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/numa.h>
   6
   7 struct sysinfo_15_1_x;
   8 struct cpu;
   9
  10 #ifdef CONFIG_SCHED_BOOK
  11
  12 struct cpu_topology_s390 {
  13         unsigned short thread_id;
  14         unsigned short core_id;
  15         unsigned short socket_id;
  16         unsigned short book_id;
  17         unsigned short node_id;
  18         cpumask_t thread_mask;
  19         cpumask_t core_mask;
  20         cpumask_t book_mask;
  21 };
  22
  23 DECLARE_PER_CPU(struct cpu_topology_s390, cpu_topology);
  24
  25 #define topology_physical_package_id(cpu) (per_cpu(cpu_topology, cpu).socket_id)
  26 #define topology_thread_id(cpu)           (per_cpu(cpu_topology, cpu).thread_id)
  27 #define topology_sibling_cpumask(cpu) \
  28                 (&per_cpu(cpu_topology, cpu).thread_mask)
  29 #define topology_core_id(cpu)             (per_cpu(cpu_topology, cpu).core_id)
  30 #define topology_core_cpumask(cpu)        (&per_cpu(cpu_topology, cpu).core_mask)
  31 #define topology_book_id(cpu)             (per_cpu(cpu_topology, cpu).book_id)
  32 #define topology_book_cpumask(cpu)        (&per_cpu(cpu_topology, cpu).book_mask)
  33
  34 #define mc_capable() 1
  35
  36 int topology_cpu_init(struct cpu *);
  37 int topology_set_cpu_management(int fc);
  38 void topology_schedule_update(void);
  39 void store_topology(struct sysinfo_15_1_x *info);
  40 void topology_expect_change(void);
  41 const struct cpumask *cpu_coregroup_mask(int cpu);
  42
  43 #else /* CONFIG_SCHED_BOOK */
  44
  45 static inline void topology_schedule_update(void) { }
  46 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  47 static inline void topology_expect_change(void) { }
  48
  49 #endif /* CONFIG_SCHED_BOOK */
  50
  51 #define POLARIZATION_UNKNOWN    (-1)
  52 #define POLARIZATION_HRZ        (0)
  53 #define POLARIZATION_VL         (1)
  54 #define POLARIZATION_VM         (2)
  55 #define POLARIZATION_VH         (3)
  56
  57 #define SD_BOOK_INIT    SD_CPU_INIT
  58
  59 #ifdef CONFIG_NUMA
  60
  61 #define cpu_to_node cpu_to_node
  62 static inline int cpu_to_node(int cpu)
  63 {
  64         return per_cpu(cpu_topology, cpu).node_id;
  65 }
  66
  67 /* Returns a pointer to the cpumask of CPUs on node 'node'. */
  68 #define cpumask_of_node cpumask_of_node
  69 static inline const struct cpumask *cpumask_of_node(int node)
  70 {
  71         return node_to_cpumask_map[node];
  72 }
  73
  74 /*
  75  * Returns the number of the node containing node 'node'. This
  76  * architecture is flat, so it is a pretty simple function!
  77  */
  78 #define parent_node(node) (node)
  79
  80 #define pcibus_to_node(bus) __pcibus_to_node(bus)
  81
  82 #define node_distance(a, b) __node_distance(a, b)
  83
  84 #else /* !CONFIG_NUMA */
  85
  86 #define numa_node_id numa_node_id
  87 static inline int numa_node_id(void)
  88 {
  89         return 0;
  90 }
  91
  92 #endif /* CONFIG_NUMA */
  93
  94 #include <asm-generic/topology.h>
  95
  96 #endif /* _ASM_S390_TOPOLOGY_H */