diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 21:05:42 -0400 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 01:55:20 -0400 |
commit | bb8985586b7a906e116db835c64773b7a7d51663 (patch) | |
tree | de93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/topology.h | |
parent | 8ede0bdb63305d3353efd97e9af6210afb05734e (diff) |
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/topology.h')
-rw-r--r-- | arch/x86/include/asm/topology.h | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h new file mode 100644 index 000000000000..7eca9bc022b2 --- /dev/null +++ b/arch/x86/include/asm/topology.h | |||
@@ -0,0 +1,258 @@ | |||
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_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 | |||
38 | /* Node not present */ | ||
39 | #define NUMA_NO_NODE (-1) | ||
40 | |||
41 | #ifdef CONFIG_NUMA | ||
42 | #include <linux/cpumask.h> | ||
43 | #include <asm/mpspec.h> | ||
44 | |||
45 | #ifdef CONFIG_X86_32 | ||
46 | |||
47 | /* Mappings between node number and cpus on that node. */ | ||
48 | extern cpumask_t node_to_cpumask_map[]; | ||
49 | |||
50 | /* Mappings between logical cpu number and node number */ | ||
51 | extern int cpu_to_node_map[]; | ||
52 | |||
53 | /* Returns the number of the node containing CPU 'cpu' */ | ||
54 | static inline int cpu_to_node(int cpu) | ||
55 | { | ||
56 | return cpu_to_node_map[cpu]; | ||
57 | } | ||
58 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) | ||
59 | |||
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 | */ | ||
66 | static inline cpumask_t node_to_cpumask(int node) | ||
67 | { | ||
68 | return node_to_cpumask_map[node]; | ||
69 | } | ||
70 | |||
71 | #else /* CONFIG_X86_64 */ | ||
72 | |||
73 | /* Mappings between node number and cpus on that node. */ | ||
74 | extern cpumask_t *node_to_cpumask_map; | ||
75 | |||
76 | /* Mappings between logical cpu number and node number */ | ||
77 | DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); | ||
78 | |||
79 | /* Returns the number of the current Node. */ | ||
80 | #define numa_node_id() read_pda(nodenumber) | ||
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); | ||
85 | extern const cpumask_t *_node_to_cpumask_ptr(int node); | ||
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' */ | ||
91 | static inline int cpu_to_node(int cpu) | ||
92 | { | ||
93 | return per_cpu(x86_cpu_to_node_map, cpu); | ||
94 | } | ||
95 | |||
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 | } | ||
104 | |||
105 | /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ | ||
106 | static inline const cpumask_t *_node_to_cpumask_ptr(int node) | ||
107 | { | ||
108 | return &node_to_cpumask_map[node]; | ||
109 | } | ||
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 | |||
117 | #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */ | ||
118 | |||
119 | /* Replace default node_to_cpumask_ptr with optimized version */ | ||
120 | #define node_to_cpumask_ptr(v, node) \ | ||
121 | const cpumask_t *v = _node_to_cpumask_ptr(node) | ||
122 | |||
123 | #define node_to_cpumask_ptr_next(v, node) \ | ||
124 | v = _node_to_cpumask_ptr(node) | ||
125 | |||
126 | #endif /* CONFIG_X86_64 */ | ||
127 | |||
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 | |||
134 | #define pcibus_to_node(bus) __pcibus_to_node(bus) | ||
135 | #define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus) | ||
136 | |||
137 | #ifdef CONFIG_X86_32 | ||
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 | |||
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 | |||
148 | #else | ||
149 | |||
150 | # define SD_CACHE_NICE_TRIES 2 | ||
151 | # define SD_IDLE_IDX 2 | ||
152 | # define SD_NEWIDLE_IDX 2 | ||
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) { \ | ||
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, \ | ||
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 | |||
183 | #else /* !CONFIG_NUMA */ | ||
184 | |||
185 | #define numa_node_id() 0 | ||
186 | #define cpu_to_node(cpu) 0 | ||
187 | #define early_cpu_to_node(cpu) 0 | ||
188 | |||
189 | static inline const cpumask_t *_node_to_cpumask_ptr(int node) | ||
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) \ | ||
204 | const cpumask_t *v = _node_to_cpumask_ptr(node) | ||
205 | |||
206 | #define node_to_cpumask_ptr_next(v, node) \ | ||
207 | v = _node_to_cpumask_ptr(node) | ||
208 | #endif | ||
209 | |||
210 | #include <asm-generic/topology.h> | ||
211 | |||
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 | |||
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)) | ||
228 | |||
229 | /* indicates that pointers to the topology cpumask_t maps are valid */ | ||
230 | #define arch_provides_topology_pointers yes | ||
231 | #endif | ||
232 | |||
233 | static inline void arch_fix_phys_package_id(int num, u32 slot) | ||
234 | { | ||
235 | } | ||
236 | |||
237 | struct pci_bus; | ||
238 | void set_pci_bus_resources_arch_default(struct pci_bus *b); | ||
239 | |||
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 | |||
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 | |||
258 | #endif /* ASM_X86__TOPOLOGY_H */ | ||