[deliverable/linux.git] / include / linux / printk.h

#ifndef __KERNEL_PRINTK__
#define __KERNEL_PRINTK__

#include <stdarg.h>
#include <linux/init.h>
#include <linux/kern_levels.h>

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

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

#ifdef CONFIG_EARLY_PRINTK
extern asmlinkage __printf(1, 2)
void early_printk(const char *fmt, ...);
void early_vprintk(const char *fmt, va_list ap);
#else
static inline __printf(1, 2) __cold
void early_printk(const char *s, ...) { }
#endif

#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;

extern void wake_up_klogd(void);

void log_buf_kexec_setup(void);
void __init setup_log_buf(int early);
void dump_stack_set_arch_desc(const char *fmt, ...);
void dump_stack_print_info(const char *log_lvl);
void show_regs_print_info(const char *log_lvl);
#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 wake_up_klogd(void)
{
}

static inline void log_buf_kexec_setup(void)
{
}

static inline void setup_log_buf(int early)
{
}

static inline void dump_stack_set_arch_desc(const char *fmt, ...)
{
}

static inline void dump_stack_print_info(const char *log_lvl)
{
}

static inline void show_regs_print_info(const char *log_lvl)
{
}
#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 defined(DEBUG)
#define pr_devel_once(fmt, ...)					\
	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_devel_once(fmt, ...)					\
	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#endif

/* 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 defined(DEBUG)
#define pr_devel_ratelimited(fmt, ...)					\
	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#else
#define pr_devel_ratelimited(fmt, ...)					\
	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
#endif

/* 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);
#if defined(CONFIG_DYNAMIC_DEBUG)
#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len)	\
	dynamic_hex_dump(prefix_str, prefix_type, 16, 1, buf, len, true)
#else
extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
				 const void *buf, size_t len);
#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
#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

#if defined(CONFIG_DYNAMIC_DEBUG)
#define print_hex_dump_debug(prefix_str, prefix_type, rowsize,	\
			     groupsize, buf, len, ascii)	\
	dynamic_hex_dump(prefix_str, prefix_type, rowsize,	\
			 groupsize, buf, len, ascii)
#else
#define print_hex_dump_debug(prefix_str, prefix_type, rowsize,		\
			     groupsize, buf, len, ascii)		\
	print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize,	\
		       groupsize, buf, len, ascii)
#endif /* defined(CONFIG_DYNAMIC_DEBUG) */

#endif
Commit	Line	Data
	1	#ifndef __KERNEL_PRINTK__
	2	#define __KERNEL_PRINTK__
	3
	4	#include <stdarg.h>
	5	#include <linux/init.h>
	6	#include <linux/kern_levels.h>
	7
	8	extern const char linux_banner[];
	9	extern const char linux_proc_banner[];
	10
	11	static inline int printk_get_level(const char *buffer)
	12	{
	13	if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
	14	switch (buffer[1]) {
	15	case '0' ... '7':
	16	case 'd': /* KERN_DEFAULT */
	17	return buffer[1];
	18	}
	19	}
	20	return 0;
	21	}
	22
	23	static inline const char printk_skip_level(const char buffer)
	24	{
	25	if (printk_get_level(buffer)) {
	26	switch (buffer[1]) {
	27	case '0' ... '7':
	28	case 'd': /* KERN_DEFAULT */
	29	return buffer + 2;
	30	}
	31	}
	32	return buffer;
	33	}
	34
	35	extern int console_printk[];
	36
	37	#define console_loglevel (console_printk[0])
	38	#define default_message_loglevel (console_printk[1])
	39	#define minimum_console_loglevel (console_printk[2])
	40	#define default_console_loglevel (console_printk[3])
	41
	42	static inline void console_silent(void)
	43	{
	44	console_loglevel = 0;
	45	}
	46
	47	static inline void console_verbose(void)
	48	{
	49	if (console_loglevel)
	50	console_loglevel = 15;
	51	}
	52
	53	struct va_format {
	54	const char *fmt;
	55	va_list *va;
	56	};
	57
	58	/*
	59	* FW_BUG
	60	* Add this to a message where you are sure the firmware is buggy or behaves
	61	* really stupid or out of spec. Be aware that the responsible BIOS developer
	62	* should be able to fix this issue or at least get a concrete idea of the
	63	* problem by reading your message without the need of looking at the kernel
	64	* code.
	65	*
	66	* Use it for definite and high priority BIOS bugs.
	67	*
	68	* FW_WARN
	69	* Use it for not that clear (e.g. could the kernel messed up things already?)
	70	* and medium priority BIOS bugs.
	71	*
	72	* FW_INFO
	73	* Use this one if you want to tell the user or vendor about something
	74	* suspicious, but generally harmless related to the firmware.
	75	*
	76	* Use it for information or very low priority BIOS bugs.
	77	*/
	78	#define FW_BUG "[Firmware Bug]: "
	79	#define FW_WARN "[Firmware Warn]: "
	80	#define FW_INFO "[Firmware Info]: "
	81
	82	/*
	83	* HW_ERR
	84	* Add this to a message for hardware errors, so that user can report
	85	* it to hardware vendor instead of LKML or software vendor.
	86	*/
	87	#define HW_ERR "[Hardware Error]: "
	88
	89	/*
	90	* Dummy printk for disabled debugging statements to use whilst maintaining
	91	* gcc's format and side-effect checking.
	92	*/
	93	static inline __printf(1, 2)
	94	int no_printk(const char *fmt, ...)
	95	{
	96	return 0;
	97	}
	98
	99	#ifdef CONFIG_EARLY_PRINTK
	100	extern asmlinkage __printf(1, 2)
	101	void early_printk(const char *fmt, ...);
	102	void early_vprintk(const char *fmt, va_list ap);
	103	#else
	104	static inline __printf(1, 2) __cold
	105	void early_printk(const char *s, ...) { }
	106	#endif
	107
	108	#ifdef CONFIG_PRINTK
	109	asmlinkage __printf(5, 0)
	110	int vprintk_emit(int facility, int level,
	111	const char *dict, size_t dictlen,
	112	const char *fmt, va_list args);
	113
	114	asmlinkage __printf(1, 0)
	115	int vprintk(const char *fmt, va_list args);
	116
	117	asmlinkage __printf(5, 6) __cold
	118	asmlinkage int printk_emit(int facility, int level,
	119	const char *dict, size_t dictlen,
	120	const char *fmt, ...);
	121
	122	asmlinkage __printf(1, 2) __cold
	123	int printk(const char *fmt, ...);
	124
	125	/*
	126	* Special printk facility for scheduler use only, _DO_NOT_USE_ !
	127	*/
	128	__printf(1, 2) __cold int printk_sched(const char *fmt, ...);
	129
	130	/*
	131	* Please don't use printk_ratelimit(), because it shares ratelimiting state
	132	* with all other unrelated printk_ratelimit() callsites. Instead use
	133	* printk_ratelimited() or plain old __ratelimit().
	134	*/
	135	extern int __printk_ratelimit(const char *func);
	136	#define printk_ratelimit() __printk_ratelimit(__func__)
	137	extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	138	unsigned int interval_msec);
	139
	140	extern int printk_delay_msec;
	141	extern int dmesg_restrict;
	142	extern int kptr_restrict;
	143
	144	extern void wake_up_klogd(void);
	145
	146	void log_buf_kexec_setup(void);
	147	void __init setup_log_buf(int early);
	148	void dump_stack_set_arch_desc(const char *fmt, ...);
	149	void dump_stack_print_info(const char *log_lvl);
	150	void show_regs_print_info(const char *log_lvl);
	151	#else
	152	static inline __printf(1, 0)
	153	int vprintk(const char *s, va_list args)
	154	{
	155	return 0;
	156	}
	157	static inline __printf(1, 2) __cold
	158	int printk(const char *s, ...)
	159	{
	160	return 0;
	161	}
	162	static inline __printf(1, 2) __cold
	163	int printk_sched(const char *s, ...)
	164	{
	165	return 0;
	166	}
	167	static inline int printk_ratelimit(void)
	168	{
	169	return 0;
	170	}
	171	static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	172	unsigned int interval_msec)
	173	{
	174	return false;
	175	}
	176
	177	static inline void wake_up_klogd(void)
	178	{
	179	}
	180
	181	static inline void log_buf_kexec_setup(void)
	182	{
	183	}
	184
	185	static inline void setup_log_buf(int early)
	186	{
	187	}
	188
	189	static inline void dump_stack_set_arch_desc(const char *fmt, ...)
	190	{
	191	}
	192
	193	static inline void dump_stack_print_info(const char *log_lvl)
	194	{
	195	}
	196
	197	static inline void show_regs_print_info(const char *log_lvl)
	198	{
	199	}
	200	#endif
	201
	202	extern void dump_stack(void) __cold;
	203
	204	#ifndef pr_fmt
	205	#define pr_fmt(fmt) fmt
	206	#endif
	207
	208	#define pr_emerg(fmt, ...) \
	209	printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
	210	#define pr_alert(fmt, ...) \
	211	printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
	212	#define pr_crit(fmt, ...) \
	213	printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
	214	#define pr_err(fmt, ...) \
	215	printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	216	#define pr_warning(fmt, ...) \
	217	printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
	218	#define pr_warn pr_warning
	219	#define pr_notice(fmt, ...) \
	220	printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
	221	#define pr_info(fmt, ...) \
	222	printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	223	#define pr_cont(fmt, ...) \
	224	printk(KERN_CONT fmt, ##__VA_ARGS__)
	225
	226	/* pr_devel() should produce zero code unless DEBUG is defined */
	227	#ifdef DEBUG
	228	#define pr_devel(fmt, ...) \
	229	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	230	#else
	231	#define pr_devel(fmt, ...) \
	232	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	233	#endif
	234
	235	/* If you are writing a driver, please use dev_dbg instead */
	236	#if defined(CONFIG_DYNAMIC_DEBUG)
	237	/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
	238	#define pr_debug(fmt, ...) \
	239	dynamic_pr_debug(fmt, ##__VA_ARGS__)
	240	#elif defined(DEBUG)
	241	#define pr_debug(fmt, ...) \
	242	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	243	#else
	244	#define pr_debug(fmt, ...) \
	245	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	246	#endif
	247
	248	/*
	249	* Print a one-time message (analogous to WARN_ONCE() et al):
	250	*/
	251
	252	#ifdef CONFIG_PRINTK
	253	#define printk_once(fmt, ...) \
	254	({ \
	255	static bool __print_once; \
	256	\
	257	if (!__print_once) { \
	258	__print_once = true; \
	259	printk(fmt, ##__VA_ARGS__); \
	260	} \
	261	})
	262	#else
	263	#define printk_once(fmt, ...) \
	264	no_printk(fmt, ##__VA_ARGS__)
	265	#endif
	266
	267	#define pr_emerg_once(fmt, ...) \
	268	printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
	269	#define pr_alert_once(fmt, ...) \
	270	printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
	271	#define pr_crit_once(fmt, ...) \
	272	printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
	273	#define pr_err_once(fmt, ...) \
	274	printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	275	#define pr_warn_once(fmt, ...) \
	276	printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
	277	#define pr_notice_once(fmt, ...) \
	278	printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
	279	#define pr_info_once(fmt, ...) \
	280	printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	281	#define pr_cont_once(fmt, ...) \
	282	printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
	283
	284	#if defined(DEBUG)
	285	#define pr_devel_once(fmt, ...) \
	286	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	287	#else
	288	#define pr_devel_once(fmt, ...) \
	289	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	290	#endif
	291
	292	/* If you are writing a driver, please use dev_dbg instead */
	293	#if defined(DEBUG)
	294	#define pr_debug_once(fmt, ...) \
	295	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	296	#else
	297	#define pr_debug_once(fmt, ...) \
	298	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	299	#endif
	300
	301	/*
	302	* ratelimited messages with local ratelimit_state,
	303	* no local ratelimit_state used in the !PRINTK case
	304	*/
	305	#ifdef CONFIG_PRINTK
	306	#define printk_ratelimited(fmt, ...) \
	307	({ \
	308	static DEFINE_RATELIMIT_STATE(_rs, \
	309	DEFAULT_RATELIMIT_INTERVAL, \
	310	DEFAULT_RATELIMIT_BURST); \
	311	\
	312	if (__ratelimit(&_rs)) \
	313	printk(fmt, ##__VA_ARGS__); \
	314	})
	315	#else
	316	#define printk_ratelimited(fmt, ...) \
	317	no_printk(fmt, ##__VA_ARGS__)
	318	#endif
	319
	320	#define pr_emerg_ratelimited(fmt, ...) \
	321	printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
	322	#define pr_alert_ratelimited(fmt, ...) \
	323	printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
	324	#define pr_crit_ratelimited(fmt, ...) \
	325	printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
	326	#define pr_err_ratelimited(fmt, ...) \
	327	printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	328	#define pr_warn_ratelimited(fmt, ...) \
	329	printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
	330	#define pr_notice_ratelimited(fmt, ...) \
	331	printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
	332	#define pr_info_ratelimited(fmt, ...) \
	333	printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	334	/* no pr_cont_ratelimited, don't do that... */
	335
	336	#if defined(DEBUG)
	337	#define pr_devel_ratelimited(fmt, ...) \
	338	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	339	#else
	340	#define pr_devel_ratelimited(fmt, ...) \
	341	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	342	#endif
	343
	344	/* If you are writing a driver, please use dev_dbg instead */
	345	#if defined(DEBUG)
	346	#define pr_debug_ratelimited(fmt, ...) \
	347	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	348	#else
	349	#define pr_debug_ratelimited(fmt, ...) \
	350	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	351	#endif
	352
	353	extern const struct file_operations kmsg_fops;
	354
	355	enum {
	356	DUMP_PREFIX_NONE,
	357	DUMP_PREFIX_ADDRESS,
	358	DUMP_PREFIX_OFFSET
	359	};
	360	extern void hex_dump_to_buffer(const void *buf, size_t len,
	361	int rowsize, int groupsize,
	362	char *linebuf, size_t linebuflen, bool ascii);
	363	#ifdef CONFIG_PRINTK
	364	extern void print_hex_dump(const char level, const char prefix_str,
	365	int prefix_type, int rowsize, int groupsize,
	366	const void *buf, size_t len, bool ascii);
	367	#if defined(CONFIG_DYNAMIC_DEBUG)
	368	#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
	369	dynamic_hex_dump(prefix_str, prefix_type, 16, 1, buf, len, true)
	370	#else
	371	extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
	372	const void *buf, size_t len);
	373	#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
	374	#else
	375	static inline void print_hex_dump(const char level, const char prefix_str,
	376	int prefix_type, int rowsize, int groupsize,
	377	const void *buf, size_t len, bool ascii)
	378	{
	379	}
	380	static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
	381	const void *buf, size_t len)
	382	{
	383	}
	384
	385	#endif
	386
	387	#if defined(CONFIG_DYNAMIC_DEBUG)
	388	#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
	389	groupsize, buf, len, ascii) \
	390	dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
	391	groupsize, buf, len, ascii)
	392	#else
	393	#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
	394	groupsize, buf, len, ascii) \
	395	print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \
	396	groupsize, buf, len, ascii)
	397	#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
	398
	399	#endif