printk

/* Some more example of the macros for the Alert msg are */

#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 */