perf_basename
base = perf_basename(basen);
d_filename = perf_basename(filename);
base = perf_basename(dso__long_name(dso));
ptr1 = (char *)perf_basename(exec_copy);
file = perf_basename(file);
return path__join(bf, size, symbol_conf.symfs, perf_basename(path));
const char *perf_basename(const char *path);