linux-kernel - Re: [PATCH V2 00/37] perf intel-pt: Power events and PTWRITE

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Message-ID: <a6bb32cd-28fb-c43d-8ef2-4a7bc42fa222@intel.com>
Date:   Wed, 21 Jun 2017 13:20:52 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Andi Kleen <ak@...ux.intel.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 00/37] perf intel-pt: Power events and PTWRITE

On 12/06/17 16:56, Arnaldo Carvalho de Melo wrote:
> Em Mon, Jun 12, 2017 at 04:04:44PM +0300, Adrian Hunter escreveu:
>> On 26/05/17 11:17, Adrian Hunter wrote:
>>> Hi
>>>
>>> Here are some patches to support Intel PT Power events and PTWRITE.
>>> Power events report changes to C-state but I have also added support
>>> for the existing CBR (core-to-bus ratio) packet and included that
>>> when outputting power events.  The PTWRITE packet is associated with
>>> the new ptwrite instruction, which is essentially just a way to stuff
>>> a 32 or 64 bit value into the PT trace.  More details can be found in
>>> the patches that add documentation and in the Intel SDM.
>>>
>>> As far as I know, there isn't any hardware released that supports
>>> the new packets, however the CBR packet is not new and will now be
>>> visible by default.
>>>
>>> There are also some miscellaneous improvements to Intel PT.
>>>
>>> There are 3 patches that introduce a new way to define synthesized
>>> events that carry arbitrary raw_data.  I sent an RFC about that earlier.
>>> The 3 patches are:
>>>       perf script: Add 'synth' event type for synthesized events
>>>       perf script: Add 'synth' field for synthesized event payloads
>>>       perf script: Add synthesized Intel PT power and ptwrite events
>>>
>>>
>>> Changes in V2:
>>>
>>> 	Reorder patches and add stable tags to fixes.
>>>
>>
>> Apart from "perf script: Add 'synth' event type for synthesized events"
>> patches still apply.  Any comments?
> 
> I'll look at it today,

I have sent V3 of two patches that did not now apply cleanly.