linux-kernel - Re: [QUICKLIST 1/4] Quicklists for page table pages V5

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Message-ID: <20070410002605.GY2986@holomorphy.com>
Date:	Mon, 9 Apr 2007 17:26:05 -0700
From:	William Lee Irwin III <wli@...omorphy.com>
To:	Christoph Lameter <clameter@....com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, ak@...e.de
Subject: Re: [QUICKLIST 1/4] Quicklists for page table pages V5

On Mon, 9 Apr 2007, Andrew Morton wrote:
>> So... we skipped i386 this time?
>> I'd have gone squeamish if it was included, due to the mystery crash when
>> we (effectively) set the list size to zero.  Someone(tm) should look into 
>> that - who knows, it might indicate a problem in generic code.

On Mon, Apr 09, 2007 at 03:03:19PM -0700, Christoph Lameter wrote:
> Yeah too many scary monsters in the i386 arch code. Maybe Bill Irwin can 
> take a look at how to make this work? He liked the benchmarking code that 
> I posted so he may have the tools to insure that it works right. Maybe he 
> can figure out some additional tricks on how to make quicklists work 
> better?

There shouldn't be anything all that interesting in the i386 code apart
from accommodations made for slab.c and pageattr.c. But yes, I can do
the grunt work there since I'm familiar enough with its history.

I used the i386 pagetable caching backout code to help verify that
nothing unusual was going on with generic code in this area. I can
debug the altered quicklist code in like fashion to what that was.

Basically, I'll help all this along.


-- wli
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