From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759256AbXGCHMw (ORCPT ); Tue, 3 Jul 2007 03:12:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756657AbXGCHMn (ORCPT ); Tue, 3 Jul 2007 03:12:43 -0400 Received: from smtp-out001.kontent.com ([81.88.40.215]:34285 "EHLO smtp-out.kontent.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756465AbXGCHMm convert rfc822-to-8bit (ORCPT ); Tue, 3 Jul 2007 03:12:42 -0400 From: Oliver Neukum To: Greg KH Subject: Re: [linux-usb-devel] [PATCH 3/4] usb: allocated usb releated dma buffer with?kmalloc_node Date: Tue, 3 Jul 2007 09:12:39 +0200 User-Agent: KMail/1.9.7 Cc: linux-usb-devel@lists.sourceforge.net, Yinghai Lu , Linux Kernel Mailing List , Andrew Morton , Andi Kleen References: <200706291326.43563.yinghai.lu@sun.com> <200707030823.07815.oliver@neukum.org> <20070703070312.GA19924@kroah.com> In-Reply-To: <20070703070312.GA19924@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200707030912.40185.oliver@neukum.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Am Dienstag, 3. Juli 2007 schrieb Greg KH: > > > Ok, so two drivers might need this, but not the whole usb core, right? > > > > If those two drivers need the extended allocator, why not use it where > > it is beneficial, even if the benefit is small? > > What is the benefit?  Speed isn't an issue here, so what is? Speed is always an issue. Every cycle used in the kernel is lost to user space. Regards Oliver