LXR linux/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
   7struct sysinfo_15_1_x;
   8struct cpu;
   9
  10#ifdef CONFIG_SCHED_TOPOLOGY
  11
  12struct 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
  23DECLARE_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
  36int topology_cpu_init(struct cpu *);
  37int topology_set_cpu_management(int fc);
  38void topology_schedule_update(void);
  39void store_topology(struct sysinfo_15_1_x *info);
  40void topology_expect_change(void);
  41const struct cpumask *cpu_coregroup_mask(int cpu);
  42
  43#else /* CONFIG_SCHED_TOPOLOGY */
  44
  45static inline void topology_schedule_update(void) { }
  46static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  47static inline void topology_expect_change(void) { }
  48
  49#endif /* CONFIG_SCHED_TOPOLOGY */
  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
  62static 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
  69static 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
  87static 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 */
  97