A set of changes that came out of the issues reported here [1].
* First 2 patches fix a decode bug in Perf and add support for new consistency checks in OpenCSD * The remaining ones make the disassembly script easier to test and use. This also involves adding a new Python binding to Perf to get a config value (perf_config_get())
[1]: https://lore.kernel.org/linux-arm-kernel/20240719092619.274730-1-gankulkarni...
Changes since V2: * Check validity of start stop arguments * Make test work if Perf was installed * Document that start and stop time are monotonic clock values
Changes since V1: * Keep the flush function for discontinuities * Still remove the flush when the buffer fills, but now add cs_etm__end_block() for the end trace. That way we won't drop the last branch stack if the instruction sample period wasn't hit at the very end.
James Clark (7): perf cs-etm: Don't flush when packet_queue fills up perf cs-etm: Use new OpenCSD consistency checks perf scripting python: Add function to get a config value perf scripts python cs-etm: Update to use argparse perf scripts python cs-etm: Improve arguments perf scripts python cs-etm: Add start and stop arguments perf test: cs-etm: Test Coresight disassembly script
.../perf/Documentation/perf-script-python.txt | 2 +- .../scripts/python/Perf-Trace-Util/Context.c | 11 ++ .../scripts/python/arm-cs-trace-disasm.py | 127 ++++++++++++++---- .../tests/shell/test_arm_coresight_disasm.sh | 65 +++++++++ tools/perf/util/config.c | 22 +++ tools/perf/util/config.h | 1 + .../perf/util/cs-etm-decoder/cs-etm-decoder.c | 7 +- tools/perf/util/cs-etm.c | 25 +++- 8 files changed, 225 insertions(+), 35 deletions(-) create mode 100755 tools/perf/tests/shell/test_arm_coresight_disasm.sh