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 /* Other architectures wishing to use this simple topology API should fill
31    in the below functions as appropriate in their own <asm/topology.h> file. */
32 #ifndef cpu_to_node
33 #define cpu_to_node(cpu)	(0)
34 #endif
35 #ifndef parent_node
36 #define parent_node(node)	(0)
37 #endif
38 #ifndef node_to_cpumask
39 #define node_to_cpumask(node)	(cpu_online_map)
40 #endif
41 #ifndef node_to_first_cpu
42 #define node_to_first_cpu(node)	(0)
43 #endif
44 #ifndef pcibus_to_node
45 #define pcibus_to_node(node)	(-1)
46 #endif
47 
48 #ifndef pcibus_to_cpumask
49 #define pcibus_to_cpumask(bus)	(pcibus_to_node(bus) == -1 ? \
50 					CPU_MASK_ALL : \
51 					node_to_cpumask(pcibus_to_node(bus)) \
52 				)
53 #endif
54 
55 #endif /* _ASM_GENERIC_TOPOLOGY_H */
56