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Date: Thu, 14 Jan 2010 15:36:16 -0800 From: Randy Dunlap <rdunlap@...otime.net> To: Stefan Richter <stefanr@...6.in-berlin.de> Cc: Greg Kroah-Hartman <greg@...ah.com>, Joe Perches <joe@...ches.com>, Andrew Morton <akpm@...ux-foundation.org>, Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org Subject: Re: [PATCH] HOWTO: Updates on subsystem trees, patchwork, -next (vs. -mm) On Thu, 14 Jan 2010 23:39:46 +0100 (CET) Stefan Richter wrote: > One of the roles which -mm fulfilled some time ago (to offer an > integration testing ground) has been taken over by -next. This is still > news to Documentation/HOWTO, so mention it there. > > Also add a word on how patchwork is used to track patches as they make > their way into subsystem trees. Remove some arbitrary links to > subsystem repositories; they can all be found in the MAINTAINERS > database. > > Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de> Hi Stefan, I like the patch, but since that particular file is maintained by GregKH, I'll leave it to him to merge it. Acked-by: Randy Dunlap <rdunlap@...otime.net> Thanks. > --- > > This supersedes > [PATCH] HOWTO: Point to patchwork.kernel.org and patchwork.ozlabs.org > > Documentation/HOWTO | 112 ++++++++++++++++----------------------------------- > 1 files changed, 35 insertions(+), 77 deletions(-) > > diff --git a/Documentation/HOWTO b/Documentation/HOWTO > index 8495fc9..085d281 100644 > --- a/Documentation/HOWTO > +++ b/Documentation/HOWTO > @@ -221,8 +221,8 @@ branches. These different branches are: > - main 2.6.x kernel tree > - 2.6.x.y -stable kernel tree > - 2.6.x -git kernel patches > - - 2.6.x -mm kernel patches > - subsystem specific kernel trees and patches > + - the 2.6.x -next kernel tree for integration tests > > 2.6.x kernel tree > ----------------- > @@ -232,7 +232,7 @@ process is as follows: > - As soon as a new kernel is released a two weeks window is open, > during this period of time maintainers can submit big diffs to > Linus, usually the patches that have already been included in the > - -mm kernel for a few weeks. The preferred way to submit big changes > + -next kernel for a few weeks. The preferred way to submit big changes > is using git (the kernel's source management tool, more information > can be found at http://git.or.cz/) but plain patches are also just > fine. > @@ -293,84 +293,42 @@ daily and represent the current state of Linus' tree. They are more > experimental than -rc kernels since they are generated automatically > without even a cursory glance to see if they are sane. > > -2.6.x -mm kernel patches > ------------------------- > -These are experimental kernel patches released by Andrew Morton. Andrew > -takes all of the different subsystem kernel trees and patches and mushes > -them together, along with a lot of patches that have been plucked from > -the linux-kernel mailing list. This tree serves as a proving ground for > -new features and patches. Once a patch has proved its worth in -mm for > -a while Andrew or the subsystem maintainer pushes it on to Linus for > -inclusion in mainline. > - > -It is heavily encouraged that all new patches get tested in the -mm tree > -before they are sent to Linus for inclusion in the main kernel tree. Code > -which does not make an appearance in -mm before the opening of the merge > -window will prove hard to merge into the mainline. > - > -These kernels are not appropriate for use on systems that are supposed > -to be stable and they are more risky to run than any of the other > -branches. > - > -If you wish to help out with the kernel development process, please test > -and use these kernel releases and provide feedback to the linux-kernel > -mailing list if you have any problems, and if everything works properly. > - > -In addition to all the other experimental patches, these kernels usually > -also contain any changes in the mainline -git kernels available at the > -time of release. > - > -The -mm kernels are not released on a fixed schedule, but usually a few > --mm kernels are released in between each -rc kernel (1 to 3 is common). > - > Subsystem Specific kernel trees and patches > ------------------------------------------- > -A number of the different kernel subsystem developers expose their > -development trees so that others can see what is happening in the > -different areas of the kernel. These trees are pulled into the -mm > -kernel releases as described above. > - > -Here is a list of some of the different kernel trees available: > - git trees: > - - Kbuild development tree, Sam Ravnborg <sam@...nborg.org> > - git.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild.git > - > - - ACPI development tree, Len Brown <len.brown@...el.com> > - git.kernel.org:/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git > - > - - Block development tree, Jens Axboe <jens.axboe@...cle.com> > - git.kernel.org:/pub/scm/linux/kernel/git/axboe/linux-2.6-block.git > - > - - DRM development tree, Dave Airlie <airlied@...ux.ie> > - git.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6.git > - > - - ia64 development tree, Tony Luck <tony.luck@...el.com> > - git.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6.git > - > - - infiniband, Roland Dreier <rolandd@...co.com> > - git.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git > - > - - libata, Jeff Garzik <jgarzik@...ox.com> > - git.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git > - > - - network drivers, Jeff Garzik <jgarzik@...ox.com> > - git.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6.git > - > - - pcmcia, Dominik Brodowski <linux@...inikbrodowski.net> > - git.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6.git > - > - - SCSI, James Bottomley <James.Bottomley@...senpartnership.com> > - git.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git > - > - - x86, Ingo Molnar <mingo@...e.hu> > - git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git > - > - quilt trees: > - - USB, Driver Core, and I2C, Greg Kroah-Hartman <gregkh@...e.de> > - kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/ > +The maintainers of the various kernel subsystems --- and also many > +kernel subsystem developers --- expose their current state of > +development in source repositories. That way, others can see what is > +happening in the different areas of the kernel. In areas where > +development is rapid, a developer may be asked to base his submissions > +onto such a subsystem kernel tree so that conflicts between the > +submission and other already ongoing work are avoided. > + > +Most of these repositories are git trees, but there are also other SCMs > +in use, or patch queues being published as quilt series. Addresses of > +these subsystem repositories are listed in the MAINTAINERS file. > + > +Before a proposed patch is committed to such a subsystem tree, it is > +subject to review which primarily happens on the on mailing lists (see > +the respective section below). For several kernel subsystems, this > +submission and review process is tracked with the tool patchwork. > +Patchwork offers a web interface which shows patch postings, any > +comments on a patch or revisions to it, and maintainers can mark patches > +as under review, accepted, or rejected. Most of these patchwork sites > +are listed at http://patchwork.kernel.org/ or http://patchwork.ozlabs.org/. > + > +2.6.x -next kernel tree for integration tests > +--------------------------------------------- > +Before updates from subsystem trees are merged into the mainline 2.6.x > +tree, they need to be integration-tested. For this purpose, a special > +testing repository exists into which virtually all subsystem trees are > +pulled on an almost daily basis: > + http://git.kernel.org/?p=linux/kernel/git/sfr/linux-next.git > + http://linux.f-seidel.de/linux-next/pmwiki/ > + > +This way, the -next kernel gives a summary outlook onto what will be > +expected to go into the mainline kernel at the next merge period. > +Adventurous testers are very welcome to runtime-test the -next kernel. > > - Other kernel trees can be found listed at http://git.kernel.org/ and in > - the MAINTAINERS file. > > Bug Reporting > ------------- > > -- > Stefan Richter > -=====-==-=- ---= -===- > http://arcgraph.de/sr/ > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ --- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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