This patchset adds support for CoreSight CPU-wide trace scenarios. More
specifically it extends the work that was done for per thread scenarios to
handle more than a single trace ID. It also temporally correlate traces
based on timestamp generated by the tracers so that rendering by the perf
mechanic is ordered.
Everything is based on Arnaldo's perf/core branch (46d4c9a05285). I will
send another revision when it is rebased to a 5.2 rc candidate.
Before this set:
# root@juno:/home/linaro# perf record -e cs_etm/@20070000.etr/ -C 2,3
sleep 1
failed to mmap with 12 (Cannot allocate memory)
After this set:
# root@juno:/home/linaro# perf record -e cs_etm/@20070000.etr/ -C 2,3
sleep 1
[ perf record: Captured and wrote 1.352 MB perf.data ]
Regards,
Mathieu
Changes for V2:
* Fixed error condition in function cs_etm_set_option() (Leo)
* Fixed changelog spelling error (Leo).
* Moved from calloc() to malloc() in cs_etm__etmq_get_traceid_queue()
* Got rid of CS_ETM_PACKET_QUEUE_NR macro
* Fixed indentation problem in function cs_etm__process_traceid_queue() (Leo).
Mathieu Poirier (17):
perf tools: Configure contextID tracing in CPU-wide mode
perf tools: Configure timestsamp generation in CPU-wide mode
perf tools: Configure SWITCH_EVENTS in CPU-wide mode
perf tools: Add handling of itrace start events
perf tools: Add handling of switch-CPU-wide events
perf tools: Refactor error path in cs_etm_decoder__new()
perf tools: Move packet queue out of decoder structure
perf tools: Fix indentation in function
cs_etm__process_decoder_queue()
perf tools: Introduce the concept of trace ID queues
perf tools: Get rid of unused cpu in struct cs_etm_queue
perf tools: Move thread to traceid_queue
perf tools: Move tid/pid to traceid_queue
perf tools: Use traceID aware memory callback API
perf tools: Add support for multiple traceID queues
perf tools: Linking PE contextID with perf thread mechanic
perf tools: Add notion of time to decoding code
perf tools: Add support for CPU-wide trace scenarios
tools/perf/Makefile.config | 3 +
tools/perf/arch/arm/util/cs-etm.c | 186 ++-
.../perf/util/cs-etm-decoder/cs-etm-decoder.c | 269 +++--
.../perf/util/cs-etm-decoder/cs-etm-decoder.h | 39 +-
tools/perf/util/cs-etm.c | 1026 +++++++++++++----
tools/perf/util/cs-etm.h | 103 ++
6 files changed, 1252 insertions(+), 374 deletions(-)
--
2.17.1
