On Thu, May 05 2022 at 10:28, Peter Zijlstra wrote: > On Thu, May 05, 2022 at 01:15:07AM +0200, Thomas Gleixner wrote: >> We don't have stomp_cpumask() today, but that's trivial enough to >> implement. > > I don't think we want to gift people a random cpumask stop_machine(), Fair enough. > but here's one that stops a core. It runs the @fn on every cpu since I > thought to have understood that was the requirement for this muck. Yes. > *completely* untestededed. Looks about right neverthelessesseess.