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Commit bc9b83dd authored by Rusty Russell's avatar Rusty Russell
Browse files

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: default avatarRusty Russell <rusty@rustcorp.com.au>
parent d3d2e7f2

arch/x86/kernel/process.c

+6 −4
Original line number Diff line number Diff line
@@ -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;