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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 | */ | |
1965aae3 PA |
25 | #ifndef _ASM_X86_TOPOLOGY_H |
26 | #define _ASM_X86_TOPOLOGY_H | |
3367e56f | 27 | |
5c3a121d VS |
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 | ||
23ca4bba MT |
38 | /* Node not present */ |
39 | #define NUMA_NO_NODE (-1) | |
40 | ||
3367e56f TG |
41 | #ifdef CONFIG_NUMA |
42 | #include <linux/cpumask.h> | |
43 | #include <asm/mpspec.h> | |
44 | ||
834beda1 | 45 | #ifdef CONFIG_X86_32 |
04d1dd20 | 46 | |
23ca4bba MT |
47 | /* Mappings between logical cpu number and node number */ |
48 | extern int cpu_to_node_map[]; | |
df3825c5 | 49 | |
3367e56f TG |
50 | /* Returns the number of the node containing CPU 'cpu' */ |
51 | static inline int cpu_to_node(int cpu) | |
834beda1 | 52 | { |
53 | return cpu_to_node_map[cpu]; | |
54 | } | |
23ca4bba | 55 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) |
834beda1 | 56 | |
57 | #else /* CONFIG_X86_64 */ | |
b447a468 | 58 | |
23ca4bba MT |
59 | /* Mappings between logical cpu number and node number */ |
60 | DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); | |
61 | ||
62 | /* Returns the number of the current Node. */ | |
e7a22c1e BG |
63 | DECLARE_PER_CPU(int, node_number); |
64 | #define numa_node_id() percpu_read(node_number) | |
23ca4bba MT |
65 | |
66 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS | |
67 | extern int cpu_to_node(int cpu); | |
68 | extern int early_cpu_to_node(int cpu); | |
3367e56f | 69 | |
23ca4bba MT |
70 | #else /* !CONFIG_DEBUG_PER_CPU_MAPS */ |
71 | ||
72 | /* Returns the number of the node containing CPU 'cpu' */ | |
834beda1 | 73 | static inline int cpu_to_node(int cpu) |
74 | { | |
b447a468 | 75 | return per_cpu(x86_cpu_to_node_map, cpu); |
834beda1 | 76 | } |
aa6b5446 | 77 | |
23ca4bba MT |
78 | /* Same function but used if called before per_cpu areas are setup */ |
79 | static inline int early_cpu_to_node(int cpu) | |
80 | { | |
f10fcd47 | 81 | return early_per_cpu(x86_cpu_to_node_map, cpu); |
23ca4bba | 82 | } |
834beda1 | 83 | |
71ee73e7 RR |
84 | #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */ |
85 | ||
86 | #endif /* CONFIG_X86_64 */ | |
87 | ||
88 | /* Mappings between node number and cpus on that node. */ | |
c032ef60 | 89 | extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES]; |
71ee73e7 RR |
90 | |
91 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS | |
92 | extern const cpumask_t *cpumask_of_node(int node); | |
93 | #else | |
23ca4bba | 94 | /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ |
c032ef60 | 95 | static inline const struct cpumask *cpumask_of_node(int node) |
23ca4bba | 96 | { |
c032ef60 | 97 | return node_to_cpumask_map[node]; |
23ca4bba | 98 | } |
71ee73e7 | 99 | #endif |
23ca4bba | 100 | |
6470aff6 BG |
101 | extern void setup_node_to_cpumask_map(void); |
102 | ||
23ca4bba MT |
103 | /* |
104 | * Returns the number of the node containing Node 'node'. This | |
105 | * architecture is flat, so it is a pretty simple function! | |
106 | */ | |
107 | #define parent_node(node) (node) | |
108 | ||
3367e56f | 109 | #define pcibus_to_node(bus) __pcibus_to_node(bus) |
3367e56f | 110 | |
96a388de | 111 | #ifdef CONFIG_X86_32 |
3367e56f TG |
112 | extern unsigned long node_start_pfn[]; |
113 | extern unsigned long node_end_pfn[]; | |
114 | extern unsigned long node_remap_size[]; | |
115 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) | |
116 | ||
3367e56f TG |
117 | # define SD_CACHE_NICE_TRIES 1 |
118 | # define SD_IDLE_IDX 1 | |
119 | # define SD_NEWIDLE_IDX 2 | |
120 | # define SD_FORKEXEC_IDX 0 | |
121 | ||
96a388de | 122 | #else |
3367e56f | 123 | |
3367e56f TG |
124 | # define SD_CACHE_NICE_TRIES 2 |
125 | # define SD_IDLE_IDX 2 | |
1d3504fc | 126 | # define SD_NEWIDLE_IDX 2 |
3367e56f TG |
127 | # define SD_FORKEXEC_IDX 1 |
128 | ||
129 | #endif | |
130 | ||
9fcd18c9 | 131 | /* sched_domains SD_NODE_INIT for NUMA machines */ |
3367e56f | 132 | #define SD_NODE_INIT (struct sched_domain) { \ |
3367e56f TG |
133 | .min_interval = 8, \ |
134 | .max_interval = 32, \ | |
135 | .busy_factor = 32, \ | |
136 | .imbalance_pct = 125, \ | |
137 | .cache_nice_tries = SD_CACHE_NICE_TRIES, \ | |
138 | .busy_idx = 3, \ | |
139 | .idle_idx = SD_IDLE_IDX, \ | |
140 | .newidle_idx = SD_NEWIDLE_IDX, \ | |
141 | .wake_idx = 1, \ | |
142 | .forkexec_idx = SD_FORKEXEC_IDX, \ | |
143 | .flags = SD_LOAD_BALANCE \ | |
144 | | SD_BALANCE_EXEC \ | |
145 | | SD_BALANCE_FORK \ | |
9fcd18c9 IM |
146 | | SD_WAKE_AFFINE \ |
147 | | SD_WAKE_BALANCE \ | |
148 | | SD_SERIALIZE, \ | |
3367e56f TG |
149 | .last_balance = jiffies, \ |
150 | .balance_interval = 1, \ | |
3367e56f TG |
151 | } |
152 | ||
153 | #ifdef CONFIG_X86_64_ACPI_NUMA | |
154 | extern int __node_distance(int, int); | |
155 | #define node_distance(a, b) __node_distance(a, b) | |
156 | #endif | |
157 | ||
23ca4bba MT |
158 | #else /* !CONFIG_NUMA */ |
159 | ||
f2a08271 MT |
160 | static inline int numa_node_id(void) |
161 | { | |
162 | return 0; | |
163 | } | |
164 | ||
165 | static inline int cpu_to_node(int cpu) | |
166 | { | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static inline int early_cpu_to_node(int cpu) | |
171 | { | |
172 | return 0; | |
173 | } | |
23ca4bba | 174 | |
393d68fb | 175 | static inline const cpumask_t *cpumask_of_node(int node) |
23ca4bba | 176 | { |
4f062896 | 177 | return cpu_online_mask; |
23ca4bba | 178 | } |
23ca4bba MT |
179 | static inline int node_to_first_cpu(int node) |
180 | { | |
4f062896 | 181 | return cpumask_first(cpu_online_mask); |
23ca4bba MT |
182 | } |
183 | ||
6470aff6 BG |
184 | static inline void setup_node_to_cpumask_map(void) { } |
185 | ||
3367e56f TG |
186 | #endif |
187 | ||
aa6b5446 MT |
188 | #include <asm-generic/topology.h> |
189 | ||
9f248bde MT |
190 | #ifdef CONFIG_NUMA |
191 | /* Returns the number of the first CPU on Node 'node'. */ | |
192 | static inline int node_to_first_cpu(int node) | |
193 | { | |
393d68fb | 194 | return cpumask_first(cpumask_of_node(node)); |
9f248bde MT |
195 | } |
196 | #endif | |
197 | ||
030bb203 | 198 | extern const struct cpumask *cpu_coregroup_mask(int cpu); |
3367e56f TG |
199 | |
200 | #ifdef ENABLE_TOPO_DEFINES | |
201 | #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) | |
202 | #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) | |
7ad728f9 RR |
203 | #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) |
204 | #define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) | |
23ca4bba MT |
205 | |
206 | /* indicates that pointers to the topology cpumask_t maps are valid */ | |
207 | #define arch_provides_topology_pointers yes | |
3367e56f TG |
208 | #endif |
209 | ||
fe086a7b AC |
210 | static inline void arch_fix_phys_package_id(int num, u32 slot) |
211 | { | |
212 | } | |
213 | ||
30a18d6c YL |
214 | struct pci_bus; |
215 | void set_pci_bus_resources_arch_default(struct pci_bus *b); | |
216 | ||
3367e56f | 217 | #ifdef CONFIG_SMP |
7ad728f9 | 218 | #define mc_capable() (cpumask_weight(cpu_core_mask(0)) != nr_cpu_ids) |
3367e56f TG |
219 | #define smt_capable() (smp_num_siblings > 1) |
220 | #endif | |
221 | ||
871d5f8d YL |
222 | #ifdef CONFIG_NUMA |
223 | extern int get_mp_bus_to_node(int busnum); | |
224 | extern void set_mp_bus_to_node(int busnum, int node); | |
225 | #else | |
226 | static inline int get_mp_bus_to_node(int busnum) | |
227 | { | |
228 | return 0; | |
229 | } | |
230 | static inline void set_mp_bus_to_node(int busnum, int node) | |
231 | { | |
232 | } | |
233 | #endif | |
234 | ||
1965aae3 | 235 | #endif /* _ASM_X86_TOPOLOGY_H */ |