scripts/kernel-merge at master · bohregard/scripts · GitHub

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#!/bin/bash
# Script to make pulling down upstream kernel revisions
#set -x
here=`pwd`

upstream=/elmo/source/3.10.y

#debugging flag
debug=false

# accept input as desired upstream kernel revision
revision=$1

print=$2 # y or n

# variables used in script
revision_file=
version=
patchlevel=
sublevel=

# print out of supported releases and patchlevels
supported_releases="3.x"
supported_3_patchlevels="3.0, 3.4, 3.10"

#####

if [ -z $revision ]; then
	echo "Desired revision not provided..."
	exit 0
fi

function get_kernel_specs() {
    version=$(echo $revision | cut -d '.' -f1)
    patchlevel=$(echo $revision | cut -d '.' -f2)
    sublevel=$(echo $revision | cut -d '.' -f3)

    if [ "$version" != "3" ]; then
        echo "Supported linux kernel releases are ${supported_releases}"
        exit 0
    fi

    if [ "$patchlevel" != "0" ] && [ "$patchlevel" != "4" ] && [ "$patchlevel" != "10" ]; then
        echo "Supported patchlevels of linux release $version.x are ${supported_3_patchlevels}"
        exit 0
    fi
}

function fetch_upstream() {

    branch=linux-$version.$patchlevel.y
    if git ls-remote linux > /dev/null; then
        git fetch linux $branch
    else
        git remote add linux https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
        git fetch linux $branch
    fi
}

function create_array() {
    # Create array of commit SHA1's for cherry-picking
    cd $upstream
    git fetch linux
    presublevel=$(($sublevel-1))
    prerevision=${version}.${patchlevel}.${presublevel}
    list=`git rev-list HEAD --reverse --no-merges v${prerevision}..v${revision}`
    if [ "$print" == "y" ]; then
        print_array
        cd -
        exit 0
    fi
    cd -
}

function print_array() {
    for commit in ${list[@]}; do
        echo $commit
    done
}

function pick() {
    for commit in ${list[@]}; do
        git cherry-pick $commit
    done
}

function checkout_staging_branch() {
    git checkout -b $revision
}


function run() {
    get_kernel_specs
    fetch_upstream
    create_array
    checkout_staging_branch
    pick
}

run