On Wed, Jul 24, 2019 at 06:55:47PM +0200, Jann Horn wrote: > (Accurate) statistics counters need RMW ops, don't need memory > ordering, usually can't be locked against writes, and may not care > about wrapping. > This thing doesn't need RMW ops, does need memory ordering, can be > locked against writes, and definitely shouldn't wrap. > > I agree that there are a bunch of statistics counters in the kernel, > and it's not necessarily a bad idea to use a separate type for them; > but this is not a statistics counter. Right, yes, I didn't meant to suggest it should be. I was just bringing up the "counter type" idea again, since it was on my mind here originally. -- Kees Cook
