Messages in this thread | | | Date | Sat, 27 Feb 2010 13:06:30 +0100 | From | Borislav Petkov <> | Subject | Re: How to see kernel pr_err error messages. |
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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.
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