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Linux Kernel Programming Essentials
A Practical Guide to Kernel Internals, Modules, Drivers, Memory, and System Development
English
39 b
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Understand the Linux kernel. Write safer low-level code. Build a foundation for systems development.
Linux kernel programming is one of the most powerful areas of software engineering, but it requires a different mindset from ordinary application development. Kernel code does not run in a protected environment. It operates with high privileges, manages memory, controls hardware access, handles interrupts, schedules work, and provides the foundation on which applications depend.
Linux Kernel Programming Essentials provides a structured path into this complex environment. Rather than focusing on memorizing internal functions that may change between kernel releases, this book teaches the durable concepts that allow developers to understand unfamiliar subsystems, identify interfaces, write controlled changes, and verify that their work is safe.
You will learn how to:
- Understand the boundary between user space and kernel space
- Explore Linux kernel architecture and major subsystems
- Understand how system calls transfer execution into the kernel
- Build a safe and reproducible kernel development laboratory
- Compile and test external modules
- Create, load, observe, and remove kernel modules
- Understand module lifecycle, dependencies, symbols, and signing
- Work with processes, threads, scheduling, and execution contexts
- Understand why sleeping, locking, and waiting rules matter
- Apply synchronization techniques including mutexes, spinlocks, atomic operations, and memory ordering
- Manage kernel memory safely
- Understand allocation contexts, page allocation, object lifetimes, and memory pressure
- Design safer user-kernel interfaces
- Validate user input and handle errors correctly
- Build character devices and file operation interfaces
- Understand device models, drivers, interrupts, DMA, and hardware interaction
- Explore VFS, procfs, sysfs, and debugfs interfaces
- Use tracing and diagnostic tools to investigate kernel behavior
- Apply testing methods including KUnit, kselftest, static analysis, and fault injection
- Review kernel changes using professional engineering practices
The book emphasizes a disciplined approach to kernel development. Before changing kernel state, developers learn to identify the affected object, define evidence of success, understand rollback options, and consider failure behavior. Throughout the chapters, you will work through practical exercises that build toward a complete learning project. You begin by observing a running kernel, then compile and load modules, interact with controlled device interfaces, examine driver behavior, use tracing tools, and finally combine these skills into a small auditable teaching driver.
If you want to move beyond writing applications and understand the software layer that controls processes, memory, devices, and hardware interaction, Linux Kernel Programming Essentials provides the foundation.
About the book
English
