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_cpumask(node) (node_to_cpu_mask[node])
  30
  31 /*
  32  * Returns the number of the node containing Node 'nid'.
  33  * Not implemented here. Multi-level hierarchies detected with
  34  * the help of node_distance().
  35  */
  36 #define parent_node(nid) (nid)
  37
  38 /*
  39  * Returns the number of the first CPU on Node 'node'.
  40  */
  41 #define node_to_first_cpu(node) (__ffs(node_to_cpumask(node)))
  42
  43 /* Cross-node load balancing interval. */
  44 #define NODE_BALANCE_RATE 10
  45
  46 void build_cpu_to_node_map(void);
  47
  48 #endif /* CONFIG_NUMA */
  49
  50 #include <asm-generic/topology.h>
  51
  52 #endif /* _ASM_IA64_TOPOLOGY_H */