cpumask: convert c1e_mask in arch/x86/kernel/process.c to cpumask_var_t.

Impact: reduce kernel size when CONFIG_CPUMASK_OFFSTACK=y

Simple conversion.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 6 insertions, 4 deletions

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 6afa5232dbb7..cad5431951aa 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -474,12 +474,12 @@ static int __cpuinit check_c1e_idle(const struct cpuinfo_x86 *c)
         return 1;
 }
 
-static cpumask_t c1e_mask = CPU_MASK_NONE;
+static cpumask_var_t c1e_mask;
 static int c1e_detected;
 
 void c1e_remove_cpu(int cpu)
 {
-        cpu_clear(cpu, c1e_mask);
+        cpumask_clear_cpu(cpu, c1e_mask);
 }
 
 /*
@@ -508,8 +508,8 @@ static void c1e_idle(void)
         if (c1e_detected) {
                 int cpu = smp_processor_id();
 
-                if (!cpu_isset(cpu, c1e_mask)) {
-                        cpu_set(cpu, c1e_mask);
+                if (!cpumask_test_cpu(cpu, c1e_mask)) {
+                        cpumask_set_cpu(cpu, c1e_mask);
                         /*
                          * Force broadcast so ACPI can not interfere. Needs
                          * to run with interrupts enabled as it uses
@@ -556,6 +556,8 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
                 pm_idle = mwait_idle;
         } else if (check_c1e_idle(c)) {
                 printk(KERN_INFO "using C1E aware idle routine\n");
+                alloc_cpumask_var(&c1e_mask, GFP_KERNEL);
+                cpumask_clear(c1e_mask);
                 pm_idle = c1e_idle;
         } else
                 pm_idle = default_idle;