From owner-cvs-src@FreeBSD.ORG Sun Apr 15 09:57:57 2007 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A3E1F16A400; Sun, 15 Apr 2007 09:57:57 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from cyrus.watson.org (cyrus.watson.org [209.31.154.42]) by mx1.freebsd.org (Postfix) with ESMTP id 75E6913C468; Sun, 15 Apr 2007 09:57:57 +0000 (UTC) (envelope-from rwatson@FreeBSD.org) Received: from fledge.watson.org (fledge.watson.org [209.31.154.41]) by cyrus.watson.org (Postfix) with ESMTP id 2155047FF7; Sun, 15 Apr 2007 05:57:57 -0400 (EDT) Date: Sun, 15 Apr 2007 10:57:56 +0100 (BST) From: Robert Watson X-X-Sender: robert@fledge.watson.org To: Scott Long In-Reply-To: <200704150849.l3F8nKhw040250@repoman.freebsd.org> Message-ID: <20070415105711.T84174@fledge.watson.org> References: <200704150849.l3F8nKhw040250@repoman.freebsd.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/cam cam_ccb.h cam_periph.c cam_periph.h cam_sim.c cam_sim.h cam_xpt.c cam_xpt.h cam_xpt_periph.h src/sys/cam/scsi scsi_cd.c scsi_ch.c scsi_da.c scsi_low.c scsi_pass.c scsi_pt.c scsi_sa.c scsi_ses.c scsi_sg.c ... X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Apr 2007 09:57:57 -0000 On Sun, 15 Apr 2007, Scott Long wrote: > Remove Giant from CAM. Drivers (SIMs) now register a mutex that CAM will > use to synchornize and protect all data objects that are used for that > SIM. Drivers that are not yet MPSAFE register Giant and operate as > usual. RIght now, no drivers are MPSAFE, though a few will be changed > in the coming week as this work settles down. > > The driver API has changed, so all CAM drivers will need to be recompiled. > The userland API has not changed, so tools like camcontrol do not need to > be recompiled. Excellent. This was one of the few remaining serious pieces of non-MPSAFE infrastructure in the kernel. Thanks greatly for doing this work! Robert N M Watson Computer Laboratory University of Cambridge