From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 31 Dec 2008 23:42:28 +0000 (+1030)
Subject: cpumask: convert kernel/cpu.c
X-Git-Tag: v2.6.29-rc1~521^2~11^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0b582ec56f1a1d8b30ebf340a7b91fb09f26c8c;p=pandora-kernel.git

cpumask: convert kernel/cpu.c

Impact: Reduce kernel stack and memory usage, use new cpumask API.

Use cpumask_var_t for take_cpu_down() stack var, and frozen_cpus.

Note that notify_cpu_starting() can be called before core_initcall
allocates frozen_cpus, but the NULL check is optimized out by gcc for
the CONFIG_CPUMASK_OFFSTACK=n case.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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