On Fri, 23 Aug 2013, Joonsoo Kim wrote: > On Thu, Aug 22, 2013 at 05:53:00PM +0000, Christoph Lameter wrote: > > On Thu, 22 Aug 2013, Joonsoo Kim wrote: > > > > > We can get cachep using page in struct slab_rcu, so remove it. > > > > Ok but this means that we need to touch struct page. Additional cacheline > > in cache footprint. > > In following patch, we overload RCU_HEAD to LRU of struct page and > also overload struct slab to struct page. So there is no > additional cacheline footprint at final stage.
If you do not use rcu (standard case) then you have an additional cacheline. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
