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

Adrian Hunter
2017-06-12T13:10:47Z

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?