Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Written by: Matthew Dobson, IBM Corporation |
| 3 | * |
| 4 | * Copyright (C) 2002, IBM Corp. |
| 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 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 16 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 17 | * details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | * |
| 23 | * Send feedback to <colpatch@us.ibm.com> |
| 24 | */ |
| 25 | #ifndef _ASM_X86_TOPOLOGY_H |
| 26 | #define _ASM_X86_TOPOLOGY_H |
| 27 | |
Vaidyanathan Srinivasan | 5c3a121 | 2008-05-05 19:22:15 +0530 | [diff] [blame] | 28 | #ifdef CONFIG_X86_32 |
| 29 | # ifdef CONFIG_X86_HT |
| 30 | # define ENABLE_TOPO_DEFINES |
| 31 | # endif |
| 32 | #else |
| 33 | # ifdef CONFIG_SMP |
| 34 | # define ENABLE_TOPO_DEFINES |
| 35 | # endif |
| 36 | #endif |
| 37 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 38 | /* Node not present */ |
| 39 | #define NUMA_NO_NODE (-1) |
| 40 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 41 | #ifdef CONFIG_NUMA |
| 42 | #include <linux/cpumask.h> |
| 43 | #include <asm/mpspec.h> |
| 44 | |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 45 | #ifdef CONFIG_X86_32 |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 46 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 47 | /* Mappings between node number and cpus on that node. */ |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 48 | extern cpumask_t node_to_cpumask_map[]; |
| 49 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 50 | /* Mappings between logical cpu number and node number */ |
| 51 | extern int cpu_to_node_map[]; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 52 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 53 | /* Returns the number of the node containing CPU 'cpu' */ |
| 54 | static inline int cpu_to_node(int cpu) |
| 55 | { |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 56 | return cpu_to_node_map[cpu]; |
| 57 | } |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 58 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 59 | |
Mike Travis | 6a2f47c | 2008-06-27 10:10:13 -0700 | [diff] [blame] | 60 | /* Returns a bitmask of CPUs on Node 'node'. |
| 61 | * |
| 62 | * Side note: this function creates the returned cpumask on the stack |
| 63 | * so with a high NR_CPUS count, excessive stack space is used. The |
| 64 | * node_to_cpumask_ptr function should be used whenever possible. |
| 65 | */ |
Mike Travis | 9f248bd | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 66 | static inline cpumask_t node_to_cpumask(int node) |
| 67 | { |
| 68 | return node_to_cpumask_map[node]; |
| 69 | } |
| 70 | |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 71 | #else /* CONFIG_X86_64 */ |
Mike Travis | b447a46 | 2008-03-25 15:06:51 -0700 | [diff] [blame] | 72 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 73 | /* Mappings between node number and cpus on that node. */ |
Mike Travis | 9f248bd | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 74 | extern cpumask_t *node_to_cpumask_map; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 75 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 76 | /* Mappings between logical cpu number and node number */ |
| 77 | DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 78 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 79 | /* Returns the number of the current Node. */ |
Mike Travis | 7891a24 | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 80 | #define numa_node_id() read_pda(nodenumber) |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 81 | |
| 82 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS |
| 83 | extern int cpu_to_node(int cpu); |
| 84 | extern int early_cpu_to_node(int cpu); |
Mike Travis | 11369f35 | 2008-07-08 14:35:21 -0700 | [diff] [blame] | 85 | extern const cpumask_t *_node_to_cpumask_ptr(int node); |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 86 | extern cpumask_t node_to_cpumask(int node); |
| 87 | |
| 88 | #else /* !CONFIG_DEBUG_PER_CPU_MAPS */ |
| 89 | |
| 90 | /* Returns the number of the node containing CPU 'cpu' */ |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 91 | static inline int cpu_to_node(int cpu) |
| 92 | { |
Mike Travis | b447a46 | 2008-03-25 15:06:51 -0700 | [diff] [blame] | 93 | return per_cpu(x86_cpu_to_node_map, cpu); |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 94 | } |
Mike Travis | aa6b544 | 2008-03-31 08:41:55 -0700 | [diff] [blame] | 95 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 96 | /* Same function but used if called before per_cpu areas are setup */ |
| 97 | static inline int early_cpu_to_node(int cpu) |
| 98 | { |
| 99 | if (early_per_cpu_ptr(x86_cpu_to_node_map)) |
| 100 | return early_per_cpu_ptr(x86_cpu_to_node_map)[cpu]; |
| 101 | |
| 102 | return per_cpu(x86_cpu_to_node_map, cpu); |
| 103 | } |
Mike Travis | aa6b544 | 2008-03-31 08:41:55 -0700 | [diff] [blame] | 104 | |
| 105 | /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ |
Mike Travis | 11369f35 | 2008-07-08 14:35:21 -0700 | [diff] [blame] | 106 | static inline const cpumask_t *_node_to_cpumask_ptr(int node) |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 107 | { |
| 108 | return &node_to_cpumask_map[node]; |
| 109 | } |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 110 | |
| 111 | /* Returns a bitmask of CPUs on Node 'node'. */ |
| 112 | static inline cpumask_t node_to_cpumask(int node) |
| 113 | { |
| 114 | return node_to_cpumask_map[node]; |
| 115 | } |
| 116 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 117 | #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */ |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 118 | |
| 119 | /* Replace default node_to_cpumask_ptr with optimized version */ |
| 120 | #define node_to_cpumask_ptr(v, node) \ |
Mike Travis | 11369f35 | 2008-07-08 14:35:21 -0700 | [diff] [blame] | 121 | const cpumask_t *v = _node_to_cpumask_ptr(node) |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 122 | |
| 123 | #define node_to_cpumask_ptr_next(v, node) \ |
| 124 | v = _node_to_cpumask_ptr(node) |
| 125 | |
Mike Travis | 9f248bd | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 126 | #endif /* CONFIG_X86_64 */ |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 127 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 128 | /* |
| 129 | * Returns the number of the node containing Node 'node'. This |
| 130 | * architecture is flat, so it is a pretty simple function! |
| 131 | */ |
| 132 | #define parent_node(node) (node) |
| 133 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 134 | #define pcibus_to_node(bus) __pcibus_to_node(bus) |
| 135 | #define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus) |
| 136 | |
Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 137 | #ifdef CONFIG_X86_32 |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 138 | extern unsigned long node_start_pfn[]; |
| 139 | extern unsigned long node_end_pfn[]; |
| 140 | extern unsigned long node_remap_size[]; |
| 141 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) |
| 142 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 143 | # define SD_CACHE_NICE_TRIES 1 |
| 144 | # define SD_IDLE_IDX 1 |
| 145 | # define SD_NEWIDLE_IDX 2 |
| 146 | # define SD_FORKEXEC_IDX 0 |
| 147 | |
Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 148 | #else |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 149 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 150 | # define SD_CACHE_NICE_TRIES 2 |
| 151 | # define SD_IDLE_IDX 2 |
Hidetoshi Seto | 1d3504f | 2008-04-15 14:04:23 +0900 | [diff] [blame] | 152 | # define SD_NEWIDLE_IDX 2 |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 153 | # define SD_FORKEXEC_IDX 1 |
| 154 | |
| 155 | #endif |
| 156 | |
| 157 | /* sched_domains SD_NODE_INIT for NUMAQ machines */ |
| 158 | #define SD_NODE_INIT (struct sched_domain) { \ |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 159 | .min_interval = 8, \ |
| 160 | .max_interval = 32, \ |
| 161 | .busy_factor = 32, \ |
| 162 | .imbalance_pct = 125, \ |
| 163 | .cache_nice_tries = SD_CACHE_NICE_TRIES, \ |
| 164 | .busy_idx = 3, \ |
| 165 | .idle_idx = SD_IDLE_IDX, \ |
| 166 | .newidle_idx = SD_NEWIDLE_IDX, \ |
| 167 | .wake_idx = 1, \ |
| 168 | .forkexec_idx = SD_FORKEXEC_IDX, \ |
| 169 | .flags = SD_LOAD_BALANCE \ |
| 170 | | SD_BALANCE_EXEC \ |
| 171 | | SD_BALANCE_FORK \ |
| 172 | | SD_SERIALIZE \ |
| 173 | | SD_WAKE_BALANCE, \ |
| 174 | .last_balance = jiffies, \ |
| 175 | .balance_interval = 1, \ |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | #ifdef CONFIG_X86_64_ACPI_NUMA |
| 179 | extern int __node_distance(int, int); |
| 180 | #define node_distance(a, b) __node_distance(a, b) |
| 181 | #endif |
| 182 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 183 | #else /* !CONFIG_NUMA */ |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 184 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 185 | #define numa_node_id() 0 |
| 186 | #define cpu_to_node(cpu) 0 |
| 187 | #define early_cpu_to_node(cpu) 0 |
| 188 | |
Mike Travis | 11369f35 | 2008-07-08 14:35:21 -0700 | [diff] [blame] | 189 | static inline const cpumask_t *_node_to_cpumask_ptr(int node) |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 190 | { |
| 191 | return &cpu_online_map; |
| 192 | } |
| 193 | static inline cpumask_t node_to_cpumask(int node) |
| 194 | { |
| 195 | return cpu_online_map; |
| 196 | } |
| 197 | static inline int node_to_first_cpu(int node) |
| 198 | { |
| 199 | return first_cpu(cpu_online_map); |
| 200 | } |
| 201 | |
| 202 | /* Replace default node_to_cpumask_ptr with optimized version */ |
| 203 | #define node_to_cpumask_ptr(v, node) \ |
Mike Travis | 11369f35 | 2008-07-08 14:35:21 -0700 | [diff] [blame] | 204 | const cpumask_t *v = _node_to_cpumask_ptr(node) |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 205 | |
| 206 | #define node_to_cpumask_ptr_next(v, node) \ |
| 207 | v = _node_to_cpumask_ptr(node) |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 208 | #endif |
| 209 | |
Mike Travis | aa6b544 | 2008-03-31 08:41:55 -0700 | [diff] [blame] | 210 | #include <asm-generic/topology.h> |
| 211 | |
Mike Travis | 9f248bd | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 212 | #ifdef CONFIG_NUMA |
| 213 | /* Returns the number of the first CPU on Node 'node'. */ |
| 214 | static inline int node_to_first_cpu(int node) |
| 215 | { |
| 216 | node_to_cpumask_ptr(mask, node); |
| 217 | return first_cpu(*mask); |
| 218 | } |
| 219 | #endif |
| 220 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 221 | extern cpumask_t cpu_coregroup_map(int cpu); |
| 222 | |
| 223 | #ifdef ENABLE_TOPO_DEFINES |
| 224 | #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) |
| 225 | #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) |
| 226 | #define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu)) |
| 227 | #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 228 | |
| 229 | /* indicates that pointers to the topology cpumask_t maps are valid */ |
| 230 | #define arch_provides_topology_pointers yes |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 231 | #endif |
| 232 | |
Alex Chiang | fe086a7 | 2008-04-29 15:05:29 -0700 | [diff] [blame] | 233 | static inline void arch_fix_phys_package_id(int num, u32 slot) |
| 234 | { |
| 235 | } |
| 236 | |
Yinghai Lu | 30a18d6 | 2008-02-19 03:21:20 -0800 | [diff] [blame] | 237 | struct pci_bus; |
| 238 | void set_pci_bus_resources_arch_default(struct pci_bus *b); |
| 239 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 240 | #ifdef CONFIG_SMP |
| 241 | #define mc_capable() (boot_cpu_data.x86_max_cores > 1) |
| 242 | #define smt_capable() (smp_num_siblings > 1) |
| 243 | #endif |
| 244 | |
Yinghai Lu | 871d5f8 | 2008-02-19 03:20:09 -0800 | [diff] [blame] | 245 | #ifdef CONFIG_NUMA |
| 246 | extern int get_mp_bus_to_node(int busnum); |
| 247 | extern void set_mp_bus_to_node(int busnum, int node); |
| 248 | #else |
| 249 | static inline int get_mp_bus_to_node(int busnum) |
| 250 | { |
| 251 | return 0; |
| 252 | } |
| 253 | static inline void set_mp_bus_to_node(int busnum, int node) |
| 254 | { |
| 255 | } |
| 256 | #endif |
| 257 | |
Mike Travis | 23ca4bb | 2008-05-12 21:21:12 +0200 | [diff] [blame] | 258 | #endif /* _ASM_X86_TOPOLOGY_H */ |