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How is code added to Linux?
Custom codes can be added to Linux kernels via two methods. The basic way is to add the code to the kernel source tree and recompile the kernel. This process is called loading the module, where module refers to the code that we want to add to the kernel.
Why is formatting your code important Linux?
After all, code formatting does not affect memory use, execution speed or anything else a normal user of the kernel would see. Because the number of developers that look at the Linux kernel code is very large, it is in the best interest for the project to have a consistent style guideline.
What is the kernel used for?
The kernel performs its tasks, such as running processes, managing hardware devices such as the hard disk, and handling interrupts, in this protected kernel space. In contrast, application programs like browsers, word processors, or audio or video players use a separate area of memory, user space.
Why are there so many indentations in the Linux kernel?
Now, some people will claim that having 8-character indentations makes the code move too far to the right, and makes it hard to read on a 80-character terminal screen. The answer to that is that if you need more than 3 levels of indentation, you’re screwed anyway, and should fix your program.
When to use spaces in the Linux kernel?
Linux kernel style for use of spaces depends (mostly) on function-versus-keyword usage. Use a space after (most) keywords.
What are the rules for coding style in Linux?
Coding style is all about readability and maintainability using commonly available tools. The preferred limit on the length of a single line is 80 columns. Statements longer than 80 columns should be broken into sensible chunks, unless exceeding 80 columns significantly increases readability and does not hide information.
How to avoid braces in Linux coding style?
Don’t use commas to avoid using braces: Always uses braces for multiple statements: Don’t put multiple assignments on a single line either. Kernel coding style is super simple. Avoid tricky expressions. Outside of comments, documentation and except in Kconfig, spaces are never used for indentation, and the above example is deliberately broken.