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From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
To: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Greg KH <gregkh@linuxfoundation.org>, a.p.zijlstra@chello.nl,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
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Subject: Re: [RFC PATCH 00/20] Coresight integration with perf
In-Reply-To: <CANLsYkxitWS0hUXL_=T-V8qSXKvtyUc8F7NknDu16Xy0nN_o0A@mail.gmail.com>
References: <1442593594-10665-1-git-send-email-mathieu.poirier@linaro.org> <87zj04jnlw.fsf@ashishki-desk.ger.corp.intel.com> <CANLsYkxitWS0hUXL_=T-V8qSXKvtyUc8F7NknDu16Xy0nN_o0A@mail.gmail.com>
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Date: Fri, 02 Oct 2015 07:53:09 +0300
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Mathieu Poirier <mathieu.poirier@linaro.org> writes:

> On 30 September 2015 at 02:52, Alexander Shishkin
> <alexander.shishkin@linux.intel.com> wrote:
>> Mathieu Poirier <mathieu.poirier@linaro.org> writes:
>>
>>> This patchset aims to integrate configuration and control of
>>> the Coresight tracers with the perf sub-system.
>>>
>>> The goal is to use PMUs to represent tracers and the auxiliary
>>> buffer enhancement to collect processor traces.  As such a lot
>>> of work is done to move the current Coresight sysFS oriented
>>> configuration and control commands to perf's AUX API.
>>>
>>> For the time being the work concentrates on ETMv3 and ETB1.0
>>> sink buffers.  Work on ETMv4 and other type of sink buffers
>>> will follow once a foundation has been established.
>>>
>>> Enhancement to the perf command line tool can be found here [1].
>>> It is based on v4.2 but a rebase to v4.3-rcX will be available
>>> shortly.
>>>
>>> Best regards,
>>> Mathieu
>>>
>>> [1]. https://git.linaro.org/people/mathieu.poirier/coresight.git/shortlog/refs/heads/perf-v4.2
>>
>> I had a peek there -- didn't see an actual decoder for the ETM/PTM
>> binary stream or did I miss it somehow?
>
> A stream decoder is not included in this patch set but a couple of
> people are currently working on it.

Ok, thanks. Can you provide instructions in the next version on how one
can use this code to get a trace and decode it?

Regards,
--
Alex