linux-kernel - Re: new procfs memory analysis feature

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Message-ID: <4579DD22.70609@goop.org>
Date:	Fri, 08 Dec 2006 13:46:10 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Paul Cameron Davies <pauld@....unsw.EDU.AU>
CC:	Andrew Morton <akpm@...l.org>,
	David Singleton <dsingleton@...sta.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Lee.Schermerhorn@...com
Subject: Re: new procfs memory analysis feature

Paul Cameron Davies wrote:
> The PTI gathers all the open coded iterators togethers into one place,
> which would be a good precursor to providing generic iterators for
> non performance critical iterations.
>
> We are completing the updating/enhancements to this PTI for the latest
> kernel, to be released just prior to LCA.  This PTI is benchmarking
> well. We also plan to release the experimental guarded page table
> (GPT) running under this PTI.

I looked at implementing linear pagetable mappings for x86 as a way of
getting rid of CONFIG_HIGHPTE, and to make pagetable manipulations
generally more efficient.  I gave up on it after a while because all the
existing pagetable accessors are not suitable for a linear pagetable,
and I didn't want to have to introduce a pile of new pagetable
interfaces.  Would the PTI interface be helpful for this?

Thanks,
    J
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