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Kworkflow

About

This set of scripts have a simple mission: reduce the overhead with infrastructure setup for Linux development. We export all the scripts functionality via bashrc, to make the commands available in any place you want to work.

Kworkflow stands for Kernel Workflow.

Package Dependencies

You have to figure out the correct package name in your distro for the following dependencies:

  • libguestfs
  • Qemu
  • Ansible

Recommendations

If you want to use Qemu, we recommend the following steps:

  1. Create an Qemu image as a qcow2;
  2. Create a working directory: /mnt/qemu;
  3. After you have your image, we recommend you to setup basic stuff (this can vary depends on the distribution you choose - kernel setup, ssh, etc);

Install kw

In the main directory, type:

./setup -i
bash --login

This command will install kw in ~/.config/kw, and add the following lines at the end of your .bashrc:

# kw
source /home/<user>/.config/kw/kw.sh

To check if the installations was ok, type:

kw help

Finally, everytime that you want to update your kw just pull from this repository and install again (./setup -i remove legacy files and intall new one).

Local configuration file

One of the features of this project, it is the ability to set a specific set of configuration per directory. For example, if you have a particular kernel tree named 'drm-work' and want a different configuration from the default you can follow these steps:

  1. Copy kw.config.example as follows:
cp kworkflow.config.example /path/to/your/kernel/tree/drm-work/kworkflow.config

Note: the default name must be kworkflow.config

  1. Change the options inside:
qemu_hw_options=-enable-kvm -daemonize -m 3G -smp cores=4,cpus=4
qemu_net_options=-net nic -net user,hostfwd=tcp::2222-:22,smb=$HOME
qemu_path_image=$HOME/p/virty.qcow2
  1. Done, every time you execute any command in the root dir of drm-work the configuration file will be read. If file does not exists, the default operation will be used.

How to

Help commands:

kw help

Build a Kernel and install in the Qemu image:

kw bi

Mount Qemu image to transfer data:

kw mount

Umount Qemu image:

kw umount

If you want to use KBUILD_OUTPUT:

kw export

Show variable status used by kw:

kw vars

Turn on vm:

kw up

Run checkpatch in a target (directory of file):

kw codestyle <DIRECTORY_PATH | FILE_PATH>

Get maintainers (directory or file):

kw maintainers <DIRECTORY_PATH | FILE_PATH>

You can put your VM in a status that is ready for work with the prepare command. However, there is some basic steps for it work well:

  1. Add your public key in the VM on the authorized_keys file;
  2. Remove the requirement for password in the VM to became root. Something like that:
user ALL=(ALL) NOPASSWD: ALL

If you have everything set, just execute the command:

kw prepare