Overview

The Gap Between Good Developers and Kernel Engineers Is Smaller Than You Think Most engineers spend their careers one layer above the code that actually matters. They build on top of the kernel, debug issues that originate inside it, and hit performance limits they cannot fully explain - because the real decisions are hidden in scheduling, memory allocation, and driver behavior they have never seen. It does not have to be that way. Mastering Linux Kernel Programming is a production-focused guide to understanding how the Linux kernel actually works - and how to build inside it. You will go from core architecture and mental models to real-world implementation: device drivers, memory management, concurrency, eBPF observability, Rust in the kernel, and network driver development. Every chapter is built around working code, real subsystems, and the same patterns used by professional kernel engineers. This is not a survey. This is a complete engineering path. What You'll Learn Build production-quality kernel modules, drivers, and subsystems Master memory management, from page allocation to DMA Write correct concurrent kernel code using locks, RCU, and memory barriers Develop eBPF programs with libbpf and CO-RE for observability and security Use Rust in the kernel for memory-safe systems programming Implement high-performance network drivers with NAPI and full stack integration Validate and prepare code for upstream Linux kernel submission Who This Book Is ForThis book is for engineers ready to go deeper: Systems programmers who want to understand what happens below userspace Embedded engineers building drivers and platform integrations DevOps and SREs diagnosing performance and production issues Security engineers working on kernel-level tooling and analysis Software engineers transitioning into systems and infrastructure roles You should be comfortable with C and familiar with Linux. No prior kernel experience is required. Why This Book Is DifferentMost kernel books are outdated or stop at toy examples. This book is built for Linux 6.x and modern production systems: Uses libbpf and CO-RE, not legacy tooling Covers in-tree Rust kernel development (Linux 6.1+) Implements real subsystems, not ""hello world"" modules Walks through building and submitting a complete kernel patch series You don't just learn concepts - you build working systems. What You Get Fully working code and QEMU-based development environment Architecture diagrams and decision guides for real engineering choices Practical exercises in every chapter Reference appendices for tools, workflows, and kernel development Where This LeadsThe Linux kernel is one of the most critical systems in modern computing - and one of the least understood. Engineers who can work at this level are rare. This book takes you from understanding the kernel to contributing to it - with a complete capstone subsystem, validated tooling, and a clear path into the Linux kernel community. Start HereThe kernel is not a black box. Open it

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