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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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4
arch/x86/kernel/smpboot.c
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@@ -123,7 +123,7 @@ EXPORT_SYMBOL(cpu_to_node_map);
static void map_cpu_to_node(int cpu, int node)
{
printk(KERN_INFO "Mapping cpu %d to node %d\n", cpu, node);
cpumask_set_cpu(cpu, &node_to_cpumask_map[node]);
cpumask_set_cpu(cpu, node_to_cpumask_map[node]);
cpu_to_node_map[cpu] = node;
}
@@ -134,7 +134,7 @@ static void unmap_cpu_to_node(int cpu)
printk(KERN_INFO "Unmapping cpu %d from all nodes\n", cpu);
for (node = 0; node < MAX_NUMNODES; node++)
cpumask_clear_cpu(cpu, &node_to_cpumask_map[node]);
cpumask_clear_cpu(cpu, node_to_cpumask_map[node]);
cpu_to_node_map[cpu] = 0;
}
#else /* !(CONFIG_NUMA && CONFIG_X86_32) */