20071108152723.GC16752@frankl.hpl.hp.com>
Date:	Thu, 8 Nov 2007 07:27:23 -0800
From:	Stephane Eranian <eranian@....hp.com>
To:	Greg KH <greg@...ah.com>
Cc:	Andrew Morton <akpm@...l.org>, perfmon@...ali.hpl.hp.com,
	linux-kernel@...r.kernel.org, perfmon2-devel@...ts.sourceforge.net
Subject: Re: [PATCH] fix up perfmon to build on -mm

Greg,

On Wed, Nov 07, 2007 at 11:53:20AM -0800, Greg KH wrote:
> > > Also, a lot of your per-cpu sysfs files should probably move to debugfs
> > > as they are for debugging only, right?  No need to clutter up sysfs with
> > > them when only the very few perfmon developers would be needing access
> > > to them.
> > > 
> > Yes, this is mostly debugging. If debugfs is meant for this, then I'll
> > be happy to move this stuff over there. Is there some good example of how
> > I could do that based on my current sysfs code?
> 
> There is documentation for debugfs in the kernel api document :)
> 
> And, there are many in-kernel users of debugfs, a grep for
> "debugfs_create_" should show you some examples of how to use this.  If
> you have any questions, please let me know.

I have now removed all the perfmon2 statistics from sysfs and moved them
to debugfs. I must admit, I like it better this way. Debugfs is also so
much easier to program.

Patch has been pushed into my tree. Let me know if you think I can improve
the sysfs code some more.

Thanks.

-- 

-Stephane
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