linux-kernel - Re: [PATCH 2/6] perf config: Document examples to get config key-value pairs in man page

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Date:   Tue, 15 Nov 2016 01:30:47 +0900
From:   Taeung Song <treeze.taeung@...il.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Wang Nan <wangnan0@...wei.com>,
        Nambong Ha <over3025@...il.com>, Wookje Kwon <aweee0@...il.com>
Subject: Re: [PATCH 2/6] perf config: Document examples to get config
 key-value pairs in man page



On 11/15/2016 12:51 AM, Arnaldo Carvalho de Melo wrote:
> Em Fri, Nov 04, 2016 at 03:44:18PM +0900, Taeung Song escreveu:
>> Explain how to query particular config items in config file
>> and how to get several config items from user or system config file
>> using '--user' or '--system' options.
>
> This one should be combined with the previous one, i.e. the patch that
> introduces this feature, doing it myself.
>

I got it! :)
I'll combine getting functionality and examples getting config info as a 
patch.

Thanks,
Taeung

>
>> Cc: Namhyung Kim <namhyung@...nel.org>
>> Cc: Jiri Olsa <jolsa@...nel.org>
>> Cc: Wang Nan <wangnan0@...wei.com>
>> Signed-off-by: Taeung Song <treeze.taeung@...il.com>
>> ---
>>  tools/perf/Documentation/perf-config.txt | 18 ++++++++++++++++++
>>  1 file changed, 18 insertions(+)
>>
>> diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
>> index cb081ac5..1714b0c 100644
>> --- a/tools/perf/Documentation/perf-config.txt
>> +++ b/tools/perf/Documentation/perf-config.txt
>> @@ -8,6 +8,8 @@ perf-config - Get and set variables in a configuration file.
>>  SYNOPSIS
>>  --------
>>  [verse]
>> +'perf config' [<file-option>] [section.name ...]
>> +or
>>  'perf config' [<file-option>] -l | --list
>>
>>  DESCRIPTION
>> @@ -118,6 +120,22 @@ Given a $HOME/.perfconfig like this:
>>  		children = true
>>  		group = true
>>
>> +To query the record mode of call graph, do
>> +
>> +	% perf config call-graph.record-mode
>> +
>> +If you want to know multiple config key/value pairs, you can do like
>> +
>> +	% perf config report.queue-size call-graph.order report.children
>> +
>> +To query the config value of sort order of call graph in user config file (i.e. `~/.perfconfig`), do
>> +
>> +	% perf config --user call-graph.sort-order
>> +
>> +To query the config value of buildid directory in system config file (i.e. `$(sysconf)/perfconfig`), do
>> +
>> +	% perf config --system buildid.dir
>> +
>>  Variables
>>  ~~~~~~~~~
>>
>> --
>> 2.7.4