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 | |
| 28 | #ifdef CONFIG_NUMA |
| 29 | #include <linux/cpumask.h> |
| 30 | #include <asm/mpspec.h> |
| 31 | |
| 32 | /* Mappings between logical cpu number and node number */ |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 33 | #ifdef CONFIG_X86_32 |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 34 | extern int cpu_to_node_map[]; |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 35 | |
| 36 | #else |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 37 | DECLARE_PER_CPU(int, x86_cpu_to_node_map); |
| 38 | extern int x86_cpu_to_node_map_init[]; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 39 | extern void *x86_cpu_to_node_map_early_ptr; |
Mike Travis | 625d6cf | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 40 | /* Returns the number of the current Node. */ |
| 41 | #define numa_node_id() (early_cpu_to_node(raw_smp_processor_id())) |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 42 | #endif |
| 43 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 44 | extern cpumask_t node_to_cpumask_map[]; |
| 45 | |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 46 | #define NUMA_NO_NODE (-1) |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 47 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 48 | /* Returns the number of the node containing CPU 'cpu' */ |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 49 | #ifdef CONFIG_X86_32 |
| 50 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 51 | static inline int cpu_to_node(int cpu) |
| 52 | { |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 53 | return cpu_to_node_map[cpu]; |
| 54 | } |
| 55 | |
| 56 | #else /* CONFIG_X86_64 */ |
| 57 | static inline int early_cpu_to_node(int cpu) |
| 58 | { |
travis@sgi.com | 4323838 | 2008-01-30 13:33:25 +0100 | [diff] [blame] | 59 | int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr; |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 60 | |
| 61 | if (cpu_to_node_map) |
| 62 | return cpu_to_node_map[cpu]; |
| 63 | else if (per_cpu_offset(cpu)) |
| 64 | return per_cpu(x86_cpu_to_node_map, cpu); |
| 65 | else |
| 66 | return NUMA_NO_NODE; |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 67 | } |
| 68 | |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 69 | static inline int cpu_to_node(int cpu) |
| 70 | { |
Ingo Molnar | 5f5cd8f | 2008-01-30 13:33:23 +0100 | [diff] [blame] | 71 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS |
| 72 | if (x86_cpu_to_node_map_early_ptr) { |
travis@sgi.com | c49a495 | 2008-01-30 13:33:22 +0100 | [diff] [blame] | 73 | printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n", |
| 74 | (int)cpu); |
Ingo Molnar | 5f5cd8f | 2008-01-30 13:33:23 +0100 | [diff] [blame] | 75 | dump_stack(); |
| 76 | return ((int *)x86_cpu_to_node_map_early_ptr)[cpu]; |
travis@sgi.com | c49a495 | 2008-01-30 13:33:22 +0100 | [diff] [blame] | 77 | } |
| 78 | #endif |
Ingo Molnar | 5f5cd8f | 2008-01-30 13:33:23 +0100 | [diff] [blame] | 79 | if (per_cpu_offset(cpu)) |
travis@sgi.com | 834beda | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 80 | return per_cpu(x86_cpu_to_node_map, cpu); |
| 81 | else |
| 82 | return NUMA_NO_NODE; |
| 83 | } |
| 84 | #endif /* CONFIG_X86_64 */ |
| 85 | |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 86 | /* |
| 87 | * Returns the number of the node containing Node 'node'. This |
| 88 | * architecture is flat, so it is a pretty simple function! |
| 89 | */ |
| 90 | #define parent_node(node) (node) |
| 91 | |
| 92 | /* Returns a bitmask of CPUs on Node 'node'. */ |
| 93 | static inline cpumask_t node_to_cpumask(int node) |
| 94 | { |
| 95 | return node_to_cpumask_map[node]; |
| 96 | } |
| 97 | |
| 98 | /* Returns the number of the first CPU on Node 'node'. */ |
| 99 | static inline int node_to_first_cpu(int node) |
| 100 | { |
| 101 | cpumask_t mask = node_to_cpumask(node); |
| 102 | |
| 103 | return first_cpu(mask); |
| 104 | } |
| 105 | |
| 106 | #define pcibus_to_node(bus) __pcibus_to_node(bus) |
| 107 | #define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus) |
| 108 | |
Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 109 | #ifdef CONFIG_X86_32 |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 110 | extern unsigned long node_start_pfn[]; |
| 111 | extern unsigned long node_end_pfn[]; |
| 112 | extern unsigned long node_remap_size[]; |
| 113 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) |
| 114 | |
| 115 | # ifdef CONFIG_X86_HT |
| 116 | # define ENABLE_TOPO_DEFINES |
| 117 | # endif |
| 118 | |
| 119 | # define SD_CACHE_NICE_TRIES 1 |
| 120 | # define SD_IDLE_IDX 1 |
| 121 | # define SD_NEWIDLE_IDX 2 |
| 122 | # define SD_FORKEXEC_IDX 0 |
| 123 | |
Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 124 | #else |
Thomas Gleixner | 3367e56 | 2008-01-30 13:30:38 +0100 | [diff] [blame] | 125 | |
| 126 | # ifdef CONFIG_SMP |
| 127 | # define ENABLE_TOPO_DEFINES |
| 128 | # endif |
| 129 | |
| 130 | # define SD_CACHE_NICE_TRIES 2 |
| 131 | # define SD_IDLE_IDX 2 |
| 132 | # define SD_NEWIDLE_IDX 0 |
| 133 | # define SD_FORKEXEC_IDX 1 |
| 134 | |
| 135 | #endif |
| 136 | |
| 137 | /* sched_domains SD_NODE_INIT for NUMAQ machines */ |
| 138 | #define SD_NODE_INIT (struct sched_domain) { \ |
| 139 | .span = CPU_MASK_NONE, \ |
| 140 | .parent = NULL, \ |
| 141 | .child = NULL, \ |
| 142 | .groups = NULL, \ |
| 143 | .min_interval = 8, \ |
| 144 | .max_interval = 32, \ |
| 145 | .busy_factor = 32, \ |
| 146 | .imbalance_pct = 125, \ |
| 147 | .cache_nice_tries = SD_CACHE_NICE_TRIES, \ |
| 148 | .busy_idx = 3, \ |
| 149 | .idle_idx = SD_IDLE_IDX, \ |
| 150 | .newidle_idx = SD_NEWIDLE_IDX, \ |
| 151 | .wake_idx = 1, \ |
| 152 | .forkexec_idx = SD_FORKEXEC_IDX, \ |
| 153 | .flags = SD_LOAD_BALANCE \ |
| 154 | | SD_BALANCE_EXEC \ |
| 155 | | SD_BALANCE_FORK \ |
| 156 | | SD_SERIALIZE \ |
| 157 | | SD_WAKE_BALANCE, \ |
| 158 | .last_balance = jiffies, \ |
| 159 | .balance_interval = 1, \ |
| 160 | .nr_balance_failed = 0, \ |
| 161 | } |
| 162 | |
| 163 | #ifdef CONFIG_X86_64_ACPI_NUMA |
| 164 | extern int __node_distance(int, int); |
| 165 | #define node_distance(a, b) __node_distance(a, b) |
| 166 | #endif |
| 167 | |
| 168 | #else /* CONFIG_NUMA */ |
| 169 | |
| 170 | #include <asm-generic/topology.h> |
| 171 | |
| 172 | #endif |
| 173 | |
| 174 | extern cpumask_t cpu_coregroup_map(int cpu); |
| 175 | |
| 176 | #ifdef ENABLE_TOPO_DEFINES |
| 177 | #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) |
| 178 | #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) |
| 179 | #define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu)) |
| 180 | #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) |
| 181 | #endif |
| 182 | |
| 183 | #ifdef CONFIG_SMP |
| 184 | #define mc_capable() (boot_cpu_data.x86_max_cores > 1) |
| 185 | #define smt_capable() (smp_num_siblings > 1) |
| 186 | #endif |
| 187 | |
Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 188 | #endif |