LXR linux/arch/s390/include/asm/topology.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_S390_TOPOLOGY_H
   3#define _ASM_S390_TOPOLOGY_H
   4
   5#include <linux/cpumask.h>
   6#include <asm/numa.h>
   7
   8struct sysinfo_15_1_x;
   9struct cpu;
  10
  11#ifdef CONFIG_SCHED_TOPOLOGY
  12
  13struct cpu_topology_s390 {
  14        unsigned short thread_id;
  15        unsigned short core_id;
  16        unsigned short socket_id;
  17        unsigned short book_id;
  18        unsigned short drawer_id;
  19        unsigned short dedicated : 1;
  20        int booted_cores;
  21        cpumask_t thread_mask;
  22        cpumask_t core_mask;
  23        cpumask_t book_mask;
  24        cpumask_t drawer_mask;
  25};
  26
  27extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
  28
  29#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
  30#define topology_thread_id(cpu)           (cpu_topology[cpu].thread_id)
  31#define topology_sibling_cpumask(cpu)     (&cpu_topology[cpu].thread_mask)
  32#define topology_core_id(cpu)             (cpu_topology[cpu].core_id)
  33#define topology_core_cpumask(cpu)        (&cpu_topology[cpu].core_mask)
  34#define topology_book_id(cpu)             (cpu_topology[cpu].book_id)
  35#define topology_book_cpumask(cpu)        (&cpu_topology[cpu].book_mask)
  36#define topology_drawer_id(cpu)           (cpu_topology[cpu].drawer_id)
  37#define topology_drawer_cpumask(cpu)      (&cpu_topology[cpu].drawer_mask)
  38#define topology_cpu_dedicated(cpu)       (cpu_topology[cpu].dedicated)
  39#define topology_booted_cores(cpu)        (cpu_topology[cpu].booted_cores)
  40
  41#define mc_capable() 1
  42
  43void topology_init_early(void);
  44int topology_cpu_init(struct cpu *);
  45int topology_set_cpu_management(int fc);
  46void topology_schedule_update(void);
  47void store_topology(struct sysinfo_15_1_x *info);
  48void update_cpu_masks(void);
  49void topology_expect_change(void);
  50const struct cpumask *cpu_coregroup_mask(int cpu);
  51
  52#else /* CONFIG_SCHED_TOPOLOGY */
  53
  54static inline void topology_init_early(void) { }
  55static inline void topology_schedule_update(void) { }
  56static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
  57static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
  58static inline int topology_booted_cores(int cpu_nr) { return 1; }
  59static inline void update_cpu_masks(void) { }
  60static inline void topology_expect_change(void) { }
  61
  62#endif /* CONFIG_SCHED_TOPOLOGY */
  63
  64#define POLARIZATION_UNKNOWN    (-1)
  65#define POLARIZATION_HRZ        (0)
  66#define POLARIZATION_VL         (1)
  67#define POLARIZATION_VM         (2)
  68#define POLARIZATION_VH         (3)
  69
  70#define SD_BOOK_INIT    SD_CPU_INIT
  71
  72#ifdef CONFIG_NUMA
  73
  74#define cpu_to_node cpu_to_node
  75static inline int cpu_to_node(int cpu)
  76{
  77        return 0;
  78}
  79
  80/* Returns a pointer to the cpumask of CPUs on node 'node'. */
  81#define cpumask_of_node cpumask_of_node
  82static inline const struct cpumask *cpumask_of_node(int node)
  83{
  84        return cpu_possible_mask;
  85}
  86
  87#define pcibus_to_node(bus) __pcibus_to_node(bus)
  88
  89#else /* !CONFIG_NUMA */
  90
  91#define numa_node_id numa_node_id
  92static inline int numa_node_id(void)
  93{
  94        return 0;
  95}
  96
  97#endif /* CONFIG_NUMA */
  98
  99#include <asm-generic/topology.h>
 100
 101#endif /* _ASM_S390_TOPOLOGY_H */
 102