lkml.org 
[lkml]   [2010]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: How to see kernel pr_err error messages.
From: reg@dwf.com
Date: Sat, Feb 27, 2010 at 03:11:03AM -0700

> Im looking at some kernel code, and there are 'pr_err' error messages in
> it that would help me discover my problem.
>
> However I dont see them printing anywhere.
>
> What do I have to do to see these error messages?

Take a look at 'ignore_loglevel' and 'loglevel' kernel parameters in
<Documentation/kernel-parameters.txt> depending on what exactly you want
to achieve.

> A search with GOOGLE and a grep of the code wasnt too useful, but
> it seems possible that I need to set
>
> #define CONFIG_DEBUG
>
> Is that true? I see a lot of <something>_DEBUGs in the .config file
> but no simple CONFIG_DEBUG that is commented out.

I think this is referring to pr_debug() calls. Those get called when you
add

#define DEBUG

to the file containing them. Otherwise they're optimized away.

--
Regards/Gruss,
Boris.


\
 
 \ /
  Last update: 2010-02-27 13:11    [W:0.071 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site