On Sunday 22 July 2007 01:16:42 Oleg Verych wrote: > * From: Andi Kleen <[EMAIL PROTECTED]> > * Date: Thu, 19 Jul 2007 11:54:53 +0200 (CEST) > > > > Jan asked to always use the builtin memcpy on gcc 4.3 mainline because > > it should generate better code than the old macro. Let's try it. > > Unfortunately such info is hard to find. The [EMAIL PROTECTED] list is > empty. So, let me ask how this memcpy relates to recently submitted > for glibc one [0]?
It doesn't relate at all. The kernel still uses its own memcpy. Note that a lot of the traditional memcpy optimizations (like WC copies) are pointless in kernel space because the kernel rarely deals with continuous memory areas larger than a 4K page. The only difference from the patch is that instead of using an own heuristic when to use an out of line memcpy trust gcc's heuristic. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
