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_TOPOLOGY
  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 drawer_id;
  18         unsigned short node_id;
  19         cpumask_t thread_mask;
  20         cpumask_t core_mask;
  21         cpumask_t book_mask;
  22         cpumask_t drawer_mask;
  23 };
  24
  25 DECLARE_PER_CPU(struct cpu_topology_s390, cpu_topology);
  26
  27 #define topology_physical_package_id(cpu) (per_cpu(cpu_topology, cpu).socket_id)
  28 #define topology_thread_id(cpu)           (per_cpu(cpu_topology, cpu).thread_id)
  29 #define topology_sibling_cpumask(cpu) \
  30                 (&per_cpu(cpu_topology, cpu).thread_mask)
  31 #define topology_core_id(cpu)             (per_cpu(cpu_topology, cpu).core_id)
  32 #define topology_core_cpumask(cpu)        (&per_cpu(cpu_topology, cpu).core_mask)
  33 #define topology_book_id(cpu)             (per_cpu(cpu_topology, cpu).book_id)
  34 #define topology_book_cpumask(cpu)        (&per_cpu(cpu_topology, cpu).book_mask)
  35 #define topology_drawer_id(cpu)           (per_cpu(cpu_topology, cpu).drawer_id)
  36 #define topology_drawer_cpumask(cpu)      (&per_cpu(cpu_topology, cpu).drawer_mask)
  37
  38 #define mc_capable() 1
  39
  40 int topology_cpu_init(struct cpu *);
  41 int topology_set_cpu_management(int fc);
  42 void topology_schedule_update(void);
  43 void store_topology(struct sysinfo_15_1_x *info);
  44 void topology_expect_change(void);
  45 const struct cpumask *cpu_coregroup_mask(int cpu);
  46
  47 #else /* CONFIG_SCHED_TOPOLOGY */
  48
  49 static inline void topology_schedule_update(void) { }
  50 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  51 static inline void topology_expect_change(void) { }
  52
  53 #endif /* CONFIG_SCHED_TOPOLOGY */
  54
  55 #define POLARIZATION_UNKNOWN    (-1)
  56 #define POLARIZATION_HRZ        (0)
  57 #define POLARIZATION_VL         (1)
  58 #define POLARIZATION_VM         (2)
  59 #define POLARIZATION_VH         (3)
  60
  61 #define SD_BOOK_INIT    SD_CPU_INIT
  62
  63 #ifdef CONFIG_NUMA
  64
  65 #define cpu_to_node cpu_to_node
  66 static inline int cpu_to_node(int cpu)
  67 {
  68         return per_cpu(cpu_topology, cpu).node_id;
  69 }
  70
  71 /* Returns a pointer to the cpumask of CPUs on node 'node'. */
  72 #define cpumask_of_node cpumask_of_node
  73 static inline const struct cpumask *cpumask_of_node(int node)
  74 {
  75         return &node_to_cpumask_map[node];
  76 }
  77
  78 /*
  79  * Returns the number of the node containing node 'node'. This
  80  * architecture is flat, so it is a pretty simple function!
  81  */
  82 #define parent_node(node) (node)
  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 */