1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/cpu.h>
3 #include <linux/cpumask.h>
4 #include <linux/init.h>
5 #include <linux/node.h>
6 #include <linux/nodemask.h>
7 #include <linux/percpu.h>
8 
9 static DEFINE_PER_CPU(struct cpu, cpu_devices);
10 
topology_init(void)11 static int __init topology_init(void)
12 {
13 	int i, ret;
14 
15 #ifdef CONFIG_NUMA
16 	for_each_online_node(i)
17 		register_one_node(i);
18 #endif /* CONFIG_NUMA */
19 
20 	for_each_present_cpu(i) {
21 		struct cpu *c = &per_cpu(cpu_devices, i);
22 
23 		c->hotpluggable = !!i;
24 		ret = register_cpu(c, i);
25 		if (ret)
26 			printk(KERN_WARNING "topology_init: register_cpu %d "
27 			       "failed (%d)\n", i, ret);
28 	}
29 
30 	return 0;
31 }
32 
33 subsys_initcall(topology_init);
34