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 51 static inline void topology_init_early(void) { } 52 static inline void topology_schedule_update(void) { } 53 static inline int topology_cpu_init(struct cpu *cpu) { return 0; } 54 static inline void topology_expect_change(void) { } 55 56 #endif /* CONFIG_SCHED_TOPOLOGY */ 57 58 #define POLARIZATION_UNKNOWN (-1) 59 #define POLARIZATION_HRZ (0) 60 #define POLARIZATION_VL (1) 61 #define POLARIZATION_VM (2) 62 #define POLARIZATION_VH (3) 63 64 #define SD_BOOK_INIT SD_CPU_INIT 65 66 #ifdef CONFIG_NUMA 67 68 #define cpu_to_node cpu_to_node 69 static inline int cpu_to_node(int cpu) 70 { 71 return cpu_topology[cpu].node_id; 72 } 73 74 /* Returns a pointer to the cpumask of CPUs on node 'node'. */ 75 #define cpumask_of_node cpumask_of_node 76 static inline const struct cpumask *cpumask_of_node(int node) 77 { 78 return &node_to_cpumask_map[node]; 79 } 80 81 #define pcibus_to_node(bus) __pcibus_to_node(bus) 82 83 #define node_distance(a, b) __node_distance(a, b) 84 85 #else /* !CONFIG_NUMA */ 86 87 #define numa_node_id numa_node_id 88 static inline int numa_node_id(void) 89 { 90 return 0; 91 } 92 93 #endif /* CONFIG_NUMA */ 94 95 #include <asm-generic/topology.h> 96 97 #endif /* _ASM_S390_TOPOLOGY_H */ 98