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Commit c90e785b authored by Mike Travis's avatar Mike Travis Committed by Ingo Molnar
Browse files

cpumask: use cpumask_var_t in dcdbas.c 



Impact: reduce stack usage.

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

Signed-off-by: default avatarMike Travis <travis@sgi.com>
parent f9b90566

drivers/firmware/dcdbas.c

+8 −4
Original line number Diff line number Diff line
@@ -244,7 +244,7 @@ static ssize_t host_control_on_shutdown_store(struct device *dev, 
 */

int dcdbas_smi_request(struct smi_cmd *smi_cmd)

{

	cpumask_t old_mask;

	cpumask_var_t old_mask;

	int ret = 0;



	if (smi_cmd->magic != SMI_CMD_MAGIC) {
@@ -254,8 +254,11 @@ int dcdbas_smi_request(struct smi_cmd *smi_cmd) 
	}



	/* SMI requires CPU 0 */

	old_mask = current->cpus_allowed;

	set_cpus_allowed_ptr(current, &cpumask_of_cpu(0));

	if (!alloc_cpumask_var(&old_mask, GFP_KERNEL))

		return -ENOMEM;



	cpumask_copy(old_mask, &current->cpus_allowed);

	set_cpus_allowed_ptr(current, cpumask_of(0));

	if (smp_processor_id() != 0) {

		dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",

			__func__);
@@ -275,7 +278,8 @@ int dcdbas_smi_request(struct smi_cmd *smi_cmd) 
	);



out:

	set_cpus_allowed_ptr(current, &old_mask);

	set_cpus_allowed_ptr(current, old_mask);

	free_cpumask_var(old_mask);

	return ret;

}