[mirror_ubuntu-artful-kernel.git] / include / linux / printk.h

#ifndef __KERNEL_PRINTK__
#define __KERNEL_PRINTK__

#include <linux/init.h>

extern const char linux_banner[];
extern const char linux_proc_banner[];

#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			*/

/* Use the default kernel loglevel */
#define KERN_DEFAULT	"<d>"
/*
 * Annotation for a "continued" line of log printout (only done after a
 * line that had no enclosing \n). Only to be used by core/arch code
 * during early bootup (a continued line is not SMP-safe otherwise).
 */
#define KERN_CONT	"<c>"

static inline int printk_get_level(const char *buffer)
{
	if (buffer[0] == '<' && buffer[1] && buffer[2] == '>') {
		switch (buffer[1]) {
		case '0' ... '7':
		case 'd':	/* KERN_DEFAULT */
		case 'c':	/* KERN_CONT */
			return buffer[1];
		}
	}
	return 0;
}

static inline const char *printk_skip_level(const char *buffer)
{
	if (printk_get_level(buffer)) {
		switch (buffer[1]) {
		case '0' ... '7':
		case 'd':	/* KERN_DEFAULT */
		case 'c':	/* KERN_CONT */
			return buffer + 3;
		}
	}
	return buffer;
}

extern int console_printk[];

#define console_loglevel (console_printk[0])
#define default_message_loglevel (console_printk[1])
#define minimum_console_loglevel (console_printk[2])
#define default_console_loglevel (console_printk[3])

static inline void console_silent(void)
{
	console_loglevel = 0;
}

static inline void console_verbose(void)
{
	if (console_loglevel)
		console_loglevel = 15;
}

struct va_format {
	const char *fmt;
	va_list *va;
};

/*
 * FW_BUG
 * Add this to a message where you are sure the firmware is buggy or behaves
 * really stupid or out of spec. Be aware that the responsible BIOS developer
 * should be able to fix this issue or at least get a concrete idea of the
 * problem by reading your message without the need of looking at the kernel
 * code.
 *
 * Use it for definite and high priority BIOS bugs.
 *
 * FW_WARN
 * Use it for not that clear (e.g. could the kernel messed up things already?)
 * and medium priority BIOS bugs.
 *
 * FW_INFO
 * Use this one if you want to tell the user or vendor about something
 * suspicious, but generally harmless related to the firmware.
 *
 * Use it for information or very low priority BIOS bugs.
 */
#define FW_BUG		"[Firmware Bug]: "
#define FW_WARN		"[Firmware Warn]: "
#define FW_INFO		"[Firmware Info]: "

/*
 * HW_ERR
 * Add this to a message for hardware errors, so that user can report
 * it to hardware vendor instead of LKML or software vendor.
 */
#define HW_ERR		"[Hardware Error]: "

/*
 * Dummy printk for disabled debugging statements to use whilst maintaining
 * gcc's format and side-effect checking.
 */
static inline __printf(1, 2)
int no_printk(const char *fmt, ...)
{
	return 0;
}

extern asmlinkage __printf(1, 2)
void early_printk(const char *fmt, ...);

extern int printk_needs_cpu(int cpu);
extern void printk_tick(void);

#ifdef CONFIG_PRINTK
asmlinkage __printf(5, 0)
int vprintk_emit(int facility, int level,
		 const char *dict, size_t dictlen,
		 const char *fmt, va_list args);

asmlinkage __printf(1, 0)
int vprintk(const char *fmt, va_list args);

asmlinkage __printf(5, 6) __cold
asmlinkage int printk_emit(int facility, int level,
			   const char *dict, size_t dictlen,
			   const char *fmt, ...);

asmlinkage __printf(1, 2) __cold
int printk(const char *fmt, ...);

/*
 * Special printk facility for scheduler use only, _DO_NOT_USE_ !
 */
__printf(1, 2) __cold int printk_sched(const char *fmt, ...);

/*
 * Please don't use printk_ratelimit(), because it shares ratelimiting state
 * with all other unrelated printk_ratelimit() callsites.  Instead use
 * printk_ratelimited() or plain old __ratelimit().
 */
extern int __printk_ratelimit(const char *func);
#define printk_ratelimit() __printk_ratelimit(__func__)
extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
				   unsigned int interval_msec);

extern int printk_delay_msec;
extern int dmesg_restrict;
extern int kptr_restrict;

void log_buf_kexec_setup(void);
void __init setup_log_buf(int early);
#else
static inline __printf(1, 0)
int vprintk(const char *s, va_list args)
{
	return 0;
}
static inline __printf(1, 2) __cold
int printk(const char *s, ...)
{
	return 0;
}
static inline __printf(1, 2) __cold
int printk_sched(const char *s, ...)
{
	return 0;
}
static inline int printk_ratelimit(void)
{
	return 0;
}
static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
					  unsigned int interval_msec)
{
	return false;
}

static inline void log_buf_kexec_setup(void)
{
}

static inline void setup_log_buf(int early)
{
}
#endif

extern void dump_stack(void) __cold;

#ifndef pr_fmt
#define pr_fmt(fmt) fmt
#endif

#define pr_emerg(fmt, ...) \
	printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
#define pr_alert(fmt, ...) \
	printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_crit(fmt, ...) \
	printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_err(fmt, ...) \
	printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warning(fmt, ...) \
	printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warn pr_warning
#define pr_notice(fmt, ...) \
	printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
#define pr_info(fmt, ...) \
	printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#define pr_cont(fmt, ...) \
	printk(KERN_CONT fmt, ##__VA_ARGS__)

/* pr_devel() should produce zero code unless DEBUG is defined */
#ifdef DEBUG
#define pr_devel(fmt, ...) \
	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_devel(fmt, ...) \
	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#endif

/* If you are writing a driver, please use dev_dbg instead */
#if defined(CONFIG_DYNAMIC_DEBUG)
/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
#define pr_debug(fmt, ...) \
	dynamic_pr_debug(fmt, ##__VA_ARGS__)
#elif defined(DEBUG)
#define pr_debug(fmt, ...) \
	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_debug(fmt, ...) \
	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#endif

/*
 * Print a one-time message (analogous to WARN_ONCE() et al):
 */

#ifdef CONFIG_PRINTK
#define printk_once(fmt, ...)			\
({						\
	static bool __print_once;		\
						\
	if (!__print_once) {			\
		__print_once = true;		\
		printk(fmt, ##__VA_ARGS__);	\
	}					\
})
#else
#define printk_once(fmt, ...)			\
	no_printk(fmt, ##__VA_ARGS__)
#endif

#define pr_emerg_once(fmt, ...)					\
	printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
#define pr_alert_once(fmt, ...)					\
	printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_crit_once(fmt, ...)					\
	printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_err_once(fmt, ...)					\
	printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warn_once(fmt, ...)					\
	printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
#define pr_notice_once(fmt, ...)				\
	printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
#define pr_info_once(fmt, ...)					\
	printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
#define pr_cont_once(fmt, ...)					\
	printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
/* If you are writing a driver, please use dev_dbg instead */
#if defined(DEBUG)
#define pr_debug_once(fmt, ...)					\
	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_debug_once(fmt, ...)					\
	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#endif

/*
 * ratelimited messages with local ratelimit_state,
 * no local ratelimit_state used in the !PRINTK case
 */
#ifdef CONFIG_PRINTK
#define printk_ratelimited(fmt, ...)					\
({									\
	static DEFINE_RATELIMIT_STATE(_rs,				\
				      DEFAULT_RATELIMIT_INTERVAL,	\
				      DEFAULT_RATELIMIT_BURST);		\
									\
	if (__ratelimit(&_rs))						\
		printk(fmt, ##__VA_ARGS__);				\
})
#else
#define printk_ratelimited(fmt, ...)					\
	no_printk(fmt, ##__VA_ARGS__)
#endif

#define pr_emerg_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
#define pr_alert_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_crit_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
#define pr_err_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
#define pr_warn_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
#define pr_notice_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
#define pr_info_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
/* no pr_cont_ratelimited, don't do that... */
/* If you are writing a driver, please use dev_dbg instead */
#if defined(DEBUG)
#define pr_debug_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_debug_ratelimited(fmt, ...) \
	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#endif

extern const struct file_operations kmsg_fops;

enum {
	DUMP_PREFIX_NONE,
	DUMP_PREFIX_ADDRESS,
	DUMP_PREFIX_OFFSET
};
extern void hex_dump_to_buffer(const void *buf, size_t len,
			       int rowsize, int groupsize,
			       char *linebuf, size_t linebuflen, bool ascii);
#ifdef CONFIG_PRINTK
extern void print_hex_dump(const char *level, const char *prefix_str,
			   int prefix_type, int rowsize, int groupsize,
			   const void *buf, size_t len, bool ascii);
extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
				 const void *buf, size_t len);
#else
static inline void print_hex_dump(const char *level, const char *prefix_str,
				  int prefix_type, int rowsize, int groupsize,
				  const void *buf, size_t len, bool ascii)
{
}
static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
					const void *buf, size_t len)
{
}

#endif

#endif
Commit	Line	Data
968ab183 LT	1	#ifndef __KERNEL_PRINTK__
	2	#define __KERNEL_PRINTK__
	3
162a7e75 MT	4	#include <linux/init.h>
162a7e75 MT	5
968ab183 LT	6	extern const char linux_banner[];
	7	extern const char linux_proc_banner[];
	8
7d1e91ae JP	9	#define KERN_EMERG "<0>" /* system is unusable */
	10	#define KERN_ALERT "<1>" /* action must be taken immediately */
	11	#define KERN_CRIT "<2>" /* critical conditions */
	12	#define KERN_ERR "<3>" /* error conditions */
	13	#define KERN_WARNING "<4>" /* warning conditions */
	14	#define KERN_NOTICE "<5>" /* normal but significant condition */
	15	#define KERN_INFO "<6>" /* informational */
	16	#define KERN_DEBUG "<7>" /* debug-level messages */
968ab183 LT	17
	18	/* Use the default kernel loglevel */
	19	#define KERN_DEFAULT "<d>"
	20	/*
	21	* Annotation for a "continued" line of log printout (only done after a
	22	* line that had no enclosing \n). Only to be used by core/arch code
	23	* during early bootup (a continued line is not SMP-safe otherwise).
	24	*/
7d1e91ae	25	#define KERN_CONT "<c>"
968ab183	26
acc8fa41 JP	27	static inline int printk_get_level(const char *buffer)
	28	{
	29	if (buffer[0] == '<' && buffer[1] && buffer[2] == '>') {
	30	switch (buffer[1]) {
	31	case '0' ... '7':
	32	case 'd': /* KERN_DEFAULT */
	33	case 'c': /* KERN_CONT */
	34	return buffer[1];
	35	}
	36	}
	37	return 0;
	38	}
	39
	40	static inline const char printk_skip_level(const char buffer)
	41	{
	42	if (printk_get_level(buffer)) {
	43	switch (buffer[1]) {
	44	case '0' ... '7':
	45	case 'd': /* KERN_DEFAULT */
	46	case 'c': /* KERN_CONT */
	47	return buffer + 3;
	48	}
	49	}
	50	return buffer;
	51	}
	52
968ab183 LT	53	extern int console_printk[];
	54
	55	#define console_loglevel (console_printk[0])
	56	#define default_message_loglevel (console_printk[1])
	57	#define minimum_console_loglevel (console_printk[2])
	58	#define default_console_loglevel (console_printk[3])
	59
a9747cc3 JP	60	static inline void console_silent(void)
	61	{
	62	console_loglevel = 0;
	63	}
	64
	65	static inline void console_verbose(void)
	66	{
	67	if (console_loglevel)
	68	console_loglevel = 15;
	69	}
	70
968ab183 LT	71	struct va_format {
	72	const char *fmt;
	73	va_list *va;
	74	};
	75
	76	/*
	77	* FW_BUG
	78	* Add this to a message where you are sure the firmware is buggy or behaves
	79	* really stupid or out of spec. Be aware that the responsible BIOS developer
	80	* should be able to fix this issue or at least get a concrete idea of the
	81	* problem by reading your message without the need of looking at the kernel
	82	* code.
	83	*
	84	* Use it for definite and high priority BIOS bugs.
	85	*
	86	* FW_WARN
	87	* Use it for not that clear (e.g. could the kernel messed up things already?)
	88	* and medium priority BIOS bugs.
	89	*
	90	* FW_INFO
	91	* Use this one if you want to tell the user or vendor about something
	92	* suspicious, but generally harmless related to the firmware.
	93	*
	94	* Use it for information or very low priority BIOS bugs.
	95	*/
	96	#define FW_BUG "[Firmware Bug]: "
	97	#define FW_WARN "[Firmware Warn]: "
	98	#define FW_INFO "[Firmware Info]: "
	99
	100	/*
	101	* HW_ERR
	102	* Add this to a message for hardware errors, so that user can report
	103	* it to hardware vendor instead of LKML or software vendor.
	104	*/
	105	#define HW_ERR "[Hardware Error]: "
	106
5264f2f7 JP	107	/*
	108	* Dummy printk for disabled debugging statements to use whilst maintaining
	109	* gcc's format and side-effect checking.
	110	*/
b9075fa9	111	static inline __printf(1, 2)
5264f2f7 JP	112	int no_printk(const char *fmt, ...)
	113	{
	114	return 0;
	115	}
	116
b9075fa9	117	extern asmlinkage __printf(1, 2)
5264f2f7 JP	118	void early_printk(const char *fmt, ...);
	119
	120	extern int printk_needs_cpu(int cpu);
	121	extern void printk_tick(void);
	122
968ab183	123	#ifdef CONFIG_PRINTK
7ff9554b KS	124	asmlinkage __printf(5, 0)
	125	int vprintk_emit(int facility, int level,
	126	const char *dict, size_t dictlen,
	127	const char *fmt, va_list args);
	128
b9075fa9	129	asmlinkage __printf(1, 0)
5264f2f7	130	int vprintk(const char *fmt, va_list args);
7ff9554b KS	131
	132	asmlinkage __printf(5, 6) __cold
	133	asmlinkage int printk_emit(int facility, int level,
	134	const char *dict, size_t dictlen,
	135	const char *fmt, ...);
	136
b9075fa9	137	asmlinkage __printf(1, 2) __cold
5264f2f7	138	int printk(const char *fmt, ...);
968ab183	139
3ccf3e83 PZ	140	/*
	141	* Special printk facility for scheduler use only, _DO_NOT_USE_ !
	142	*/
	143	__printf(1, 2) __cold int printk_sched(const char *fmt, ...);
	144
968ab183 LT	145	/*
	146	* Please don't use printk_ratelimit(), because it shares ratelimiting state
	147	* with all other unrelated printk_ratelimit() callsites. Instead use
	148	* printk_ratelimited() or plain old __ratelimit().
	149	*/
	150	extern int __printk_ratelimit(const char *func);
	151	#define printk_ratelimit() __printk_ratelimit(__func__)
	152	extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	153	unsigned int interval_msec);
	154
	155	extern int printk_delay_msec;
	156	extern int dmesg_restrict;
455cd5ab	157	extern int kptr_restrict;
968ab183	158
968ab183	159	void log_buf_kexec_setup(void);
162a7e75	160	void __init setup_log_buf(int early);
968ab183	161	#else
b9075fa9	162	static inline __printf(1, 0)
5264f2f7 JP	163	int vprintk(const char *s, va_list args)
	164	{
	165	return 0;
	166	}
b9075fa9	167	static inline __printf(1, 2) __cold
5264f2f7 JP	168	int printk(const char *s, ...)
	169	{
	170	return 0;
	171	}
3ccf3e83 PZ	172	static inline __printf(1, 2) __cold
	173	int printk_sched(const char *s, ...)
	174	{
	175	return 0;
	176	}
5264f2f7 JP	177	static inline int printk_ratelimit(void)
	178	{
	179	return 0;
	180	}
	181	static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	182	unsigned int interval_msec)
	183	{
	184	return false;
	185	}
968ab183	186
968ab183 LT	187	static inline void log_buf_kexec_setup(void)
	188	{
	189	}
162a7e75 MT	190
	191	static inline void setup_log_buf(int early)
	192	{
	193	}
968ab183 LT	194	#endif
968ab183 LT	195
968ab183 LT	196	extern void dump_stack(void) __cold;
968ab183 LT	197
968ab183 LT	198	#ifndef pr_fmt
	199	#define pr_fmt(fmt) fmt
	200	#endif
	201
	202	#define pr_emerg(fmt, ...) \
a3f938bf	203	printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
968ab183	204	#define pr_alert(fmt, ...) \
a3f938bf	205	printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
968ab183	206	#define pr_crit(fmt, ...) \
a3f938bf	207	printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
968ab183	208	#define pr_err(fmt, ...) \
a3f938bf	209	printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
968ab183	210	#define pr_warning(fmt, ...) \
a3f938bf	211	printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	212	#define pr_warn pr_warning
968ab183 LT	213	#define pr_notice(fmt, ...) \
a3f938bf	214	printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
968ab183	215	#define pr_info(fmt, ...) \
a3f938bf	216	printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	217	#define pr_cont(fmt, ...) \
	218	printk(KERN_CONT fmt, ##__VA_ARGS__)
	219
	220	/* pr_devel() should produce zero code unless DEBUG is defined */
	221	#ifdef DEBUG
	222	#define pr_devel(fmt, ...) \
	223	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	224	#else
	225	#define pr_devel(fmt, ...) \
5264f2f7	226	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	227	#endif
	228
	229	/* If you are writing a driver, please use dev_dbg instead */
b558c96f	230	#if defined(CONFIG_DYNAMIC_DEBUG)
968ab183 LT	231	/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
	232	#define pr_debug(fmt, ...) \
	233	dynamic_pr_debug(fmt, ##__VA_ARGS__)
b558c96f JC	234	#elif defined(DEBUG)
	235	#define pr_debug(fmt, ...) \
	236	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	237	#else
968ab183 LT	238	#define pr_debug(fmt, ...) \
5264f2f7	239	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	240	#endif
968ab183 LT	241
16cb839f JP	242	/*
	243	* Print a one-time message (analogous to WARN_ONCE() et al):
	244	*/
	245
	246	#ifdef CONFIG_PRINTK
	247	#define printk_once(fmt, ...) \
	248	({ \
	249	static bool __print_once; \
	250	\
	251	if (!__print_once) { \
	252	__print_once = true; \
	253	printk(fmt, ##__VA_ARGS__); \
	254	} \
	255	})
	256	#else
	257	#define printk_once(fmt, ...) \
	258	no_printk(fmt, ##__VA_ARGS__)
	259	#endif
	260
	261	#define pr_emerg_once(fmt, ...) \
	262	printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
	263	#define pr_alert_once(fmt, ...) \
	264	printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
	265	#define pr_crit_once(fmt, ...) \
	266	printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
	267	#define pr_err_once(fmt, ...) \
	268	printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	269	#define pr_warn_once(fmt, ...) \
	270	printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
	271	#define pr_notice_once(fmt, ...) \
	272	printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
	273	#define pr_info_once(fmt, ...) \
	274	printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	275	#define pr_cont_once(fmt, ...) \
	276	printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
	277	/* If you are writing a driver, please use dev_dbg instead */
	278	#if defined(DEBUG)
	279	#define pr_debug_once(fmt, ...) \
	280	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	281	#else
	282	#define pr_debug_once(fmt, ...) \
	283	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	284	#endif
	285
968ab183 LT	286	/*
	287	* ratelimited messages with local ratelimit_state,
	288	* no local ratelimit_state used in the !PRINTK case
	289	*/
	290	#ifdef CONFIG_PRINTK
6ec42a56 JP	291	#define printk_ratelimited(fmt, ...) \
6ec42a56 JP	292	({ \
968ab183 LT	293	static DEFINE_RATELIMIT_STATE(_rs, \
	294	DEFAULT_RATELIMIT_INTERVAL, \
	295	DEFAULT_RATELIMIT_BURST); \
	296	\
	297	if (__ratelimit(&_rs)) \
	298	printk(fmt, ##__VA_ARGS__); \
	299	})
	300	#else
6ec42a56 JP	301	#define printk_ratelimited(fmt, ...) \
6ec42a56 JP	302	no_printk(fmt, ##__VA_ARGS__)
968ab183 LT	303	#endif
968ab183 LT	304
6ec42a56	305	#define pr_emerg_ratelimited(fmt, ...) \
968ab183	306	printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	307	#define pr_alert_ratelimited(fmt, ...) \
968ab183	308	printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	309	#define pr_crit_ratelimited(fmt, ...) \
968ab183	310	printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	311	#define pr_err_ratelimited(fmt, ...) \
968ab183	312	printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	313	#define pr_warn_ratelimited(fmt, ...) \
968ab183	314	printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	315	#define pr_notice_ratelimited(fmt, ...) \
968ab183	316	printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	317	#define pr_info_ratelimited(fmt, ...) \
968ab183 LT	318	printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	319	/* no pr_cont_ratelimited, don't do that... */
	320	/* If you are writing a driver, please use dev_dbg instead */
	321	#if defined(DEBUG)
6ec42a56	322	#define pr_debug_ratelimited(fmt, ...) \
968ab183 LT	323	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	324	#else
	325	#define pr_debug_ratelimited(fmt, ...) \
5264f2f7	326	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	327	#endif
968ab183 LT	328
e11fea92 KS	329	extern const struct file_operations kmsg_fops;
e11fea92 KS	330
ac83ed68 JP	331	enum {
	332	DUMP_PREFIX_NONE,
	333	DUMP_PREFIX_ADDRESS,
	334	DUMP_PREFIX_OFFSET
	335	};
	336	extern void hex_dump_to_buffer(const void *buf, size_t len,
	337	int rowsize, int groupsize,
	338	char *linebuf, size_t linebuflen, bool ascii);
	339	#ifdef CONFIG_PRINTK
	340	extern void print_hex_dump(const char level, const char prefix_str,
	341	int prefix_type, int rowsize, int groupsize,
	342	const void *buf, size_t len, bool ascii);
	343	extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
	344	const void *buf, size_t len);
	345	#else
	346	static inline void print_hex_dump(const char level, const char prefix_str,
	347	int prefix_type, int rowsize, int groupsize,
	348	const void *buf, size_t len, bool ascii)
	349	{
	350	}
	351	static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
	352	const void *buf, size_t len)
	353	{
	354	}
	355
	356	#endif
	357
968ab183	358	#endif