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authorMike Travis <travis@sgi.com>2008-07-08 14:35:21 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-13 19:11:58 +0200
commit11369f356b66d363a615fde2c5526962f7683674 (patch)
tree9723013073973c413e7cde295e99221ff40afca3 /include/asm-x86/topology.h
parentce8b06b985ae48f9425de6e4641e77cb3613ef00 (diff)
x86: change _node_to_cpumask_ptr to return const ptr
* 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>
Diffstat (limited to 'include/asm-x86/topology.h')
-rw-r--r--include/asm-x86/topology.h10
1 files changed, 5 insertions, 5 deletions
diff --git a/include/asm-x86/topology.h b/include/asm-x86/topology.h
index 98e5f17ea856..90ac7718469a 100644
--- a/include/asm-x86/topology.h
+++ b/include/asm-x86/topology.h
@@ -82,7 +82,7 @@ DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
extern int cpu_to_node(int cpu);
extern int early_cpu_to_node(int cpu);
-extern cpumask_t *_node_to_cpumask_ptr(int node);
+extern const cpumask_t *_node_to_cpumask_ptr(int node);
extern cpumask_t node_to_cpumask(int node);
#else /* !CONFIG_DEBUG_PER_CPU_MAPS */
@@ -103,7 +103,7 @@ static inline int early_cpu_to_node(int cpu)
}
/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
-static inline cpumask_t *_node_to_cpumask_ptr(int node)
+static inline const cpumask_t *_node_to_cpumask_ptr(int node)
{
return &node_to_cpumask_map[node];
}
@@ -118,7 +118,7 @@ static inline cpumask_t node_to_cpumask(int node)
/* Replace default node_to_cpumask_ptr with optimized version */
#define node_to_cpumask_ptr(v, node) \
- cpumask_t *v = _node_to_cpumask_ptr(node)
+ const cpumask_t *v = _node_to_cpumask_ptr(node)
#define node_to_cpumask_ptr_next(v, node) \
v = _node_to_cpumask_ptr(node)
@@ -186,7 +186,7 @@ extern int __node_distance(int, int);
#define cpu_to_node(cpu) 0
#define early_cpu_to_node(cpu) 0
-static inline cpumask_t *_node_to_cpumask_ptr(int node)
+static inline const cpumask_t *_node_to_cpumask_ptr(int node)
{
return &cpu_online_map;
}
@@ -201,7 +201,7 @@ static inline int node_to_first_cpu(int node)
/* Replace default node_to_cpumask_ptr with optimized version */
#define node_to_cpumask_ptr(v, node) \
- cpumask_t *v = _node_to_cpumask_ptr(node)
+ const cpumask_t *v = _node_to_cpumask_ptr(node)
#define node_to_cpumask_ptr_next(v, node) \
v = _node_to_cpumask_ptr(node)