On 2022-02-11 18:00:21 [+0100], Jason A. Donenfeld wrote: > Hi Sebastian, Hi Jason, > On Fri, Feb 11, 2022 at 5:59 PM Sebastian Andrzej Siewior > <bigeasy@xxxxxxxxxxxxx> wrote: > > > Okay, I'll do that then, and then in the process get rid of the > > > cmpxchg loop since it's no longer required. > > > > So the only reason why we have that atomic_t is for rare case where run > > on the remote CPU and need to remove the upper bit in the counter? > > Yes. That's the only remaining reason. Annoying, but whatareyagonnado? A CPU hotplug notifier which removes unconditionally that bit when the CPU goes down or sets it to 0. We can keep it as it. Just an idea for later maybe ;) > Jason Sebastian
