kernel/printk/printk.c

427  * /dev/kmsg exports the structured data in the following line format:
450 /* the next printk record to read by syslog(READ) or /proc/kmsg */
592 	 * If this is from /proc/kmsg and we've already opened it, then we've  in check_syslog_permissions()
701 /* /dev/kmsg - userspace message inject/listen interface */
869 		 * like issued by 'dmesg -c'. Reading /dev/kmsg itself  in devkmsg_llseek()
1786 			 * Short-cut for poll(/"proc/kmsg") which simply checks  in do_syslog()
4030  * kmsg_dump_unregister - unregister a kmsg dumper.
4079  * retrieve the kmsg records with kmsg_dump_get_line() or
4108  * kmsg_dump_get_line - retrieve one kmsg log line
4109  * @iter: kmsg dump iterator
4115  * Start at the beginning of the kmsg buffer, with the oldest kmsg
4164  * kmsg_dump_get_buffer - copy kmsg log lines
4165  * @iter: kmsg dump iterator
4171  * Start at the end of the kmsg buffer and fill the provided buffer
4172  * with as many of the *youngest* kmsg records that fit into it.
4173  * If the buffer is large enough, all available kmsg records will be
4249  * @iter: kmsg dump iterator