usage: kernel-doc [-h] [-v] [-d] [-M MODULENAME] [-l] [-Wreturn]
                  [-Wshort-desc] [-Wcontents-before-sections] [-Wall]
                  [-Werror] [-export-file EXPORT_FILE] [-m | -r | -N] [-e |
                  -i | -s SYMBOL] [-n NOSYMBOL] [-D]
                  FILE [FILE ...]
kernel-doc: error: the following arguments are required: FILE
Warning: tools/testing/selftests/bpf/prog_tests/task_local_data.h:326 No description found for return value of 'tld_create_key'
Warning: tools/testing/selftests/bpf/prog_tests/task_local_data.h:359 No description found for return value of 'tld_get_data'
Warning: tools/testing/selftests/bpf/progs/task_local_data.bpf.h:140 No description found for return value of 'tld_object_init'