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

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Message-ID: <20071107203922.GB16046@frankl.hpl.hp.com>
Date:	Wed, 7 Nov 2007 12:39:22 -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
Subject: Re: [PATCH] fix up perfmon to build on -mm

Greg,

On Wed, Nov 07, 2007 at 11:53:20AM -0800, Greg KH wrote:
> > > 
> > > Do you want me to send you patches based on this tree to help clean up
> > > the sysfs usage now that it's documented?
> > > 
> > Yes, send me the patches. But from what you were saying earlier it seems
> > I would need an extra sysfs patches to make this compile. Is that particular
> > patch already in Linus's tree?
> 
> No, it's in my tree, and will be in the next -mm.  You will need a few
> patches to get this to work, not just a single patch.
> 
Could you send them to me? if they are not too intrusive I could add them
to my tree. Yet I don't want something to distant from Linus's tree which
I pull from. My goal is to ensure that my tree still compiles and works.

> > > 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.
> 
Ok, I'll look at that next.

Thanks,

-- 

-Stephane
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