1 #ifndef _CPU_TOPOLOGY_H_ 2 #define _CPU_TOPOLOGY_H_ 3 4 #ifdef _KERNEL 5 6 /* CPU TOPOLOGY DATA AND FUNCTIONS */ 7 struct cpu_node { 8 struct cpu_node * parent_node; 9 struct cpu_node * child_node; 10 uint32_t child_no; 11 cpumask_t members; 12 uint8_t type; 13 }; 14 typedef struct cpu_node cpu_node_t; 15 16 extern int cpu_topology_levels_number; 17 extern cpu_node_t *root_cpu_node; 18 19 cpumask_t get_cpumask_from_level(int cpuid, uint8_t level_type); 20 cpu_node_t *get_cpu_node_by_cpuid(int cpuid); 21 22 #define LEVEL_NO 4 23 24 /* Level type for CPU siblings */ 25 #define PACKAGE_LEVEL 1 26 #define CHIP_LEVEL 2 27 #define CORE_LEVEL 3 28 #define THREAD_LEVEL 4 29 30 #define CPU_ISSET(n, p) ((CPUMASK(n) & p) != 0) 31 32 #define CPUSET_FOREACH(cpu, mask) \ 33 for ((cpu) = 0; (cpu) < ncpus; (cpu)++) \ 34 if (CPU_ISSET(cpu, mask)) 35 36 37 #endif /* _KERNEL */ 38 #endif /* _CPU_TOPOLOGY_H_ */ 39