Linux Kernel Programming Part 2 – Char Device Drivers and Kernel Synchronization: Create user-kernel interfaces, work with peripheral I/O, and handle hardware interrupts

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Discover how to write high-quality character driver code, interface with userspace, work with chip memory, and gain an in-depth understanding of working with hardware interrupts and kernel synchronization

Key FeaturesDelve into hardware interrupt handling, threaded IRQs, tasklets, softirqs, and understand which to use whenExplore powerful techniques to perform user-kernel interfacing, peripheral I/O and use kernel mechanismsWork with key kernel synchronization primitives to solve kernel concurrency issuesBook Description

Linux Kernel Programming Part 2 – Char Device Drivers and Kernel Synchronization is an ideal companion guide to the Linux Kernel Programming book. This book provides a comprehensive introduction for those new to Linux device driver development and will have you up and running with writing misc class character device driver code (on the 5.4 LTS Linux kernel) in next to no time.

You’ll begin by learning how to write a simple and complete misc class character driver before interfacing your driver with user-mode processes via procfs, sysfs, debugfs, netlink sockets, and ioctl. You’ll then find out how to work with hardware I/O memory. The book covers working with hardware interrupts in depth and helps you understand interrupt request (IRQ) allocation, threaded IRQ handlers, tasklets, and softirqs. You’ll also explore the practical usage of useful kernel mechanisms, setting up delays, timers, kernel threads, and workqueues. Finally, you’ll discover how to deal with the complexity of kernel synchronization with locking technologies (mutexes, spinlocks, and atomic/refcount operators), including more advanced topics such as cache effects, a primer on lock-free techniques, deadlock avoidance (with lockdep), and kernel lock debugging techniques.

By the end of this Linux kernel book, you’ll have learned the fundamentals of writing Linux character device driver code for real-world projects and products.

What you will learnGet to grips with the basics of the modern Linux Device Model (LDM)Write a simple yet complete misc class character device driverPerform user-kernel interfacing using popular methodsUnderstand and handle hardware interrupts confidentlyPerform I/O on peripheral hardware chip memoryExplore kernel APIs to work with delays, timers, kthreads, and workqueuesUnderstand kernel concurrency issuesWork with key kernel synchronization primitives and discover how to detect and avoid deadlockWho this book is for

An understanding of the topics covered in the Linux Kernel Programming book is highly recommended to make the most of this book. This book is for Linux programmers beginning to find their way with device driver development. Linux device driver developers looking to overcome frequent and common kernel/driver development issues, as well as perform common driver tasks such as user-kernel interfaces, performing peripheral I/O, handling hardware interrupts, and dealing with concurrency will benefit from this book. A basic understanding of Linux kernel internals (and common APIs), kernel module development, and C programming is required.

Table of ContentsWriting a simple Misc Character Device DriverUser-Kernel Communication PathwaysWorking with hardware IO MemoryHandling Hardware InterruptsTimers, Kernel Threads and MoreKernel Synchronization, Part 1Kernel Synchronization, Part 2

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Series
Part 1 Part 2

User Experience Level
Beginner Beginner to Intermediate

Key Focuses
Explore the procmap script+kernel module to visualize the complete memory map of a process as well as ways to handle kernel concurrency issues like deadlock Insights into the driver framework on Linux, writing a misc class character device driver, and working effectively with hardware interrupts

Compatible Version
5.4 LTS Linux kernel (valid until December 2025) 5.4 LTS Linux kernel (valid until December 2025)

Page Count
754 452

ASIN ‏ : ‎ B08ZSV58G8
Publisher ‏ : ‎ Packt Publishing; 1st edition (March 19, 2021)
Publication date ‏ : ‎ March 19, 2021
Language ‏ : ‎ English
File size ‏ : ‎ 17.6 MB
Text-to-Speech ‏ : ‎ Enabled
Screen Reader ‏ : ‎ Supported
Enhanced typesetting ‏ : ‎ Enabled
X-Ray ‏ : ‎ Not Enabled
Word Wise ‏ : ‎ Not Enabled
Print length ‏ : ‎ 452 pages
Page numbers source ISBN ‏ : ‎ 180107951X