Re: [mpls-linux-general] how to debug

[<EMI...@te...>]

Hi list,

I have been reading some information about how to debug the=20
kernel and there are 3 basic ways:
1.-  Remote kernel debugging using=20
gdb and using 2 computers linked via ethenet.
2.- Using kgdb, but I do=20
not know if I can install it in a Kernel 2.6.9 where I have 1.946.
2.-=20
The User-mode-linux.

I want to see what function are called and what=20
commands are executed when for example you do a ping with MPLS 1.946,=20
and other things with MPLS 1.946.
Right now, I have 6 computers with=20
fedora core 2 with 2 kernel: 2.6.5; and 2.6.9, which is  the one where =20
I installed 1.946.

Which method would you suggest?
If it is the user-
mode-linux,  the host kernel would be the 2.6.5 and the guest kernel=20
the 2.6.9 with the MPLS 1.946. If I do that, will I be able to do a=20
ping to another computer? Because I have heard that it is a bit=20
difficult to configure uml with networking support, how do I do that?
Do you know any page where I can find the steps I have to to follow?

Thank you very much



----Mensaje original----
De: jl...@mi...
Recibido: 03/10/2005 19:19
Para: "EMI...@te..."
<EMI...@te...>
CC: <mpl...@li....
net>
Asunto: Re: [mpls-linux-general] how to debug

Welcome to the=20
world of kernel programming.

To help speed up the process I do much of=20
my initial development testing
using user-mode-linux.  Where my guest=20
kernel is the development kernel.
With UML you can run gdb or other=20
debuggers against a guest kernel.

On Mon, Oct 03, 2005 at 07:03:18PM=20
+0200, EMI...@te... wrote:
> Hi list,
>=20
> I was wondering=20
what you do to "debug" the MPLS functions: do=20
> you have
> some=20
program to see which functions and what commands are=20
> executed
>=20
whenever for example you do a ping?
> I do it with "printk()" to=20
> see=20
it but it is very tedious and every
> time I want to add a "printk()"=20
> I have to recompile the kernel.=20
> Do you use any other method?
>=20
>=20
Thank=20
> you very much
>=20
>=20
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--=20
James R. Leu
jl...@mi...





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