fd_extra 315 tools/perf/tests/dso-data.c int fd, fd_extra; fd_extra 353 tools/perf/tests/dso-data.c fd_extra = open("/dev/null", O_RDONLY); fd_extra 354 tools/perf/tests/dso-data.c TEST_ASSERT_VAL("failed to open extra fd", fd_extra > 0); fd_extra 377 tools/perf/tests/dso-data.c close(fd_extra);