~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/x86/include/asm/topology.h

Version: ~ [ linux-5.16-rc3 ] ~ [ linux-5.15.5 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.82 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.162 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.218 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.256 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.291 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.293 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 
 35 #ifdef CONFIG_NUMA
 36 #include <linux/cpumask.h>
 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 */
 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'. */
 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 
 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 
 94 static inline int early_cpu_to_node(int cpu)
 95 {
 96         return 0;
 97 }
 98 
 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 
107 #define topology_logical_package_id(cpu)        (cpu_data(cpu).logical_proc_id)
108 #define topology_physical_package_id(cpu)       (cpu_data(cpu).phys_proc_id)
109 #define topology_logical_die_id(cpu)            (cpu_data(cpu).logical_die_id)
110 #define topology_die_id(cpu)                    (cpu_data(cpu).cpu_die_id)
111 #define topology_core_id(cpu)                   (cpu_data(cpu).cpu_core_id)
112 
113 extern unsigned int __max_die_per_package;
114 
115 #ifdef CONFIG_SMP
116 #define topology_die_cpumask(cpu)               (per_cpu(cpu_die_map, cpu))
117 #define topology_core_cpumask(cpu)              (per_cpu(cpu_core_map, cpu))
118 #define topology_sibling_cpumask(cpu)           (per_cpu(cpu_sibling_map, cpu))
119 
120 extern unsigned int __max_logical_packages;
121 #define topology_max_packages()                 (__max_logical_packages)
122 
123 static inline int topology_max_die_per_package(void)
124 {
125         return __max_die_per_package;
126 }
127 
128 extern int __max_smt_threads;
129 
130 static inline int topology_max_smt_threads(void)
131 {
132         return __max_smt_threads;
133 }
134 
135 int topology_update_package_map(unsigned int apicid, unsigned int cpu);
136 int topology_update_die_map(unsigned int dieid, unsigned int cpu);
137 int topology_phys_to_logical_pkg(unsigned int pkg);
138 int topology_phys_to_logical_die(unsigned int die, unsigned int cpu);
139 bool topology_is_primary_thread(unsigned int cpu);
140 bool topology_smt_supported(void);
141 #else
142 #define topology_max_packages()                 (1)
143 static inline int
144 topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; }
145 static inline int
146 topology_update_die_map(unsigned int dieid, unsigned int cpu) { return 0; }
147 static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; }
148 static inline int topology_phys_to_logical_die(unsigned int die,
149                 unsigned int cpu) { return 0; }
150 static inline int topology_max_die_per_package(void) { return 1; }
151 static inline int topology_max_smt_threads(void) { return 1; }
152 static inline bool topology_is_primary_thread(unsigned int cpu) { return true; }
153 static inline bool topology_smt_supported(void) { return false; }
154 #endif
155 
156 static inline void arch_fix_phys_package_id(int num, u32 slot)
157 {
158 }
159 
160 struct pci_bus;
161 int x86_pci_root_bus_node(int bus);
162 void x86_pci_root_bus_resources(int bus, struct list_head *resources);
163 
164 extern bool x86_topology_update;
165 
166 #ifdef CONFIG_SCHED_MC_PRIO
167 #include <asm/percpu.h>
168 
169 DECLARE_PER_CPU_READ_MOSTLY(int, sched_core_priority);
170 extern unsigned int __read_mostly sysctl_sched_itmt_enabled;
171 
172 /* Interface to set priority of a cpu */
173 void sched_set_itmt_core_prio(int prio, int core_cpu);
174 
175 /* Interface to notify scheduler that system supports ITMT */
176 int sched_set_itmt_support(void);
177 
178 /* Interface to notify scheduler that system revokes ITMT support */
179 void sched_clear_itmt_support(void);
180 
181 #else /* CONFIG_SCHED_MC_PRIO */
182 
183 #define sysctl_sched_itmt_enabled       0
184 static inline void sched_set_itmt_core_prio(int prio, int core_cpu)
185 {
186 }
187 static inline int sched_set_itmt_support(void)
188 {
189         return 0;
190 }
191 static inline void sched_clear_itmt_support(void)
192 {
193 }
194 #endif /* CONFIG_SCHED_MC_PRIO */
195 
196 #if defined(CONFIG_SMP) && defined(CONFIG_X86_64)
197 #include <asm/cpufeature.h>
198 
199 DECLARE_STATIC_KEY_FALSE(arch_scale_freq_key);
200 
201 #define arch_scale_freq_invariant() static_branch_likely(&arch_scale_freq_key)
202 
203 DECLARE_PER_CPU(unsigned long, arch_freq_scale);
204 
205 static inline long arch_scale_freq_capacity(int cpu)
206 {
207         return per_cpu(arch_freq_scale, cpu);
208 }
209 #define arch_scale_freq_capacity arch_scale_freq_capacity
210 
211 extern void arch_scale_freq_tick(void);
212 #define arch_scale_freq_tick arch_scale_freq_tick
213 
214 extern void arch_set_max_freq_ratio(bool turbo_disabled);
215 #else
216 static inline void arch_set_max_freq_ratio(bool turbo_disabled)
217 {
218 }
219 #endif
220 
221 #ifdef CONFIG_ACPI_CPPC_LIB
222 void init_freq_invariance_cppc(void);
223 #define init_freq_invariance_cppc init_freq_invariance_cppc
224 #endif
225 
226 #endif /* _ASM_X86_TOPOLOGY_H */
227 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp