1. 根目录:
2. tools
3. perf
4. util
5. build-id.h

#ifndef PERF_BUILD_ID_H_
#define PERF_BUILD_ID_H_ 1

#include "session.h"

extern struct perf_tool build_id__mark_dso_hit_ops;

char *dso__build_id_filename(struct dso *self, char *bf, size_t size);

#endif