utrace future work
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- Engine callback order
Performance measurement & tuning
- Global tracing (?)
See https://www.redhat.com/archives/utrace-devel/2008-August/msg00007.html thread for discussion on this.
- Extension events
- Hardware branch-tracing interface (?)
- Instruction-copying machinery, for:
- Breakpoint assistance
- Single-step emulation on hardware without built-in single-step
- Branch-step emulation on hardware without built-in branch-step
- Step over atomic sequence, e.g. powerpc locks
- Special event on sigwait dequeue (?)