diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.c | 98 |
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 | |||
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 | |||
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 | |||
87 | static 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 | |||
98 | subsys_initcall(topology_init); | ||