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Professional Linux Kernel Architecture.pdf
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上传时间: 2009-02-05
详细说明： Publisher: Wrox Page : 1371 This book discusses the concepts, structure, and implementation of the Linux kernel. In particular, the individual chapters cover the following topics: ❑ Chapter 1 provides an overview of the Linux kernel and describes the big picture that is investigated more closely in the following chapters. ❑ Chapter 2 talks about the basics of multitasking, scheduling, and process management, and investigates how these fundamental techniques and abstractions are implemented. ❑ Chapter 3 discusses how physical me mory is managed. Both the interaction with hardware and the in-kernel distribution of RAM via the buddy system and the slab allocator are covered. ❑ Chapter 4 proceeds to describe how userland processes experience virtual memory, and the comprehensive data structures and actions required from the kernel to implement this view. ❑ Chapter 5 introduces the mechanisms required to ensure proper operation of the kernel on multiprocessor systems. Additionally, it covers the related question of how processes can communicate with each other. ❑ Chapter 6 walks you through the means for writing device drivers that are required to add support for new hardware to the kernel. ❑ Chapter 7 explains how modules allow for dynamically adding new functionality to the kernel. ❑ Chapter 8 discusses the virtual filesystem, a generic layer of the kernel that allows for supporting a wide range of different filesystems, both physical and virtual. ❑ Chapter 9 describes the extended filesystem family, that is, the Ext2 and Ext3 filesystems that are the standard workhorses of many Linux installations. ❑ Chapter 10 goes on to discuss procfs and sysfs, two filesystems that are not designed to store information, but to present meta-information about the kernel to userland. Additionally, a number of means to ease writing filesystems are presented. ❑ Chapter 11 shows how extended attributes and access control lists that can help to improve system security are implemented. ❑ Chapter 12 discusses the networking implementation of the kernel, with a specific focus on IPv4, TCP, UDP, and netfilter. ❑ Chapter 13 introduces how systems calls that are the standard way to request a kernel action from userland are implemented. ❑ Chapter 14 analyzes how kernel activities are triggered with interrupts, and presents means of deferring work to a later point in time. ❑ Chapter 15 shows how the kernel handles all time-related requirements, both with low and high resolution. ❑ Chapter 16 talks about speeding up kernel operations with the help of the page and buffer caches. ❑ Chapter 17 discusses how cached data in memory are synchronized with their sources on persistent storage devices. ❑ Chapter 18 introduces how page reclaim and swapping work. ...展开收缩
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