1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_S390_TOPOLOGY_H 3 #define _ASM_S390_TOPOLOGY_H 4 5 #include <linux/cpumask.h> 6 #include <asm/numa.h> 7 8 struct sysinfo_15_1_x; 9 struct cpu; 10 11 #ifdef CONFIG_SCHED_TOPOLOGY 12 13 struct cpu_topology_s390 { 14 unsigned short thread_id; 15 unsigned short core_id; 16 unsigned short socket_id; 17 unsigned short book_id; 18 unsigned short drawer_id; 19 unsigned short node_id; 20 cpumask_t thread_mask; 21 cpumask_t core_mask; 22 cpumask_t book_mask; 23 cpumask_t drawer_mask; 24 }; 25 26 extern struct cpu_topology_s390 cpu_topology[NR_CPUS]; 27 extern cpumask_t cpus_with_topology; 28 29 #define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id) 30 #define topology_thread_id(cpu) (cpu_topology[cpu].thread_id) 31 #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_mask) 32 #define topology_core_id(cpu) (cpu_topology[cpu].core_id) 33 #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask) 34 #define topology_book_id(cpu) (cpu_topology[cpu].book_id) 35 #define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask) 36 #define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id) 37 #define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask) 38 39 #define mc_capable() 1 40 41 void topology_init_early(void); 42 int topology_cpu_init(struct cpu *); 43 int topology_set_cpu_management(int fc); 44 void topology_schedule_update(void); 45 void store_topology(struct sysinfo_15_1_x *info); 46 void topology_expect_change(void); 47 const struct cpumask *cpu_coregroup_mask(int cpu); 48 49 #else /* CONFIG_SCHED_TOPOLOGY */ 50 topology_init_early(void)51static inline void topology_init_early(void) { } topology_schedule_update(void)52static inline void topology_schedule_update(void) { } topology_cpu_init(struct cpu * cpu)53static inline int topology_cpu_init(struct cpu *cpu) { return 0; } topology_cpu_dedicated(int cpu_nr)54static inline int topology_cpu_dedicated(int cpu_nr) { return 0; } topology_expect_change(void)55static inline void topology_expect_change(void) { } 56 57 #endif /* CONFIG_SCHED_TOPOLOGY */ 58 59 #define POLARIZATION_UNKNOWN (-1) 60 #define POLARIZATION_HRZ (0) 61 #define POLARIZATION_VL (1) 62 #define POLARIZATION_VM (2) 63 #define POLARIZATION_VH (3) 64 65 #define SD_BOOK_INIT SD_CPU_INIT 66 67 #ifdef CONFIG_NUMA 68 69 #define cpu_to_node cpu_to_node cpu_to_node(int cpu)70static inline int cpu_to_node(int cpu) 71 { 72 return cpu_topology[cpu].node_id; 73 } 74 75 /* Returns a pointer to the cpumask of CPUs on node 'node'. */ 76 #define cpumask_of_node cpumask_of_node cpumask_of_node(int node)77static inline const struct cpumask *cpumask_of_node(int node) 78 { 79 return &node_to_cpumask_map[node]; 80 } 81 82 #define pcibus_to_node(bus) __pcibus_to_node(bus) 83 84 #define node_distance(a, b) __node_distance(a, b) 85 86 #else /* !CONFIG_NUMA */ 87 88 #define numa_node_id numa_node_id numa_node_id(void)89static inline int numa_node_id(void) 90 { 91 return 0; 92 } 93 94 #endif /* CONFIG_NUMA */ 95 96 #include <asm-generic/topology.h> 97 98 #endif /* _ASM_S390_TOPOLOGY_H */ 99