tools/perf/util/cpumap.h

   1 #ifndef __PERF_CPUMAP_H
   2 #define __PERF_CPUMAP_H
   3
   4 #include <stdio.h>
   5 #include <stdbool.h>
   6 #include <linux/atomic.h>
   7
   8 #include "perf.h"
   9 #include "util/debug.h"
  10
  11 struct cpu_map {
  12         atomic_t refcnt;
  13         int nr;
  14         int map[];
  15 };
  16
  17 struct cpu_map *cpu_map__new(const char *cpu_list);
  18 struct cpu_map *cpu_map__empty_new(int nr);
  19 struct cpu_map *cpu_map__dummy_new(void);
  20 struct cpu_map *cpu_map__read(FILE *file);
  21 size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
  22 int cpu_map__get_socket_id(int cpu);
  23 int cpu_map__get_socket(struct cpu_map *map, int idx, void *data);
  24 int cpu_map__get_core_id(int cpu);
  25 int cpu_map__get_core(struct cpu_map *map, int idx, void *data);
  26 int cpu_map__build_socket_map(struct cpu_map *cpus, struct cpu_map **sockp);
  27 int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep);
  28
  29 struct cpu_map *cpu_map__get(struct cpu_map *map);
  30 void cpu_map__put(struct cpu_map *map);
  31
  32 static inline int cpu_map__socket(struct cpu_map *sock, int s)
  33 {
  34         if (!sock || s > sock->nr || s < 0)
  35                 return 0;
  36         return sock->map[s];
  37 }
  38
  39 static inline int cpu_map__id_to_socket(int id)
  40 {
  41         return id >> 16;
  42 }
  43
  44 static inline int cpu_map__id_to_cpu(int id)
  45 {
  46         return id & 0xffff;
  47 }
  48
  49 static inline int cpu_map__nr(const struct cpu_map *map)
  50 {
  51         return map ? map->nr : 1;
  52 }
  53
  54 static inline bool cpu_map__empty(const struct cpu_map *map)
  55 {
  56         return map ? map->map[0] == -1 : true;
  57 }
  58
  59 int max_cpu_num;
  60 int max_node_num;
  61 int *cpunode_map;
  62
  63 int cpu__setup_cpunode_map(void);
  64
  65 static inline int cpu__max_node(void)
  66 {
  67         if (unlikely(!max_node_num))
  68                 pr_debug("cpu_map not initialized\n");
  69
  70         return max_node_num;
  71 }
  72
  73 static inline int cpu__max_cpu(void)
  74 {
  75         if (unlikely(!max_cpu_num))
  76                 pr_debug("cpu_map not initialized\n");
  77
  78         return max_cpu_num;
  79 }
  80
  81 static inline int cpu__get_node(int cpu)
  82 {
  83         if (unlikely(cpunode_map == NULL)) {
  84                 pr_debug("cpu_map not initialized\n");
  85                 return -1;
  86         }
  87
  88         return cpunode_map[cpu];
  89 }
  90
  91 int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res,
  92                        int (*f)(struct cpu_map *map, int cpu, void *data),
  93                        void *data);
  94 #endif /* __PERF_CPUMAP_H */