linux-kernel - Re: perf tip: fails to convert comm

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Date:	Sat, 16 Nov 2013 08:18:44 -0700
From:	David Ahern <dsahern@...il.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	Namhyung Kim <namhyung@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: perf tip: fails to convert comm

On 11/15/13, 6:02 PM, Frederic Weisbecker wrote:
> On Fri, Nov 15, 2013 at 09:29:51AM -0700, David Ahern wrote:
>> HI Frederic:
>>
>> On 11/13/13, 11:03 AM, Frederic Weisbecker wrote:
>>>
>>> I see. I can reproduce, I'll check and see what happens. It would be nice if
>>> we could have an option to dump internal perf events like comm events as well
>>> in the perf script stream.
>>
>> Any progress on a solution? This is a regression in 3.13.
>
> So the problem is that when a thread overrides its default ":%pid" comm, we forget
> to tag the thread comm as overriden. Hence, this overriden comm is not inherited on
> future forks.
>
> So here is a fix. Tell me if you see more issue, I'll cook a proper changelog and
> resend if everyting looks good.

That works for me. Thank you.

Tested-by: David Ahern <dsahern@...il.com>
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