> In fact, I'll argue FREEZE_ON_OVERFLOW is unfixably broken for > independent counters, because while one counter overflows, we'll stall > counting on all others until we've handled the PMI. > > Even though the PMI might not be for them and they very much want/need > to continue counting.
We stop all counters in any case for the PMI. With freeze-on-PMI it just happens slightly earlier. -Andi