Date: Mon, 28 Dec 2015 11:14:15 -0700 (MST) From: Warren Block <wblock@wonkity.com> To: =?ISO-8859-15?Q?Jean-S=E9bastien_P=E9dron?= <dumbbell@FreeBSD.org> Cc: "freebsd-x11@freebsd.org" <freebsd-x11@FreeBSD.org> Subject: Re: Contributing to the kernel video drivers Message-ID: <alpine.BSF.2.20.1512281038560.73882@wonkity.com> In-Reply-To: <5681731A.5090909@FreeBSD.org> References: <5681731A.5090909@FreeBSD.org>
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On Mon, 28 Dec 2015, Jean-Sébastien Pédron wrote: > I believe the milestones should be versions of Linux. For instance, the > next one on the road is Linux 3.9. We have DRM core and two drivers to > sync and I think we should try to keep the whole DRM in sync (and not > have i915 at 3.15 and Radeon at 3.13 for instance). Until now, I updated > our DRM on a file-by-file basis: I took a file from Linux 3.8 and ported > it to FreeBSD from scratch, by keeping an eye on the current FreeBSD > copy. Therefore, I jumped from whatever version we were at straight to > 3.8, at the high cost of an unbuildable kernel before the very end. > > Another approach is to update on a commit-by-commit basis: we take all > commits between 3.8 and 3.9 and apply them in order. The downside is > that we could port code which is rewritten or removed 10 commits later. This commit-by-commit approach is how FreeBSD documentation translation has been traditionally done. There are a couple of problems with it beyond just wasted work. It makes prioritizing important patches difficult. Consider a patch to fix some really important bug that is needed now. It can still be done now even if there are 100 upstream commits in front of it, but will make tracking and patching more difficult until those 100 commits are caught up. Tracking by upstream commits also implies that most updates will be the same scale as the upstream commits. A single massive upstream commit can put a hold on the process until it is completely ported. From owner-freebsd-x11@freebsd.org Mon Dec 28 21:22:29 2015 Return-Path: <owner-freebsd-x11@freebsd.org> Delivered-To: freebsd-x11@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 595F5A54D94 for <freebsd-x11@mailman.ysv.freebsd.org>; Mon, 28 Dec 2015 21:22:29 +0000 (UTC) (envelope-from jean-sebastien.pedron@dumbbell.fr) Received: from mail.made4.biz (mail.made4.biz [IPv6:2001:41d0:2:c018::1:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 22ED717DF for <freebsd-x11@freebsd.org>; Mon, 28 Dec 2015 21:22:28 +0000 (UTC) (envelope-from jean-sebastien.pedron@dumbbell.fr) Received: from 141.7.19.93.rev.sfr.net ([93.19.7.141] helo=magellan.dumbbell.fr) by mail.made4.biz with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86 (FreeBSD)) (envelope-from <jean-sebastien.pedron@dumbbell.fr>) id 1aDfFK-000AkX-Vr for freebsd-x11@freebsd.org; Mon, 28 Dec 2015 22:22:27 +0100 Subject: Re: Trying to run Broadwell To: freebsd-x11@freebsd.org References: <20151203174008.GA98937@becker.bs.l> <alpine.BSF.2.20.1512031338070.24164@wonkity.com> <20151203222137.GA1111@becker.bs.l> <CA+tpaK21cSbR+ytGyc3d4_FotUJY3WjSbOasgkfyVjUt00Y6Og@mail.gmail.com> <20151207133403.GB73105@becker.bs.l> <20151208173419.GA96583@becker.bs.l> <20151215223306.GA31657@becker.bs.l> <56746186.7000107@dumbbell.fr> <20151221160627.GA32211@becker.bs.l> From: =?UTF-8?Q?Jean-S=c3=a9bastien_P=c3=a9dron?= <jean-sebastien.pedron@dumbbell.fr> Message-ID: <5681A812.4090701@dumbbell.fr> Date: Mon, 28 Dec 2015 22:22:26 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: <20151221160627.GA32211@becker.bs.l> Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="s0xcS33hnjHI6Txdmvetgf0KdeUsGoB3B" X-BeenThere: freebsd-x11@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: X11 on FreeBSD -- maintaining and support <freebsd-x11.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-x11>, <mailto:freebsd-x11-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-x11/>; List-Post: <mailto:freebsd-x11@freebsd.org> List-Help: <mailto:freebsd-x11-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-x11>, <mailto:freebsd-x11-request@freebsd.org?subject=subscribe> X-List-Received-Date: Mon, 28 Dec 2015 21:22:29 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --s0xcS33hnjHI6Txdmvetgf0KdeUsGoB3B Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 21/12/2015 17:06, Bertram Scharpf wrote: >> If you prefer to work on bringing new code from Linux, please fork my >> drm-i915-update-38 branch and try to import commits from Linux 3.9. I >> don't know what's the best course of actions: either one commit at a >> time or one file at a time. Are you interested in this task? >=20 > I would like to give it a try. >=20 > Which ist the right repository to import commits/files from? > How do I find the point to start from? Hi! I just started a thread to organize the work. I will add information about file layouts in both Linux and FreeBSD. --=20 Jean-S=C3=A9bastien P=C3=A9dron --s0xcS33hnjHI6Txdmvetgf0KdeUsGoB3B Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJWgagSXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ2NzA4N0ZEMUFFQUUwRTEyREJDNkE2RjAz OUU5OTc2MUE1RkQ5NENDAAoJEDnpl2Gl/ZTM7KEP/1/Pt73uh4EPmpI2Dx7Zecck Neu0YlQojHbbxomzgjxKWdcde/MA0oG6xkbu0wa66VOCzK4l17HqgbPU//AekCgr AD5NPWCxijlRHArHv+yxTyGLzlTCmf4y+IV2xn1vOVhKvLxU3yVtn1YVNIO8f8G0 gb/hhH+X6uqAj5OfypANyz4IxsBltQl+VHvrCVYMvemlqots6cNFt2GU/vN5wvZU Utk0GKMPTGIIRJL6WtVaCquCTKDa5IBcaAflq94SLpnjNzDzIUFUaXv+J1CNVHjm fbK4DGefbZNlj8SDTrFLRoVqv6iQccTkJ3Kgxm2hjkgcrg/8Mpc7JRT1wJRLoMZv ADrThxjHD/FRJmmE+l8rSaWwqNCNtaUVq5OgteFhea1kIwrLl/JPltO9xgpW9g12 4mgxUBLcfshFZjpvGeQpAu93HD5x1o31ag8/IeognTgx2NjOD0Wqhng3lV4XH2rd F2QgX3jI7Fi3nItiVEg64LCBhWnhRsC75P3lgjcrnF4pZsEVpo0oWYWnvFjW5TIm +Crfw81PbYpyCvdR0e+YOq5sdSvxyohjb6OjU2vqWfH19sNOHRwuUqb2bNDb2c60 jjrO7PJvtcLVjY4+Q8yul+b52pKxlzVc4dwIB7LFabJtD/NDWtthFagX6c2M2tVa 9iYme2pj4Si0LOqVSdFa =OMEL -----END PGP SIGNATURE----- --s0xcS33hnjHI6Txdmvetgf0KdeUsGoB3B--
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