Date: Fri, 8 Feb 2008 13:10:12 +0100
From: Andi Kleen <andi@firstfloor.org>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Andi Kleen <andi@firstfloor.org>, Vegard Nossum <vegard.nossum@gmail.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Ingo Molnar <mingo@elte.hu>, Richard Knutsson <ricknu-0@student.ltu.se>,
       Christoph Lameter <clameter@sgi.com>
Subject: Re: [PATCH 1/2] kmemcheck v3
Message-ID: <20080208121012.GF4745@one.firstfloor.org>
References: <47AB79D4.2070605@gmail.com> <20080208115542.GD4745@one.firstfloor.org> <84144f020802080331j5bc01bc6naf1fe0192aadf70b@mail.gmail.com>
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On Fri, Feb 08, 2008 at 01:31:44PM +0200, Pekka Enberg wrote:
> Hi Andi,
> 
> On Feb 8, 2008 1:55 PM, Andi Kleen <andi@firstfloor.org> wrote:
> > Impressive patch! On the other hand a lot of the interesting
> > data isn't it kmalloc anymore, but in slab. Does it really track
> > all that much?
> 
> It tracks all slab caches. What we're not tracking is pages from the

I see.

> page allocator that are directly used by callers. We had some
> discussion of this already and we definitely want to extend it to
> cover that too later on.

It's probably tricky; there are all kinds of hidden page faults
on x86 on data structures allocated as pages (e.g. GDT, LDT [which
is sometimes kmalloc too], stack etc.) 

-Andi
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