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 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
  25extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
  26extern cpumask_t cpus_with_topology;
  27
  28#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
  29#define topology_thread_id(cpu)           (cpu_topology[cpu].thread_id)
  30#define topology_sibling_cpumask(cpu)     (&cpu_topology[cpu].thread_mask)
  31#define topology_core_id(cpu)             (cpu_topology[cpu].core_id)
  32#define topology_core_cpumask(cpu)        (&cpu_topology[cpu].core_mask)
  33#define topology_book_id(cpu)             (cpu_topology[cpu].book_id)
  34#define topology_book_cpumask(cpu)        (&cpu_topology[cpu].book_mask)
  35#define topology_drawer_id(cpu)           (cpu_topology[cpu].drawer_id)
  36#define topology_drawer_cpumask(cpu)      (&cpu_topology[cpu].drawer_mask)
  37
  38#define mc_capable() 1
  39
  40void topology_init_early(void);
  41int topology_cpu_init(struct cpu *);
  42int topology_set_cpu_management(int fc);
  43void topology_schedule_update(void);
  44void store_topology(struct sysinfo_15_1_x *info);
  45void topology_expect_change(void);
  46const struct cpumask *cpu_coregroup_mask(int cpu);
  47
  48#else /* CONFIG_SCHED_TOPOLOGY */
  49
  50static inline void topology_init_early(void) { }
  51static inline void topology_schedule_update(void) { }
  52static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  53static inline void topology_expect_change(void) { }
  54
  55#endif /* CONFIG_SCHED_TOPOLOGY */
  56
  57#define POLARIZATION_UNKNOWN    (-1)
  58#define POLARIZATION_HRZ        (0)
  59#define POLARIZATION_VL         (1)
  60#define POLARIZATION_VM         (2)
  61#define POLARIZATION_VH         (3)
  62
  63#define SD_BOOK_INIT    SD_CPU_INIT
  64
  65#ifdef CONFIG_NUMA
  66
  67#define cpu_to_node cpu_to_node
  68static inline int cpu_to_node(int cpu)
  69{
  70        return cpu_topology[cpu].node_id;
  71}
  72
  73/* Returns a pointer to the cpumask of CPUs on node 'node'. */
  74#define cpumask_of_node cpumask_of_node
  75static inline const struct cpumask *cpumask_of_node(int node)
  76{
  77        return &node_to_cpumask_map[node];
  78}
  79
  80/*
  81 * Returns the number of the node containing node 'node'. This
  82 * architecture is flat, so it is a pretty simple function!
  83 */
  84#define parent_node(node) (node)
  85
  86#define pcibus_to_node(bus) __pcibus_to_node(bus)
  87
  88#define node_distance(a, b) __node_distance(a, b)
  89
  90#else /* !CONFIG_NUMA */
  91
  92#define numa_node_id numa_node_id
  93static inline int numa_node_id(void)
  94{
  95        return 0;
  96}
  97
  98#endif /* CONFIG_NUMA */
  99
 100#include <asm-generic/topology.h>
 101
 102#endif /* _ASM_S390_TOPOLOGY_H */
 103