5/26/2023 0 Comments Device driver![]() ![]() The basic way is to add the code to the kernel source tree and recompile the kernel.Ī more efficient way is to do this is by adding code to the kernel while it is running. They extend the functionality of the kernel without the need to reboot the system.Ĭustom codes can be added to Linux kernels via two methods. Kernel modules are pieces of code that can be loaded and unloaded into the kernel upon demand. User Space is where the user applications are executed. Kernel space is where the kernel (i.e., the core of the operating system) executes (i.e., runs) and provides its services. The below image will give you a basic understanding. ![]() These two components interact through a System Call Interface – which is a predefined and matured interface to Linux Kernel for Userspace applications. Linux is primarily divided into User Space & Kernel Space. Users can modify and create variations of the source code, known as distributions, for computers and other devices. ![]() Linux is a free open-source operating system (OS) based on UNIX that was created in 1991 by Linus Torvalds. Linux Device Driver Tutorial – Introduction Linux – Introduction You can also find all the Linux device driver’s video playlists here. You can find a video explanation of this tutorial here. We will focus on the basics in this tutorial. This is the Linux Device Driver Tutorial Part 1 – Introduction.īefore we start with programming, it’s always better to know some basic things about Linux and its drivers. ![]() The aim of this series is to provide easy and practical examples that anyone can understand. This article is the Series on Linux Device Drivers and carries the discussion on character drivers and their implementation. ![]()
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