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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/i386/mach-default/topology.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/i386/mach-default/topology.c')
-rw-r--r--arch/i386/mach-default/topology.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/i386/mach-default/topology.c b/arch/i386/mach-default/topology.c
new file mode 100644
index 000000000000..5b3e8817dae8
--- /dev/null
+++ b/arch/i386/mach-default/topology.c
@@ -0,0 +1,98 @@
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
33static struct i386_cpu cpu_devices[NR_CPUS];
34
35int 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
49void 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}
60EXPORT_SYMBOL(arch_register_cpu);
61EXPORT_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
70struct i386_node node_devices[MAX_NUMNODES];
71
72static int __init topology_init(void)
73{
74 int i;
75
76 for (i = 0; i < MAX_NUMNODES; i++) {
77 if (node_online(i))
78 arch_register_node(i);
79 }
80 for (i = 0; i < NR_CPUS; i++)
81 if (cpu_possible(i)) arch_register_cpu(i);
82 return 0;
83}
84
85#else /* !CONFIG_NUMA */
86
87static int __init topology_init(void)
88{
89 int i;
90
91 for (i = 0; i < NR_CPUS; i++)
92 if (cpu_possible(i)) arch_register_cpu(i);
93 return 0;
94}
95
96#endif /* CONFIG_NUMA */
97
98subsys_initcall(topology_init);