linux-kernel - Re: [PATCH v11 07/24] perf config: Document variables for 'help' section in man page

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Message-ID: <20151118004520.GF7062@sejong>
Date:	Wed, 18 Nov 2015 09:45:20 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Taeung Song <treeze.taeung@...il.com>
CC:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v11 07/24] perf config: Document variables for 'help'
 section in man page

On Tue, Nov 17, 2015 at 10:53:27PM +0900, Taeung Song wrote:
> Explain 'help.format' and 'help.autocorrect' variables.
> 
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Jiri Olsa <jolsa@...hat.com>
> Signed-off-by: Taeung Song <treeze.taeung@...il.com>
> ---
>  tools/perf/Documentation/perf-config.txt | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
> index bfbeb34..88e9b88 100644
> --- a/tools/perf/Documentation/perf-config.txt
> +++ b/tools/perf/Documentation/perf-config.txt
> @@ -242,6 +242,27 @@ annotate.*::
>  
>  		│1 1382:   movb   $0x1,-0x270(%rbp)
>  
> +help.*::
> +	help.format:: = man

What is this '= man' part?  Is it for default value?  It looks inconsistent anyway.


> +		A format of manual page can be 'man', 'info', 'web' or 'html'.
> +		'man' is default.

I don't know we support other format of manual pages.  Maybe asciidoc
does the job for us, but do we really care?  At least 'info' seems broken..


> +	help.autocorrect:: = 0
> +		Automatically correct and execute mistyped commands after
> +		waiting for the given number of deciseconds (0.1 sec).
> +		Let's see a example. If a mistyped sub-command is executed like 'perf mistyped-command'

s/a example/an example/

> +		and this option is 0, the output is as below.
> +
> +		perf: 'mistyped-command' is not a perf-command. See 'perf --help'.
> +
> +		Or if this option is more than 1, the output can be such as.
> +
> +		WARNING: You called a perf program named 'mistyped-command', which does not exist.
> +		Continuing under the assumption that you meant 'with-kcore'
> +		in 0.1 seconds automatically...
> +		Usage: perf-with-kcore <perf sub-command> <perf.data directory> [<sub-command options> [ -- <workload>]]
> +		<perf sub-command> can be record, script, report or inject
> +		    or: perf-with-kcore fix_buildid_cache_permissions

I wasn't aware of this feature and it seems completely broken.  If
it's a leftover from the git codebase, we'd better either to
disable/remove it or fix it.

Thanks,
Namhyung


> +
>  SEE ALSO
>  --------
>  linkperf:perf[1]
> -- 
> 1.9.1
> 
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