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