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x86: change _node_to_cpumask_ptr to return const ptr

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* Strengthen the return type for the _node_to_cpumask_ptr to be
    a const pointer.  This adds compiler checking to insure that
    node_to_cpumask_map[] is not changed inadvertently.

Signed-off-by: Mike Travis <travis@sgi.com>
Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Acked-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis
2008-07-08 14:35:21 -07:00
committed by Ingo Molnar
parent ce8b06b985
commit 11369f356b
3 changed files with 11 additions and 10 deletions
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include/asm-generic/topology.h
+2 -1
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@@ -60,7 +60,8 @@
#ifndef node_to_cpumask_ptr
#define node_to_cpumask_ptr(v, node) \
cpumask_t _##v = node_to_cpumask(node), *v = &_##v
cpumask_t _##v = node_to_cpumask(node); \
const cpumask_t *v = &_##v
#define node_to_cpumask_ptr_next(v, node) \
_##v = node_to_cpumask(node)