Hi Peter, Fifth attempt at the PEBS-via-PT feature. The previous ones were [1], [2], [3], [4]. This one addresses review comments in patches 1/7 and 2/7, the tooling patches are intact, but I'm including them anyway.
The 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. [1] https://marc.info/?l=linux-kernel&m=155679423430002 [2] https://marc.info/?l=linux-kernel&m=156225605132606 [3] https://marc.info/?l=linux-kernel&m=156458152126310 [4] https://marc.info/?l=linux-kernel&m=156458348626999 Adrian Hunter (5): perf tools: Add aux_source attribute flag perf tools: Add itrace option 'o' to synthesize aux-source events perf intel-pt: Process options for PEBS event synthesis perf tools: Add aux-source config term perf intel-pt: Add brief documentation for PEBS via Intel PT Alexander Shishkin (2): perf: Allow normal events to be sources of AUX data perf/x86/intel: Support PEBS output to PT arch/x86/events/core.c | 34 +++++++++ arch/x86/events/intel/core.c | 18 +++++ arch/x86/events/intel/ds.c | 51 ++++++++++++- arch/x86/events/intel/pt.c | 5 ++ arch/x86/events/perf_event.h | 17 +++++ arch/x86/include/asm/intel_pt.h | 2 + arch/x86/include/asm/msr-index.h | 4 + include/linux/perf_event.h | 14 ++++ include/uapi/linux/perf_event.h | 3 +- kernel/events/core.c | 93 ++++++++++++++++++++++++ tools/include/uapi/linux/perf_event.h | 3 +- tools/perf/Documentation/intel-pt.txt | 15 ++++ tools/perf/Documentation/itrace.txt | 2 + tools/perf/Documentation/perf-record.txt | 2 + tools/perf/arch/x86/util/intel-pt.c | 23 ++++++ tools/perf/util/auxtrace.c | 4 + tools/perf/util/auxtrace.h | 3 + tools/perf/util/evsel.c | 4 + tools/perf/util/evsel.h | 2 + tools/perf/util/intel-pt.c | 18 +++++ tools/perf/util/parse-events.c | 8 ++ tools/perf/util/parse-events.h | 1 + tools/perf/util/parse-events.l | 1 + 23 files changed, 324 insertions(+), 3 deletions(-) -- 2.20.1
