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cpumask: convert node_to_cpumask_map[] to cpumask_var_t

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Impact: reduce kernel memory usage when CONFIG_CPUMASK_OFFSTACK=y

Straightforward conversion: done for 32 and 64 bit kernels.
node_to_cpumask_map is now a cpumask_var_t array.

64-bit used to be a dynamic cpumask_t array, and 32-bit used to be a
static cpumask_t array.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2009-03-13 14:49:53 +10:30
parent 71ee73e722
commit c032ef60d1
4 changed files with 24 additions and 28 deletions
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6
arch/x86/include/asm/topology.h
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@@ -86,15 +86,15 @@ static inline int early_cpu_to_node(int cpu)
#endif /* CONFIG_X86_64 */
/* Mappings between node number and cpus on that node. */
extern cpumask_t *node_to_cpumask_map;
extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
extern const cpumask_t *cpumask_of_node(int node);
#else
/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
static inline const cpumask_t *cpumask_of_node(int node)
static inline const struct cpumask *cpumask_of_node(int node)
{
return &node_to_cpumask_map[node];
return node_to_cpumask_map[node];
}
#endif