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 void build_cpu_to_node_map(void);
  44
  45 #define SD_CPU_INIT (struct sched_domain) {             \
  46         .span                   = CPU_MASK_NONE,        \
  47         .parent                 = NULL,                 \
  48         .groups                 = NULL,                 \
  49         .min_interval           = 1,                    \
  50         .max_interval           = 4,                    \
  51         .busy_factor            = 64,                   \
  52         .imbalance_pct          = 125,                  \
  53         .cache_hot_time         = (10*1000000),         \
  54         .per_cpu_gain           = 100,                  \
  55         .cache_nice_tries       = 2,                    \
  56         .busy_idx               = 2,                    \
  57         .idle_idx               = 1,                    \
  58         .newidle_idx            = 2,                    \
  59         .wake_idx               = 1,                    \
  60         .forkexec_idx           = 1,                    \
  61         .flags                  = SD_LOAD_BALANCE       \
  62                                 | SD_BALANCE_NEWIDLE    \
  63                                 | SD_BALANCE_EXEC       \
  64                                 | SD_WAKE_AFFINE,       \
  65         .last_balance           = jiffies,              \
  66         .balance_interval       = 1,                    \
  67         .nr_balance_failed      = 0,                    \
  68 }
  69
  70 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
  71 #define SD_NODE_INIT (struct sched_domain) {            \
  72         .span                   = CPU_MASK_NONE,        \
  73         .parent                 = NULL,                 \
  74         .groups                 = NULL,                 \
  75         .min_interval           = 8,                    \
  76         .max_interval           = 8*(min(num_online_cpus(), 32)), \
  77         .busy_factor            = 64,                   \
  78         .imbalance_pct          = 125,                  \
  79         .cache_hot_time         = (10*1000000),         \
  80         .cache_nice_tries       = 2,                    \
  81         .busy_idx               = 3,                    \
  82         .idle_idx               = 2,                    \
  83         .newidle_idx            = 0, /* unused */       \
  84         .wake_idx               = 1,                    \
  85         .forkexec_idx           = 1,                    \
  86         .per_cpu_gain           = 100,                  \
  87         .flags                  = SD_LOAD_BALANCE       \
  88                                 | SD_BALANCE_EXEC       \
  89                                 | SD_BALANCE_FORK       \
  90                                 | SD_WAKE_BALANCE,      \
  91         .last_balance           = jiffies,              \
  92         .balance_interval       = 64,                   \
  93         .nr_balance_failed      = 0,                    \
  94 }
  95
  96 /* sched_domains SD_ALLNODES_INIT for IA64 NUMA machines */
  97 #define SD_ALLNODES_INIT (struct sched_domain) {        \
  98         .span                   = CPU_MASK_NONE,        \
  99         .parent                 = NULL,                 \
 100         .groups                 = NULL,                 \
 101         .min_interval           = 64,                   \
 102         .max_interval           = 64*num_online_cpus(), \
 103         .busy_factor            = 128,                  \
 104         .imbalance_pct          = 133,                  \
 105         .cache_hot_time         = (10*1000000),         \
 106         .cache_nice_tries       = 1,                    \
 107         .busy_idx               = 3,                    \
 108         .idle_idx               = 3,                    \
 109         .newidle_idx            = 0, /* unused */       \
 110         .wake_idx               = 0, /* unused */       \
 111         .forkexec_idx           = 0, /* unused */       \
 112         .per_cpu_gain           = 100,                  \
 113         .flags                  = SD_LOAD_BALANCE,      \
 114         .last_balance           = jiffies,              \
 115         .balance_interval       = 64,                   \
 116         .nr_balance_failed      = 0,                    \
 117 }
 118
 119 #endif /* CONFIG_NUMA */
 120
 121 #include <asm-generic/topology.h>
 122
 123 #endif /* _ASM_IA64_TOPOLOGY_H */