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