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Linux Kernel Programming

You're reading from   Linux Kernel Programming A comprehensive guide to kernel internals, writing kernel modules, and kernel synchronization

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Product type Paperback
Published in Mar 2021
Publisher Packt
ISBN-13 9781789953435
Length 754 pages
Edition 1st Edition
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Author (1):
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Kaiwan N. Billimoria Kaiwan N. Billimoria
Author Profile Icon Kaiwan N. Billimoria
Kaiwan N. Billimoria
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Table of Contents (19) Chapters Close

Preface 1. Section 1: The Basics
2. Kernel Workspace Setup FREE CHAPTER 3. Building the 5.x Linux Kernel from Source - Part 1 4. Building the 5.x Linux Kernel from Source - Part 2 5. Writing Your First Kernel Module - LKMs Part 1 6. Writing Your First Kernel Module - LKMs Part 2 7. Section 2: Understanding and Working with the Kernel
8. Kernel Internals Essentials - Processes and Threads 9. Memory Management Internals - Essentials 10. Kernel Memory Allocation for Module Authors - Part 1 11. Kernel Memory Allocation for Module Authors - Part 2 12. The CPU Scheduler - Part 1 13. The CPU Scheduler - Part 2 14. Section 3: Delving Deeper
15. Kernel Synchronization - Part 1 16. Kernel Synchronization - Part 2 17. About Packt 18. Other Books You May Enjoy

Getting and applying the RTL patchset

Check the mainline or distribution kernel version that is running on your Raspberry Pi device (substitute the Raspberry Pi with any other device you may be running Linux on); for example, on the Raspberry Pi 3B+ I'm using, it's running the stock Raspbian (or Raspberry Pi OS) GNU/Linux 10 (buster) with the 5.4.51-v7+ kernel.

We'd like to build an RTL kernel for the Raspberry Pi with the closest possible matching kernel to the standard one it's currently running; for our case here, with it running 5.4.51[-v7+], the closest available RTL patches are for kernel versions 5.4.y-rt[nn] (https://mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/5.4/); we shall come back to this shortly...

Let's go step by step:

  1. The steps to download the Raspberry Pi specific kernel source tree onto your host system disk have already been covered in Chapter 3, Building the 5.x Linux Kernel from Source – Part 2, in the Kernel...
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