...
https://static.linaro.org/connect/lvc21/presentations/lvc21-302.pdf [PDF direct link].
https://lore.kernel.org/lkml/20230826070921.75956-1-leo.yan@linaro.org/
https://github.com/torvalds/linux/tree/master/tools/perf/util/arm-spe-decoder
https://github.com/torvalds/linux/blob/master/tools/perf/util/cs-etm.c
https://github.com/torvalds/linux/tree/master/drivers/hwtracing/coresight
https://github.com/torvalds/linux/blob/master/tools/perf/tests/shell/test_arm_spe.sh - perf test.
https://github.com/torvalds/linux/blob/master/tools/perf/Documentation/perf-arm-spe.txt