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DTrace blacklist?

DTrace blacklist?

Posted Aug 7, 2007 21:25 UTC (Tue) by bcantrill (guest, #31087)
In reply to: Minor factual errors regarding systemtap by fuhchee
Parent article: On DTrace envy

The documentation not only mutters about a blacklist. There are kernel-side and systemtap-side blacklists. (There exists a similar blacklist in dtrace for analogous low-level kernel code.) (Emphasis added)
What are you referring to? We dynamically decide what can be safely instrumented; there is no "blacklist of functions" to maintain in DTrace. This is not to say that we can instrument every function, just that we determine whether or not we can safely instrument a function on-the-fly. And I might add that because of our safety-centric architecture, there are very few contexts that one cannot safely instrument...


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