From owner-cvs-all@FreeBSD.ORG Mon Aug 14 20:56:14 2006 Return-Path: X-Original-To: cvs-all@freebsd.org Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2A30A16A4DD; Mon, 14 Aug 2006 20:56:14 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (66-23-211-162.clients.speedfactory.net [66.23.211.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8E3DE43D45; Mon, 14 Aug 2006 20:56:13 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from localhost.corp.yahoo.com (john@localhost [127.0.0.1]) (authenticated bits=0) by server.baldwin.cx (8.13.6/8.13.6) with ESMTP id k7EKuAGJ017396; Mon, 14 Aug 2006 16:56:11 -0400 (EDT) (envelope-from jhb@freebsd.org) From: John Baldwin To: "Matt Reimer" Date: Mon, 14 Aug 2006 16:47:24 -0400 User-Agent: KMail/1.9.1 References: <200608140150.k7E1osuf005683@repoman.freebsd.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200608141647.25538.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]); Mon, 14 Aug 2006 16:56:11 -0400 (EDT) X-Virus-Scanned: ClamAV 0.88.3/1660/Mon Aug 14 11:42:28 2006 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.3 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org, Pyun YongHyeon Subject: Re: cvs commit: src/sys/dev/em if_em.c if_em.h X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Aug 2006 20:56:14 -0000 On Monday 14 August 2006 16:30, Matt Reimer wrote: > On 8/13/06, Pyun YongHyeon wrote: > > yongari 2006-08-14 01:50:54 UTC > > > > FreeBSD src repository > > > > Modified files: > > sys/dev/em if_em.c if_em.h > > Log: > > Overhaul Rx path to recover from mbuf cluster allocation failure. > > o Create one more spare DMA map for Rx handler to recover from > > bus_dmamap_load_mbuf_sg(9) failure. > > o Make sure to update status bit in Rx descriptors even if we failed > > to allocate a new buffer. Previously it resulted in stuck condition > > and em_handle_rxtx task took up all available CPU cycles. > [snip] > > Is it possible that the RELENG_4 if_em driver would suffer from the > same problems, particularly the stuck/CPU-chewing problem? It doesn't use bus_dma. -- John Baldwin