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 */