dim

#!/bin/bash

# Copyright © 2012-2014 Intel Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# Authors:
#    Daniel Vetter <daniel.vetter@ffwll.ch>

# drm-intel-next maintainer script

# TODO
# - Add functions to setup/update all the branches/trees
# - Improve docs/workflow for topic branches
# - extract the integration tree logic and make it generally useful, maybe for a
#   drm-integration tree ...

# fail on any goof-up
set -e

#
# User configuration. Set in environment or configuration file. See
# dimrc.sample for an example.
#

# dim configuration file
DIM_CONFIG=${DIM_CONFIG:-$HOME/.dimrc}
if [ -r $DIM_CONFIG ]; then
    . $DIM_CONFIG
fi

# prefix for repo directories
DIM_PREFIX=${DIM_PREFIX:-$HOME/linux}

# main maintainer repo under $DIM_PREFIX
DIM_DRM_INTEL=${DIM_DRM_INTEL:-src}

# name of the $drm_intel_ssh remote within $DIM_DRM_INTEL
DIM_DRM_INTEL_REMOTE=${DIM_DRM_INTEL_REMOTE:-danvet}

# name of the $drm_upstream_git remote within $DIM_DRM_INTEL
DIM_DRM_UPSTREAM_REMOTE=${DIM_DRM_UPSTREAM_REMOTE:-airlied}

# mail user agent. must support a subset of mutt(1) command line options:
# usage: $DIM_MUA [-s subject] [-i file] [-c cc-addr] to-addr [...]
DIM_MUA=${DIM_MUA:-mutt}

#
# Internal configuration.
#

today=`date +%Y-%m-%d`

drm_intel_ssh=ssh://git.freedesktop.org/git/drm-intel
drm_intel_git=git://anongit.freedesktop.org/drm-intel
drm_upstream_git=git://people.freedesktop.org/~airlied/linux
sound_upstream_git=git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
linux_upstream_git=git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

# email aliases
addr_drm_maintainer="Dave Airlie <airlied@gmail.com>"
addr_intel_gfx_maintainer1="Daniel Vetter <daniel.vetter@ffwll.ch>"
addr_intel_gfx_maintainer2="Jani Nikula <jani.nikula@linux.intel.com>"
addr_intel_gfx="intel-gfx@lists.freedesktop.org"
addr_dri_devel="dri-devel@lists.freedesktop.org"
addr_intel_qa="Terence Yang <guang.a.yang@intel.com>"

#
# Command line options.
#

DRY_RUN=
DRY=
FORCE=

while getopts df opt; do
	case "$opt" in
		d)
			DRY_RUN=--dry-run
			DRY=echo
			;;
		f)
			FORCE=1
			;;
		*)
			exit
	esac
done
shift `expr $OPTIND - 1`

# first positional argument is the subcommand
if [ "$#" = "0" ]; then
    subcommand="help"
else
    subcommand="$1"
    shift
fi

function update_linux_next
{
	cd $DIM_PREFIX/$DIM_DRM_INTEL

	if git grep "EXTRAVERSION.*=" origin/master Makefile | grep rc > /dev/null ; then
		echo linux-next: -rc phase
		if [[ $1 == queued ]] ; then
			echo Updating for-linux-next to -queued and updating for-linux-next-fixes
			git push $DRY_RUN $DIM_DRM_INTEL_REMOTE +drm-intel-next-queued:for-linux-next >& /dev/null
			git push $DRY_RUN $DIM_DRM_INTEL_REMOTE +drm-intel-fixes:for-linux-next-fixes >& /dev/null
		fi
		if [[ $1 == fixes ]] ; then
			echo Updating for-linux-next-fixes
			git push $DRY_RUN $DIM_DRM_INTEL_REMOTE +drm-intel-fixes:for-linux-next-fixes >& /dev/null
		fi
	else
		echo linux-next: merge window
		if [[ $1 == fixes ]] ; then
			echo Updating for-linux-next to -fixes
			git push $DRY_RUN $DIM_DRM_INTEL_REMOTE +drm-intel-fixes:for-linux-next >& /dev/null
		fi
	fi
}

function check_conflicts
{
	if git diff | grep '<<<<<<<' ; then
		echo conflict found
		exit 1
	fi
	if git diff | grep '=======' ; then
		echo conflict found
		exit 1
	fi
	if git diff | grep '>>>>>>>' ; then
		echo conflict found
		exit 1
	fi
	if git diff | grep '|||||||' ; then
		echo conflict found
		exit 1
	fi
	true
}

function update_rerere_cache
{
	cd $DIM_PREFIX/drm-intel-rerere/
	git pull
	cp rr-cache/* $DIM_PREFIX/drm-intel-nightly/.git/rr-cache/ -r
	cd -
}

function update_nightly
{
	local integration_branch=drm-intel-nightly
	local specfile=`mktemp`
	local time=`date +%Yy-%mm-%dd-%Hh-%Mm-%Ss`
	local first=1

	local rerere=$DIM_PREFIX/drm-intel-rerere

	cd $rerere
	if [[ `git status --porcelain | grep -v "^[ ?][ ?]" | wc -l` -gt 0 ]]; then
		if [[ $FORCE ]] ; then
			echo WARNING: -nightly configuration file not commited, but continuing with rebuild
		else
			echo ERROR: -nightly configuration file not commited, aborting
			exit 1
		fi
	fi

	source $rerere/nightly.conf

	cd $DIM_PREFIX/$integration_branch
	if ! git branch | grep $integration_branch | grep '\*' >& /dev/null ; then
		echo "Branch setup for the integration repo is borked"
		exit 1
	fi

	# git fetch returns 128 if there's nothing to be fetched
	git fetch origin >& /dev/null || true
	git fetch drm-upstream >& /dev/null || true
	git fetch sound-upstream >& /dev/null || true
	update_rerere_cache

	# merge -fixes
	for tree in $nightly_branches; do
		local branch=${tree%:*}
		local sha1=${tree#*:}
		local name=${branch##*/}

		# the : separator is optional
		if [[ $sha1 == $tree ]] ; then
			sha1=
		fi

		if [[ -n $sha1 ]] ; then
			echo Using override sha1: $sha1 for branch $name
		else
			sha1=$branch
		fi

		if [ $first == 1 ] ; then
			git reset --hard $sha1 >& /dev/null
			first=0
		else
			git merge --rerere-autoupdate --no-commit $sha1 >& /dev/null || true
			if [ -f $rerere/$integration_branch-$name-fixup.patch ] ; then
				echo applying manual fixup patch for $integration_branch merge ...
				git apply --index $rerere/$integration_branch-$name-fixup.patch
			fi
			check_conflicts
			git add -u

			if [[ `git diff --cached --name-status | wc -l` -gt 0 ]]; then
				git commit --no-edit || true
			fi
		fi

		echo $branch `git rev-parse $sha1` >> $specfile
	done

	mv $specfile integration-manifest
	git add integration-manifest
	git commit -m "$integration_branch: $time integration manifest"

	git push $DRY_RUN origin +HEAD >& /dev/null && echo "$integration_branch branch successfully updated"

	cd $rerere
	if git branch | grep rerere-cache | grep '\*' >& /dev/null ; then
		git pull >& /dev/null
		cp $DIM_PREFIX/$integration_branch/.git/rr-cache/* rr-cache -r
		git add *.patch >& /dev/null || true
		git add rr-cache/* > /dev/null
		if git commit -m "$time: $integration_branch rerere cache update" >& /dev/null; then
			echo "new rerere-cache commit"
		else
			echo "nothing changed in the rerere cache"
		fi
		git push $DRY_RUN origin HEAD >& /dev/null && echo "rerere cache successfully updated"
	else
		echo "Branch setup for the rerere-cache is borked"
	fi

}

function check_repo_clean
{
	cd $1
	if ! git diff-index --quiet HEAD ; then
		echo $2 repo not clean, aborting
		exit 1
	fi

}

# $1 is the git sha1 to check
function dim_checkpatch
{
	git show $1 --pretty=email | scripts/checkpatch.pl --strict - || true
	git show $1 | grep '^\+.*\WBUG' > /dev/null && echo -e "\n\nWARNING: New BUG macro added\n" || true
	git show $1 | grep '^\+.*drm_i915_private_t' > /dev/null && echo -e "\n\nWARNING: New drm_i915_private_t added\n" || true
}

function prep_pull_mail_tags
{
	cat > ~/tmp/dim-pull-request <<-HERE
	Hi Dave,

	HERE

	for tag in $@ ; do
		local obj=`git rev-parse $tag`
		if [[ `git cat-file -t $obj` == "tag" ]] ; then
			echo $tag: >> ~/tmp/dim-pull-request
			git cat-file -p $obj | tail -n+6 >> ~/tmp/dim-pull-request
		fi
	done

	cat >> ~/tmp/dim-pull-request <<-HERE

	Cheers, Daniel


	HERE
}

function prep_pull_mail
{
	cat > ~/tmp/dim-pull-request <<-HERE
	Hi Dave,

	<insert pull request overview here>

	Cheers, Daniel


	HERE
}

function setup_dim
{
	cd $DIM_PREFIX

	if [ ! -d $DIM_DRM_INTEL ]; then
		echo "please set up $DIM_PREFIX/$DIM_DRM_INTEL (or update config)"
		exit 1
	fi
	cd $DIM_DRM_INTEL
	if ! git remote -v | grep "^origin[[:space:]]" | grep $linux_upstream_git > /dev/null; then
		echo "please set up remote origin for $linux_upstream_git"
		exit 1
	fi
	if ! git remote -v | grep "^$DIM_DRM_INTEL_REMOTE[[:space:]]" | grep $drm_intel_ssh > /dev/null; then
		echo "please set up remote $DIM_DRM_INTEL_REMOTE for $drm_intel_ssh (or update config)"
		exit 1
	fi
	if ! git remote -v | grep "^$DIM_DRM_UPSTREAM_REMOTE[[:space:]]" | grep $drm_upstream_git > /dev/null; then
		echo "please set up remote $DIM_DRM_UPSTREAM_REMOTE for $drm_upstream_git (or update config)"
		exit 1
	fi
	cd ..

	if [ ! -d maintainer-tools ]; then
		git clone $drm_intel_ssh maintainer-tools
	fi
	cd maintainer-tools
	git config remote.origin.url $drm_intel_ssh
	if ! git branch | grep maintainer-tools > /dev/null ; then
		git checkout -t origin/maintainer-tools
	fi
	cd ..

	if [ ! -d drm-intel-rerere ]; then
		git clone $drm_intel_ssh drm-intel-rerere
	fi
	cd drm-intel-rerere
	git config remote.origin.url $drm_intel_ssh
	if ! git branch | grep rerere-cache > /dev/null ; then
		git checkout -t origin/rerere-cache
	fi
	cd ..

	if [ ! -d drm-intel-nightly ]; then
		git clone $drm_intel_ssh drm-intel-nightly
	fi
	cd drm-intel-nightly
	mkdir -p .git/rr-cache
	git config remote.origin.url $drm_intel_ssh
	if ! git branch | grep drm-intel-nightly > /dev/null ; then
		git checkout -t origin/drm-intel-nightly
	fi
	if git remote | grep drm-upstream > /dev/null ; then
		git config remote.drm-upstream.url $drm_upstream_git
	else
		git remote add drm-upstream $drm_upstream_git
	fi
	if git remote | grep sound-upstream > /dev/null ; then
		git config remote.sound-upstream.url $sound_upstream_git
	else
		git remote add sound-upstream $sound_upstream_git
	fi
}

cd $DIM_PREFIX/$DIM_DRM_INTEL

case "$subcommand" in
	setup)
		setup_dim
		;;
	upload-docs)
		# cd back
		cd -
		make htmldocs
		$DRY scp -r Documentation/DocBook/drm annarchy.freedesktop.org:~/public_html
		;;
	nightly-forget)
		cd $DIM_PREFIX/drm-intel-nightly
		git fetch origin >& /dev/null
		git reset --hard origin/drm-intel-next-queued >& /dev/null
		git merge origin/drm-intel-fixes
		git rerere forget
		;;
	update-branches|ub)
		git fetch $DIM_DRM_INTEL_REMOTE
		check_repo_clean $DIM_PREFIX/$DIM_DRM_INTEL Kernel
		dim co
		git rebase -i $DIM_DRM_INTEL_REMOTE/drm-intel-next-queued
		dim cof
		git rebase -i $DIM_DRM_INTEL_REMOTE/drm-intel-fixes
		git checkout drm-intel-next
		git reset --hard $DIM_DRM_INTEL_REMOTE/drm-intel-next
		# TODO: Restore -nightly merge state from the rerere-cache
		# branch
		update_rerere_cache
		;;
	rebuild-nightly)
		update_nightly
		;;
	push-queued|pq)
		if git branch | grep drm-intel-next-queued | grep '\*' ; then
			git push $DRY_RUN $DIM_DRM_INTEL_REMOTE drm-intel-next-queued $@

			update_nightly
			update_linux_next queued
		else
			echo "You're on the wrong branch."
		fi
		;;
	push-fixes|pf)
		if git branch | grep drm-intel-fixes | grep '\*' ; then
			git push $DRY_RUN $DIM_DRM_INTEL_REMOTE drm-intel-fixes  $@

			update_nightly
			update_linux_next fixes
		else
			echo "You're on the wrong branch."
		fi
		;;
	co)
		git checkout drm-intel-next-queued
		;;
	cof)
		git checkout drm-intel-fixes
		;;
	apply-branch|ab)
		branch=$1
		shift

		if [[ -n `git status --porcelain --untracked-files=no` ]] ; then
			echo Repository not clean, aborting
			exit 2
		fi

		if git branch | grep $branch | grep '\*' ; then
			git am -3 $@
			dim_checkpatch HEAD
			git commit --amend &
		else
			echo "You're on the wrong branch."
		fi
		;;
	apply-queued|aq)
		dim apply-branch drm-intel-next-queued $@
		;;
	apply-fixes|af)
		dim apply-branch drm-intel-fixes $@
		;;
	apply-resolved|ar)
		make -j 20 && git add -u && git am --resolved
		dim_checkpatch HEAD
		git commit --amend &
		;;
	apply-igt|ai)
		cd ~/xorg/intel-gpu-tools/
		git am -3 -s
		;;
	magic-patch|mp)
		conflict_files=`patch -p1 | grep "saving rejects" | sed -e "s/.*saving rejects to file \(.*\)/\1/"`

		if [[ $conflict_files != "" ]] ; then
			echo conflicts found!
		fi

		for file in $conflict_files ; do
			echo wiggling in ${file%.rej}:
			#cat $file
			rm -f ${file%.rej}.porig
			wiggle -r ${file%.rej} $file || true
		done
		;;
	magic-rebase-resolve|mrr)
		git diff HEAD | patch -p1 -R
		cat .git/rebase-merge/patch | dim mp
		make -j 20
		git add -u
		git rebase --continue
		;;
	tc)
		git tag --contains $1 | grep ^v | sort -V | head -n 1
		;;
	check-patch|cp)
		if [ "x$1" == "x" ] ; then
			dim_checkpatch HEAD
		else
			dim_checkpatch $1
		fi
		;;
	pull-request)
		if [[ "x$1" != "x" ]] ; then
			upstream=$1
		else
			upstream=$DIM_DRM_UPSTREAM_REMOTE/drm-next
			git fetch $DIM_DRM_UPSTREAM_REMOTE >& /dev/null || true
		fi
		echo Using $upstream as the upstream

		# generate tag list
		drm_intel_next_tags=`git log $DIM_DRM_INTEL_REMOTE/drm-intel-next ^$upstream --decorate | grep "(.*tag: drm-intel-next-" | sed -e "s/^.*(.*tag:.*\(drm-intel-next-[^ ,]*\).*)$/\1/"`
		prep_pull_mail_tags $drm_intel_next_tags
		git request-pull $upstream $drm_intel_git $DIM_DRM_INTEL_REMOTE/drm-intel-next >> ~/tmp/dim-pull-request
		$DIM_MUA -s "[PULL] drm-intel-next" \
			-i ~/tmp/dim-pull-request \
			-c "$addr_intel_gfx" \
			-c "$addr_dri_devel" \
			-c "$addr_intel_gfx_maintainer1" \
			-c "$addr_intel_gfx_maintainer2" \
			"$addr_drm_maintainer"
		;;
	pull-request-fixes)
		if [[ "x$1" != "x" ]] ; then
			upstream=$1
		else
			upstream=origin/master
			git fetch origin >& /dev/null || true
		fi
		echo Using $upstream as the upstream
		$DRY git tag -f drm-intel-fixes-$today $DIM_DRM_INTEL_REMOTE/drm-intel-fixes
		$DRY git push -f $DIM_DRM_INTEL_REMOTE drm-intel-fixes-$today
		prep_pull_mail
		git request-pull $upstream $drm_intel_git $DIM_DRM_INTEL_REMOTE/drm-intel-fixes >> ~/tmp/dim-pull-request
		$DIM_MUA -s "[PULL] drm-intel-fixes" \
			-i ~/tmp/dim-pull-request \
			-c "$addr_intel_gfx" \
			-c "$addr_dri_devel" \
			-c "$addr_intel_gfx_maintainer1" \
			-c "$addr_intel_gfx_maintainer2" \
			"$addr_drm_maintainer"
		;;
	pull-request-topic)
		if [[ "x$1" != "x" ]] ; then
			branch=$1
		else
			echo no branch given
		fi
		if [[ "x$2" != "x" ]] ; then
			upstream=$2
		else
			echo no upstream given
		fi
		$DRY git tag -f $branch-$today $DIM_DRM_INTEL_REMOTE/$branch
		$DRY git push -f $DIM_DRM_INTEL_REMOTE $branch-$today
		prep_pull_mail
		git request-pull $upstream $drm_intel_git $DIM_DRM_INTEL_REMOTE/$branch >> ~/tmp/dim-pull-request
		$DIM_MUA -s "[PULL] $branch" \
			-i ~/tmp/dim-pull-request \
			-c "$addr_intel_gfx" \
			-c "$addr_dri_devel" \
			-c "$addr_intel_gfx_maintainer1" \
			-c "$addr_intel_gfx_maintainer2" \
			"$addr_drm_maintainer"
		;;
	update-next)
		cd $DIM_PREFIX/$DIM_DRM_INTEL
		git fetch $DIM_DRM_INTEL_REMOTE
		if ! git branch --merged $DIM_DRM_INTEL_REMOTE/drm-intel-nightly | grep drm-intel-fixes &> /dev/null ; then
			echo "drm-intel-fixes not merged into -nigthly, please update!"
			exit 2
		fi
		if ! git branch --merged $DIM_DRM_INTEL_REMOTE/drm-intel-nightly | grep drm-intel-next-queued &> /dev/null ; then
			echo "drm-intel-next-queued not merged into -nigthly, please update!"
			exit 2
		fi

		gitk drm-intel-next-queued ^$DIM_DRM_UPSTREAM_REMOTE/drm-next &

		git push $DRY_RUN $DIM_DRM_INTEL_REMOTE drm-intel-next-queued:drm-intel-next
		tag=drm-intel-next-$today
		$DRY git tag -f -a $tag $DIM_DRM_INTEL_REMOTE/drm-intel-next
		git push $DRY_RUN -f $DIM_DRM_INTEL_REMOTE $tag

		echo "Updating -testing to latest -nightly"
		git push $DRY_RUN $DIM_DRM_INTEL_REMOTE +$DIM_DRM_INTEL_REMOTE/drm-intel-nightly:drm-intel-testing

		cat > ~/tmp/test-request <<-HERE
		Hi all,

		New -testing cycle with cool stuff:
		HERE
		obj=`git rev-parse $tag`
		if [[ `git cat-file -t $obj` == "tag" ]] ; then
			git cat-file -p $obj | tail -n+6 >> ~/tmp/test-request
		else
			echo "<tag doesn't contain a changelog overview, fix this>" >> ~/tmp/test-request
		fi
		cat >> ~/tmp/test-request <<-HERE

		Happy testing!

		Cheers, Daniel
		HERE

		$DIM_MUA -s "Updated drm-intel-testing" \
			-i ~/tmp/test-request \
			-c "$addr_intel_gfx" \
			-c "$addr_intel_gfx_maintainer1" \
			-c "$addr_intel_gfx_maintainer2" \
			"$addr_intel_qa"
		;;
	checker)
		rm drivers/gpu/drm/i915/*.o &> /dev/null || true
		rm drivers/gpu/drm/i915/*.ko &> /dev/null || true
		make C=1 drivers/gpu/drm/i915/i915.ko
		;;
	*)
		if hash rst2man 2>/dev/null; then
			renderer=rst2man
			pager="man -l -"
		else
			renderer=cat
			pager=${PAGER:-cat}
		fi
		$renderer <<HERE | $pager
=====
 dim
=====

---------------------------
drm-intel maintainer script
---------------------------

:Author: Daniel Vetter <daniel.vetter@ffwll.ch>
:Author: Jani Nikula <jani.nikula@intel.com>
:Date: 2014-05-15
:Copyright: 2012-2014 Intel Corporation
:Manual section: 1
:Manual group: maintainer tools

SYNOPSIS
========

**dim** [*option* ...] *command*

DESCRIPTION
===========

drm-intel maintainer script.

OPTIONS
=======

-v		Verbose output.
-d		Dry run.

COMMANDS
========

setup *prefix*
--------------
Setup git maintainer branches in the given prefix.

nightly-forget
--------------
Forget git rerere solutions for nightly merges in case they
contain a bogus merge resolution.

update-branches
---------------
Updates all maintainer branches.

rebuild-nightly
---------------
Rebuilds the nightly branch. Useful when ad-hoc trees are
included in -nightly.

push-queued|pq [*git push arguments*]
-------------------------------------

push-fixes|pf [*git push arguments*]
------------------------------------

Updates the drm-intel-fixes or the drm-intel-next-queued branch
respectively. Complains if that's not the current branch,
assuming that patches got merged to the wrong branch.

co
--

cof
---
Checks out the drm-intel-fixes branch or dinq respectively for
merging patches.

apply-branch|ab branch [*git am arguments*]
-------------------------------------------
Applys a patch to the given branch, complaining if it is not
checked out yet.

apply-queued|aq [*git am arguments*]
------------------------------------

apply-fixes|af [*git am arguments*]
-----------------------------------
Applies a patch to fixes or queued respectively, complains if
it's not the right branch. Additional arguments are passed to
git am.

magic-patch|mp
--------------
Apply a patch using patch and then wiggle in any conflicts.

magic-rebase-resolve|mrr
------------------------
Tries to resolve a rebase conflict by first resetting the tree
and the using the magic patch tool. Then builds the tree, adds
any changes with git add -u and continues the rebase.

apply-resolved|ar
-----------------
Compile-test the current tree and if successfully resolve a
confilicted git am. Also runs the patch checker afterwards.

apply-igt|ai
------------
Apply a patch to the i-g-t repository.

tc *commit-ish*
---------------
Prints the linux kernel tag which contains the supplied commit-ish

check-patch|cp [*commit-ish*]
-----------------------------
Runs a commit through the check tools like when applying a
patch. Git commit-ish can be passed in, defaults to HEAD

pull-request [*upstream*]
-------------------------

pull-request-fixes [*upstream*]
-------------------------------
Create a tag for the -fixes, but no tag is created for -next
since that's already been done by update-next. Then prepares a
pull request in ~/tmp/dim-pull-request. The upstream for -fixes
defaults to origin/master, the upstream for -next defaults to
airlied/drm-next

Since the tag for -fixes is based only on the day (and not the
exact time) and there's not tag being pushed for -next the pull
request can be regenerated with the same commands if the
upstream was wrong.

Then fires up mutt with the pre-generated email with subject and
recipients already set.

pull-request-topic *branch* *upstream*
--------------------------------------
Generates a pull request for the given topic-branch/upstream
combo and fires up mutt with the pre-generated email.

update-next
-----------
Pushes out the latest dinq to drm-intel-next and tags it. Also
pushes out the latest nightly to drm-intel-testing. For an
overview a gitk view of the currently unmerged feature pile is
opened.

Also checks that the drm-intel-fixes|-next-queued are fully
merged into -nightly to avoid operator error.

upload-docs
-----------
Generate html kernel docs and upload the drm DocBook to the
private fdo space. Note that this always uses the kernel sources
in the current directory.

checker
-------
Run sparse on the kernel.
HERE
		exit 0
		;;
esac