* Arnaldo Carvalho de Melo <a...@kernel.org> wrote:
> Hi Ingo,
>
> Please consider pulling,
>
> - Arnaldo
>
> The following changes since commit 80fcd45ee05b4ef05e61d37a5ffb70a67095a9f6:
>
> Merge tag 'perf-core-for-mingo' of
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
> (2015-10-23 10:25:57 +0200)
>
> are available in the git repository at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git
> tags/perf-core-for-mingo
>
> for you to fetch changes up to 161d9041782b86c5493481566539bfc058ceeaff:
>
> perf tools: Provide help for subset of options (2015-10-23 21:50:50 -0300)
>
> ----------------------------------------------------------------
> perf/core improvements:
>
> New features:
>
> - Show ordered command line options when -h is used or when an
> unknown option is specified (Arnaldo Carvalho de Melo)
>
> - If options are passed after -h, show just its descriptions, not
> all options (Arnaldo Carvalho de Melo)
Very nice!
> Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
>
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (2):
> perf tools: Show tool command line options ordered
> perf tools: Provide help for subset of options
>
> tools/perf/util/parse-options.c | 90
> ++++++++++++++++++++++++++++++++++++-----
> 1 file changed, 81 insertions(+), 9 deletions(-)
Pulled, thanks a lot Arnaldo!
So I tested this a bit, and the ordering works well.
What wasn't so obvious to me was behavior like:
triton:~/tip> perf report -h x
Usage: perf report [<options>]
triton:~/tip>
triton:~/tip> perf report -h exclude-other
Usage: perf report [<options>]
triton:~/tip>
I.e. it outputs nothing and does not tell the user what's wrong.
Then I figured out the right syntax:
triton:~/tip> perf report -h --exclude-other
Usage: perf report [<options>]
-x, --exclude-other Only display entries with parent-match
triton:~/tip>
:)
So maybe we should also try a search for the option name with a '-' and '--'
prepended? Also, my pet peeve are partial matches:
triton:~/tip> perf report -h --exclude
Usage: perf report [<options>]
triton:~/tip>
But in any case it's a nice step forward!
Ingo
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