how to find out what modules are in my kernel

Culbert · 09-06-2003, 11:26 PM

I'm going to attempt my first kernel rebuild. I've read how to do it and it seems fairly simple. Basically you just follow the steps and then decide whether to load something into the kernel or as a loadable module. Seems simple enough.... Just to be safe however, I want to make sure I copy down all of the stuff that starts when I boot as well as all the stuff that I have set as a loadable module. How do I access this info?

Thanks,

Linux Newb

DavidPhillips · 09-07-2003, 12:15 AM

by running

lsmod

you can see the modules you are using at the moment.

most distros will have the current config file in /boot

you could start by loading it and go through it deciding what you do not need.

always save your working kernel, and a working boot disk.

your boot disk depends on the files in /lib/modules/2.4???? that were used to create it, so keep those unless you make a new boot disk.

keep copys of the config files as you go.

Umasankar · 09-08-2003, 06:24 AM

well. run nm /boot/vmlinuz or look at the System.map file under /boot.This will show you the list of functions in the kernel from which you can deduce the list of modules compiled into the kernel.

Umasankar · 09-08-2003, 06:25 AM

As vmlinuz is a compressed image, please run nm /boot/vmlinux.

/bin/bash · 09-08-2003, 10:26 AM

grep \=m /usr/src/linux/.config
or
grep \=m /boot/config

/bin/bash · 09-08-2003, 10:30 AM

If you have a /boot/config file then after you install the kernel sources and do make mrproper then go to /usr/src/linux and do this:
cp /boot/config ./.config
make oldconfig

That will give you an exact match for your distros kernel, minus any patches they apply, of course.