Messages in this thread |  | | Date | Mon, 28 Aug 2000 23:07:04 +0200 | From | "Andi Kleen" <> | Subject | Re: newbie question: tcp/ip in kernel |
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On Mon, Aug 28, 2000 at 02:03:25PM -0700, Reto Baettig wrote: > Andi Kleen wrote: > > > > > -) What is the best way to get rid of the copy_from_user memcpy that > > > tcp_do_sendmsg does in that call? > > > > Rewriting the TCP/IP stack and changing all network drivers to get rid > > of the copy. > > :-( Is there an easier way? > > Can I somehow get rid of the lock_kernel in 2.2 kernels (at least for > the sock_sendmsg and sock_rcvmsg calls) so that I can at least use the 2 > Memory buses in our ES40's?
Later 2.2 kernels automatically drop the kernel lock during the copy, so that should just work.
-Andi
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