// SPDX-License-Identifier: GPL-2.0 #include <linux/cpu.h> #include <linux/cpumask.h> #include <linux/init.h> #include <linux/node.h> #include <linux/nodemask.h> #include <linux/percpu.h> static DEFINE_PER_CPU(struct cpu, cpu_devices); static int __init topology_init(void) { int i, ret; #ifdef CONFIG_NUMA for_each_online_node(i) register_one_node(i); #endif /* CONFIG_NUMA */ for_each_present_cpu(i) { struct cpu *c = &per_cpu(cpu_devices, i); c->hotpluggable = !!i; ret = register_cpu(c, i); if (ret) printk(KERN_WARNING "topology_init: register_cpu %d " "failed (%d)\n", i, ret); } return 0; } subsys_initcall(topology_init);