1 // SPDX-License-Identifier: GPL-2.0 <<
2 #include <linux/acpi.h> <<
3 #include <linux/cpu.h> 1 #include <linux/cpu.h>
4 #include <linux/cpumask.h> 2 #include <linux/cpumask.h>
5 #include <linux/init.h> 3 #include <linux/init.h>
6 #include <linux/node.h> 4 #include <linux/node.h>
7 #include <linux/nodemask.h> 5 #include <linux/nodemask.h>
8 #include <linux/percpu.h> 6 #include <linux/percpu.h>
9 #include <asm/bootinfo.h> <<
10 7
11 #include <acpi/processor.h> !! 8 static DEFINE_PER_CPU(struct cpu, cpu_devices);
12 9
13 #ifdef CONFIG_HOTPLUG_CPU !! 10 static int __init topology_init(void)
14 bool arch_cpu_is_hotpluggable(int cpu) <<
15 { 11 {
16 return !io_master(cpu); !! 12 int i, ret;
>> 13
>> 14 #ifdef CONFIG_NUMA
>> 15 for_each_online_node(i)
>> 16 register_one_node(i);
>> 17 #endif /* CONFIG_NUMA */
>> 18
>> 19 for_each_present_cpu(i) {
>> 20 struct cpu *c = &per_cpu(cpu_devices, i);
>> 21
>> 22 c->hotpluggable = !!i;
>> 23 ret = register_cpu(c, i);
>> 24 if (ret)
>> 25 printk(KERN_WARNING "topology_init: register_cpu %d "
>> 26 "failed (%d)\n", i, ret);
>> 27 }
>> 28
>> 29 return 0;
17 } 30 }
18 #endif !! 31
>> 32 subsys_initcall(topology_init);
19 33
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