linux-kernel - [PATCH 0/2] x86: Reduce pressure on stack from cpumask usage -v2

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Message-Id: <20071121100201.156191000@sgi.com>
Date:	Wed, 21 Nov 2007 02:02:01 -0800
From:	travis@....com
To:	Andrew Morton <akpm@...ux-foundation.org>, Andi Kleen <ak@...e.de>,
	Christoph Lameter <clameter@....com>
Cc:	mingo@...e.hu, apw@...dowen.org, Jack Steiner <steiner@....com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] x86: Reduce pressure on stack from cpumask usage -v2


v2:
    - fix some compile errors when NR_CPUS > default for ia386 (128 & 4096)
    - remove unneccessary includes

Convert cpumask_of_cpu to use a static percpu data array and
set_cpus_allowed to pass the cpumask_t arg as a pointer.

Conditioned on NR_CPUS > BITS_PER_LONG.

Compiled and tested for i386 and x86_64.  I'd appreciate
feedback on other architectures.

(Note: there are still compile/test errors when NR_CPUS > 256
due to cpu id being 8 bits among other things.)

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