LXR linux/include/asm-generic/topology.h

   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