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Linux/arch/arm/include/asm/topology.h

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  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_sibling_cpumask(cpu)   (&cpu_topology[cpu].thread_sibling)
 22 
 23 void init_cpu_topology(void);
 24 void store_cpu_topology(unsigned int cpuid);
 25 const struct cpumask *cpu_coregroup_mask(int cpu);
 26 
 27 #else
 28 
 29 static inline void init_cpu_topology(void) { }
 30 static inline void store_cpu_topology(unsigned int cpuid) { }
 31 
 32 #endif
 33 
 34 #include <asm-generic/topology.h>
 35 
 36 #endif /* _ASM_ARM_TOPOLOGY_H */
 37 

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