text: #ifndef PERF_BUILD_ID_H_
  #define PERF_BUILD_ID_H_ 1
  
  #define BUILD_ID_SIZE 20
  
  #include "tool.h"
  #include "types.h"
  
  extern struct perf_tool build_id__mark_dso_hit_ops;
  struct dso;
  
  int build_id__sprintf(const u8 *build_id, int len, char *bf);
  char *dso__build_id_filename(struct dso *self, char *bf, size_t size);
  
  int build_id__mark_dso_hit(struct perf_tool *tool, union perf_event *event,
  			   struct perf_sample *sample, struct perf_evsel *evsel,
  			   struct machine *machine);
  
  #endif
  