The Art of Linux Kernel Design : Illustrating the Operating System Design Principle and Implementation (Paperback)

From Power-Up to the Main Function

Loading BIOS, Constructing Interrupt Vector Table, and Activating

Interrupt Service Routines in the Real Mode

Loading the OS Kernel and Preparing for the Protected Mode

Transfer to 32-bit Mode and Prepare for the Main Function

Summary

Set Root Device 2 and Hard Disk

Set Up Physical Memory Layout, Buffer Memory, Ramdisk, and Main Memory

Ramdisk Setup and Initialization

Initialization of the Memory Management Structure mem_map

Hooking the Interrupt Service Program

Initialize the Request Structure of the Block Device

Binding with the Interrupt Service Routine of Peripherals and Establishing the Human?Computer Interaction Interface

Time Setting

Initialize Process 0

Initialize the Buffer Management Structure

Initialize the Hard Disk

Initialize the Floppy Disk

Enable the Interrupt

Process 0 Moves from Privilege Level 0 to 3 and Becomes a Real Process

Creation of Process 1

Kernel Schedules a Process for the First Time

Turn to Process 1 to Execute

Open the Terminal Device File and Copy the File Handle

Fork Process 2 and Switch to Process 2 to Execute

The System Gets to the Idle State

Install the File System

Opening a File

Reading a File

Creating a New File

Writing a File

Modifying a File

Closing a File

Deleting a File

Linear Address Protection

Paging

When to Apply the Process to a New Page and When You Should Not

Map the New Application Page to the Linear Address in the Process

Complete Process of User Process from Creation to Exit

Multiple User Processes Run Concurrently

Function of Buffer

Structure of Buffer

The Function of b_dev, b_blocknr, and Request

Function of Uptodate and Dirt

Function of the Count, Lock, Wait, Request

Example 1: Process Waiting Queue of Buffer Block

Overall Look at the Buffer Block and the Request Item

Example 2: Comprehensive Examples of Multiprocess Operating File

Pipe Mechanism

Signal Mechanism

Summary

Run a Simple Program to See What the Operating System Has Done

Thoughts on the Design of the Operating System: Master-Slave

Mechanism

Three Key Techniques in Realizing the Master

Decisive Factor in Establishing the Master-Slave Mechanism: The Initiative

Relationship Between Software and Hardware: Host and Process, Peripherals and File

Parent and Child Processes Sharing Page

Operating System’s Global Interrupt and the Process’s Local Interrupt: Signal

Summary

Conclusion