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

From	Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH V2 00/37] perf intel-pt: Power events and PTWRITE
Date	2017-06-27 17:30 +0200
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Em Mon, Jun 12, 2017 at 10:56:05AM -0300, Arnaldo Carvalho de Melo escreveu:
> 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,

Applied, will do some testing on a Kaby Lake machine before pushing to
Ingo, will leave in my tmp.perf/core branch before that.

- Arnaldo

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Re: [PATCH V2 00/37] perf intel-pt: Power events and PTWRITE Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-06-27 17:30 +0200

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