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cpumask: use cpumask_var_t in dcdbas.c

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Impact: reduce stack usage.

Replace cpumask_t with cpumask_var_t in drivers/firmware/dcdbas.c.

Signed-off-by: Mike Travis <travis@sgi.com>
This commit is contained in:
Mike Travis 2009-01-10 21:58:10 -08:00 committed by Ingo Molnar
parent f9b90566cd
commit c90e785be2
1 changed files with 8 additions and 4 deletions
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12
drivers/firmware/dcdbas.c
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@ -244,7 +244,7 @@ static ssize_t host_control_on_shutdown_store(struct device *dev,
*/ */
int dcdbas_smi_request(struct smi_cmd *smi_cmd) int dcdbas_smi_request(struct smi_cmd *smi_cmd)
{ {
cpumask_t old_mask; cpumask_var_t old_mask;
int ret = 0; int ret = 0;
if (smi_cmd->magic != SMI_CMD_MAGIC) { if (smi_cmd->magic != SMI_CMD_MAGIC) {
@ -254,8 +254,11 @@ int dcdbas_smi_request(struct smi_cmd *smi_cmd)
} }
/* SMI requires CPU 0 */ /* SMI requires CPU 0 */
old_mask = current->cpus_allowed; if (!alloc_cpumask_var(&old_mask, GFP_KERNEL))
set_cpus_allowed_ptr(current, &cpumask_of_cpu(0)); return -ENOMEM;
cpumask_copy(old_mask, &current->cpus_allowed);
set_cpus_allowed_ptr(current, cpumask_of(0));
if (smp_processor_id() != 0) { if (smp_processor_id() != 0) {
dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n", dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
__func__); __func__);
@ -275,7 +278,8 @@ int dcdbas_smi_request(struct smi_cmd *smi_cmd)
); );
out: out:
set_cpus_allowed_ptr(current, &old_mask); set_cpus_allowed_ptr(current, old_mask);
free_cpumask_var(old_mask);
return ret; return ret;
} }