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Built-In Code Versus Loadable Kernel Modules

Kernel features can be compiled straight into the kernel image or built as a separate file you load while the system is running. Built-in code is always present but means a rebuild and a reboot to change it; a loadable module can be swapped out in seconds. For development you almost always want the loadable form. Choosing the wrong one is why your change sometimes seems to have no effect until you reboot.

Questions this Concept answers

Why do driver developers prefer the loadable form while they are still developing?

jeremy Text

What Does 'm' Mean in Kernel Configuration Files? Explaining CONFIG_UNIX=m

A Linux kernel feature can be included in one of three ways, and the kernel configuration file records which. Set to y it is compiled straight into the kernel image and is always present, which also …