LXR linux-old/include/asm-ia64/topology.h

   1/*
   2 * linux/include/asm-ia64/topology.h
   3 *
   4 * Copyright (C) 2002, Erich Focht, NEC
   5 *
   6 * All rights reserved.
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 */
  13#ifndef _ASM_IA64_TOPOLOGY_H
  14#define _ASM_IA64_TOPOLOGY_H
  15
  16#include <asm/acpi.h>
  17#include <asm/numa.h>
  18#include <asm/smp.h>
  19
  20#ifdef CONFIG_NUMA
  21/*
  22 * Returns the number of the node containing CPU 'cpu'
  23 */
  24#define __cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
  25
  26/*
  27 * Returns a bitmask of CPUs on Node 'node'.
  28 */
  29#define __node_to_cpu_mask(node) (node_to_cpu_mask[node])
  30
  31#else
  32#define __cpu_to_node(cpu) (0)
  33#define __node_to_cpumask(node) (&phys_cpu_present_map)
  34#endif
  35
  36/*
  37 * Returns the number of the node containing MemBlk 'memblk'
  38 */
  39#ifdef CONFIG_ACPI_NUMA
  40#define __memblk_to_node(memblk) (node_memblk[memblk].nid)
  41#else
  42#define __memblk_to_node(memblk) (memblk)
  43#endif
  44
  45/*
  46 * Returns the number of the node containing Node 'nid'.
  47 * Not implemented here. Multi-level hierarchies detected with
  48 * the help of node_distance().
  49 */
  50#define __parent_node(nid) (nid)
  51
  52/*
  53 * Returns the number of the first CPU on Node 'node'.
  54 */
  55#define __node_to_first_cpu(node) (__ffs(__node_to_cpu_mask(node)))
  56
  57/*
  58 * Returns the number of the first MemBlk on Node 'node'
  59 * Should be fixed when IA64 discontigmem goes in.
  60 */
  61#define __node_to_memblk(node) (node)
  62
  63#endif /* _ASM_IA64_TOPOLOGY_H */
  64