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

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Message-ID: <28b91633-b468-fc8b-b918-0cd5d06864e7@gmail.com>
Date:   Thu, 20 Apr 2017 19:42:31 +0900
From:   Taeung Song <treeze.taeung@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     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 04/20/2017 07:35 PM, Jiri Olsa wrote:
> 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
>

I understood it.
Sorry for my mistake..

Thanks,
Taeung