This is xnu-11215.1.10. See this file in:
Directory listing for xnu-11215.1.10//tests/ktrace
Makefile
kdebug_coproc_tests.c
kdebug_tests.c
kperf_backtracing_tests.c
kperf_helpers.c
kperf_helpers.h
kperf_tests.c
ktrace_helpers.h
ktrace_meta.h