linux-kernel - Re: [PATCH 12/13] maps#2: Add /proc/pid/pagemap interface

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Message-ID: <20070407163600.GN4892@waste.org>
Date:	Sat, 7 Apr 2007 11:36:00 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/13] maps#2: Add /proc/pid/pagemap interface

On Fri, Apr 06, 2007 at 11:55:10PM -0700, Andrew Morton wrote:
> On Fri, 06 Apr 2007 17:03:13 -0500 Matt Mackall <mpm@...enic.com> wrote:
> 
> > Add /proc/pid/pagemap interface
> > 
> > This interface provides a mapping for each page in an address space to
> > its physical page frame number, allowing precise determination of what
> > pages are mapped and what pages are shared between processes.
> 
> Could we please have a simple read-proc-pid-pagemap.c placed under
> Documentation/ somewhere?  Also some sample output for the changelog
> so we can see what all this does.

Working on that. The userspace portion of my tools are very rough at
the moment. And in Python.
 
> Also for kpagemap, please.
> 
> Should /proc/pid/pagemap and kpagemap be versioned?

They've both got a variable-sized header, so we can add things there. 

-- 
Mathematics is the supreme nostalgia of our time.
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