1/*
2 * linux/include/asm-generic/topology.h
3 *
4 * Written by: Matthew Dobson, IBM Corporation
5 *
6 * Copyright (C) 2002, IBM Corp.
7 *
8 * All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
18 * NON INFRINGEMENT. See the GNU General Public License for more
19 * details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * Send feedback to <colpatch@us.ibm.com>
26 */
27#ifndef _ASM_GENERIC_TOPOLOGY_H
28#define _ASM_GENERIC_TOPOLOGY_H
29
30#ifndef CONFIG_NUMA
31
32/* Other architectures wishing to use this simple topology API should fill
33 in the below functions as appropriate in their own <asm/topology.h> file. */
34#ifndef cpu_to_node
35#define cpu_to_node(cpu) ((void)(cpu),0)
36#endif
37#ifndef set_numa_node
38#define set_numa_node(node)
39#endif
40#ifndef set_cpu_numa_node
41#define set_cpu_numa_node(cpu, node)
42#endif
43#ifndef cpu_to_mem
44#define cpu_to_mem(cpu) ((void)(cpu),0)
45#endif
46
47#ifndef cpumask_of_node
48 #ifdef CONFIG_NUMA
49 #define cpumask_of_node(node) ((node) == 0 ? cpu_online_mask : cpu_none_mask)
50 #else
51 #define cpumask_of_node(node) ((void)(node), cpu_online_mask)
52 #endif
53#endif
54#ifndef pcibus_to_node
55#define pcibus_to_node(bus) ((void)(bus), -1)
56#endif
57
58#ifndef cpumask_of_pcibus
59#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
60 cpu_all_mask : \
61 cpumask_of_node(pcibus_to_node(bus)))
62#endif
63
64#endif /* CONFIG_NUMA */
65
66#if !defined(CONFIG_NUMA) || !defined(CONFIG_HAVE_MEMORYLESS_NODES)
67
68#ifndef set_numa_mem
69#define set_numa_mem(node)
70#endif
71#ifndef set_cpu_numa_mem
72#define set_cpu_numa_mem(cpu, node)
73#endif
74
75#endif /* !CONFIG_NUMA || !CONFIG_HAVE_MEMORYLESS_NODES */
76
77#endif /* _ASM_GENERIC_TOPOLOGY_H */
78