On Thu, 2011-05-26 at 22:55 +0200, Eric Dumazet wrote: > Le jeudi 26 mai 2011 Ã 13:24 -0700, Shirley Ma a Ãcrit : > > > I could reduce callback pointer by moving it to *arg, but not desc, > this > > indicates that which buffer DMA hasn't done yet in *arg. > > > I guess you dont need to use skb itself to hold all your states ? > > I understand its convenient for you, but I believe its worth the pain > to > use only one pointer to a (small) object where you put all your stuff. > > Some machines alloc/free millions of skbs per second. > > If/when most skb uses are for userspace zero-copy buffers we can > embbed > your small object in skb itself ;) You are right, w/o this desc, there will be lots of alloc/dealloc in the caller side. To have better performance, maybe I should have changed most skbs to use zero-copy buffers. :) Ok, for now let me try to move it to caller, just leave one pointer *uarg here. Thanks Shirley -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
