1#ifndef _ASM_S390_TOPOLOGY_H
 2#define _ASM_S390_TOPOLOGY_H
 3
 4#include <linux/cpumask.h>
 5#include <asm/sysinfo.h>
 6
 
 7struct cpu;
 8
 9#ifdef CONFIG_SCHED_BOOK
10
11extern unsigned char cpu_core_id[NR_CPUS];
12extern cpumask_t cpu_core_map[NR_CPUS];
13
14static inline const struct cpumask *cpu_coregroup_mask(int cpu)
15{
16	return &cpu_core_map[cpu];
17}
18
19#define topology_core_id(cpu)		(cpu_core_id[cpu])
20#define topology_core_cpumask(cpu)	(&cpu_core_map[cpu])
21#define mc_capable()			(1)
 
 
22
23extern unsigned char cpu_book_id[NR_CPUS];
24extern cpumask_t cpu_book_map[NR_CPUS];
25
26static inline const struct cpumask *cpu_book_mask(int cpu)
27{
28	return &cpu_book_map[cpu];
29}
 
 
 
 
 
 
30
31#define topology_book_id(cpu)		(cpu_book_id[cpu])
32#define topology_book_cpumask(cpu)	(&cpu_book_map[cpu])
33
 
34int topology_cpu_init(struct cpu *);
35int topology_set_cpu_management(int fc);
36void topology_schedule_update(void);
37void store_topology(struct sysinfo_15_1_x *info);
38void topology_expect_change(void);
 
39
40#else /* CONFIG_SCHED_BOOK */
41
 
42static inline void topology_schedule_update(void) { }
43static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
 
44static inline void topology_expect_change(void) { }
45
46#endif /* CONFIG_SCHED_BOOK */
47
48#define POLARIZATION_UNKNOWN	(-1)
49#define POLARIZATION_HRZ	(0)
50#define POLARIZATION_VL		(1)
51#define POLARIZATION_VM		(2)
52#define POLARIZATION_VH		(3)
53
54extern int cpu_polarization[];
55
56static inline void cpu_set_polarization(int cpu, int val)
 
 
 
57{
58#ifdef CONFIG_SCHED_BOOK
59	cpu_polarization[cpu] = val;
60#endif
61}
62
63static inline int cpu_read_polarization(int cpu)
 
 
64{
65#ifdef CONFIG_SCHED_BOOK
66	return cpu_polarization[cpu];
67#else
68	return POLARIZATION_HRZ;
69#endif
70}
71
72#ifdef CONFIG_SCHED_BOOK
73void s390_init_cpu_topology(void);
74#else
75static inline void s390_init_cpu_topology(void)
 
 
 
 
76{
77};
78#endif
79
80#define SD_BOOK_INIT	SD_CPU_INIT
81
82#include <asm-generic/topology.h>
83
84#endif /* _ASM_S390_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 node_id;
 20	unsigned short dedicated : 1;
 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];
 28extern cpumask_t cpus_with_topology;
 29
 30#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
 31#define topology_thread_id(cpu)		  (cpu_topology[cpu].thread_id)
 32#define topology_sibling_cpumask(cpu)	  (&cpu_topology[cpu].thread_mask)
 33#define topology_core_id(cpu)		  (cpu_topology[cpu].core_id)
 34#define topology_core_cpumask(cpu)	  (&cpu_topology[cpu].core_mask)
 35#define topology_book_id(cpu)		  (cpu_topology[cpu].book_id)
 36#define topology_book_cpumask(cpu)	  (&cpu_topology[cpu].book_mask)
 37#define topology_drawer_id(cpu)		  (cpu_topology[cpu].drawer_id)
 38#define topology_drawer_cpumask(cpu)	  (&cpu_topology[cpu].drawer_mask)
 39#define topology_cpu_dedicated(cpu)	  (cpu_topology[cpu].dedicated)
 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 topology_expect_change(void);
 49const struct cpumask *cpu_coregroup_mask(int cpu);
 50
 51#else /* CONFIG_SCHED_TOPOLOGY */
 52
 53static inline void topology_init_early(void) { }
 54static inline void topology_schedule_update(void) { }
 55static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
 56static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
 57static inline void topology_expect_change(void) { }
 58
 59#endif /* CONFIG_SCHED_TOPOLOGY */
 60
 61#define POLARIZATION_UNKNOWN	(-1)
 62#define POLARIZATION_HRZ	(0)
 63#define POLARIZATION_VL		(1)
 64#define POLARIZATION_VM		(2)
 65#define POLARIZATION_VH		(3)
 66
 67#define SD_BOOK_INIT	SD_CPU_INIT
 68
 69#ifdef CONFIG_NUMA
 70
 71#define cpu_to_node cpu_to_node
 72static inline int cpu_to_node(int cpu)
 73{
 74	return cpu_topology[cpu].node_id;
 
 
 75}
 76
 77/* Returns a pointer to the cpumask of CPUs on node 'node'. */
 78#define cpumask_of_node cpumask_of_node
 79static inline const struct cpumask *cpumask_of_node(int node)
 80{
 81	return &node_to_cpumask_map[node];
 
 
 
 
 82}
 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
 91static 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 */