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cpumask: use alloc_cpumask_var_node where appropriate

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Impact: Reduce inter-node memory traffic.

Reduces inter-node memory traffic (offloading the global system bus)
by allocating referenced struct cpumasks on the same node as the
referring struct.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Mike Travis
2008-12-31 18:08:47 -08:00
committed by Ingo Molnar
parent 2fdf66b491
commit 80855f7361
2 changed files with 6 additions and 5 deletions
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5
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
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@ -547,8 +547,9 @@ static int __init acpi_cpufreq_early_init(void)
return -ENOMEM;
}
for_each_possible_cpu(i) {
if (!alloc_cpumask_var(&per_cpu_ptr(acpi_perf_data, i)
->shared_cpu_map, GFP_KERNEL)) {
if (!alloc_cpumask_var_node(
&per_cpu_ptr(acpi_perf_data, i)->shared_cpu_map,
GFP_KERNEL, cpu_to_node(i))) {
/* Freeing a NULL pointer is OK: alloc_percpu zeroes. */
free_acpi_perf_data();