Release Notes for DTrace 2.0.1

2.0.1-1 (May 6th, 2024)

New features:

• Function Boundary Tracing (FBT) probes can now access function arguments using argv[n] where n is bound by the number of arguments of the function. The datatype of each argument is a generic uint64_t for now.

Internal changes:

• Function BOundary Tracing (FBT) probes are now implemented using the more lightweight fentry/fexit kernel tracing facility. Fallback to kprobes is provided for kernels that do not provide fentry/fexit probing using BPF.

Build-time:

• D translators are now included with the DTrace source code, and will be installed for all supported kernel versions. This mens that building DTrace no longer requires access to kernel development headers.