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[karo-tx-linux.git] / arch / arm / include / asm / topology.h
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
32 static inline void init_cpu_topology(void) { }
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 */