cpumask: Optimize cpumask_of_cpu in arch/x86/kernel/ldt.c

  * Optimize various places where a pointer to the cpumask_of_cpu value
    will result in reducing stack pressure.

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index a8449571858a..3fee2aa50f3f 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -62,12 +62,12 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
 
         if (reload) {
 #ifdef CONFIG_SMP
-                cpumask_t mask;
+                cpumask_of_cpu_ptr_declare(mask);
 
                 preempt_disable();
                 load_LDT(pc);
-                mask = cpumask_of_cpu(smp_processor_id());
-                if (!cpus_equal(current->mm->cpu_vm_mask, mask))
+                cpumask_of_cpu_ptr_next(mask, smp_processor_id());
+                if (!cpus_equal(current->mm->cpu_vm_mask, *mask))
                         smp_call_function(flush_ldt, current->mm, 1);
                 preempt_enable();
 #else