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   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 void build_cpu_to_node_map(void);
  44
  45 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
  46 #define SD_NODE_INIT (struct sched_domain) {            \
  47         .span                   = CPU_MASK_NONE,        \
  48         .parent                 = NULL,                 \
  49         .groups                 = NULL,                 \
  50         .min_interval           = 80,                   \
  51         .max_interval           = 320,                  \
  52         .busy_factor            = 320,                  \
  53         .imbalance_pct          = 125,                  \
  54         .cache_hot_time         = (10*1000000),         \
  55         .cache_nice_tries       = 1,                    \
  56         .per_cpu_gain           = 100,                  \
  57         .flags                  = SD_LOAD_BALANCE       \
  58                                 | SD_BALANCE_EXEC       \
  59                                 | SD_BALANCE_NEWIDLE    \
  60                                 | SD_WAKE_IDLE          \
  61                                 | SD_WAKE_BALANCE,      \
  62         .last_balance           = jiffies,              \
  63         .balance_interval       = 1,                    \
  64         .nr_balance_failed      = 0,                    \
  65 }
  66
  67 /* sched_domains SD_ALLNODES_INIT for IA64 NUMA machines */
  68 #define SD_ALLNODES_INIT (struct sched_domain) {        \
  69         .span                   = CPU_MASK_NONE,        \
  70         .parent                 = NULL,                 \
  71         .groups                 = NULL,                 \
  72         .min_interval           = 80,                   \
  73         .max_interval           = 320,                  \
  74         .busy_factor            = 320,                  \
  75         .imbalance_pct          = 125,                  \
  76         .cache_hot_time         = (10*1000000),         \
  77         .cache_nice_tries       = 1,                    \
  78         .per_cpu_gain           = 100,                  \
  79         .flags                  = SD_LOAD_BALANCE       \
  80                                 | SD_BALANCE_EXEC,      \
  81         .last_balance           = jiffies,              \
  82         .balance_interval       = 100*(63+num_online_cpus())/64,   \
  83         .nr_balance_failed      = 0,                    \
  84 }
  85
  86 #endif /* CONFIG_NUMA */
  87
  88 #include <asm-generic/topology.h>
  89
  90 #endif /* _ASM_IA64_TOPOLOGY_H */