Date: Wed, 14 Jan 2015 11:21:52 -0500 (EST) From: Salvage Drive <info@salvagedrive.com> To: arch@freebsd.org Subject: Special Package Deal 4 Cars Message-ID: <1119764708435.1115603422701.1254712288.0.241121JL.1002@scheduler.constantcontact.com>
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HOT PACKAGE DEAL!!! 4 Cars for ONLY $9,999 Selling our in-house inventory No Auction Fees No Salvage Drive Fees ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2009 Hyundai Elantra Salvage Title Odometer: 47,136 miles ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2010 Kia Sportage Salvage Title Odometer: 85,328 miles ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2011 Hyundai Santa Fe Salvage Title Odometer: 75,470 miles ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2009 Toyota Corolla Salvage Title Odometer: n/a ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: These vehicles are sold as is and where is, without warranty. 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Update Profile/Email Address http://visitor.constantcontact.com/do?p=oo&m=001byRd3MOrEzrBc_e8AIN5jg%3D%3D&ch=8b131940-9839-11e4-9cca-d4ae528eade9&ca=bc46b500-0079-4568-a2df-8c3cbcd0be98 Instant removal with SafeUnsubscribe(TM) http://visitor.constantcontact.com/do?p=un&m=001byRd3MOrEzrBc_e8AIN5jg%3D%3D&ch=8b131940-9839-11e4-9cca-d4ae528eade9&ca=bc46b500-0079-4568-a2df-8c3cbcd0be98 Privacy Policy: http://ui.constantcontact.com/roving/CCPrivacyPolicy.jsp Online Marketing by Constant Contact(R) www.constantcontact.com Salvage Drive, Inc | 217 Broadway | Suite 515 | New York | NY | 10007 From owner-freebsd-arch@FreeBSD.ORG Wed Jan 14 23:56:23 2015 Return-Path: <owner-freebsd-arch@FreeBSD.ORG> Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 9ED5EE11 for <arch@freebsd.org>; Wed, 14 Jan 2015 23:56:23 +0000 (UTC) Received: from mail-pd0-f182.google.com (mail-pd0-f182.google.com [209.85.192.182]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6A2AA3EE for <arch@freebsd.org>; Wed, 14 Jan 2015 23:56:23 +0000 (UTC) Received: by mail-pd0-f182.google.com with SMTP id y10so1377802pdj.13 for <arch@freebsd.org>; Wed, 14 Jan 2015 15:56:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d 100.net; s 130820; h=x-gm-message-state:sender:subject:mime-version:content-type:from :in-reply-to:date:cc:message-id:references:to; bh=VHELp2LLMnbh7EUNsX+NOw0vjTq9bdpviLVZV8J1cRY=; b=CLVn4OMteX33i4TkvYMVDgyOPmQXoaUa4er6C5iOITeamb4CUMqMch98hq8LOW2ds2 hz8F03qmDrMxBrgaqu5TKSZaYMAXfR/tzr1Vt/Tv22Zu6kK4MCpDbO34/aqnAci1waOe 75/dklU1zL/Sg6y3hJwJoRI5ZQckG+Vk1aHPTjI+nLSkFDNhHdYiujzKRFazIxpcajlT /x2AJ9JWrh8bv12f+zAtnWBe8t2H8NShTPwNso4ERwqO8vDHR/qfc7zJKbQEPoLp6oBo Su0U3+OTwtQztqn+LYTfAQhJ5AZtLGWbeVtO/vwddaTKJrFdIZCLX5rFoh8de4O7HkNm SxiA=X-Gm-Message-State: ALoCoQnUMVg1UVVkQGv6KCpY2XuYIHFQS29CmcsuzrZL0HRxPs0GmUelFL9H29DZP68sGtv0XwyD X-Received: by 10.70.103.197 with SMTP id fy5mr9599565pdb.131.1421279782576; Wed, 14 Jan 2015 15:56:22 -0800 (PST) Received: from [10.64.25.14] ([69.53.236.236]) by mx.google.com with ESMTPSA id pf10sm20655309pbc.82.2015.01.14.15.56.20 (version=TLSv1 cipher�DHE-RSA-RC4-SHA bits8/128); Wed, 14 Jan 2015 15:56:21 -0800 (PST) Sender: Warner Losh <wlosh@bsdimp.com> Subject: Re: devctl(8): A device control utility Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Content-Type: multipart/signed; boundary="Apple-Mail=_724ABB64-B20B-4A5C-8428-9E19B43BA4A9"; protocol="application/pgp-signature"; micalg=pgp-sha512 X-Pgp-Agent: GPGMail 2.5b3 From: Warner Losh <imp@bsdimp.com> In-Reply-To: <54B44448.1090901@FreeBSD.org> Date: Wed, 14 Jan 2015 16:56:18 -0700 Message-Id: <E3CAE124-1D8E-4A89-8113-D8301436BFE9@bsdimp.com> References: <3200196.9ZgXApgRdA@ralph.baldwin.cx> <54AAF60A.9070609@FreeBSD.org> <54AAFAEB.2090505@selasky.org> <6155572.yV5dxPJznD@ralph.baldwin.cx> <54B3F349.9050703@FreeBSD.org> <11219A27-4C5B-4429-8847-3E54F9C4CD1E@bsdimp.com> <54B44448.1090901@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> X-Mailer: Apple Mail (2.1993) Cc: Hans Petter Selasky <hps@selasky.org>, arch@freebsd.org X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-arch>, <mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch/>; List-Post: <mailto:freebsd-arch@freebsd.org> List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>, <mailto:freebsd-arch-request@freebsd.org?subject=subscribe> X-List-Received-Date: Wed, 14 Jan 2015 23:56:23 -0000 --Apple-Mail=_724ABB64-B20B-4A5C-8428-9E19B43BA4A9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Jan 12, 2015, at 3:01 PM, John Baldwin <jhb@FreeBSD.org> wrote: > > On 1/12/15 12:01 PM, Warner Losh wrote: >> >>> On Jan 12, 2015, at 9:16 AM, John Baldwin <jhb@FreeBSD.org> wrote: >>> >>> On 1/5/15 4:18 PM, John Baldwin wrote: >>>> On Monday, January 05, 2015 09:58:19 PM Hans Petter Selasky wrote: >>>>> On 01/05/15 21:37, John Baldwin wrote: >>>>>> On 1/5/15 3:13 PM, Hans Petter Selasky wrote: >>>>>>> On 01/05/15 21:01, John Baldwin wrote: >>>>>>>> The devctl(8) utility is then a thin wrapper around libdevctl (and >>>>>>>> does not >>>>>>>> yet have a manpage). >>>>>>>> >>>>>>>> Do folks have any feedback? >>>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> In the USB area attach and detach must be synchronized to the USB stack >>>>>>> and "usbconfig -d X.Y set_config Z" or "usbconfig -d X.Y reset" should >>>>>>> be used to avoid races attaching and detaching drivers! >>>>>> >>>>>> I think this points to one or more missing bus methods so that the bus >>>>>> can hook into device_probe_and_attach() to reset a device as needed. >>>>>> (e.g. if you had bus_probe_started / bus_probe_finished and possibly >>>>>> similar methods for attach. PCI could use a bus_attach_finished() >>>>>> callback so that it could clean up any dangling resources and possibly >>>>>> power down on a failed attach the way it does in bus_child_detached as >>>>>> well). >>>>> >>>>> Hi, >>>>> >>>>> USB has its own threads to allocate/free devices. Another problem is how >>>>> to atomically get a reference count across multiple layers like PCI and >>>>> USB. It doesn't allow probe/attach when called from outside these threads. >>>> >>>> That just means you need to use some locks. :) Cardbus also uses an event >>>> thread to handle auto-attach of devices when it detected a card change event, >>>> but that doesn't prevent it from servicing an ioctl request. >>> >>> Another option btw would be to add bus methods that wrap probe and >>> attach (rather than pre and post event hooks). I wish bus_add_child() >>> were done this way such that device_add_child_ordered() were renamed to >>> bus_generic_add_child() (and was the default add_child method) and that >>> device_add_child_ordered() called 'BUS_ADD_CHILD()' so that >>> 'device_add_child()' was the proper public API (instead of exposing >>> BUS_ADD_CHILD()). Similarly, I think that 'device_attach()' and >>> 'device_probe_and_attach()' should be the public API and that one way or >>> another we should add hooks to allow bus drivers to modify their >>> behavior if needed. However, they should be fine for devctl ioctls to >>> invoke as well as other kernel bits. >> >> When I was doing CardBus and PC Card I wished for similar things. Then >> I realized I didn’t need them because as the bus author, I know when these >> events happened and could take appropriate actions for the bus. I didn’t have >> that atomic access issues though, since as the bus author I also controlled how >> and when mutexes were taken out and when I allowed access to the bus. I >> only used mutexes in CardBus and PC Card because most of the sleeps were >> short, but other ways to do locking are quite possible... > > I think the problem here is that devctl introduces events that happen > without the bus's knowledge. When we did the kludge sysctl power stuff for cardbus (which was never committed), we sent a message to the bus to tell it to do the power off and cope with whatever else was needed. There were times that it couldn’t comply, iirc, so this ‘command’ allowed errors to be returned for things that were forbidden / not allowed for some reason at the time rather than getting a message that this thing happened and we had to mop up now. Warner --Apple-Mail=_724ABB64-B20B-4A5C-8428-9E19B43BA4A9 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJUtwIjAAoJEGwc0Sh9sBEAC68QANxHxKO4hnx82BojE9fMVi6/ /oPh7toXq1YqLLq4QwMBH2izkL+5XjwHQbe0EGItQXKVasIwiIu8Bf5fIv04FIfy 5++do7LVUE1yA3LBHdiOVnFP5eXQ59kYR+cIwAEjpA1mevt8Psqd8frYlzwdgj2z pFw1OAil4LXWG/ujAzNP60iP6Pxu5f4offHk12Sqn22x3tHpN6cIASW+h4rmPLEM tBhhc0AbpnunP8MCEBy/BrZi/jgKvQOh1PTpG0Xo4F4Uo4ZbG0absy8cut/+s4dq 9O+0UAXabNN68hLUqLtl92SnLNv89gl3GcE6NeUAF0+L7JjYexZBVuNQmZZpGyaI ms9t8K/PxzLKxTmFiwgnzzQaox8/PzrXb9ffkx4stFG8K1mzoRkl6A/qFNjK0x1J RTdzYbjyBVVGxlNkXYBmyCbN0MBoa53pSIkx40YF1z1+MI579XdJfLxqG7vWlS/R 2BMxYakT2ORHunX0U9JEG9psHGOa0t6GCskEhNv6yJkwgCLAHBjTrJKMusQIgf9z HdYJTc4XDNSJi/N5AKAvTwYaxoO5b3tta9//elSSqQePA3VtVfo1YkiOR6Mhxe46 VevVt6RP405SiUzoJ574iHuLI3X1BoGrVAwZQRyQ185BelUWhso12Tuzvp0Vc6Bw aCQI7s7kIzNIhu6mCWiW =MGb6 -----END PGP SIGNATURE----- --Apple-Mail=_724ABB64-B20B-4A5C-8428-9E19B43BA4A9--help
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