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TOMOYO Linux Cross Reference
Linux/arch/s390/include/asm/topology.h

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  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 
  8 struct sysinfo_15_1_x;
  9 struct cpu;
 10 
 11 #ifdef CONFIG_SCHED_TOPOLOGY
 12 
 13 struct 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 
 27 extern 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 
 43 void topology_init_early(void);
 44 int topology_cpu_init(struct cpu *);
 45 int topology_set_cpu_management(int fc);
 46 void topology_schedule_update(void);
 47 void store_topology(struct sysinfo_15_1_x *info);
 48 void update_cpu_masks(void);
 49 void topology_expect_change(void);
 50 const struct cpumask *cpu_coregroup_mask(int cpu);
 51 
 52 #else /* CONFIG_SCHED_TOPOLOGY */
 53 
 54 static inline void topology_init_early(void) { }
 55 static inline void topology_schedule_update(void) { }
 56 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
 57 static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
 58 static inline int topology_booted_cores(int cpu_nr) { return 1; }
 59 static inline void update_cpu_masks(void) { }
 60 static 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
 75 static 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
 82 static 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
 92 static 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 

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