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Mike Mason <mmlnx@us.ibm.com> writes:
As far as I can tell, none of the tests invoke stap with the -u option (unoptimized mode). Doing so is revealing (see examples below). [...]
It would be worthwhile to review the history of the -u option in the archives. One will see that one of its motivations was specifically to minimize the effect of unpredictably incomplete debugging information for some $target variables. This way, only those variables actually used by end-user script code are asserted to exist, and tapsets can be optimistic in a sense.
It is true that this option can also mask cases where the named $target variables are completely wrong (that is, not present on any supportworthy kernel version). The difficulty lies in telling apart this class from the other one.
- FChE
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