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tools, bpftool: Clean subcommand help messages

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This is a clean-up for the formatting of the do_help functions for
bpftool's subcommands. The following fixes are included:

- Do not use argv[-2] for "iter" help message, as the help is shown by
  default if no "iter" action is selected, resulting in messages looking
  like "./bpftool bpftool pin...".

- Do not print unused HELP_SPEC_PROGRAM in help message for "bpftool
  link".

- Andrii used argument indexing to avoid having multiple occurrences of
  bin_name and argv[-2] in the fprintf() for the help message, for
  "bpftool gen" and "bpftool link". Let's reuse this for all other help
  functions. We can remove up to thirty arguments for the "bpftool map"
  help message.

- Harmonise all functions, e.g. use ending quotes-comma on a separate
  line.

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200523010751.23465-1-quentin@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Quentin Monnet
2020-05-23 02:07:51 +01:00
committed by Alexei Starovoitov
parent eae9d3c016
commit 90040351a8
11 changed files with 64 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
tools/bpf/bpftool/prog.c
View File

@@ -1984,24 +1984,24 @@ static int do_help(int argc, char **argv)
}
fprintf(stderr,
"Usage: %s %s { show | list } [PROG]\n"
" %s %s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
" %s %s dump jited PROG [{ file FILE | opcodes | linum }]\n"
" %s %s pin PROG FILE\n"
" %s %s { load | loadall } OBJ PATH \\\n"
"Usage: %1$s %2$s { show | list } [PROG]\n"
" %1$s %2$s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
" %1$s %2$s dump jited PROG [{ file FILE | opcodes | linum }]\n"
" %1$s %2$s pin PROG FILE\n"
" %1$s %2$s { load | loadall } OBJ PATH \\\n"
" [type TYPE] [dev NAME] \\\n"
" [map { idx IDX | name NAME } MAP]\\\n"
" [pinmaps MAP_DIR]\n"
" %s %s attach PROG ATTACH_TYPE [MAP]\n"
" %s %s detach PROG ATTACH_TYPE [MAP]\n"
" %s %s run PROG \\\n"
" %1$s %2$s attach PROG ATTACH_TYPE [MAP]\n"
" %1$s %2$s detach PROG ATTACH_TYPE [MAP]\n"
" %1$s %2$s run PROG \\\n"
" data_in FILE \\\n"
" [data_out FILE [data_size_out L]] \\\n"
" [ctx_in FILE [ctx_out FILE [ctx_size_out M]]] \\\n"
" [repeat N]\n"
" %s %s profile PROG [duration DURATION] METRICs\n"
" %s %s tracelog\n"
" %s %s help\n"
" %1$s %2$s profile PROG [duration DURATION] METRICs\n"
" %1$s %2$s tracelog\n"
" %1$s %2$s help\n"
"\n"
" " HELP_SPEC_MAP "\n"
" " HELP_SPEC_PROGRAM "\n"
@@ -2022,10 +2022,7 @@ static int do_help(int argc, char **argv)
" METRIC := { cycles | instructions | l1d_loads | llc_misses }\n"
" " HELP_SPEC_OPTIONS "\n"
"",
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
bin_name, argv[-2], bin_name, argv[-2]);
bin_name, argv[-2]);
return 0;
}