Hi Kanhnu,
have you tried raising the priority of the printk messages ?
The loglevel
The kernel routine printk() will only print a message on
the console, if it has a loglevel less than the value of
the variable console_loglevel (initially DEFAULT_CON-
SOLE_LOGLEVEL (7), but set to 10 if the kernel commandline
contains the word `debug', and to 15 in case of a kernel
fault - the 10 and 15 are just silly, and equivalent to
8). This variable is set (to a value in the range 1-8) by
the call syslog (8,dummy,value). The calls syslog
(type,dummy,idummy) with type equal to 6 or 7, set it to 1
(kernel panics only) or 7 (all except debugging messages),
respectively.
Every text line in a message has its own loglevel. This
level is DEFAULT_MESSAGE_LOGLEVEL - 1 (6) unless the line
starts with <d> where d is a digit in the range 1-7, in
which case the level is d. The conventional meaning of the
loglevel is defined in <linux/kernel.h> as follows:
#define KERN_EMERG "<0>" /* system is unusable */
#define KERN_ALERT "<1>" /* action must be taken immediately */
#define KERN_CRIT "<2>" /* critical conditions */
#define KERN_ERR "<3>" /* error conditions */
#define KERN_WARNING "<4>" /* warning conditions */
#define KERN_NOTICE "<5>" /* normal but significant condition */
#define KERN_INFO "<6>" /* informational */
#define KERN_DEBUG "<7>" /* debug-level messages */
MiC
----- Original Message -----
From: "kanhu rauta" <kanhu2004@xxxxxxxxxxxxxx>
To: <redhat-list@xxxxxxxxxx>
Sent: Wednesday, July 14, 2004 12:13 PM
Subject: SUB:HELP FOR LOG/MESSAGE
Dear sir/madam,
SORRY FOR MINE POOR ENGLISH.
>i am doing some kernel code modification as for mine requirement, for mine
debugging perpose i used the printk() statement in the codes.but some times
mine system hangs,at that time i unable to get the print stastments.in the
/var/log/messages.so i did not getting whats the problem
> weither any other place or techineque to get the log/messages at the time
system hangs.
any ideia regarding this is welcome
With Regards
kanhu
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