#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 */
printk(KERN_EMERG? “WelCome”)
