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- pfelf.USDTProbe is now a type alias for usdt.Probe - pfelf.ParseUSDTProbes() delegates to usdt.ParseProbes() via adapter - pfelf.ParseUSDTArguments/USDTSpecToBytes delegate to usdt package - pfelfELFReader adapter implements usdt.ELFReader interface - All consumers (interpreter, processmanager, gpu, coredump) continue working transparently via the type alias
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The arm64 libparcagpucupti.so (Triton Proton) dropped libcupti.so from
DT_NEEDED and now loads it via runtime dlopen/dlsym. The old empty stub
had no CUPTI symbols, so dlsym("cuptiGetVersion") threw "Failed to load
libcupti.so".
Build mock libcupti.so and libcuda.so from the parcagpu repo's test
sources (test/mock_cupti.c, test/mock_cuda.c) which provide all CUPTI/
CUDA API functions that libparcagpucupti.so resolves at runtime. Minimal
type-definition headers are included so the mocks compile without the
CUDA SDK.
Set TRITON_CUPTI_LIB_PATH in the QEMU init script so the library finds
the mocks via the explicit path it checks first.
Read the registered CUPTI callbacks from the mock library's globals via
dlsym after InitializeInjection, since the mock has its own copy of
these symbols separate from the test binary.
InitializeInjection in libparcagpucupti.so is a singleton — it only
registers CUPTI callbacks on the first call. When TestCUDAEndToEndSingleShot
cleaned up and TestCUDAEndToEndMultiProbe called init_parcagpu again, the
singleton returned 1 without re-registering, leaving callback pointers NULL.
Load the library once in TestMain and clean up once at exit.
brancz
approved these changes
Apr 14, 2026
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Refactor now that most of the usdt code has been moved to a separate repo.