linux-kernel - Re: [PATCH 1/2] scalable rw

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Message-ID: <20070512192130.GA8833@one.firstfloor.org>
Date:	Sat, 12 May 2007 21:21:30 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <clameter@....com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: [PATCH 1/2] scalable rw_mutex

> This also allows us to de-uglify workqueue.c a little bit, it uses
> a home-grown cpu_populated_map.

It might be obsolete iff more and more architecture don't use NR_CPUS filled
possible_map anymore (haven't checked them all to know if it's true or not)

If not there are a couple of more optimizations that can be done, e.g.
in networking by converting more code to hotplug notifier.

-Andi
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