I picked up a bunch of the pieces from wayland's version:

https://gitlab.freedesktop.org/wayland/wayland/blob/master/CONTRIBUTING.md

The weston one is fairly similar. Then I rather massively trimmed it down since in reality libdrm is a bit a dumping ground with very few real rules. The commit rights and CoC sections I've copied verbatim from igt respectively drm-misc. Weston/Wayland only differ in their pick of how many patches you need (10 instead of 5). I think for libdrm this is supremely relevant, since most everyone will get their commit rights by contributing already to the kernel or mesa and having commit rights there already.

Anyway, I figured this is good to get the rules documented, even if there's mostly not many rules.

Note: This references maintainers in a MAINTAINERS file, which needs to be created first.

Note: With the gitlab migration the entire commit rights process is still a bit up in the air. But gitlab commit rights and roles are hierarchical, so we can do libdrm-only maintainer/commiter roles ("Owner" and "Developer" in gitlab-speak). This should avoid conflating libdrm roles with mesa roles, useful for those pushing to libdrm as primarily kernel contributors.

v2: Comments from Emil: - Recommend subject prefix. - Fix copypaste fumbles, this isn't igt/wayland ...

v3: Comments from Marek: - libdrm moved to mesa, update the document. Atm the entire account request situation is entirely not clear for gitlab and mesa projects, so that's a bit up in the air. Also, should probably send an announcement to dri-devel@, which didn't happen. - amd folks don't submit their patches to dri-devel, document that. Probably applies to other drivers too.

v4: Comments from Rob: - Also include kernel/userspace in the commit counts criteria, due to libdrm's special role as a glue library.

v5: Summarize the irc discussion on gitlab roles in the commit message a bit.

v6: Some grammer stuff from Eric E.

v7: Use --local in git config (Eric E.)

Cc: Dave Airlie airlied@gmail.com Cc: Michel Dänzer michel@daenzer.net Cc: Emil Velikov emil.velikov@collabora.com Cc: Marek Olšák marek.olsak@amd.com Cc: Rob Clark robdclark@gmail.com Cc: Eric Engestrom eric.engestrom@intel.com Reviewed-by: Rob Clark robdclark@gmail.com (v4) Reviewed-by: Eric Engestrom eric.engestrom@intel.com (v6) Acked-by: Emil Velikov emil.l.velikov@gmail.com (v6) Acked-by: Marek Olšák marek.olsak@amd.com (v5) References: https://gitlab.freedesktop.org/wayland/weston/blob/master/CONTRIBUTING.md References: https://01.org/linuxgraphics/gfx-docs/maintainer-tools/drm-misc.html#commit-... References: https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/CONTRIBUTING#n54 Signed-off-by: Daniel Vetter daniel.vetter@intel.com --- CONTRIBUTING | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 CONTRIBUTING

diff --git a/CONTRIBUTING b/CONTRIBUTING new file mode 100644 index 000000000000..96f1e4fb0108 --- /dev/null +++ b/CONTRIBUTING @@ -0,0 +1,105 @@ +Contributing to libdrm +====================== + +Submitting Patches +------------------ + +Patches should be sent to dri-devel@lists.freedesktop.org, using git +send-email. For patches only touching driver specific code one of the driver +mailing lists (like amd-gfx@lists.freedesktop.org) is also appropriate. See git +documentation for help: + +http://git-scm.com/documentation + +Since dri-devel is a very busy mailing list please use --subject-prefix="PATCH +libdrm" to make it easier to find libdrm patches. This is best done by running + + git config --local format.subjectprefix "PATCH libdrm" + +The first line of a commit message should contain a prefix indicating what part +is affected by the patch followed by one sentence that describes the change. For +examples: + + amdgpu: Use uint32_t i in amdgpu_find_bo_by_cpu_mapping + +The body of the commit message should describe what the patch changes and why, +and also note any particular side effects. For a recommended reading on +writing commit messages, see: + +http://who-t.blogspot.de/2009/12/on-commit-messages.html + +Your patches should also include a Signed-off-by line with your name and email +address. If you're not the patch's original author, you should also gather +S-o-b's by them (and/or whomever gave the patch to you.) The significance of +this is that it certifies that you created the patch, that it was created under +an appropriate open source license, or provided to you under those terms. This +lets us indicate a chain of responsibility for the copyright status of the code. +For more details: + +https://developercertificate.org/ + +We won't reject patches that lack S-o-b, but it is strongly recommended. + +Review and Merging +------------------ + +Patches should have at least one positive review (Reviewed-by: tag) or +indication of approval (Acked-by: tag) before merging. For any code shared +between drivers this is mandatory. + +Please note that kernel/userspace API header files have special rules, see +include/drm/README. + +Coding style in the project loosely follows the CodingStyle of the linux kernel: + +https://www.kernel.org/doc/html/latest/process/coding-style.html?highlight=c... + +Commit Rights +------------- + +Commit rights will be granted to anyone who requests them and fulfills the +below criteria: + +- Submitted a few (5-10 as a rule of thumb) non-trivial (not just simple + spelling fixes and whitespace adjustment) patches that have been merged + already. Since libdrm is just a glue library between the kernel and userspace + drivers, merged patches to those components also count towards the commit + criteria. + +- Are actively participating on discussions about their work (on the mailing + list or IRC). This should not be interpreted as a requirement to review other + peoples patches but just make sure that patch submission isn't one-way + communication. Cross-review is still highly encouraged. + +- Will be regularly contributing further patches. This includes regular + contributors to other parts of the open source graphics stack who only + do the oddball rare patch within libdrm itself. + +- Agrees to use their commit rights in accordance with the documented merge + criteria, tools, and processes. + +To apply for commit rights ("Developer" role in gitlab) send a mail to +dri-devel@lists.freedesktop.org and please ping the maintainers if your request +is stuck. + +Committers are encouraged to request their commit rights get removed when they +no longer contribute to the project. Commit rights will be reinstated when they +come back to the project. + +Maintainers and committers should encourage contributors to request commit +rights, as especially junior contributors tend to underestimate their skills. + +Code of Conduct +--------------- + +Please be aware the fd.o Code of Conduct also applies to libdrm: + +https://www.freedesktop.org/wiki/CodeOfConduct/ + +See the gitlab project owners for contact details of the libdrm maintainers. + +Abuse of commit rights, like engaging in commit fights or willfully pushing +patches that violate the documented merge criteria, will also be handled through +the Code of Conduct enforcement process. + +Happy hacking!