topology.h 1.7 KB

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