Messages in this thread | | | From | Arnaldo Carvalho de Melo <> | Date | Wed, 12 Jun 2019 10:28:52 -0300 | Subject | Re: [PATCH 01/11] perf intel-pt: Add new packets for PEBS via PT |
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Em Wed, Jun 12, 2019 at 03:52:11PM +0300, Adrian Hunter escreveu: > On 12/06/19 3:41 PM, Arnaldo Carvalho de Melo wrote: > > Em Wed, Jun 12, 2019 at 08:58:00AM +0300, Adrian Hunter escreveu: > >> On 12/06/19 3:09 AM, Arnaldo Carvalho de Melo wrote: > >>> Em Mon, Jun 10, 2019 at 10:27:53AM +0300, Adrian Hunter escreveu: > >>>> Add 3 new packets to supports PEBS via PT, namely Block Begin Packet (BBP), > >>>> Block Item Packet (BIP) and Block End Packet (BEP). PEBS data is encoded > >>>> into multiple BIP packets that come between BBP and BEP. The BEP packet > >>>> might be associated with a FUP packet. That is indicated by using a > >>>> separate packet type (INTEL_PT_BEP_IP) similar to other packets types with > >>>> the _IP suffix. > >>>> > >>>> Refer to the Intel SDM for more information about PEBS via PT. > >>> > >>> In these cases would be nice to provide an URL and page number, for > >>> convenience. > >> > >> Intel SDM: > >> > >> https://software.intel.com/en-us/articles/intel-sdm > >> > >> May 2019 version: Vol. 3B 18.5.5.2 PEBS output to Intel® Processor Trace > > > > Thanks! I'll add to that cset. > > > > What about the kernel bits? > > Awaiting V2, here is a link to the patches: > > https://lore.kernel.org/lkml/20190502105022.15534-1-alexander.shishkin@linux.intel.com/
yeah, I saw those and PeterZ's comments, that is why I asked about them :-)
> There is also still a few more tools changes dependent upon the kernel patches.
But I think I can go ahead and push the decoder bits, when the kernel patches get merged we'll be almost ready to make full use of what it provides, right?
- Arnaldo
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