Re: [RFC] linux-next: replace the DRM trees with a single drm-for-linux-next

[Rodrigo Vivi <rodrigo.vivi@intel.com>]

On Mon, Nov 02, 2026 at 06:07:15PM -0500, Alex Deucher wrote:
> On Mon, Nov 2, 2026 at 1:51 PM Rodrigo Vivi <rodrigo.vivi@intel.com> wrote:
> >
> > Hi folks,
> >
> > We'd like to replace most of the DRM trees in linux-next with a single
> > branch:
> >
> >   https://gitlab.freedesktop.org/drm/tip.git#drm-for-linux-next
> >
> > It replaces these entries:
> >
> >   drm/drm-next, drm/drm-fixes
> >   drm-misc/for-linux-next, drm-misc/for-linux-next-fixes
> >   drm-intel/for-linux-next, drm-intel/for-linux-next-fixes
> >   drm-xe/drm-xe-next
> >   drm-rust/for-linux-next, drm-rust/for-linux-next-fixes
> >   amdgpu (agd5f/linux.git#drm-next)
> >
> > drm-exynos, drm-msm, drm-msm-fixes, drm-msm-lumag, drm-nova and etnaviv
> > are not part of it and stay as they are.
> >
> > The main reason is to reduce the conflict pain that Mark constantly faces.
> > All of them should be handled already when we are rebuilding drm-tip.
> >
> > During this work, I realized that drm-xe is a big culprit for leaking
> > future work without a blackout date from -rc6 to <next>-rc1.
> > So, another quick solution would be to get a drm-xe for-linux-next like
> > the other domains are doing. However, I still believe that this unified
> > one will make Mark's life much easier anyway.
> >
> > The unified branch is rebuilt by dim together with drm-tip. It has all the DRM
> > -fixes, drm-next, -next-fixes and driver -next branches merged, with
> > the conflicts between them already resolved on our side. From -rc6
> > until -rc1 (per Linus' tree) the driver -next branches are left out, so
> > nothing for the following merge window lands early.
> >
> > It contains the DRM fixes too, so it would go where "drm" is today.
> >
> > During the past weeks I have confirmed that the drm blackout period
> > works well on this new branch.
> >
> > The dim changes:
> >
> >   d875049d2b29 dim: build a unified drm-for-linux-next branch
> >   3009867cd318 dim: keep -next branches out of drm-for-linux-next during the freeze
> >   https://gitlab.freedesktop.org/drm/maintainer-tools/-/commits/master
> >
> > AMD:
> > Alex, Christian: linux-next takes amdgpu from
> > agd5f/linux.git#drm-next today, which differs from drm-amdgpu-next in
> > drm-tip. Is drm-amdgpu-next fine for linux-next?
> 
> They should be the same.  I just mirror drm-amdgpu-next to
> agd5f/linux.git#drm-next in case anyone is still looking there.

That's fine. But please let us know your thoughts on either going with
this approach proposed here or with the other approach proposed by
Danilo, where we in xe and you would need to create a for-linux-next
and for-linux-next-fixes.

Both xe and amd are leaking next.next patches into linux-next right now.
And we definitely need to stop that.

Thanks,
Rodrigo.

> 
> Alex
> 
> >
> > All other maintainers, please ack if you are okay with this approach.
> >
> > Mark, you're in Cc for visibility only. Once we have all the acks, I'll
> > send you the formal request. After linux-next switches, we stop
> > updating the old for-linux-next* branches (patch below).
> >
> > Thanks,
> > Rodrigo.
> >
> > ---
> > dim: stop updating the per-repo for-linux-next branches
> >
> > linux-next now pulls the unified drm-for-linux-next branch instead.
> >
> > Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > ---
> >  dim | 53 -----------------------------------------------------
> >  1 file changed, 53 deletions(-)
> >
> > diff --git a/dim b/dim
> > index e3f616b..b3ed8f7 100755
> > --- a/dim
> > +++ b/dim
> > @@ -658,52 +658,6 @@ function dim_range_diff
> >         fi
> >  }
> >
> > -# update for-linux-next* branches
> > -function update_linux_next # branch next next-fixes fixes [for-linux-next] [for-linux-next-fixes]
> > -{
> > -       local branch linux_next linux_next_fixes linux_fixes for_linux_next for_linux_next_fixes repo remote
> > -
> > -       cd $DIM_PREFIX/drm-tip
> > -       branch=$1
> > -       linux_next=$2
> > -       linux_next_fixes=$3
> > -       linux_fixes=$4
> > -       for_linux_next=${5:-for-linux-next}
> > -       for_linux_next_fixes=${6:-for-linux-next-fixes}
> > -
> > -       repo=$(branch_to_repo $branch)
> > -
> > -       if [[ $repo != $(branch_to_repo $linux_next) ]] ; then
> > -               return
> > -       fi
> > -
> > -       remote=$(repo_to_remote $repo)
> > -
> > -       git_fetch_helper $remote
> > -
> > -       if [ -n "$for_linux_next_fixes" ] ; then
> > -               echo -n "Pushing $linux_fixes to $for_linux_next_fixes... "
> > -               git_push $remote +$remote/$linux_fixes:$for_linux_next_fixes
> > -               echo "$DONE_OR_SKIP"
> > -       fi
> > -
> > -       if git merge-base --is-ancestor $remote/$linux_next_fixes $remote/$linux_fixes ; then
> > -               # -fixes has caught up to dinf, i.e. we're out of the merge
> > -               # window. Push the next queue.
> > -               echo -n "Out of merge window. Pushing $linux_next to $for_linux_next... "
> > -               git_push $remote +$remote/$linux_next:$for_linux_next
> > -               echo "$DONE_OR_SKIP"
> > -       else
> > -               # dinf is ahead of -fixes, i.e. drm-next has already closed for
> > -               # the next merge window and we've started to gather new fixes
> > -               # for the current -next cycle. Push dinf
> > -
> > -               echo -n "Pushing $linux_next_fixes to $for_linux_next... "
> > -               git_push $remote +$remote/$linux_next_fixes:$for_linux_next
> > -               echo "$DONE_OR_SKIP"
> > -       fi
> > -}
> > -
> >  function check_conflicts # tree
> >  {
> >         if git diff | grep -q '\(<<<<<<<\|=======\|>>>>>>>\||||||||\)' ; then
> > @@ -1192,13 +1146,6 @@ function dim_push_branch
> >
> >         git_push $remote $branch "$@"
> >
> > -       update_linux_next $branch drm-intel-next drm-intel-next-fixes drm-intel-fixes
> > -       update_linux_next $branch drm-intel-gt-next drm-intel-next-fixes drm-intel-fixes \
> > -               for-linux-next-gt "" # no for-linux-next-gt-fixes for now
> > -       update_linux_next $branch drm-misc-next drm-misc-next-fixes drm-misc-fixes
> > -       update_linux_next $branch drm-rust-next drm-rust-next-fixes drm-rust-fixes
> > -       update_linux_next $branch drm-amd-next drm-amd-next-fixes drm-amd-fixes
> > -
> >         dim_rebuild_tip
> >  }
> >