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Message-ID: <tkrat.b7e388635b69af34@s5r6.in-berlin.de>
Date: Fri, 15 Jan 2010 13:23:51 +0100 (CET)
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: Greg Kroah-Hartman <greg@...ah.com>
cc: Randy Dunlap <rdunlap@...otime.net>, Joe Perches <joe@...ches.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Alan Cox <alan@...rguk.ukuu.org.uk>,
Loïc Grenié <loic.grenie@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH update] HOWTO: Updates on subsystem trees, patchwork, -next
(vs. -mm)
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.
Acked-by: Randy Dunlap <rdunlap@...otime.net>
Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
---
On 15 Jan, Loïc Grenié wrote:
>> +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
>
> There is a small typo "on the on".
Thanks for the proofreading; fixed now.
Documentation/HOWTO | 113 ++++++++++++++++----------------------------------
1 files changed, 36 insertions(+), 77 deletions(-)
diff --git a/Documentation/HOWTO b/Documentation/HOWTO
index 8495fc9..f5395af 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 +293,43 @@ 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. Many
+of them can be browsed at http://git.kernel.org/.
+
+Before a proposed patch is committed to such a subsystem tree, it is
+subject to review which primarily happens on mailing lists (see the
+respective section below). For several kernel subsystems, this 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/
--
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