linux-kernel - Re: [PATCH v9 1/9] perf tools: Add 'perf-config' command

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Date:	Tue, 3 Nov 2015 20:36:53 +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, jolsa@...hat.com,
	Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v9 1/9] perf tools: Add 'perf-config' command

Hi Taeung,

On Tue, Nov 03, 2015 at 10:50:12AM +0900, Taeung Song wrote:
> The perf configuration file contains many variables which can make
> the perf command's action more effective.
> But looking through state of configuration is difficult and there's no knowing
> what kind of other variables except variables in perfconfig.example exist.
> So This patch adds 'perf-config' command with '--list' option and a document for it.
> 
>     perf config [options]
> 
>     display current perf config variables.
>     # perf config
>     or
>     # perf config -l | --list
> 
> Signed-off-by: Taeung Song <treeze.taeung@...il.com>

Acked-by: Namhyung Kim <namhyung@...nel.org>

One nitpick below..


[SNIP]
> +	call-graph.order::
> +		This option controls print order of callchains.  The default is
> +		'callee' which means callee is printed at top and then followed by its
> +		caller and so on.  The 'caller' prints it in reverse order.

The default value of this option is little complex.  I think we need
to add following paragraph:

		If this option is not set and report.children or top.children is
		set to true (or the equivalent command line option is given),
		the default value of this option is changed to 'caller' for the
		execution of 'perf report' or 'perf top'.  Other commands will
		still default to 'callee'.

Thanks,
Namhyung
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