linux-kernel - Re: [PATCH V6 08/17] perf tools: Add Intel PT support

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Date:	Fri, 19 Jun 2015 16:41:56 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Adrian Hunter <adrian.hunter@...el.com>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH V6 08/17] perf tools: Add Intel PT support

Em Fri, Jun 19, 2015 at 10:33:43PM +0300, Adrian Hunter escreveu:
> On 19/06/2015 7:04 p.m., Arnaldo Carvalho de Melo wrote:
> >Em Fri, May 29, 2015 at 04:33:36PM +0300, Adrian Hunter escreveu:
> >>Add support for Intel Processor Trace.

> >>Intel PT support fits within the new auxtrace infrastructure.
> >>Recording is supporting by identifying the Intel PT PMU,
> >>parsing options and setting up events.  Decoding is supported
> >>by queuing up trace data by cpu or thread and then decoding
> >>synchronously delivering synthesized event samples into the
> >>session processing for tools to consume.

> >So, at this point what commands should I use to test this? I expected to
> >be able to have some command here, in this changeset log, telling me
> >that what has been applied so far + this "Add Intel PT support", can be
> >used in such and such a fashion, obtaining this and that output.

> >Now I'll go back and look at the cover letter to see what I can do at
> >this point and with access to a Broadwell class machine.

> Actually you need the next patch "perf tools: Take Intel PT into use" to do anything.

Yeah, saw that, the title of this patch fooled me into thinking that
Intel PT support was added :-)

Anyway, stopping for a moment to push stuff ready to Ingo, will get back
to this after that.

- Arnaldo
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