[$] Shrinking the kernel with link-time garbage collection

One of the keys to fitting the Linux kernel into a small system is toremove any code that is not needed. The kernel's configuration systemallows that to be done on a large scale, but it still results in thebuilding of a kernel containing many smaller chunks of unused code anddata. With a bit of work, though, the compiler and linker can be made towork together to garbage-collect much of that unused code and recover thewasted space for more important uses.<p>Click below (subscribers only) for a detailed article from Nicolas Pitre onhow to use link-time garbage collection to create a smaller kernel image.