xref: /linux/arch/arm/include/asm/topology.h (revision bfd5bb6f90af092aa345b15cd78143956a13c2a8)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_ARM_TOPOLOGY_H
3 #define _ASM_ARM_TOPOLOGY_H
4 
5 #ifdef CONFIG_ARM_CPU_TOPOLOGY
6 
7 #include <linux/cpumask.h>
8 
9 struct cputopo_arm {
10 	int thread_id;
11 	int core_id;
12 	int socket_id;
13 	cpumask_t thread_sibling;
14 	cpumask_t core_sibling;
15 };
16 
17 extern struct cputopo_arm cpu_topology[NR_CPUS];
18 
19 #define topology_physical_package_id(cpu)	(cpu_topology[cpu].socket_id)
20 #define topology_core_id(cpu)		(cpu_topology[cpu].core_id)
21 #define topology_core_cpumask(cpu)	(&cpu_topology[cpu].core_sibling)
22 #define topology_sibling_cpumask(cpu)	(&cpu_topology[cpu].thread_sibling)
23 
24 void init_cpu_topology(void);
25 void store_cpu_topology(unsigned int cpuid);
26 const struct cpumask *cpu_coregroup_mask(int cpu);
27 
28 #include <linux/arch_topology.h>
29 
30 /* Replace task scheduler's default frequency-invariant accounting */
31 #define arch_scale_freq_capacity topology_get_freq_scale
32 
33 /* Replace task scheduler's default cpu-invariant accounting */
34 #define arch_scale_cpu_capacity topology_get_cpu_scale
35 
36 #else
37 
38 static inline void init_cpu_topology(void) { }
39 static inline void store_cpu_topology(unsigned int cpuid) { }
40 
41 #endif
42 
43 #include <asm-generic/topology.h>
44 
45 #endif /* _ASM_ARM_TOPOLOGY_H */
46