1 #ifndef _ASM_ARM_TOPOLOGY_H
2 #define _ASM_ARM_TOPOLOGY_H
3 
4 #ifdef CONFIG_ARM_CPU_TOPOLOGY
5 
6 #include <linux/cpumask.h>
7 
8 struct cputopo_arm {
9 	int thread_id;
10 	int core_id;
11 	int socket_id;
12 	cpumask_t thread_sibling;
13 	cpumask_t core_sibling;
14 };
15 
16 extern struct cputopo_arm cpu_topology[NR_CPUS];
17 
18 #define topology_physical_package_id(cpu)	(cpu_topology[cpu].socket_id)
19 #define topology_core_id(cpu)		(cpu_topology[cpu].core_id)
20 #define topology_core_cpumask(cpu)	(&cpu_topology[cpu].core_sibling)
21 #define topology_thread_cpumask(cpu)	(&cpu_topology[cpu].thread_sibling)
22 
23 #define mc_capable()	(cpu_topology[0].socket_id != -1)
24 #define smt_capable()	(cpu_topology[0].thread_id != -1)
25 
26 void init_cpu_topology(void);
27 void store_cpu_topology(unsigned int cpuid);
28 const struct cpumask *cpu_coregroup_mask(int cpu);
29 
30 #else
31 
init_cpu_topology(void)32 static inline void init_cpu_topology(void) { }
store_cpu_topology(unsigned int cpuid)33 static inline void store_cpu_topology(unsigned int cpuid) { }
34 
35 #endif
36 
37 #include <asm-generic/topology.h>
38 
39 #endif /* _ASM_ARM_TOPOLOGY_H */
40