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Hi - > > [...] I think it will be quite useful to allow renentrancy in > > probes. Not sure why would you want to restrict this. [...] > > It seems hazardous [...] I have a different example of the hazards of reentrant probe handling. Consider a single systemtap session, running global a probe kernel.function("foo") { ... a[0] ++ ... } probe perfcounter.tlbmiss(20) { ... a[0] ++ ... } If the perfcounter interrupt is allowed to be taken while the "foo" probe handler is running and has a lock on the "a" array, then we can deadlock. - FChE
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