5. Linux Kernel Modules
Linux Kernel Modules are critical for extending the functionality of the Linux kernel without necessitating a reboot or recompilation. These modules enhance the kernel's capabilities to manage hardware, implement network protocols, and add support for various filesystems. This chapter covers the types of kernel modules, their architecture, loading and unloading commands, as well as potential issues encountered while working with them.
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What we have learnt
- Kernel modules are dynamically loadable pieces of code that extend the functionality of the Linux kernel.
- Key types of kernel modules include device drivers, filesystem modules, and network protocol modules.
- The kernel module architecture supports efficient management of system resources through dynamic loading and unloading.
Key Concepts
- -- Kernel Module
- A piece of code that can be loaded into the Linux kernel at runtime to extend its functionality.
- -- Device Driver
- A kernel module that enables the operating system to communicate with hardware devices.
- -- Dynamic Loading
- The capability of loading and unloading kernel modules without rebooting the system.
- -- Makefile
- A file containing a set of directives used by the 'make' build automation tool to compile the kernel module.
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