From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 24 Nov 2008 16:05:05 +0000 (+1030)
Subject: sched: convert struct root_domain to cpumask_var_t.
X-Git-Tag: v2.6.29-rc1~538^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6c4927b22a3514c6660f0e72c78716226bd3cc8;p=pandora-kernel.git

sched: convert struct root_domain to cpumask_var_t.

Impact: (future) size reduction for large NR_CPUS.

Dynamically allocating cpumasks (when CONFIG_CPUMASK_OFFSTACK) saves
space for small nr_cpu_ids but big CONFIG_NR_CPUS.  cpumask_var_t
is just a struct cpumask for !CONFIG_CPUMASK_OFFSTACK.

def_root_domain is static, and so its masks are initialized with
alloc_bootmem_cpumask_var.  After that, alloc_cpumask_var is used.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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