On Mon, 25 Mar 2019 02:27:14 -0700 Eric Dumazet <eric.duma...@gmail.com> wrote:
> > +#ifdef CONFIG_SLUB > > + /* SLUB writes into objects when freeing */ > > + prefetchw(segs); > > +#endif > > This is done too late : > You should probably either remove this prefetchw() > or do it before reading segs->next at the beginning of the loop. Agree. Not sure the prefetchw optimization makes sense here. IHMO just drop it in this patch. -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
