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topology.h
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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 <[email protected]>
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 parent_node
48 #define parent_node(node) ((void)(node),0)
49 #endif
50 #ifndef cpumask_of_node
51 #define cpumask_of_node(node) ((void)node, cpu_online_mask)
52 #endif
53 #ifndef pcibus_to_node
54 #define pcibus_to_node(bus) ((void)(bus), -1)
55 #endif
56 
57 #ifndef cpumask_of_pcibus
58 #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
59  cpu_all_mask : \
60  cpumask_of_node(pcibus_to_node(bus)))
61 #endif
62 
63 #endif /* CONFIG_NUMA */
64 
65 #if !defined(CONFIG_NUMA) || !defined(CONFIG_HAVE_MEMORYLESS_NODES)
66 
67 #ifndef set_numa_mem
68 #define set_numa_mem(node)
69 #endif
70 #ifndef set_cpu_numa_mem
71 #define set_cpu_numa_mem(cpu, node)
72 #endif
73 
74 #endif /* !CONFIG_NUMA || !CONFIG_HAVE_MEMORYLESS_NODES */
75 
76 #endif /* _ASM_GENERIC_TOPOLOGY_H */