linux-kernel - Re: [RFC] CPUMASK: proposal for replacing cpumask

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Message-ID: <20080910225345.GL7714@one.firstfloor.org>
Date:	Thu, 11 Sep 2008 00:53:45 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Mike Travis <travis@....com>
Cc:	Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	davej@...emonkey.org.uk, David Miller <davem@...emloft.net>,
	Eric Dumazet <dada1@...mosbay.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Jack Steiner <steiner@....com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Jes Sorensen <jes@....com>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org,
	Christoph Lameter <cl@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>
Subject: Re: [RFC] CPUMASK: proposal for replacing cpumask_t

> Here's an initial proposal for abstracting cpumask_t to be either

At least for some cases I don't think you'll get around defining
a "nearby subset of CPUs that can be handled together" type. Handling 1K 
objects all the time in one piece is simply not a good idea.

-Andi
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