---
- name: Enable cgroup via boot commandline if not already enabled for Ubuntu on a Raspberry Pi
  lineinfile:
    path: /boot/firmware/cmdline.txt
    backrefs: yes
    regexp: '^((?!.*\bcgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory\b).*)$'
    line: '\1 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
  notify: reboot

- name: Install linux-modules-extra-raspi
  apt:
    name: linux-modules-extra-raspi
    state: present

- name: Teardown
  when: state == "absent"
  block:
    - name: Remove linux-modules-extra-raspi
      apt:
        name: linux-modules-extra-raspi
        state: absent