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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 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 */
  77.