arch/ia64/include/asm/topology.h

   1 /*
   2  * Copyright (C) 2002, Erich Focht, NEC
   3  *
   4  * All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11 #ifndef _ASM_IA64_TOPOLOGY_H
  12 #define _ASM_IA64_TOPOLOGY_H
  13
  14 #include <asm/acpi.h>
  15 #include <asm/numa.h>
  16 #include <asm/smp.h>
  17
  18 #ifdef CONFIG_NUMA
  19
  20 /* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */
  21 #define PENALTY_FOR_NODE_WITH_CPUS 255
  22
  23 /*
  24  * Distance above which we begin to use zone reclaim
  25  */
  26 #define RECLAIM_DISTANCE 15
  27
  28 /*
  29  * Returns a bitmask of CPUs on Node 'node'.
  30  */
  31 #define cpumask_of_node(node) ((node) == -1 ?                           \
  32                                cpu_all_mask :                           \
  33                                &node_to_cpu_mask[node])
  34
  35 /*
  36  * Returns the number of the node containing Node 'nid'.
  37  * Not implemented here. Multi-level hierarchies detected with
  38  * the help of node_distance().
  39  */
  40 #define parent_node(nid) (nid)
  41
  42 /*
  43  * Determines the node for a given pci bus
  44  */
  45 #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
  46
  47 void build_cpu_to_node_map(void);
  48
  49 #define SD_CPU_INIT (struct sched_domain) {             \
  50         .parent                 = NULL,                 \
  51         .child                  = NULL,                 \
  52         .groups                 = NULL,                 \
  53         .min_interval           = 1,                    \
  54         .max_interval           = 4,                    \
  55         .busy_factor            = 64,                   \
  56         .imbalance_pct          = 125,                  \
  57         .cache_nice_tries       = 2,                    \
  58         .busy_idx               = 2,                    \
  59         .idle_idx               = 1,                    \
  60         .newidle_idx            = 0,                    \
  61         .wake_idx               = 0,                    \
  62         .forkexec_idx           = 0,                    \
  63         .flags                  = SD_LOAD_BALANCE       \
  64                                 | SD_BALANCE_NEWIDLE    \
  65                                 | SD_BALANCE_EXEC       \
  66                                 | SD_BALANCE_FORK       \
  67                                 | SD_WAKE_AFFINE,       \
  68         .last_balance           = jiffies,              \
  69         .balance_interval       = 1,                    \
  70         .nr_balance_failed      = 0,                    \
  71 }
  72
  73 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
  74 #define SD_NODE_INIT (struct sched_domain) {            \
  75         .parent                 = NULL,                 \
  76         .child                  = NULL,                 \
  77         .groups                 = NULL,                 \
  78         .min_interval           = 8,                    \
  79         .max_interval           = 8*(min(num_online_cpus(), 32U)), \
  80         .busy_factor            = 64,                   \
  81         .imbalance_pct          = 125,                  \
  82         .cache_nice_tries       = 2,                    \
  83         .busy_idx               = 3,                    \
  84         .idle_idx               = 2,                    \
  85         .newidle_idx            = 0,                    \
  86         .wake_idx               = 0,                    \
  87         .forkexec_idx           = 0,                    \
  88         .flags                  = SD_LOAD_BALANCE       \
  89                                 | SD_BALANCE_NEWIDLE    \
  90                                 | SD_BALANCE_EXEC       \
  91                                 | SD_BALANCE_FORK       \
  92                                 | SD_SERIALIZE,         \
  93         .last_balance           = jiffies,              \
  94         .balance_interval       = 64,                   \
  95         .nr_balance_failed      = 0,                    \
  96 }
  97
  98 #endif /* CONFIG_NUMA */
  99
 100 #ifdef CONFIG_SMP
 101 #define topology_physical_package_id(cpu)       (cpu_data(cpu)->socket_id)
 102 #define topology_core_id(cpu)                   (cpu_data(cpu)->core_id)
 103 #define topology_core_cpumask(cpu)              (&cpu_core_map[cpu])
 104 #define topology_thread_cpumask(cpu)            (&per_cpu(cpu_sibling_map, cpu))
 105 #define smt_capable()                           (smp_num_siblings > 1)
 106 #endif
 107
 108 extern void arch_fix_phys_package_id(int num, u32 slot);
 109
 110 #define cpumask_of_pcibus(bus)  (pcibus_to_node(bus) == -1 ?            \
 111                                  cpu_all_mask :                         \
 112                                  cpumask_of_node(pcibus_to_node(bus)))
 113
 114 #include <asm-generic/topology.h>
 115
 116 #endif /* _ASM_IA64_TOPOLOGY_H */