Debugging messages

Debugging messages

[Julian Stecklina]

Hello,

I would like to include some debugging messages into the hypervisor 
(logging certain hypercalls with their arguments) and am unsure how. 
When I call printk where does its output go? Is there a better way to do 
this?

Regards,
Julian

debugging messages

[patrick andrieux]

Hi list !

I'm trying to find out where debug messages are print out, like
ccid3_pr_debug(...), DCCP_WARN(...), ....
I compiled the latest kernel 2.6.20-3, with all DCCP options enabled
(DCCP debug messages, ccid2/3 debugging messages, ....) and with all
DCCP patches applied. But I still don't find any messages in log from
/var/log/ .
Did I missed something ?
How can I get these messages ?

Thanks.

regards,
Patrick.

Re: debugging messages

[Ian McDonald]

On 3/20/07, patrick andrieux <patrick.andrieux@gmail.com> wrote:
> Hi list !
>
> I'm trying to find out where debug messages are print out, like
> ccid3_pr_debug(...), DCCP_WARN(...), ....
> I compiled the latest kernel 2.6.20-3, with all DCCP options enabled
> (DCCP debug messages, ccid2/3 debugging messages, ....) and with all
> DCCP patches applied. But I still don't find any messages in log from
> /var/log/ .
> Did I missed something ?
> How can I get these messages ?
>
> Thanks.
>
> regards,
> Patrick.
> -

Hi there Patrick,

First of all you need to turn on debugging when you load the module
e.g. put something like this in /etc/modprobe.d/network
options dccp_ccid3 ccid3_debug=1
options dccp dccp_debug=1

and then make sure you're catching debug message in your
/etc/syslog.conf file with a line something like:
*.*         -/var/log/syslog

NB These file locations are for Debian. Look for the equivalent in your distro.

Ian
-- 
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Blog: http://iansblog.jandi.co.nz
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