99 lines
2.4 KiB
C
99 lines
2.4 KiB
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 (i = 0; i < MAX_NUMNODES; i++) {
|
||
|
|
if (node_online(i))
|
||
|
|
arch_register_node(i);
|
||
|
|
}
|
||
|
|
for (i = 0; i < NR_CPUS; i++)
|
||
|
|
if (cpu_possible(i)) arch_register_cpu(i);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#else /* !CONFIG_NUMA */
|
||
|
|
|
||
|
|
static int __init topology_init(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < NR_CPUS; i++)
|
||
|
|
if (cpu_possible(i)) arch_register_cpu(i);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* CONFIG_NUMA */
|
||
|
|
|
||
|
|
subsys_initcall(topology_init);
|