2 * linux/include/asm-generic/topology.h
4 * Written by: Matthew Dobson, IBM Corporation
6 * Copyright (C) 2002, IBM Corp.
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.
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
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.
25 * Send feedback to <colpatch@us.ibm.com>
27 #ifndef _ASM_GENERIC_TOPOLOGY_H
28 #define _ASM_GENERIC_TOPOLOGY_H
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. */
35 #define cpu_to_node(cpu) ((void)(cpu),0)
38 #define parent_node(node) ((void)(node),0)
40 #ifndef node_to_cpumask
41 #define node_to_cpumask(node) ((void)node, cpu_online_map)
43 #ifndef node_to_first_cpu
44 #define node_to_first_cpu(node) ((void)(node),0)
46 #ifndef pcibus_to_node
47 #define pcibus_to_node(bus) ((void)(bus), -1)
50 #ifndef pcibus_to_cpumask
51 #define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \
53 node_to_cpumask(pcibus_to_node(bus)) \
57 #endif /* CONFIG_NUMA */
59 /* returns pointer to cpumask for specified node */
60 #ifndef node_to_cpumask_ptr
62 #define node_to_cpumask_ptr(v, node) \
63 cpumask_t _##v = node_to_cpumask(node), *v = &_##v
65 #define node_to_cpumask_ptr_next(v, node) \
66 _##v = node_to_cpumask(node)
69 #endif /* _ASM_GENERIC_TOPOLOGY_H */