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 /*
29 * to preserve the visibility of NUMA_NO_NODE definition,
30 * moved to there from here. May be used independent of
31 * CONFIG_NUMA.
32 */
33 #include <linux/numa.h>
34 #include <linux/cpumask.h>
35
36 #ifdef CONFIG_NUMA
37
38 #include <asm/mpspec.h>
39 #include <asm/percpu.h>
40
41 /* Mappings between logical cpu number and node number */
42 DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
43
44 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
45 /*
46 * override generic percpu implementation of cpu_to_node
47 */
48 extern int __cpu_to_node(int cpu);
49 #define cpu_to_node __cpu_to_node
50
51 extern int early_cpu_to_node(int cpu);
52
53 #else /* !CONFIG_DEBUG_PER_CPU_MAPS */
54
55 /* Same function but used if called before per_cpu areas are setup */
early_cpu_to_node(int cpu)56 static inline int early_cpu_to_node(int cpu)
57 {
58 return early_per_cpu(x86_cpu_to_node_map, cpu);
59 }
60
61 #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */
62
63 /* Mappings between node number and cpus on that node. */
64 extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
65
66 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
67 extern const struct cpumask *cpumask_of_node(int node);
68 #else
69 /* Returns a pointer to the cpumask of CPUs on Node 'node'. */
cpumask_of_node(int node)70 static inline const struct cpumask *cpumask_of_node(int node)
71 {
72 return node_to_cpumask_map[node];
73 }
74 #endif
75
76 extern void setup_node_to_cpumask_map(void);
77
78 #define pcibus_to_node(bus) __pcibus_to_node(bus)
79
80 extern int __node_distance(int, int);
81 #define node_distance(a, b) __node_distance(a, b)
82
83 #else /* !CONFIG_NUMA */
84
numa_node_id(void)85 static inline int numa_node_id(void)
86 {
87 return 0;
88 }
89 /*
90 * indicate override:
91 */
92 #define numa_node_id numa_node_id
93
early_cpu_to_node(int cpu)94 static inline int early_cpu_to_node(int cpu)
95 {
96 return 0;
97 }
98
setup_node_to_cpumask_map(void)99 static inline void setup_node_to_cpumask_map(void) { }
100
101 #endif
102
103 #include <asm-generic/topology.h>
104
105 extern const struct cpumask *cpu_coregroup_mask(int cpu);
106 extern const struct cpumask *cpu_clustergroup_mask(int cpu);
107
108 #define topology_logical_package_id(cpu) (cpu_data(cpu).logical_proc_id)
109 #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
110 #define topology_logical_die_id(cpu) (cpu_data(cpu).logical_die_id)
111 #define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id)
112 #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
113 #define topology_ppin(cpu) (cpu_data(cpu).ppin)
114
115 extern unsigned int __max_die_per_package;
116
117 #ifdef CONFIG_SMP
118 #define topology_cluster_id(cpu) (per_cpu(cpu_l2c_id, cpu))
119 #define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu))
120 #define topology_cluster_cpumask(cpu) (cpu_clustergroup_mask(cpu))
121 #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
122 #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
123
124 extern unsigned int __max_logical_packages;
125 #define topology_max_packages() (__max_logical_packages)
126
topology_max_die_per_package(void)127 static inline int topology_max_die_per_package(void)
128 {
129 return __max_die_per_package;
130 }
131
132 extern int __max_smt_threads;
133
topology_max_smt_threads(void)134 static inline int topology_max_smt_threads(void)
135 {
136 return __max_smt_threads;
137 }
138
139 #include <linux/cpu_smt.h>
140
141 int topology_update_package_map(unsigned int apicid, unsigned int cpu);
142 int topology_update_die_map(unsigned int dieid, unsigned int cpu);
143 int topology_phys_to_logical_pkg(unsigned int pkg);
144
145 extern struct cpumask __cpu_primary_thread_mask;
146 #define cpu_primary_thread_mask ((const struct cpumask *)&__cpu_primary_thread_mask)
147
148 /**
149 * topology_is_primary_thread - Check whether CPU is the primary SMT thread
150 * @cpu: CPU to check
151 */
topology_is_primary_thread(unsigned int cpu)152 static inline bool topology_is_primary_thread(unsigned int cpu)
153 {
154 return cpumask_test_cpu(cpu, cpu_primary_thread_mask);
155 }
156 #else /* CONFIG_SMP */
157 #define topology_max_packages() (1)
158 static inline int
topology_update_package_map(unsigned int apicid,unsigned int cpu)159 topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; }
160 static inline int
topology_update_die_map(unsigned int dieid,unsigned int cpu)161 topology_update_die_map(unsigned int dieid, unsigned int cpu) { return 0; }
topology_phys_to_logical_pkg(unsigned int pkg)162 static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; }
topology_max_die_per_package(void)163 static inline int topology_max_die_per_package(void) { return 1; }
topology_max_smt_threads(void)164 static inline int topology_max_smt_threads(void) { return 1; }
topology_is_primary_thread(unsigned int cpu)165 static inline bool topology_is_primary_thread(unsigned int cpu) { return true; }
166 #endif /* !CONFIG_SMP */
167
arch_fix_phys_package_id(int num,u32 slot)168 static inline void arch_fix_phys_package_id(int num, u32 slot)
169 {
170 }
171
172 struct pci_bus;
173 int x86_pci_root_bus_node(int bus);
174 void x86_pci_root_bus_resources(int bus, struct list_head *resources);
175
176 extern bool x86_topology_update;
177
178 #ifdef CONFIG_SCHED_MC_PRIO
179 #include <asm/percpu.h>
180
181 DECLARE_PER_CPU_READ_MOSTLY(int, sched_core_priority);
182 extern unsigned int __read_mostly sysctl_sched_itmt_enabled;
183
184 /* Interface to set priority of a cpu */
185 void sched_set_itmt_core_prio(int prio, int core_cpu);
186
187 /* Interface to notify scheduler that system supports ITMT */
188 int sched_set_itmt_support(void);
189
190 /* Interface to notify scheduler that system revokes ITMT support */
191 void sched_clear_itmt_support(void);
192
193 #else /* CONFIG_SCHED_MC_PRIO */
194
195 #define sysctl_sched_itmt_enabled 0
sched_set_itmt_core_prio(int prio,int core_cpu)196 static inline void sched_set_itmt_core_prio(int prio, int core_cpu)
197 {
198 }
sched_set_itmt_support(void)199 static inline int sched_set_itmt_support(void)
200 {
201 return 0;
202 }
sched_clear_itmt_support(void)203 static inline void sched_clear_itmt_support(void)
204 {
205 }
206 #endif /* CONFIG_SCHED_MC_PRIO */
207
208 #if defined(CONFIG_SMP) && defined(CONFIG_X86_64)
209 #include <asm/cpufeature.h>
210
211 DECLARE_STATIC_KEY_FALSE(arch_scale_freq_key);
212
213 #define arch_scale_freq_invariant() static_branch_likely(&arch_scale_freq_key)
214
215 DECLARE_PER_CPU(unsigned long, arch_freq_scale);
216
arch_scale_freq_capacity(int cpu)217 static inline long arch_scale_freq_capacity(int cpu)
218 {
219 return per_cpu(arch_freq_scale, cpu);
220 }
221 #define arch_scale_freq_capacity arch_scale_freq_capacity
222
223 extern void arch_set_max_freq_ratio(bool turbo_disabled);
224 extern void freq_invariance_set_perf_ratio(u64 ratio, bool turbo_disabled);
225 #else
arch_set_max_freq_ratio(bool turbo_disabled)226 static inline void arch_set_max_freq_ratio(bool turbo_disabled) { }
freq_invariance_set_perf_ratio(u64 ratio,bool turbo_disabled)227 static inline void freq_invariance_set_perf_ratio(u64 ratio, bool turbo_disabled) { }
228 #endif
229
230 extern void arch_scale_freq_tick(void);
231 #define arch_scale_freq_tick arch_scale_freq_tick
232
233 #ifdef CONFIG_ACPI_CPPC_LIB
234 void init_freq_invariance_cppc(void);
235 #define arch_init_invariance_cppc init_freq_invariance_cppc
236 #endif
237
238 #endif /* _ASM_X86_TOPOLOGY_H */
239