Messages in this thread | | | Subject | Re: [RFC PATCH 5/6] implement per-cpu&per-domain state machine call_srcu() | From | Peter Zijlstra <> | Date | Sat, 10 Mar 2012 11:12:29 +0100 |
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On Thu, 2012-03-08 at 11:49 -0800, Paul E. McKenney wrote: > > I too have used (long)(a - b) for a long time, but I saw with my own eyes > the glee in the compiler-writers' eyes when they discussed signed overflow > being undefined in the C standard. I believe that the reasons for signed > overflow being undefined are long obsolete, but better safe than sorry.
Thing is, if they break that the whole kernel comes falling down, I really wouldn't worry about RCU at that point. But to each their pet-paranoia I guess ;-)
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