Re: [PATCH v6] random: defer fast pool mixing to worker

[Sebastian Andrzej Siewior]

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