linux-kernel - Re: [PATCH 2/2] perf tools: Improve call graph documents and help messages

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Date:	Thu, 22 Oct 2015 15:37:57 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Borislav Petkov <bp@...e.de>,
	Brendan Gregg <brendan.d.gregg@...il.com>,
	Chandler Carruth <chandlerc@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH 2/2] perf tools: Improve call graph documents and help
 messages

Em Thu, Oct 22, 2015 at 11:28:32PM +0900, Namhyung Kim escreveu:
> The --call-graph option is complex so we should provide better guide for
> users.  Also change help message to be consistent with config option
> names.  Now perf top will show help like below:
> 
>   $ perf top --call-graph
>     Error: option `call-graph' requires a value
> 
>    Usage: perf top [<options>]
> 
>       --call-graph <record_mode[,record_size],print_type,threshold[,print_limit],order,sort_key[,branch]>
>            setup and enables call-graph (stack chain/backtrace):
> 
> 		record_mode:	call graph recording mode (fp|dwarf|lbr)
> 		record_size:	if record_mode is 'dwarf', max size of stack recording (<bytes>)
> 				default: 8192 (bytes)
> 		print_type:	call graph printing style (graph|flat|fractal|none)
> 		threshold:	minimum call graph inclusion threshold (<percent>)
> 		print_limit:	maximum number of call graph entry (<number>)
> 		order:		call graph order (caller|callee)
> 		sort_key:	call graph sort key (function|address)
> 		branch:		include last branch info to call graph (branch)
> 
> 		Default: fp,graph,0.5,caller,function

Applied.
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