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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 | */ | |
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 GOC |
40 | DECLARE_PER_CPU(int, x86_cpu_to_node_map); |
41 | extern int x86_cpu_to_node_map_init[]; | |
42 | extern void *x86_cpu_to_node_map_early_ptr; | |
43 | ||
3367e56f TG |
44 | extern cpumask_t node_to_cpumask_map[]; |
45 | ||
43238382 | 46 | #define NUMA_NO_NODE (-1) |
df3825c5 | 47 | |
3367e56f | 48 | /* Returns the number of the node containing CPU 'cpu' */ |
834beda1 | 49 | #ifdef CONFIG_X86_32 |
50 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) | |
3367e56f | 51 | static inline int cpu_to_node(int cpu) |
834beda1 | 52 | { |
53 | return cpu_to_node_map[cpu]; | |
54 | } | |
55 | ||
56 | #else /* CONFIG_X86_64 */ | |
57 | static inline int early_cpu_to_node(int cpu) | |
3367e56f | 58 | { |
43238382 | 59 | int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr; |
df3825c5 | 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; | |
3367e56f TG |
67 | } |
68 | ||
834beda1 | 69 | static inline int cpu_to_node(int cpu) |
70 | { | |
5f5cd8fd IM |
71 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS |
72 | if (x86_cpu_to_node_map_early_ptr) { | |
c49a4955 | 73 | printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n", |
5d7d03b8 | 74 | (int)cpu); |
5f5cd8fd IM |
75 | dump_stack(); |
76 | return ((int *)x86_cpu_to_node_map_early_ptr)[cpu]; | |
c49a4955 | 77 | } |
78 | #endif | |
5f5cd8fd | 79 | if (per_cpu_offset(cpu)) |
834beda1 | 80 | return per_cpu(x86_cpu_to_node_map, cpu); |
81 | else | |
82 | return NUMA_NO_NODE; | |
83 | } | |
84 | #endif /* CONFIG_X86_64 */ | |
85 | ||
3367e56f TG |
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 | ||
96a388de | 109 | #ifdef CONFIG_X86_32 |
3367e56f TG |
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 | ||
96a388de | 124 | #else |
3367e56f TG |
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 | ||
96a388de | 188 | #endif |