linux-kernel - Re: [PATCH v2] perf debug: List available options when no variable is specified

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Message-ID: <ZUUR2/9An1ccCY+C@kernel.org>
Date:   Fri, 3 Nov 2023 12:29:31 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Yang Jihong <yangjihong1@...wei.com>
Cc:     peterz@...radead.org, mingo@...hat.com, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
        namhyung@...nel.org, irogers@...gle.com, adrian.hunter@...el.com,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] perf debug: List available options when no variable
 is specified

Em Wed, Nov 01, 2023 at 06:45:43AM +0000, Yang Jihong escreveu:
> Minor help message improvement for `perf --debug`
 
> Before:
 
>   # perf --debug
>   No variable specified for --debug.
 
>    Usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS]
 
> After:
 
>   # perf --debug
>   No variable specified for --debug, available options: verbose,ordered-events,stderr,data-convert,perf-event-open
> 
>    Usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS]

Acked-by: Arnaldo Carvalho de Melo <acme@...hat.com>

- Arnaldo
 
> Suggested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> Signed-off-by: Yang Jihong <yangjihong1@...wei.com>
> ---
> 
> Changes since v1:
>  - Provide helper to iterate debug_opts and print name instead of adding a new variable.