> On Fri, 2005-12-16 at 15:58 -0500, Benjamin LaHaise wrote: > > On Fri, Dec 16, 2005 at 12:59:57PM -0800, Joe Perches wrote: > > > How about moving this into a helper function and calling it from > > > alloc_skb_from_cache too? > > > > The previous patch deleted alloc_skb_from_cache(), which wasn't > > referenced from anywhere in the tree. > > Ian, is this still used?
Yep, very much so: it's a big performance win for Xen. BTW: We're planing on splitting out more xen patches and posting them to lkml over the next few weeks -- We've just all been working flat out to get our own release out (Xen 3.0.0 shipped last week). You can see the current state of the xen 'subarch' tree for i386/x86_64 by visting: http://xenbits.xensource.com/ext/linux-2.6-merge.hg Best, Ian > from the 2.6.11 changelog: > > <[EMAIL PROTECTED]> > [NET]: Add alloc_skb_from_cache. > > This serves two purposes: firstly, we like to allocate > page-sized skbs > as this means we zero-copy transfer of network buffers > between guest > operating systems. Secondly, it enables us to have a > cache of pages > that have been used for network buffers that we can be > more lax about > scrubbing when they change VM ownership (since they > could be sniffed on > the wire). > > Signed-off-by: David S. Miller <[EMAIL PROTECTED]> > > - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
