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cpumask: x86: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask

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Impact: New APIs

The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these
return a pointer to a struct cpumask.  Part of removing cpumasks from
the stack.

Also makes __pcibus_to_node take a const pointer.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Rusty Russell
2008-12-26 22:23:38 +10:30
parent d62720ade8
commit 393d68fb99
3 changed files with 35 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/kernel/setup_percpu.c
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@@ -334,25 +334,25 @@ static const cpumask_t cpu_mask_none;
/*
* Returns a pointer to the bitmask of CPUs on Node 'node'.
*/
const cpumask_t *_node_to_cpumask_ptr(int node)
const cpumask_t *cpumask_of_node(int node)
{
if (node_to_cpumask_map == NULL) {
printk(KERN_WARNING
"_node_to_cpumask_ptr(%d): no node_to_cpumask_map!\n",
"cpumask_of_node(%d): no node_to_cpumask_map!\n",
node);
dump_stack();
return (const cpumask_t *)&cpu_online_map;
}
if (node >= nr_node_ids) {
printk(KERN_WARNING
"_node_to_cpumask_ptr(%d): node > nr_node_ids(%d)\n",
"cpumask_of_node(%d): node > nr_node_ids(%d)\n",
node, nr_node_ids);
dump_stack();
return &cpu_mask_none;
}
return &node_to_cpumask_map[node];
}
EXPORT_SYMBOL(_node_to_cpumask_ptr);
EXPORT_SYMBOL(cpumask_of_node);
/*
* Returns a bitmask of CPUs on Node 'node'.