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 dedicated : 1; 20 int booted_cores; 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 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 #define topology_cpu_dedicated(cpu) (cpu_topology[cpu].dedicated) 39 #define topology_booted_cores(cpu) (cpu_topology[cpu].booted_cores) 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 update_cpu_masks(void); 49 void topology_expect_change(void); 50 const struct cpumask *cpu_coregroup_mask(int cpu); 51 52 #else /* CONFIG_SCHED_TOPOLOGY */ 53 54 static inline void topology_init_early(void) { } 55 static inline void topology_schedule_update(void) { } 56 static inline int topology_cpu_init(struct cpu *cpu) { return 0; } 57 static inline int topology_cpu_dedicated(int cpu_nr) { return 0; } 58 static inline int topology_booted_cores(int cpu_nr) { return 1; } 59 static inline void update_cpu_masks(void) { } 60 static inline void topology_expect_change(void) { } 61 62 #endif /* CONFIG_SCHED_TOPOLOGY */ 63 64 #define POLARIZATION_UNKNOWN (-1) 65 #define POLARIZATION_HRZ (0) 66 #define POLARIZATION_VL (1) 67 #define POLARIZATION_VM (2) 68 #define POLARIZATION_VH (3) 69 70 #define SD_BOOK_INIT SD_CPU_INIT 71 72 #ifdef CONFIG_NUMA 73 74 #define cpu_to_node cpu_to_node 75 static inline int cpu_to_node(int cpu) 76 { 77 return 0; 78 } 79 80 /* Returns a pointer to the cpumask of CPUs on node 'node'. */ 81 #define cpumask_of_node cpumask_of_node 82 static inline const struct cpumask *cpumask_of_node(int node) 83 { 84 return cpu_possible_mask; 85 } 86 87 #define pcibus_to_node(bus) __pcibus_to_node(bus) 88 89 #else /* !CONFIG_NUMA */ 90 91 #define numa_node_id numa_node_id 92 static inline int numa_node_id(void) 93 { 94 return 0; 95 } 96 97 #endif /* CONFIG_NUMA */ 98 99 #include <asm-generic/topology.h> 100 101 #endif /* _ASM_S390_TOPOLOGY_H */ 102