Book Image

Linux Kernel Programming

By : Kaiwan N. Billimoria
Book Image

Linux Kernel Programming

By: Kaiwan N. Billimoria

Overview of this book

Linux Kernel Programming is a comprehensive introduction for those new to Linux kernel and module development. This easy-to-follow guide will have you up and running with writing kernel code in next-to-no time. This book uses the latest 5.4 Long-Term Support (LTS) Linux kernel, which will be maintained from November 2019 through to December 2025. By working with the 5.4 LTS kernel throughout the book, you can be confident that your knowledge will continue to be valid for years to come. You’ll start the journey by learning how to build the kernel from the source. Next, you’ll write your first kernel module using the powerful Loadable Kernel Module (LKM) framework. The following chapters will cover key kernel internals topics including Linux kernel architecture, memory management, and CPU scheduling. During the course of this book, you’ll delve into the fairly complex topic of concurrency within the kernel, understand the issues it can cause, and learn how they can be addressed with various locking technologies (mutexes, spinlocks, atomic, and refcount operators). You’ll also benefit from more advanced material on cache effects, a primer on lock-free techniques within the kernel, deadlock avoidance (with lockdep), and kernel lock debugging techniques. By the end of this kernel book, you’ll have a detailed understanding of the fundamentals of writing Linux kernel module code for real-world projects and products.
Table of Contents (19 chapters)
1
Section 1: The Basics
6
Writing Your First Kernel Module - LKMs Part 2
7
Section 2: Understanding and Working with the Kernel
10
Kernel Memory Allocation for Module Authors - Part 1
11
Kernel Memory Allocation for Module Authors - Part 2
14
Section 3: Delving Deeper
17
About Packt

Installing a 64-bit Linux guest

Here, I won't delve into the minutiae of installing Linux as a guest on Oracle VirtualBox, the reason being that this installation is not directly related to Linux kernel development. There are many ways to set up a Linux VM; we really don't want to get into the details and the pros and cons of each of them here.

But if you are not familiar with this, don't worry. For your convenience, here are some excellent resources that will help you out:

  • A very clearly written tutorial entitled Install Linux Inside Windows Using VirtualBox by Abhishek Prakash (It's FOSS!, August 2019): https://itsfoss.com/install-linux-in-virtualbox/.

  • An alternate, similarly excellent resource is Install Ubuntu on Oracle VirtualBox: https://brb.nci.nih.gov/seqtools/installUbuntu.html.

Also, you can look up useful resources for installing a Linux guest on VirtualBox in the Further reading section at the end of this chapter. 

While you install the Linux VM, keep the following things in mind.