[mirror_ubuntu-hirsute-kernel.git] / arch / i386 / mach-default / topology.c

/*
 * arch/i386/mach-generic/topology.c - Populate driverfs with topology information
 *
 * Written by: Matthew Dobson, IBM Corporation
 * Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL
 *
 * Copyright (C) 2002, IBM Corp.
 *
 * All rights reserved.          
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 * NON INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Send feedback to <colpatch@us.ibm.com>
 */
#include <linux/init.h>
#include <linux/smp.h>
#include <linux/nodemask.h>
#include <asm/cpu.h>

static struct i386_cpu cpu_devices[NR_CPUS];

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);
}

#ifdef CONFIG_HOTPLUG_CPU

void arch_unregister_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 unregister_cpu(&cpu_devices[num].cpu, parent);
}
EXPORT_SYMBOL(arch_register_cpu);
EXPORT_SYMBOL(arch_unregister_cpu);
#endif /*CONFIG_HOTPLUG_CPU*/


#ifdef CONFIG_NUMA
#include <linux/mmzone.h>
#include <asm/node.h>

struct i386_node node_devices[MAX_NUMNODES];

static int __init topology_init(void)
{
	int i;

	for_each_online_node(i)
		arch_register_node(i);

	for_each_present_cpu(i)
		arch_register_cpu(i);
	return 0;
}

#else /* !CONFIG_NUMA */

static int __init topology_init(void)
{
	int i;

	for_each_present_cpu(i)
		arch_register_cpu(i);
	return 0;
}

#endif /* CONFIG_NUMA */

subsys_initcall(topology_init);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* arch/i386/mach-generic/topology.c - Populate driverfs with topology information
	3	*
	4	* Written by: Matthew Dobson, IBM Corporation
	5	* Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL
	6	*
	7	* Copyright (C) 2002, IBM Corp.
	8	*
	9	* All rights reserved.
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License as published by
	13	* the Free Software Foundation; either version 2 of the License, or
	14	* (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful, but
	17	* WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	19	* NON INFRINGEMENT. See the GNU General Public License for more
	20	* details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; if not, write to the Free Software
	24	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	25	*
	26	* Send feedback to <colpatch@us.ibm.com>
	27	*/
	28	#include <linux/init.h>
	29	#include <linux/smp.h>
	30	#include <linux/nodemask.h>
	31	#include <asm/cpu.h>
	32
	33	static struct i386_cpu cpu_devices[NR_CPUS];
	34
	35	int arch_register_cpu(int num){
	36	struct node *parent = NULL;
	37
	38	#ifdef CONFIG_NUMA
	39	int node = cpu_to_node(num);
	40	if (node_online(node))
	41	parent = &node_devices[node].node;
	42	#endif /* CONFIG_NUMA */
	43
	44	return register_cpu(&cpu_devices[num].cpu, num, parent);
	45	}
	46
	47	#ifdef CONFIG_HOTPLUG_CPU
	48
	49	void arch_unregister_cpu(int num) {
	50	struct node *parent = NULL;
	51
	52	#ifdef CONFIG_NUMA
	53	int node = cpu_to_node(num);
	54	if (node_online(node))
	55	parent = &node_devices[node].node;
	56	#endif /* CONFIG_NUMA */
	57
	58	return unregister_cpu(&cpu_devices[num].cpu, parent);
	59	}
	60	EXPORT_SYMBOL(arch_register_cpu);
	61	EXPORT_SYMBOL(arch_unregister_cpu);
	62	#endif /CONFIG_HOTPLUG_CPU/
	63
	64
65
66	#ifdef CONFIG_NUMA
67	#include <linux/mmzone.h>
68	#include <asm/node.h>
69
70	struct i386_node node_devices[MAX_NUMNODES];
71
72	static int __init topology_init(void)
73	{
74	int i;
75
76e4f660 AR	76	for_each_online_node(i)
	77	arch_register_node(i);
	78
a888cebe	79	for_each_present_cpu(i)
76e4f660	80	arch_register_cpu(i);
1da177e4 LT	81	return 0;
	82	}
	83
	84	#else /* !CONFIG_NUMA */
	85
	86	static int __init topology_init(void)
	87	{
	88	int i;
	89
a888cebe	90	for_each_present_cpu(i)
76e4f660	91	arch_register_cpu(i);
1da177e4 LT	92	return 0;
	93	}
	94
	95	#endif /* CONFIG_NUMA */
	96
	97	subsys_initcall(topology_init);