From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Date: Thu, 19 May 2011 12:05:31 -0700 > Added davem, benh and rmk explicitly - I think you're on linux-arch, > but still.. You may have machines that like prefetch more, although I > think the "pollute the L1 cache" issue means that even if you don't > have the NULL pointer microtrap issue you'll still find this actually > performs better.. It's been my experience that prefetch hurts more than it ever helps for these list traversal functions. In fact I had been looking at some assembler output for files in the networking and noticed how all of these list prefetch turds just take up I-cache space. Please kill them off, you have my utmost support :-) Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
