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 unsigned short dedicated : 1; 21 cpumask_t thread_mask; 22 cpumask_t core_mask; 23 cpumask_t book_mask; 24 cpumask_t drawer_mask; 25 }; 26 27 extern struct cpu_topology_s390 cpu_topology[NR_CPUS]; 28 extern cpumask_t cpus_with_topology; 29 30 #define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id) 31 #define topology_thread_id(cpu) (cpu_topology[cpu].thread_id) 32 #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_mask) 33 #define topology_core_id(cpu) (cpu_topology[cpu].core_id) 34 #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_mask) 35 #define topology_book_id(cpu) (cpu_topology[cpu].book_id) 36 #define topology_book_cpumask(cpu) (&cpu_topology[cpu].book_mask) 37 #define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id) 38 #define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask) 39 #define topology_cpu_dedicated(cpu) (cpu_topology[cpu].dedicated) 40 41 #define mc_capable() 1 42 43 void topology_init_early(void); 44 int topology_cpu_init(struct cpu *); 45 int topology_set_cpu_management(int fc); 46 void topology_schedule_update(void); 47 void store_topology(struct sysinfo_15_1_x *info); 48 void topology_expect_change(void); 49 const struct cpumask *cpu_coregroup_mask(int cpu); 50 51 #else /* CONFIG_SCHED_TOPOLOGY */ 52 53 static inline void topology_init_early(void) { } 54 static inline void topology_schedule_update(void) { } 55 static inline int topology_cpu_init(struct cpu *cpu) { return 0; } 56 static inline int topology_cpu_dedicated(int cpu_nr) { return 0; } 57 static inline void topology_expect_change(void) { } 58 59 #endif /* CONFIG_SCHED_TOPOLOGY */ 60 61 #define POLARIZATION_UNKNOWN (-1) 62 #define POLARIZATION_HRZ (0) 63 #define POLARIZATION_VL (1) 64 #define POLARIZATION_VM (2) 65 #define POLARIZATION_VH (3) 66 67 #define SD_BOOK_INIT SD_CPU_INIT 68 69 #ifdef CONFIG_NUMA 70 71 #define cpu_to_node cpu_to_node 72 static inline int cpu_to_node(int cpu) 73 { 74 return cpu_topology[cpu].node_id; 75 } 76 77 /* Returns a pointer to the cpumask of CPUs on node 'node'. */ 78 #define cpumask_of_node cpumask_of_node 79 static inline const struct cpumask *cpumask_of_node(int node) 80 { 81 return &node_to_cpumask_map[node]; 82 } 83 84 #define pcibus_to_node(bus) __pcibus_to_node(bus) 85 86 #define node_distance(a, b) __node_distance(a, b) 87 88 #else /* !CONFIG_NUMA */ 89 90 #define numa_node_id numa_node_id 91 static inline int numa_node_id(void) 92 { 93 return 0; 94 } 95 96 #endif /* CONFIG_NUMA */ 97 98 #include <asm-generic/topology.h> 99 100 #endif /* _ASM_S390_TOPOLOGY_H */ 101