lkml.org 
[lkml]   [2015]   [Oct]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [tip:perf/core] perf tools: Improve call graph documents and help messages
Hi Ingo,

On Fri, Oct 23, 2015 at 6:03 PM, Ingo Molnar <mingo@kernel.org> wrote:
>
> * tip-bot for Namhyung Kim <tipbot@zytor.com> wrote:
>
>> Commit-ID: 76a26549eb367f683fbb394b7246bef5dc665f8c
>> Gitweb: http://git.kernel.org/tip/76a26549eb367f683fbb394b7246bef5dc665f8c
>> Author: Namhyung Kim <namhyung@kernel.org>
>> AuthorDate: Thu, 22 Oct 2015 23:28:32 +0900
>> Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
>> CommitDate: Thu, 22 Oct 2015 16:23:19 -0300
>>
>> perf tools: Improve call graph documents and help messages
>>
>> 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)
>
> Btw., how is the last line to be interpreted? Is the 'branch' value 0/1? If yes
> then the text should probably say so? Or does the string 'branch' have to be used?

Yep, the string 'branch' should be used.

Thanks,
Namhyung


\
 
 \ /
  Last update: 2015-10-24 18:21    [W:0.073 / U:0.084 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site