arch/s390/include/asm/topology.h

   1 #ifndef _ASM_S390_TOPOLOGY_H
   2 #define _ASM_S390_TOPOLOGY_H
   3
   4 #include <linux/cpumask.h>
   5
   6 struct sysinfo_15_1_x;
   7 struct cpu;
   8
   9 #ifdef CONFIG_SCHED_BOOK
  10
  11 struct cpu_topology_s390 {
  12         unsigned short core_id;
  13         unsigned short socket_id;
  14         unsigned short book_id;
  15         cpumask_t core_mask;
  16         cpumask_t book_mask;
  17 };
  18
  19 extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
  20
  21 #define topology_physical_package_id(cpu)       (cpu_topology[cpu].socket_id)
  22 #define topology_core_id(cpu)                   (cpu_topology[cpu].core_id)
  23 #define topology_core_cpumask(cpu)              (&cpu_topology[cpu].core_mask)
  24 #define topology_book_id(cpu)                   (cpu_topology[cpu].book_id)
  25 #define topology_book_cpumask(cpu)              (&cpu_topology[cpu].book_mask)
  26
  27 #define mc_capable() 1
  28
  29 static inline const struct cpumask *cpu_coregroup_mask(int cpu)
  30 {
  31         return &cpu_topology[cpu].core_mask;
  32 }
  33
  34 static inline const struct cpumask *cpu_book_mask(int cpu)
  35 {
  36         return &cpu_topology[cpu].book_mask;
  37 }
  38
  39 int topology_cpu_init(struct cpu *);
  40 int topology_set_cpu_management(int fc);
  41 void topology_schedule_update(void);
  42 void store_topology(struct sysinfo_15_1_x *info);
  43 void topology_expect_change(void);
  44
  45 #else /* CONFIG_SCHED_BOOK */
  46
  47 static inline void topology_schedule_update(void) { }
  48 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  49 static inline void topology_expect_change(void) { }
  50
  51 #endif /* CONFIG_SCHED_BOOK */
  52
  53 #define POLARIZATION_UNKNOWN    (-1)
  54 #define POLARIZATION_HRZ        (0)
  55 #define POLARIZATION_VL         (1)
  56 #define POLARIZATION_VM         (2)
  57 #define POLARIZATION_VH         (3)
  58
  59 #ifdef CONFIG_SCHED_BOOK
  60 void s390_init_cpu_topology(void);
  61 #else
  62 static inline void s390_init_cpu_topology(void)
  63 {
  64 };
  65 #endif
  66
  67 #define SD_BOOK_INIT    SD_CPU_INIT
  68
  69 #include <asm-generic/topology.h>
  70
  71 #endif /* _ASM_S390_TOPOLOGY_H */