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  • Mastering Linux Kernel Development
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Mastering Linux Kernel Development

Mastering Linux Kernel Development

By : CH Raghav Maruthi
2.9 (10)
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Mastering Linux Kernel Development

Mastering Linux Kernel Development

2.9 (10)
By: CH Raghav Maruthi

Overview of this book

Mastering Linux Kernel Development looks at the Linux kernel, its internal arrangement and design, and various core subsystems, helping you to gain significant understanding of this open source marvel. You will look at how the Linux kernel, which possesses a kind of collective intelligence thanks to its scores of contributors, remains so elegant owing to its great design. This book also looks at all the key kernel code, core data structures, functions, and macros, giving you a comprehensive foundation of the implementation details of the kernel’s core services and mechanisms. You will also look at the Linux kernel as well-designed software, which gives us insights into software design in general that are easily scalable yet fundamentally strong and safe. By the end of this book, you will have considerable understanding of and appreciation for the Linux kernel.
Table of Contents (12 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
Comprehending Processes, Address Space, and Threads
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Comprehending Processes, Address Space, and Threads
Processes
Process descriptors
Kernel stack
The issue of stack overflow
Process creation
Kernel threads
Process status and termination
Namespaces and cgroups
Summary
2
Deciphering the Process Scheduler
Deciphering the Process Scheduler
Process schedulers
Linux process scheduler design
Runqueue
The scheduler's entry point
Process priorities
Scheduler classes
Completely Fair Scheduling class (CFS)
Real-time scheduling class
Scheduler related system calls
Process preemption
Summary
3
Signal Management
Signal Management
Signals
Signal-management APIs
Signal data structures
Signal generation and delivery
Restarting interrupted system calls
Summary
4
Memory Management and Allocators
Memory Management and Allocators
Initialization operations
Zones and nodes
Memory allocators
Summary
5
Filesystems and File I/O
Filesystems and File I/O
Filesystem - high-level view
Filesystems in the Linux kernel
Common filesystem interface
Special filesystems
Summary
6
Interprocess Communication
Interprocess Communication
Pipes and FIFOs
Message queues
Shared memory
Semaphores
Summary
7
Virtual Memory Management
Virtual Memory Management
Process address space
Summary
8
Kernel Synchronization and Locking
Kernel Synchronization and Locking
Atomic operations
Introducing exclusion locks
Summary
9
Interrupts and Deferred Work
Interrupts and Deferred Work
Interrupt signals and vectors
Programmable interrupt controller
High-level interrupt-management interfaces
Deferred work
Summary
10
Clock and Time Management
Clock and Time Management
Time representation
Hardware abstraction
Linux timekeeping data structures, macros, and helper routines
Software timers and delay functions
POSIX clocks
Summary
11
Module Management
Module Management
Kernel modules
Summary

Comprehending Processes, Address Space, and Threads

When kernel services are invoked in the current process context, its layout throws open the right path for exploring kernels in more detail. Our effort in this chapter is centered around comprehending processes and the underlying ecosystem the kernel provides for them. We will explore the following concepts in this chapter:

  • Program to process
  • Process layout
  • Virtual address spaces
  • Kernel and user space
  • Process APIs
  • Process descriptors
  • Kernel stack management
  • Threads
  • Linux thread API
  • Data structures
  • Namespace and cgroups
End of Section 1
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