kernel/printk/printk.c

78  * Low level drivers may need that to know if they can schedule in
414  * the standard userspace syslog level and syslog facility. The usual kernel
444  *   record.info.level              = 3 (LOG_ERR)
454  *   "<level>,<sequnum>,<timestamp>,<contflag>[,additional_values, ... ];<message text>\n"
680 			 (info->facility << 3) | info->level, info->seq,
749 int devkmsg_emit(int facility, int level, const char *fmt, ...)
755 	r = vprintk_emit(facility, level, NULL, fmt, args);
764 	int level = default_message_loglevel;
797 	 * level, the rest are the log facility.
810 			level = LOG_LEVEL(u);
818 	devkmsg_emit(facility, level, "%s", line);
1147 	dest_r.info->level = r->info->level;
1309 static bool suppress_message_printing(int level)
1311 	return (level >= console_loglevel && !ignore_loglevel);
1337 static void boot_delay_msec(int level)
1342 			suppress_message_printing(level);
1364 static inline void boot_delay_msec(int level)
1372 static size_t print_syslog(unsigned int level, char *buf)
1374 	return sprintf(buf, "<%u>", level);
1404 		len = print_syslog((info->facility << 3) | info->level, buf);
1818 	/* Set level of messages printed to console */
2086  * more than 1 level of recursion (allowing, for example, printk() to trigger
2144 static inline void printk_delay(int level)
2146 	boot_delay_msec(level);
2165  * printk_parse_prefix - Parse level and control flags.
2168  * @level:    A pointer to the current level value, will be updated.
2171  * @level may be NULL if the caller is not interested in the parsed value.
2172  * Otherwise the variable pointed to by @level must be set to
2179  * Return: The length of the parsed level and control flags.
2181 u16 printk_parse_prefix(const char *text, int *level,
2194 			if (level && *level == LOGLEVEL_DEFAULT)
2195 				*level = kern_level - '0';
2224 	/* Strip log level and control flags. */
2241 int vprintk_store(int facility, int level,
2285 	/* Extract log level or control flags. */
2287 		printk_parse_prefix(&prefix_buf[0], &level, &flags);
2289 	if (level == LOGLEVEL_DEFAULT)
2290 		level = default_message_loglevel;
2341 	r.info->level = level & 7;
2394 asmlinkage int vprintk_emit(int facility, int level,
2418 	if (level == LOGLEVEL_SCHED) {
2419 		level = LOGLEVEL_DEFAULT;
2424 	printk_delay(level);
2426 	printed_len = vprintk_store(facility, level, dev_info, fmt, args);
3014 	 * has level above the console loglevel.
3016 	if (!force_con && may_suppress && suppress_message_printing(r.info->level))