On Tue, 8 Oct 2019 at 10:47, Björn Töpel <bjorn.topel@xxxxxxxxx> wrote: > [...] > > The dependent-read-barrier in READ_ONCE? Another branch -- leave that > to the branch-predictor already! ;-) No, you're right, performance > impact here is interesting. I guess the same static_branch could be > used here as well... > ...and I think the READ_ONCE can be omitted.