]>
Commit | Line | Data |
---|---|---|
3367e56f TG |
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 */ | |
834beda1 | 33 | #ifdef CONFIG_X86_32 |
43238382 | 34 | extern int cpu_to_node_map[]; |
834beda1 | 35 | #else |
625d6cff MT |
36 | /* Returns the number of the current Node. */ |
37 | #define numa_node_id() (early_cpu_to_node(raw_smp_processor_id())) | |
834beda1 | 38 | #endif |
39 | ||
04d1dd20 | 40 | DECLARE_PER_CPU(int, x86_cpu_to_node_map); |
b447a468 MT |
41 | |
42 | #ifdef CONFIG_SMP | |
04d1dd20 GOC |
43 | extern int x86_cpu_to_node_map_init[]; |
44 | extern void *x86_cpu_to_node_map_early_ptr; | |
b447a468 MT |
45 | #else |
46 | #define x86_cpu_to_node_map_early_ptr NULL | |
47 | #endif | |
04d1dd20 | 48 | |
3367e56f TG |
49 | extern cpumask_t node_to_cpumask_map[]; |
50 | ||
43238382 | 51 | #define NUMA_NO_NODE (-1) |
df3825c5 | 52 | |
3367e56f | 53 | /* Returns the number of the node containing CPU 'cpu' */ |
834beda1 | 54 | #ifdef CONFIG_X86_32 |
55 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) | |
3367e56f | 56 | static inline int cpu_to_node(int cpu) |
834beda1 | 57 | { |
58 | return cpu_to_node_map[cpu]; | |
59 | } | |
60 | ||
61 | #else /* CONFIG_X86_64 */ | |
b447a468 MT |
62 | |
63 | #ifdef CONFIG_SMP | |
834beda1 | 64 | static inline int early_cpu_to_node(int cpu) |
3367e56f | 65 | { |
43238382 | 66 | int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr; |
df3825c5 | 67 | |
68 | if (cpu_to_node_map) | |
69 | return cpu_to_node_map[cpu]; | |
70 | else if (per_cpu_offset(cpu)) | |
71 | return per_cpu(x86_cpu_to_node_map, cpu); | |
72 | else | |
73 | return NUMA_NO_NODE; | |
3367e56f | 74 | } |
b447a468 MT |
75 | #else |
76 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) | |
77 | #endif | |
3367e56f | 78 | |
834beda1 | 79 | static inline int cpu_to_node(int cpu) |
80 | { | |
5f5cd8fd IM |
81 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS |
82 | if (x86_cpu_to_node_map_early_ptr) { | |
c49a4955 | 83 | printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n", |
5d7d03b8 | 84 | (int)cpu); |
5f5cd8fd IM |
85 | dump_stack(); |
86 | return ((int *)x86_cpu_to_node_map_early_ptr)[cpu]; | |
c49a4955 | 87 | } |
88 | #endif | |
b447a468 | 89 | return per_cpu(x86_cpu_to_node_map, cpu); |
834beda1 | 90 | } |
aa6b5446 MT |
91 | |
92 | #ifdef CONFIG_NUMA | |
93 | ||
94 | /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ | |
95 | #define node_to_cpumask_ptr(v, node) \ | |
96 | cpumask_t *v = &(node_to_cpumask_map[node]) | |
97 | ||
98 | #define node_to_cpumask_ptr_next(v, node) \ | |
99 | v = &(node_to_cpumask_map[node]) | |
100 | #endif | |
101 | ||
834beda1 | 102 | #endif /* CONFIG_X86_64 */ |
103 | ||
3367e56f TG |
104 | /* |
105 | * Returns the number of the node containing Node 'node'. This | |
106 | * architecture is flat, so it is a pretty simple function! | |
107 | */ | |
108 | #define parent_node(node) (node) | |
109 | ||
110 | /* Returns a bitmask of CPUs on Node 'node'. */ | |
111 | static inline cpumask_t node_to_cpumask(int node) | |
112 | { | |
113 | return node_to_cpumask_map[node]; | |
114 | } | |
115 | ||
116 | /* Returns the number of the first CPU on Node 'node'. */ | |
117 | static inline int node_to_first_cpu(int node) | |
118 | { | |
119 | cpumask_t mask = node_to_cpumask(node); | |
120 | ||
121 | return first_cpu(mask); | |
122 | } | |
123 | ||
124 | #define pcibus_to_node(bus) __pcibus_to_node(bus) | |
125 | #define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus) | |
126 | ||
96a388de | 127 | #ifdef CONFIG_X86_32 |
3367e56f TG |
128 | extern unsigned long node_start_pfn[]; |
129 | extern unsigned long node_end_pfn[]; | |
130 | extern unsigned long node_remap_size[]; | |
131 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) | |
132 | ||
133 | # ifdef CONFIG_X86_HT | |
134 | # define ENABLE_TOPO_DEFINES | |
135 | # endif | |
136 | ||
137 | # define SD_CACHE_NICE_TRIES 1 | |
138 | # define SD_IDLE_IDX 1 | |
139 | # define SD_NEWIDLE_IDX 2 | |
140 | # define SD_FORKEXEC_IDX 0 | |
141 | ||
96a388de | 142 | #else |
3367e56f TG |
143 | |
144 | # ifdef CONFIG_SMP | |
145 | # define ENABLE_TOPO_DEFINES | |
146 | # endif | |
147 | ||
148 | # define SD_CACHE_NICE_TRIES 2 | |
149 | # define SD_IDLE_IDX 2 | |
1d3504fc | 150 | # define SD_NEWIDLE_IDX 2 |
3367e56f TG |
151 | # define SD_FORKEXEC_IDX 1 |
152 | ||
153 | #endif | |
154 | ||
155 | /* sched_domains SD_NODE_INIT for NUMAQ machines */ | |
156 | #define SD_NODE_INIT (struct sched_domain) { \ | |
3367e56f TG |
157 | .min_interval = 8, \ |
158 | .max_interval = 32, \ | |
159 | .busy_factor = 32, \ | |
160 | .imbalance_pct = 125, \ | |
161 | .cache_nice_tries = SD_CACHE_NICE_TRIES, \ | |
162 | .busy_idx = 3, \ | |
163 | .idle_idx = SD_IDLE_IDX, \ | |
164 | .newidle_idx = SD_NEWIDLE_IDX, \ | |
165 | .wake_idx = 1, \ | |
166 | .forkexec_idx = SD_FORKEXEC_IDX, \ | |
167 | .flags = SD_LOAD_BALANCE \ | |
168 | | SD_BALANCE_EXEC \ | |
169 | | SD_BALANCE_FORK \ | |
170 | | SD_SERIALIZE \ | |
171 | | SD_WAKE_BALANCE, \ | |
172 | .last_balance = jiffies, \ | |
173 | .balance_interval = 1, \ | |
3367e56f TG |
174 | } |
175 | ||
176 | #ifdef CONFIG_X86_64_ACPI_NUMA | |
177 | extern int __node_distance(int, int); | |
178 | #define node_distance(a, b) __node_distance(a, b) | |
179 | #endif | |
180 | ||
181 | #else /* CONFIG_NUMA */ | |
182 | ||
3367e56f TG |
183 | #endif |
184 | ||
aa6b5446 MT |
185 | #include <asm-generic/topology.h> |
186 | ||
3367e56f TG |
187 | extern cpumask_t cpu_coregroup_map(int cpu); |
188 | ||
189 | #ifdef ENABLE_TOPO_DEFINES | |
190 | #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) | |
191 | #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) | |
192 | #define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu)) | |
193 | #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) | |
194 | #endif | |
195 | ||
196 | #ifdef CONFIG_SMP | |
197 | #define mc_capable() (boot_cpu_data.x86_max_cores > 1) | |
198 | #define smt_capable() (smp_num_siblings > 1) | |
199 | #endif | |
200 | ||
871d5f8d YL |
201 | #ifdef CONFIG_NUMA |
202 | extern int get_mp_bus_to_node(int busnum); | |
203 | extern void set_mp_bus_to_node(int busnum, int node); | |
204 | #else | |
205 | static inline int get_mp_bus_to_node(int busnum) | |
206 | { | |
207 | return 0; | |
208 | } | |
209 | static inline void set_mp_bus_to_node(int busnum, int node) | |
210 | { | |
211 | } | |
212 | #endif | |
213 | ||
96a388de | 214 | #endif |