> That's not the problem. We use per-cpu values for each counter (and > when the user asks for the value, we add together the values from > each processor). At least on x86 gcc usually seems to just generate an incl, which should be ok because it is atomic enough (even when a reschedule happens it will act as a full memory barrier) So it'll likely just be a problem for load-store architectures. -Andi - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html