linux-kernel - Re: [PATCH perf/urgent] perf tools: Fix the code to strip command name

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Message-ID: <20170420103543.GA1681@krava>
Date:   Thu, 20 Apr 2017 12:35:43 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Taeung Song <treeze.taeung@...il.com>
Cc:     Jiri Olsa <jolsa@...nel.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Jin Yao <yao.jin@...ux.intel.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH perf/urgent] perf tools: Fix the code to strip command
 name

On Thu, Apr 20, 2017 at 07:17:34PM +0900, Taeung Song wrote:
> Hi Jiri,
> 
> On 04/20/2017 06:24 PM, Jiri Olsa wrote:
> > Recent commit broke command name strip in perf_event__get_comm_ids
> > function. It replaced left to right search for '\n' with rtrim,
> > which actually does right to left search. It occasionally caught
> > earlier '\n' and kept trash in the command name.
> 
> Sorry for my commit that have failings.
> 
> Could I know the command name in the above case ?
> The command name can have two '\n' ?

it's the next line in the status file.. parts of the Umask string
and 1 newline

Name:   systemd
Umask:  0000
State:  S (sleeping)
...

I've already posted it in here:
  http://marc.info/?l=linuxppc-embedded&m=149200723316270&w=2

jirka