Alexander Shishkin <alexander.shish...@linux.intel.com> writes: > Hi Peter, > > New PEBS feature: output to Intel PT stream instead of the DS area. It's > theoretically useful in virtualized environments, where DS area can't be > used. It's also good for those who are interested in instruction trace for > context of the PEBS events. As PEBS goes, it can provide LBR context with > all the branch-related information that PT doesn't provide at the moment. > > PEBS records are packetized in the PT stream, so instead of extracting > them in the PMI, we leave it to the perf tool, because real time PT > decoding is not practical. Tooling patches are not included, but can be > found here [1]. > > Added is an attribute bit 'aux_source' to mean that an event is a source of > AUX data. This bit enables PEBS output to PT.
Forgot to CC Kan. Regards, -- Alex