1. 根目录:
2. tools
3. perf
4. util
5. cpumap.h

#ifndef __PERF_CPUMAP_H
#define __PERF_CPUMAP_H

#include <stdio.h>
#include <stdbool.h>

struct cpu_map {
	int nr;
	int map[];
};

struct cpu_map *cpu_map__new(const char *cpu_list);
struct cpu_map *cpu_map__dummy_new(void);
void cpu_map__delete(struct cpu_map *map);
struct cpu_map *cpu_map__read(FILE *file);
size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp);
int cpu_map__get_socket(struct cpu_map *map, int idx);
int cpu_map__get_core(struct cpu_map *map, int idx);
int cpu_map__build_socket_map(struct cpu_map *cpus, struct cpu_map **sockp);
int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep);

static inline int cpu_map__socket(struct cpu_map *sock, int s)
{
	if (!sock || s > sock->nr || s < 0)
		return 0;
	return sock->map[s];
}

static inline int cpu_map__id_to_socket(int id)
{
	return id >> 16;
}

static inline int cpu_map__id_to_cpu(int id)
{
	return id & 0xffff;
}

static inline int cpu_map__nr(const struct cpu_map *map)
{
	return map ? map->nr : 1;
}

static inline bool cpu_map__empty(const struct cpu_map *map)
{
	return map ? map->map[0] == -1 : true;
}

#endif /* __PERF_CPUMAP_H */