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Linux Kernel Programming - Second Edition

You're reading from Linux Kernel Programming - Second Edition

Product type Book

Published in Feb 2024

Publisher Packt

ISBN-13 9781803232225

Pages 826 pages

Edition 2nd Edition

Languages

Concepts

System Administration

Author (1):

Kaiwan N. Billimoria

Table of Contents (16) Chapters

Preface

1. Linux Kernel Programming – A Quick Introduction

2. Building the 6.x Linux Kernel from Source – Part 1

3. Building the 6.x Linux Kernel from Source – Part 2

4. Writing Your First Kernel Module – Part 1

5. Writing Your First Kernel Module – Part 2

6. Kernel Internals Essentials – Processes and Threads

7. Memory Management Internals – Essentials

8. Kernel Memory Allocation for Module Authors – Part 1

9. Kernel Memory Allocation for Module Authors – Part 2

10. The CPU Scheduler – Part 1

11. The CPU Scheduler – Part 2

12. Kernel Synchronization – Part 1

13. Kernel Synchronization – Part 2

14. Other Books You May Enjoy

15. Index

Verifying our new kernel’s configuration

Okay, so back to our discussion. We have now booted into our newly built kernel. But hang on, please don’t blindly assume that everything’s just fine; let’s actually verify that.

The empirical approach is always best; in this section, let’s verify that we are indeed running the (6.1.25) kernel we just built and that it has indeed been configured as we intended. We start by examining the kernel version:

$ uname -r
6.1.25-lkp-kernel

Indeed, we are now running Ubuntu 22.04 LTS on our just-custom-built 6.1.25 LTS kernel! Further variations of the uname utility show us the machine hardware name and the OS is as planned: we’re on the x86_64 running GNU/Linux:

$ uname -m ; uname -o
x86_64
GNU/Linux

Moving along, recall our discussion in Chapter 2, Building the 6.x Linux Kernel from Source – Part 1, in the Sample usage of the make menuconfig UI section, where we performed a couple...

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Authors (1)

Kaiwan N. Billimoria

Kaiwan N. Billimoria taught himself BASIC programming on his dad's IBM PC back in 1983. He was programming in C and Assembly on DOS until he discovered the joys of Unix, and by around 1997, Linux! Kaiwan has worked on many aspects of the Linux system programming stack, including Bash scripting, system programming in C, kernel internals, device drivers, and embedded Linux work. He has actively worked on several commercial/FOSS projects. His contributions include drivers to the mainline Linux OS and many smaller projects hosted on GitHub. His Linux passion feeds well into his passion for teaching these topics to engineers, which he has done for well over two decades now. He's also the author of Hands-On System Programming with Linux, Linux Kernel Programming (and its Part 2 book) and Linux Kernel Debugging. It doesn't hurt that he is a recreational ultrarunner too.

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