/*
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* Written by: Matthew Dobson, IBM Corporation
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*
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* Copyright (C) 2002, IBM Corp.
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <colpatch@us.ibm.com>
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*/
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#ifndef _ASM_X86_TOPOLOGY_H
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#define _ASM_X86_TOPOLOGY_H
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/*
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* to preserve the visibility of NUMA_NO_NODE definition,
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* moved to there from here. May be used independent of
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* CONFIG_NUMA.
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*/
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#include <linux/numa.h>
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#ifdef CONFIG_NUMA
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/percpu.h>
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/* Mappings between logical cpu number and node number */
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DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
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#ifdef CONFIG_DEBUG_PER_CPU_MAPS
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/*
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* override generic percpu implementation of cpu_to_node
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*/
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extern int __cpu_to_node(int cpu);
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#define cpu_to_node __cpu_to_node
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extern int early_cpu_to_node(int cpu);
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#else /* !CONFIG_DEBUG_PER_CPU_MAPS */
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/* Same function but used if called before per_cpu areas are setup */
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static inline int early_cpu_to_node(int cpu)
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{
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return early_per_cpu(x86_cpu_to_node_map, cpu);
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}
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#endif /* !CONFIG_DEBUG_PER_CPU_MAPS */
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/* Mappings between node number and cpus on that node. */
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extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
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#ifdef CONFIG_DEBUG_PER_CPU_MAPS
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extern const struct cpumask *cpumask_of_node(int node);
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#else
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/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
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static inline const struct cpumask *cpumask_of_node(int node)
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{
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return node_to_cpumask_map[node];
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}
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#endif
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extern void setup_node_to_cpumask_map(void);
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#define pcibus_to_node(bus) __pcibus_to_node(bus)
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extern int __node_distance(int, int);
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#define node_distance(a, b) __node_distance(a, b)
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#else /* !CONFIG_NUMA */
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static inline int numa_node_id(void)
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{
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return 0;
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}
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/*
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* indicate override:
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*/
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#define numa_node_id numa_node_id
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static inline int early_cpu_to_node(int cpu)
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{
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return 0;
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}
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static inline void setup_node_to_cpumask_map(void) { }
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#endif
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#include <asm-generic/topology.h>
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extern const struct cpumask *cpu_coregroup_mask(int cpu);
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#define topology_logical_package_id(cpu) (cpu_data(cpu).logical_proc_id)
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#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
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#define topology_logical_die_id(cpu) (cpu_data(cpu).logical_die_id)
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#define topology_die_id(cpu) (cpu_data(cpu).cpu_die_id)
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#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
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extern unsigned int __max_die_per_package;
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#ifdef CONFIG_SMP
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#define topology_die_cpumask(cpu) (per_cpu(cpu_die_map, cpu))
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#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
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#define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
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extern unsigned int __max_logical_packages;
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#define topology_max_packages() (__max_logical_packages)
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static inline int topology_max_die_per_package(void)
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{
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return __max_die_per_package;
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}
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extern int __max_smt_threads;
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static inline int topology_max_smt_threads(void)
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{
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return __max_smt_threads;
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}
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int topology_update_package_map(unsigned int apicid, unsigned int cpu);
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int topology_update_die_map(unsigned int dieid, unsigned int cpu);
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int topology_phys_to_logical_pkg(unsigned int pkg);
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int topology_phys_to_logical_die(unsigned int die, unsigned int cpu);
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bool topology_is_primary_thread(unsigned int cpu);
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bool topology_smt_supported(void);
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#else
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#define topology_max_packages() (1)
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static inline int
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topology_update_package_map(unsigned int apicid, unsigned int cpu) { return 0; }
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static inline int
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topology_update_die_map(unsigned int dieid, unsigned int cpu) { return 0; }
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static inline int topology_phys_to_logical_pkg(unsigned int pkg) { return 0; }
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static inline int topology_phys_to_logical_die(unsigned int die,
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unsigned int cpu) { return 0; }
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static inline int topology_max_die_per_package(void) { return 1; }
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static inline int topology_max_smt_threads(void) { return 1; }
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static inline bool topology_is_primary_thread(unsigned int cpu) { return true; }
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static inline bool topology_smt_supported(void) { return false; }
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#endif
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static inline void arch_fix_phys_package_id(int num, u32 slot)
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{
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}
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struct pci_bus;
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int x86_pci_root_bus_node(int bus);
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void x86_pci_root_bus_resources(int bus, struct list_head *resources);
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extern bool x86_topology_update;
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#ifdef CONFIG_SCHED_MC_PRIO
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#include <asm/percpu.h>
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DECLARE_PER_CPU_READ_MOSTLY(int, sched_core_priority);
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extern unsigned int __read_mostly sysctl_sched_itmt_enabled;
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/* Interface to set priority of a cpu */
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void sched_set_itmt_core_prio(int prio, int core_cpu);
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/* Interface to notify scheduler that system supports ITMT */
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int sched_set_itmt_support(void);
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/* Interface to notify scheduler that system revokes ITMT support */
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void sched_clear_itmt_support(void);
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#else /* CONFIG_SCHED_MC_PRIO */
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#define sysctl_sched_itmt_enabled 0
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static inline void sched_set_itmt_core_prio(int prio, int core_cpu)
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{
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}
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static inline int sched_set_itmt_support(void)
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{
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return 0;
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}
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static inline void sched_clear_itmt_support(void)
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{
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}
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#endif /* CONFIG_SCHED_MC_PRIO */
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#if defined(CONFIG_SMP) && defined(CONFIG_X86_64)
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#include <asm/cpufeature.h>
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DECLARE_STATIC_KEY_FALSE(arch_scale_freq_key);
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#define arch_scale_freq_invariant() static_branch_likely(&arch_scale_freq_key)
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DECLARE_PER_CPU(unsigned long, arch_freq_scale);
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static inline long arch_scale_freq_capacity(int cpu)
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{
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return per_cpu(arch_freq_scale, cpu);
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}
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#define arch_scale_freq_capacity arch_scale_freq_capacity
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extern void arch_scale_freq_tick(void);
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#define arch_scale_freq_tick arch_scale_freq_tick
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extern void arch_set_max_freq_ratio(bool turbo_disabled);
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#else
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static inline void arch_set_max_freq_ratio(bool turbo_disabled)
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{
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}
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#endif
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#endif /* _ASM_X86_TOPOLOGY_H */
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