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 #include <asm/sysinfo.h>
   6
   7 struct cpu;
   8
   9 #ifdef CONFIG_SCHED_BOOK
  10
  11 extern unsigned char cpu_core_id[NR_CPUS];
  12 extern cpumask_t cpu_core_map[NR_CPUS];
  13
  14 static inline const struct cpumask *cpu_coregroup_mask(int cpu)
  15 {
  16         return &cpu_core_map[cpu];
  17 }
  18
  19 #define topology_core_id(cpu)           (cpu_core_id[cpu])
  20 #define topology_core_cpumask(cpu)      (&cpu_core_map[cpu])
  21 #define mc_capable()                    (1)
  22
  23 extern unsigned char cpu_book_id[NR_CPUS];
  24 extern cpumask_t cpu_book_map[NR_CPUS];
  25
  26 static inline const struct cpumask *cpu_book_mask(int cpu)
  27 {
  28         return &cpu_book_map[cpu];
  29 }
  30
  31 #define topology_book_id(cpu)           (cpu_book_id[cpu])
  32 #define topology_book_cpumask(cpu)      (&cpu_book_map[cpu])
  33
  34 int topology_cpu_init(struct cpu *);
  35 int topology_set_cpu_management(int fc);
  36 void topology_schedule_update(void);
  37 void store_topology(struct sysinfo_15_1_x *info);
  38 void topology_expect_change(void);
  39
  40 #else /* CONFIG_SCHED_BOOK */
  41
  42 static inline void topology_schedule_update(void) { }
  43 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  44 static inline void topology_expect_change(void) { }
  45
  46 #endif /* CONFIG_SCHED_BOOK */
  47
  48 #define POLARIZATION_UNKNOWN    (-1)
  49 #define POLARIZATION_HRZ        (0)
  50 #define POLARIZATION_VL         (1)
  51 #define POLARIZATION_VM         (2)
  52 #define POLARIZATION_VH         (3)
  53
  54 extern int cpu_polarization[];
  55
  56 static inline void cpu_set_polarization(int cpu, int val)
  57 {
  58 #ifdef CONFIG_SCHED_BOOK
  59         cpu_polarization[cpu] = val;
  60 #endif
  61 }
  62
  63 static inline int cpu_read_polarization(int cpu)
  64 {
  65 #ifdef CONFIG_SCHED_BOOK
  66         return cpu_polarization[cpu];
  67 #else
  68         return POLARIZATION_HRZ;
  69 #endif
  70 }
  71
  72 #ifdef CONFIG_SCHED_BOOK
  73 void s390_init_cpu_topology(void);
  74 #else
  75 static inline void s390_init_cpu_topology(void)
  76 {
  77 };
  78 #endif
  79
  80 #define SD_BOOK_INIT    SD_CPU_INIT
  81
  82 #include <asm-generic/topology.h>
  83
  84 #endif /* _ASM_S390_TOPOLOGY_H */