1 /* 2 * arch/sh/kernel/topology.c 3 * 4 * Copyright (C) 2007 Paul Mundt 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 */ 10 #include <linux/cpu.h> 11 #include <linux/cpumask.h> 12 #include <linux/init.h> 13 #include <linux/percpu.h> 14 #include <linux/node.h> 15 #include <linux/nodemask.h> 16 17 static DEFINE_PER_CPU(struct cpu, cpu_devices); 18 19 static int __init topology_init(void) 20 { 21 int i, ret; 22 23 #ifdef CONFIG_NEED_MULTIPLE_NODES 24 for_each_online_node(i) 25 register_one_node(i); 26 #endif 27 28 for_each_present_cpu(i) { 29 ret = register_cpu(&per_cpu(cpu_devices, i), i); 30 if (unlikely(ret)) 31 printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n", 32 __func__, i, ret); 33 } 34 35 #if defined(CONFIG_NUMA) && !defined(CONFIG_SMP) 36 /* 37 * In the UP case, make sure the CPU association is still 38 * registered under each node. Without this, sysfs fails 39 * to make the connection between nodes other than node0 40 * and cpu0. 41 */ 42 for_each_online_node(i) 43 if (i != numa_node_id()) 44 register_cpu_under_node(raw_smp_processor_id(), i); 45 #endif 46 47 return 0; 48 } 49 subsys_initcall(topology_init); 50