Re: [RFC PATCH 07/12] rcu: Shutdown nocb timer on de-offloading

From: Frederic Weisbecker
Date: Wed Sep 23 2020 - 11:29:56 EST

On Mon, Sep 21, 2020 at 05:17:56PM -0700, Paul E. McKenney wrote:
> On Mon, Sep 21, 2020 at 02:43:46PM +0200, Frederic Weisbecker wrote:
> > Make sure the nocb timer can't fire anymore before we reach the final
> > de-offload state. Spuriously waking up the GP kthread is no big deal but
> > we must prevent from executing the timer callback without nocb locking.
> If we had just the previous patch and not this patch, would things break?
> Or are you relying on the fact that there is not yet a connection to
> userspace controls for this functionality?

Exactly it shouldn't break because only the last patch makes the code
eventually used.