stable-test-apply

#!/bin/sh
## Try applying a commit to stable branches (git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git)
# Tip: create worktree in /dev/shm

# Update as necessary (branches remotes/stable/linux-4.0.y)
s='6.18 6.12 6.6 6.1 5.15'
ok=
bad=
abortonbad=true
quiet=--quiet

if ! [ -z "$2" ]; then
	s="$2"
	echo "STABLE: check only $s"
	abortonbad=false
fi

if [ -z "$1" ]; then
	if ! [ -z "$2" ]; then
		echo "STABLE: checkout latest $2"
		git reset --hard
		git checkout -f
		git checkout $quiet -f remotes/stable/linux-${2}.y
		exit
	fi
	echo "STABLE: no args"
	exit
fi

for i in $s; do
	echo STABLE: $i

	b=remotes/stable/linux-${i}.y

	git reset --hard
	git checkout -f

	git checkout $quiet -f $b
	if git cherry-pick "$1"; then
		echo -e "\e[32mSTABLE: $i OK -- $1\e[39m"
		ok="$ok $i"
	else
		echo -e "\e[31mSTABLE: $i BAD -- $1\e[39m"
		bad="$bad $i"
		# save diffs if you need to debug further, normally git
		# mergetool is sufficient
		# { git diff ; git diff --cached; } > z-stable-${i}-${1}.diff
		if $abortonbad; then
			git cherry-pick --abort
		fi
	fi
	echo -e "\e[36mSTABLE OK:$ok\e[39m"
	echo -e "\e[36mSTABLE BAD:$bad\e[39m"
done

echo "STABLE OK: $ok"
echo "STABLE BAD: $bad"