Tracing: no shortage of options

> James Bottomley has been playing some with the SystemTap code; one result 
> of that work is changes to SystemTap's internal relocation code in an 
> attempt to make it more acceptable for mainline kernel inclusion.

The part of systemtap code that James is proposing to modify lives
entirely in user-space, so mainline kernel inclusion of that part
hasn't even come up.