xref: /openbmc/linux/arch/s390/include/asm/topology.h (revision 31b90347)
1 #ifndef _ASM_S390_TOPOLOGY_H
2 #define _ASM_S390_TOPOLOGY_H
3 
4 #include <linux/cpumask.h>
5 
6 struct sysinfo_15_1_x;
7 struct cpu;
8 
9 #ifdef CONFIG_SCHED_BOOK
10 
11 struct cpu_topology_s390 {
12 	unsigned short core_id;
13 	unsigned short socket_id;
14 	unsigned short book_id;
15 	cpumask_t core_mask;
16 	cpumask_t book_mask;
17 };
18 
19 extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
20 
21 #define topology_physical_package_id(cpu)	(cpu_topology[cpu].socket_id)
22 #define topology_core_id(cpu)			(cpu_topology[cpu].core_id)
23 #define topology_core_cpumask(cpu)		(&cpu_topology[cpu].core_mask)
24 #define topology_book_id(cpu)			(cpu_topology[cpu].book_id)
25 #define topology_book_cpumask(cpu)		(&cpu_topology[cpu].book_mask)
26 
27 #define mc_capable() 1
28 
29 static inline const struct cpumask *cpu_coregroup_mask(int cpu)
30 {
31 	return &cpu_topology[cpu].core_mask;
32 }
33 
34 static inline const struct cpumask *cpu_book_mask(int cpu)
35 {
36 	return &cpu_topology[cpu].book_mask;
37 }
38 
39 int topology_cpu_init(struct cpu *);
40 int topology_set_cpu_management(int fc);
41 void topology_schedule_update(void);
42 void store_topology(struct sysinfo_15_1_x *info);
43 void topology_expect_change(void);
44 
45 #else /* CONFIG_SCHED_BOOK */
46 
47 static inline void topology_schedule_update(void) { }
48 static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
49 static inline void topology_expect_change(void) { }
50 
51 #endif /* CONFIG_SCHED_BOOK */
52 
53 #define POLARIZATION_UNKNOWN	(-1)
54 #define POLARIZATION_HRZ	(0)
55 #define POLARIZATION_VL		(1)
56 #define POLARIZATION_VM		(2)
57 #define POLARIZATION_VH		(3)
58 
59 #ifdef CONFIG_SCHED_BOOK
60 void s390_init_cpu_topology(void);
61 #else
62 static inline void s390_init_cpu_topology(void)
63 {
64 };
65 #endif
66 
67 #define SD_BOOK_INIT	SD_CPU_INIT
68 
69 #include <asm-generic/topology.h>
70 
71 #endif /* _ASM_S390_TOPOLOGY_H */
72