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Linux kernel mirror (for testing)
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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 parent_node
38#define parent_node(node) ((void)(node),0)
39#endif
40#ifndef node_to_cpumask
41#define node_to_cpumask(node) ((void)node, cpu_online_map)
42#endif
43#ifndef cpumask_of_node
44#define cpumask_of_node(node) ((void)node, cpu_online_mask)
45#endif
46#ifndef node_to_first_cpu
47#define node_to_first_cpu(node) ((void)(node),0)
48#endif
49#ifndef pcibus_to_node
50#define pcibus_to_node(bus) ((void)(bus), -1)
51#endif
52
53#ifndef pcibus_to_cpumask
54#define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
55 CPU_MASK_ALL : \
56 node_to_cpumask(pcibus_to_node(bus)) \
57 )
58#endif
59
60#ifndef cpumask_of_pcibus
61#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
62 cpu_all_mask : \
63 cpumask_of_node(pcibus_to_node(bus)))
64#endif
65
66#endif /* CONFIG_NUMA */
67
68/*
69 * returns pointer to cpumask for specified node
70 * Deprecated: use "const struct cpumask *mask = cpumask_of_node(node)"
71 */
72#ifndef node_to_cpumask_ptr
73
74#define node_to_cpumask_ptr(v, node) \
75 cpumask_t _##v = node_to_cpumask(node); \
76 const cpumask_t *v = &_##v
77
78#define node_to_cpumask_ptr_next(v, node) \
79 _##v = node_to_cpumask(node)
80#endif
81
82#endif /* _ASM_GENERIC_TOPOLOGY_H */