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>

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 6afa523..cad5431 100644 (file)
--- 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;