Re: [Mesa-dev] [PATCH libdrm] Add basic CONTRIBUTING file

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On Wednesday, 2018-08-22 12:51:39 +0200, Daniel Vetter wrote:
> 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.
> 
> Cc: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>
> Cc: Marek Olšák <marek.olsak@xxxxxxx>
> Cc: Rob Clark <robdclark@xxxxxxxxx>
> Cc: Eric Engestrom <eric.engestrom@xxxxxxxxx>
> Reviewed-by: Rob Clark <robdclark@xxxxxxxxx> (v4)
> Reviewed-by: Eric Engestrom <eric.engestrom@xxxxxxxxx> (v6)
> Acked-by: Emil Velikov <emil.l.velikov@xxxxxxxxx> (v6)
> Acked-by: Marek Olšák <marek.olsak@xxxxxxx> (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-rights
> References: https://cgit.freedesktop.org/drm/igt-gpu-tools/tree/CONTRIBUTING#n54
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> ---
>  CONTRIBUTING | 105 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 105 insertions(+)
>  create mode 100644 CONTRIBUTING
> 
> diff --git a/CONTRIBUTING b/CONTRIBUTING
> new file mode 100644
> index 000000000000..6cd09dd069bb
> --- /dev/null
> +++ b/CONTRIBUTING
> @@ -0,0 +1,105 @@
> +Contributing to libdrm
> +======================
> +
> +Submitting Patches
> +------------------
> +
> +Patches should be sent to dri-devel@xxxxxxxxxxxxxxxxxxxxx, using git
> +send-email. For patches only touching driver specific code one of the driver
> +mailing lists (like amd-gfx@xxxxxxxxxxxxxxxxxxxxx) is also appropriate. See git
> +documentation for help:
> +
> +http://git-scm.com/documentation

Actually, just thought about something we could add here:

"
You can set the default address by running:
  $ git config --local sendemail.to dri-devel@xxxxxxxxxxxxxxxxxxxxx

You can still override it when sending your patch by passing `--to`:
  $ git send-email -1 --to amd-gfx@xxxxxxxxxxxxxxxxxxxxx
"

> +
> +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 format.subjectprefix "PATCH libdrm"

I would also recommend adding `--local` here to avoid people
accidentally running this outside their repo and setting it globally.

> +
> +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=coding%20style
> +
> +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@xxxxxxxxxxxxxxxxxxxxx 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!
> -- 
> 2.18.0
> 
> _______________________________________________
> mesa-dev mailing list
> mesa-dev@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/mesa-dev
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