From mboxrd@z Thu Jan  1 00:00:00 1970
From: enjoymindful@gmail.com (Real Name)
Date: Wed, 25 Jun 2014 14:34:11 +0800
Subject: about pr_debug
In-Reply-To: <CA+5jrfk8gOgMOKiWxDHC4Yz4EE7Rdz6LLZhJAQCEKz67=rbyNg@mail.gmail.com>
References: <CA+5jrfk8gOgMOKiWxDHC4Yz4EE7Rdz6LLZhJAQCEKz67=rbyNg@mail.gmail.com>
Message-ID: <20140625063411.GA8028@name>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Wed, Jun 25, 2014 at 02:09:40PM +0800, lx wrote:
> hi all:
>        I'm confused with pr_debug. My codes is:
> ###########################################
> #include <linux/module.h>
> #include <linux/kernel.h>
> 
> static int __init init_page_dir(void)
> {
>     pr_debug("Hello world\n");
>     return 0;
> }
> 
> static void __exit exit_page_dir(void)
> {
>     pr_debug("\nGoodbye now...\n\n");
> }
> 
> MODULE_LICENSE("GPL");
> module_init(init_page_dir);
> module_exit(exit_page_dir);
> ###########################################
> I make it, and insmod it. But the messages of "Hello world" don't show.
> 
> So, My question is If i want to fix it , I should set the
> *DEFAULT_MESSAGE_LOGLEVEL
> and *
> *rebuild the kernel ?*
>

https://www.kernel.org/doc/local/pr_debug.txt

> My kernel version is:2.6.18
> OS is: centOS
> 
> Thank you.

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