Messages in this thread | | | Date | Fri, 14 May 2021 08:55:22 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] sched/isolation: reconcile rcu_nocbs= and nohz_full= |
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* Paul E. McKenney <paulmck@kernel.org> wrote:
> On Thu, May 13, 2021 at 02:13:28PM +0200, Ingo Molnar wrote: > > > > * Paul E. McKenney <paulmck@kernel.org> wrote: > > > > > On Mon, Apr 19, 2021 at 12:26:59AM -0400, Paul Gortmaker wrote: > > > > We have a mismatch between RCU and isolation -- in relation to what is > > > > considered the maximum valid CPU number. > > > > > > > > This matters because nohz_full= and rcu_nocbs= are joined at the hip; in > > > > fact the former will enforce the latter. So we don't want a CPU mask to > > > > be valid for one and denied for the other. > > > > > > > > The difference 1st appeared as of v4.15; further details are below. > > > > > > I pulled this into -rcu for testing and further review. > > > > > > If it should instead go through some other tree: > > > > > > Acked-by: Paul E. McKenney <paulmck@kernel.org> > > > > Thanks - added this fix to tip:sched/core. > > Very good, I will drop it from -rcu later today, Pacific Time.
Thank you!
Ingo
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