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 the number of the node containing CPU 'cpu' 30 */ 31 #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu]) 32 33 /* 34 * Returns a bitmask of CPUs on Node 'node'. 35 */ 36 #define node_to_cpumask(node) (node_to_cpu_mask[node]) 37 #define cpumask_of_node(node) (&node_to_cpu_mask[node]) 38 39 /* 40 * Returns the number of the node containing Node 'nid'. 41 * Not implemented here. Multi-level hierarchies detected with 42 * the help of node_distance(). 43 */ 44 #define parent_node(nid) (nid) 45 46 /* 47 * Returns the number of the first CPU on Node 'node'. 48 */ 49 #define node_to_first_cpu(node) (cpumask_first(cpumask_of_node(node))) 50 51 /* 52 * Determines the node for a given pci bus 53 */ 54 #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node 55 56 void build_cpu_to_node_map(void); 57 58 #define SD_CPU_INIT (struct sched_domain) { \ 59 .parent = NULL, \ 60 .child = NULL, \ 61 .groups = NULL, \ 62 .min_interval = 1, \ 63 .max_interval = 4, \ 64 .busy_factor = 64, \ 65 .imbalance_pct = 125, \ 66 .cache_nice_tries = 2, \ 67 .busy_idx = 2, \ 68 .idle_idx = 1, \ 69 .newidle_idx = 2, \ 70 .wake_idx = 1, \ 71 .forkexec_idx = 1, \ 72 .flags = SD_LOAD_BALANCE \ 73 | SD_BALANCE_NEWIDLE \ 74 | SD_BALANCE_EXEC \ 75 | SD_WAKE_AFFINE, \ 76 .last_balance = jiffies, \ 77 .balance_interval = 1, \ 78 .nr_balance_failed = 0, \ 79 } 80 81 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */ 82 #define SD_NODE_INIT (struct sched_domain) { \ 83 .parent = NULL, \ 84 .child = NULL, \ 85 .groups = NULL, \ 86 .min_interval = 8, \ 87 .max_interval = 8*(min(num_online_cpus(), 32U)), \ 88 .busy_factor = 64, \ 89 .imbalance_pct = 125, \ 90 .cache_nice_tries = 2, \ 91 .busy_idx = 3, \ 92 .idle_idx = 2, \ 93 .newidle_idx = 2, \ 94 .wake_idx = 1, \ 95 .forkexec_idx = 1, \ 96 .flags = SD_LOAD_BALANCE \ 97 | SD_BALANCE_EXEC \ 98 | SD_BALANCE_FORK \ 99 | SD_SERIALIZE \ 100 | SD_WAKE_BALANCE, \ 101 .last_balance = jiffies, \ 102 .balance_interval = 64, \ 103 .nr_balance_failed = 0, \ 104 } 105 106 #endif /* CONFIG_NUMA */ 107 108 #ifdef CONFIG_SMP 109 #define topology_physical_package_id(cpu) (cpu_data(cpu)->socket_id) 110 #define topology_core_id(cpu) (cpu_data(cpu)->core_id) 111 #define topology_core_siblings(cpu) (cpu_core_map[cpu]) 112 #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) 113 #define topology_core_cpumask(cpu) (&cpu_core_map[cpu]) 114 #define topology_thread_cpumask(cpu) (&per_cpu(cpu_sibling_map, cpu)) 115 #define smt_capable() (smp_num_siblings > 1) 116 #endif 117 118 extern void arch_fix_phys_package_id(int num, u32 slot); 119 120 #define pcibus_to_cpumask(bus) (pcibus_to_node(bus) == -1 ? \ 121 CPU_MASK_ALL : \ 122 node_to_cpumask(pcibus_to_node(bus)) \ 123 ) 124 125 #define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \ 126 cpu_all_mask : \ 127 cpumask_of_node(pcibus_to_node(bus))) 128 129 #include <asm-generic/topology.h> 130 131 #endif /* _ASM_IA64_TOPOLOGY_H */ 132