Kernel Stuff

Some kernel experiments.

Here are some basic notes the describe how I modified the kernel and published it to a PPA. I used the following as reference:

  * https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel
  * https://wiki.linaro.org/Resources/HowTo/PackageYourOwnKernel
  * https://wiki.ubuntu.com/KernelTeam/KernelMaintenance#Overriding_module_check_failures

# Get the kernel and tool chain

    sudo apt-get build-dep linux-image-$(uname -r)
    git clone git://kernel.ubuntu.com/ubuntu/ubuntu-wily.git
    cd ubuntu-wily

Make a branch to work on your changes.

    git checkout -b coolpatch

# Modify the kernel

Apply any patches.

    patch -p1 < /path/to/coolpatch.diff

Bump the version by adding something like +coolpatch01 to the last changelog entry in debian.master/changelog. *DO NOT* add a new changelog entry, just modify the existing entry with a suffix and add your changes to the log.

Now commit the changes.

# Do a local test build

    chmod a+x debian/scripts/*
    chmod a+x debian/scripts/misc/*
    fakeroot debian/rules clean
    fakeroot debian/rules binary-headers binary-generic

Install the .deb packages created to test your new kernel.

# Submit for PPA build

Make sure everything is committed then ready the kernel for building.

    git clean -d -f -x
    fakeroot debian/rules clean

Create the source packages and upload to the PPA.

    debuild -kYOURGPGKEY -S -i -I
    dput ppa:ppaname *.changes