static int __init topology_init(void)
{
	int cpu;

	register_nodes();
	register_cpu_notifier(&sysfs_cpu_nb);

	for_each_possible_cpu(cpu) {
		struct cpu *c = &per_cpu(cpu_devices, cpu);

		if (ppc_md.cpu_die)
			c->hotpluggable = 1;

		if (cpu_online(cpu) || c->hotpluggable) {
			register_cpu(c, cpu);

			device_create_file(&c->dev, &dev_attr_physical_id);
		}

		if (cpu_online(cpu))
			register_cpu_online(cpu);
	}
#ifdef CONFIG_PPC64
	sysfs_create_dscr_default();
#endif 

	return 0;
}

static int __init topology_init(void)
{
    int cpu;

    register_nodes();
    register_cpu_notifier(&sysfs_cpu_nb);

    for_each_possible_cpu(cpu) {
        struct cpu *c = &per_cpu(cpu_devices, cpu);

        /*
         * For now, we just see if the system supports making
         * the RTAS calls for CPU hotplug.  But, there may be a
         * more comprehensive way to do this for an individual
         * CPU.  For instance, the boot cpu might never be valid
         * for hotplugging.
         */
        if (!ppc_md.cpu_die)
            c->no_control = 1;

        if (cpu_online(cpu) || (c->no_control == 0)) {
            register_cpu(c, cpu);

            sysdev_create_file(&c->sysdev, &attr_physical_id);
        }

        if (cpu_online(cpu))
            register_cpu_online(cpu);
    }

    return 0;
}

static int __init topology_init(void)
{
	int i, ret;

#ifdef CONFIG_NEED_MULTIPLE_NODES
	for_each_online_node(i)
		register_one_node(i);
#endif

	for_each_present_cpu(i) {
		struct cpu *c = &per_cpu(cpu_devices, i);

		c->hotpluggable = 1;

		ret = register_cpu(c, i);
		if (unlikely(ret))
			printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n",
			       __func__, i, ret);
	}

#if defined(CONFIG_NUMA) && !defined(CONFIG_SMP)
	for_each_online_node(i)
		if (i != numa_node_id())
			register_cpu_under_node(raw_smp_processor_id(), i);
#endif

	return 0;
}

static int __init topology_init(void)
{
	int i, ret;

#ifdef CONFIG_NEED_MULTIPLE_NODES
	for_each_online_node(i)
		register_one_node(i);
#endif

	for_each_present_cpu(i) {
		ret = register_cpu(&per_cpu(cpu_devices, i), i);
		if (unlikely(ret))
			printk(KERN_WARNING "%s: register_cpu %d failed (%d)\n",
			       __FUNCTION__, i, ret);
	}

#if defined(CONFIG_NUMA) && !defined(CONFIG_SMP)
	/*
	 * In the UP case, make sure the CPU association is still
	 * registered under each node. Without this, sysfs fails
	 * to make the connection between nodes other than node0
	 * and cpu0.
	 */
	for_each_online_node(i)
		if (i != numa_node_id())
			register_cpu_under_node(raw_smp_processor_id(), i);
#endif

	return 0;
}

static int __init topology_init(void)
{
	int num;

	for_each_present_cpu(num) {
		register_cpu(&per_cpu(cpu_devices, num), num);
	}
	return 0;
}

static int __init topology_init(void)
{
	int cpu;

	for_each_present_cpu(cpu)
	    register_cpu(&per_cpu(cpu_topology, cpu), cpu);

	return 0;
}

static int __init topology_init(void)
{
    int i;

    for_each_present_cpu(i)
    register_cpu(&cpu_devices[i], i);

    return 0;
}

static int __init topology_init(void)
{
	int i;

	for_each_possible_cpu(i) {
		 return register_cpu(&cpu_devices[i], i);
	}

	return 0;
}

int arch_register_cpu(int num) {
    struct node *parent = NULL;

#ifdef CONFIG_NUMA
    int node = cpu_to_node(num);
    if (node_online(node))
        parent = &node_devices[node].node;
#endif /* CONFIG_NUMA */

    return register_cpu(&cpu_devices[num].cpu, num, parent);
}

static int __init topology_init(void)
{
	int i;

	for_each_possible_cpu(i) {
		struct cpu *cpu = &per_cpu(cpu_data, i);
		cpu->hotpluggable = !!i;
		register_cpu(cpu, i);
	}

	return 0;
}

int __ref arch_register_cpu(int num)
{
#ifdef CONFIG_ACPI
	/*
	 * If CPEI can be re-targetted or if this is not
	 * CPEI target, then it is hotpluggable
	 */
	if (can_cpei_retarget() || !is_cpu_cpei_target(num))
		sysfs_cpus[num].cpu.hotpluggable = 1;
	map_cpu_to_node(num, node_cpuid[num].nid);
#endif
	return register_cpu(&sysfs_cpus[num].cpu, num);
}

int arch_register_cpu(int num)
{
	/*
	 * CPU0 cannot be offlined due to several
	 * restrictions and assumptions in kernel. This basically
	 * doesnt add a control file, one cannot attempt to offline
	 * BSP.
	 */
	if (!num)
		cpu_devices[num].cpu.no_control = 1;

	return register_cpu(&cpu_devices[num].cpu, num);
}

int arch_register_cpu(int num)
{
#if defined (CONFIG_ACPI) && defined (CONFIG_HOTPLUG_CPU)
	/*
	 * If CPEI cannot be re-targetted, and this is
	 * CPEI target, then dont create the control file
	 */
	if (!can_cpei_retarget() && is_cpu_cpei_target(num))
		sysfs_cpus[num].cpu.no_control = 1;
	map_cpu_to_node(num, node_cpuid[num].nid);
#endif

	return register_cpu(&sysfs_cpus[num].cpu, num);
}

static int __init topology_init(void)
{
	int cpu;
	int ret;

	for_each_cpu(cpu) {
		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
		if (ret)
			printk(KERN_WARNING "topology_init: register_cpu %d "
			       "failed (%d)\n", cpu, ret);
	}

	return 0;
}

static int __init topology_init(void)
{
	int i, ret;

	for_each_present_cpu(i) {


		ret = register_cpu(&per_cpu(cpu_devices, i), i);
		if (ret)
			printk(KERN_WARNING "topology_init: register_cpu %d "
			       "failed (%d)\n", i, ret);
	}

	return 0;
}

int arch_register_cpu(int num)
{
	/*
	 * CPU0 cannot be offlined due to several
	 * restrictions and assumptions in kernel. This basically
	 * doesnt add a control file, one cannot attempt to offline
	 * BSP.
	 *
	 * Also certain PCI quirks require not to enable hotplug control
	 * for all CPU's.
	 */
	if (num && enable_cpu_hotplug)
		cpu_devices[num].cpu.hotpluggable = 1;

	return register_cpu(&cpu_devices[num].cpu, num);
}

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) {
		ret = register_cpu(&per_cpu(cpu_devices, i), i);
		if (ret)
			printk(KERN_WARNING "topology_init: register_cpu %d "
			       "failed (%d)\n", i, ret);
	}
	return 0;
}

int __init ppc_init(void)
{
	int i;

	/* clear the progress line */
	if ( ppc_md.progress ) ppc_md.progress("             ", 0xffff);

	/* register CPU devices */
	for (i = 0; i < NR_CPUS; i++)
		if (cpu_possible(i))
			register_cpu(&cpu_devices[i], i, NULL);

	/* call platform init */
	if (ppc_md.init != NULL) {
		ppc_md.init();
	}
	return 0;
}

static int __init topology_init(void)
{
	int i, ret;

	for_each_present_cpu(i) {

		/*
		 * register_cpu takes a per_cpu pointer and
		 * just points it at another per_cpu struct...
		 */

		ret = register_cpu(&per_cpu(cpu_devices, i), i);
		if (ret)
			printk(KERN_WARNING "topology_init: register_cpu %d "
			       "failed (%d)\n", i, ret);
	}

	return 0;
}

int arch_register_cpu(int num)
{
	struct node *parent = NULL;
	
#ifdef CONFIG_NUMA
	parent = &sysfs_nodes[cpu_to_node(num)];
#endif /* CONFIG_NUMA */

#ifdef CONFIG_ACPI_BOOT
	/*
	 * If CPEI cannot be re-targetted, and this is
	 * CPEI target, then dont create the control file
	 */
	if (!can_cpei_retarget() && is_cpu_cpei_target(num))
		sysfs_cpus[num].cpu.no_control = 1;
#endif

	return register_cpu(&sysfs_cpus[num].cpu, num, parent);
}