useful linux kernel debug options to turn on

Question

What are some of the non-default kernel debug config options that one should add to a standard kernel config?

2.6.x kernels seem to enable debugging support by default but with a basic set of options. I am curious to hear whether there are additional options that should be turned on to aid analysis of kdump vmcores.

Answer 1

LDD3 CHAPTER 4 mentioned many debug configurations, here is the pdf file: http://lwn.net/images/pdf/LDD3/ch04.pdf

I am not sure whether it is helpful for kdump vmcores or not.

Answer 2

For a slightly more recent list of kernel debugging options than that of LDD3 Chapter 4, see the Fedora Kernel Debugging Strategy page.