arch/s390/include/asm/topology.h

   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 */