On Mon, 2015-03-02 at 21:42 +0100, Florian Westphal wrote: > Thats right. Do you think its worth to already move cb[] near the end > of skb and alter build_skb to not clear it anymore? > > Which of the ideas, in your opinion, is worth pursuing first (if any)?
moving cb[] near the end will void my patches to use one cache line per skb in TCP receive queue ( or write queue) 971f10eca186ca tcp: better TCP_SKB_CB layout to reduce cache line misses I have worked a bit (3 months ago) about doing the skb->cb[] selective clearing, but a lot of alloc_skb() users _assume_ it is already cleared. That seemed a lot of work to me, because of the many alloc_skb() variants we have. But definitely worth trying to complete. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
