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__new_data(struct cpu_map_data *data);
  21 struct cpu_map *cpu_map__read(FILE *file);
  22 size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
  23 int cpu_map__get_socket_id(int cpu);
  24 int cpu_map__get_socket(struct cpu_map *map, int idx, void *data);
  25 int cpu_map__get_core_id(int cpu);
  26 int cpu_map__get_core(struct cpu_map *map, int idx, void *data);
  27 int cpu_map__build_socket_map(struct cpu_map *cpus, struct cpu_map **sockp);
  28 int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep);
  29
  30 struct cpu_map *cpu_map__get(struct cpu_map *map);
  31 void cpu_map__put(struct cpu_map *map);
  32
  33 static inline int cpu_map__socket(struct cpu_map *sock, int s)
  34 {
  35         if (!sock || s > sock->nr || s < 0)
  36                 return 0;
  37         return sock->map[s];
  38 }
  39
  40 static inline int cpu_map__id_to_socket(int id)
  41 {
  42         return id >> 16;
  43 }
  44
  45 static inline int cpu_map__id_to_cpu(int id)
  46 {
  47         return id & 0xffff;
  48 }
  49
  50 static inline int cpu_map__nr(const struct cpu_map *map)
  51 {
  52         return map ? map->nr : 1;
  53 }
  54
  55 static inline bool cpu_map__empty(const struct cpu_map *map)
  56 {
  57         return map ? map->map[0] == -1 : true;
  58 }
  59
  60 int max_cpu_num;
  61 int max_node_num;
  62 int *cpunode_map;
  63
  64 int cpu__setup_cpunode_map(void);
  65
  66 static inline int cpu__max_node(void)
  67 {
  68         if (unlikely(!max_node_num))
  69                 pr_debug("cpu_map not initialized\n");
  70
  71         return max_node_num;
  72 }
  73
  74 static inline int cpu__max_cpu(void)
  75 {
  76         if (unlikely(!max_cpu_num))
  77                 pr_debug("cpu_map not initialized\n");
  78
  79         return max_cpu_num;
  80 }
  81
  82 static inline int cpu__get_node(int cpu)
  83 {
  84         if (unlikely(cpunode_map == NULL)) {
  85                 pr_debug("cpu_map not initialized\n");
  86                 return -1;
  87         }
  88
  89         return cpunode_map[cpu];
  90 }
  91
  92 int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res,
  93                        int (*f)(struct cpu_map *map, int cpu, void *data),
  94                        void *data);
  95 #endif /* __PERF_CPUMAP_H */