[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>
#include <linux/linkage.h>
#include <linux/cache.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 asmlinkage 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

#include <linux/dynamic_debug.h>

/* 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 __read_mostly;			\
								\
	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(CONFIG_DYNAMIC_DEBUG)
/* descriptor check is first to prevent flooding with "callbacks suppressed" */
#define pr_debug_ratelimited(fmt, ...)					\
do {									\
	static DEFINE_RATELIMIT_STATE(_rs,				\
				      DEFAULT_RATELIMIT_INTERVAL,	\
				      DEFAULT_RATELIMIT_BURST);		\
	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);			\
	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) &&	\
	    __ratelimit(&_rs))						\
		__dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__);	\
} while (0)
#elif 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
968ab183 LT	1	#ifndef __KERNEL_PRINTK__
	2	#define __KERNEL_PRINTK__
	3
1b2c289b	4	#include <stdarg.h>
162a7e75	5	#include <linux/init.h>
314ba352	6	#include <linux/kern_levels.h>
154c2670	7	#include <linux/linkage.h>
c28aa1f0	8	#include <linux/cache.h>
162a7e75	9
968ab183 LT	10	extern const char linux_banner[];
	11	extern const char linux_proc_banner[];
	12
acc8fa41 JP	13	static inline int printk_get_level(const char *buffer)
acc8fa41 JP	14	{
04d2c8c8	15	if (buffer[0] == KERN_SOH_ASCII && buffer[1]) {
acc8fa41 JP	16	switch (buffer[1]) {
	17	case '0' ... '7':
	18	case 'd': /* KERN_DEFAULT */
acc8fa41 JP	19	return buffer[1];
	20	}
	21	}
	22	return 0;
	23	}
	24
	25	static inline const char printk_skip_level(const char buffer)
	26	{
	27	if (printk_get_level(buffer)) {
	28	switch (buffer[1]) {
	29	case '0' ... '7':
	30	case 'd': /* KERN_DEFAULT */
04d2c8c8	31	return buffer + 2;
acc8fa41 JP	32	}
	33	}
	34	return buffer;
	35	}
	36
968ab183 LT	37	extern int console_printk[];
	38
	39	#define console_loglevel (console_printk[0])
	40	#define default_message_loglevel (console_printk[1])
	41	#define minimum_console_loglevel (console_printk[2])
	42	#define default_console_loglevel (console_printk[3])
	43
a9747cc3 JP	44	static inline void console_silent(void)
	45	{
	46	console_loglevel = 0;
	47	}
	48
	49	static inline void console_verbose(void)
	50	{
	51	if (console_loglevel)
	52	console_loglevel = 15;
	53	}
	54
968ab183 LT	55	struct va_format {
	56	const char *fmt;
	57	va_list *va;
	58	};
	59
	60	/*
	61	* FW_BUG
	62	* Add this to a message where you are sure the firmware is buggy or behaves
	63	* really stupid or out of spec. Be aware that the responsible BIOS developer
	64	* should be able to fix this issue or at least get a concrete idea of the
	65	* problem by reading your message without the need of looking at the kernel
	66	* code.
	67	*
	68	* Use it for definite and high priority BIOS bugs.
	69	*
	70	* FW_WARN
	71	* Use it for not that clear (e.g. could the kernel messed up things already?)
	72	* and medium priority BIOS bugs.
	73	*
	74	* FW_INFO
	75	* Use this one if you want to tell the user or vendor about something
	76	* suspicious, but generally harmless related to the firmware.
	77	*
	78	* Use it for information or very low priority BIOS bugs.
	79	*/
	80	#define FW_BUG "[Firmware Bug]: "
	81	#define FW_WARN "[Firmware Warn]: "
	82	#define FW_INFO "[Firmware Info]: "
	83
	84	/*
	85	* HW_ERR
	86	* Add this to a message for hardware errors, so that user can report
	87	* it to hardware vendor instead of LKML or software vendor.
	88	*/
	89	#define HW_ERR "[Hardware Error]: "
	90
5264f2f7 JP	91	/*
	92	* Dummy printk for disabled debugging statements to use whilst maintaining
	93	* gcc's format and side-effect checking.
	94	*/
b9075fa9	95	static inline __printf(1, 2)
5264f2f7 JP	96	int no_printk(const char *fmt, ...)
	97	{
	98	return 0;
	99	}
	100
d0380e6c	101	#ifdef CONFIG_EARLY_PRINTK
b9075fa9	102	extern asmlinkage __printf(1, 2)
5264f2f7	103	void early_printk(const char *fmt, ...);
d0380e6c TG	104	void early_vprintk(const char *fmt, va_list ap);
	105	#else
	106	static inline __printf(1, 2) __cold
	107	void early_printk(const char *s, ...) { }
	108	#endif
5264f2f7	109
968ab183	110	#ifdef CONFIG_PRINTK
7ff9554b KS	111	asmlinkage __printf(5, 0)
	112	int vprintk_emit(int facility, int level,
	113	const char *dict, size_t dictlen,
	114	const char *fmt, va_list args);
	115
b9075fa9	116	asmlinkage __printf(1, 0)
5264f2f7	117	int vprintk(const char *fmt, va_list args);
7ff9554b KS	118
	119	asmlinkage __printf(5, 6) __cold
	120	asmlinkage int printk_emit(int facility, int level,
	121	const char *dict, size_t dictlen,
	122	const char *fmt, ...);
	123
b9075fa9	124	asmlinkage __printf(1, 2) __cold
5264f2f7	125	int printk(const char *fmt, ...);
968ab183	126
3ccf3e83 PZ	127	/*
	128	* Special printk facility for scheduler use only, _DO_NOT_USE_ !
	129	*/
	130	__printf(1, 2) __cold int printk_sched(const char *fmt, ...);
	131
968ab183 LT	132	/*
	133	* Please don't use printk_ratelimit(), because it shares ratelimiting state
	134	* with all other unrelated printk_ratelimit() callsites. Instead use
	135	* printk_ratelimited() or plain old __ratelimit().
	136	*/
	137	extern int __printk_ratelimit(const char *func);
	138	#define printk_ratelimit() __printk_ratelimit(__func__)
	139	extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	140	unsigned int interval_msec);
	141
	142	extern int printk_delay_msec;
	143	extern int dmesg_restrict;
455cd5ab	144	extern int kptr_restrict;
968ab183	145
dc72c32e FW	146	extern void wake_up_klogd(void);
dc72c32e FW	147
968ab183	148	void log_buf_kexec_setup(void);
162a7e75	149	void __init setup_log_buf(int early);
98e5e1bf	150	void dump_stack_set_arch_desc(const char *fmt, ...);
196779b9	151	void dump_stack_print_info(const char *log_lvl);
a43cb95d	152	void show_regs_print_info(const char *log_lvl);
968ab183	153	#else
b9075fa9	154	static inline __printf(1, 0)
5264f2f7 JP	155	int vprintk(const char *s, va_list args)
	156	{
	157	return 0;
	158	}
b9075fa9	159	static inline __printf(1, 2) __cold
5264f2f7 JP	160	int printk(const char *s, ...)
	161	{
	162	return 0;
	163	}
3ccf3e83 PZ	164	static inline __printf(1, 2) __cold
	165	int printk_sched(const char *s, ...)
	166	{
	167	return 0;
	168	}
5264f2f7 JP	169	static inline int printk_ratelimit(void)
	170	{
	171	return 0;
	172	}
	173	static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	174	unsigned int interval_msec)
	175	{
	176	return false;
	177	}
968ab183	178
dc72c32e FW	179	static inline void wake_up_klogd(void)
	180	{
	181	}
	182
968ab183 LT	183	static inline void log_buf_kexec_setup(void)
	184	{
	185	}
162a7e75 MT	186
	187	static inline void setup_log_buf(int early)
	188	{
	189	}
196779b9	190
98e5e1bf TH	191	static inline void dump_stack_set_arch_desc(const char *fmt, ...)
	192	{
	193	}
	194
196779b9 TH	195	static inline void dump_stack_print_info(const char *log_lvl)
	196	{
	197	}
a43cb95d TH	198
	199	static inline void show_regs_print_info(const char *log_lvl)
	200	{
	201	}
968ab183 LT	202	#endif
968ab183 LT	203
b6c035d0	204	extern asmlinkage void dump_stack(void) __cold;
968ab183	205
968ab183 LT	206	#ifndef pr_fmt
	207	#define pr_fmt(fmt) fmt
	208	#endif
	209
	210	#define pr_emerg(fmt, ...) \
a3f938bf	211	printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
968ab183	212	#define pr_alert(fmt, ...) \
a3f938bf	213	printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
968ab183	214	#define pr_crit(fmt, ...) \
a3f938bf	215	printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
968ab183	216	#define pr_err(fmt, ...) \
a3f938bf	217	printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
968ab183	218	#define pr_warning(fmt, ...) \
a3f938bf	219	printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	220	#define pr_warn pr_warning
968ab183 LT	221	#define pr_notice(fmt, ...) \
a3f938bf	222	printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
968ab183	223	#define pr_info(fmt, ...) \
a3f938bf	224	printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	225	#define pr_cont(fmt, ...) \
	226	printk(KERN_CONT fmt, ##__VA_ARGS__)
	227
	228	/* pr_devel() should produce zero code unless DEBUG is defined */
	229	#ifdef DEBUG
	230	#define pr_devel(fmt, ...) \
	231	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	232	#else
	233	#define pr_devel(fmt, ...) \
5264f2f7	234	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	235	#endif
968ab183 LT	236
29fc2bc7 JP	237	#include <linux/dynamic_debug.h>
29fc2bc7 JP	238
968ab183	239	/* If you are writing a driver, please use dev_dbg instead */
b558c96f	240	#if defined(CONFIG_DYNAMIC_DEBUG)
968ab183 LT	241	/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
	242	#define pr_debug(fmt, ...) \
	243	dynamic_pr_debug(fmt, ##__VA_ARGS__)
b558c96f JC	244	#elif defined(DEBUG)
	245	#define pr_debug(fmt, ...) \
	246	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	247	#else
968ab183 LT	248	#define pr_debug(fmt, ...) \
5264f2f7	249	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	250	#endif
968ab183 LT	251
16cb839f JP	252	/*
	253	* Print a one-time message (analogous to WARN_ONCE() et al):
	254	*/
	255
	256	#ifdef CONFIG_PRINTK
c28aa1f0 JP	257	#define printk_once(fmt, ...) \
	258	({ \
	259	static bool __print_once __read_mostly; \
	260	\
	261	if (!__print_once) { \
	262	__print_once = true; \
	263	printk(fmt, ##__VA_ARGS__); \
	264	} \
16cb839f JP	265	})
16cb839f JP	266	#else
c28aa1f0	267	#define printk_once(fmt, ...) \
16cb839f JP	268	no_printk(fmt, ##__VA_ARGS__)
	269	#endif
	270
	271	#define pr_emerg_once(fmt, ...) \
	272	printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
	273	#define pr_alert_once(fmt, ...) \
	274	printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
	275	#define pr_crit_once(fmt, ...) \
	276	printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
	277	#define pr_err_once(fmt, ...) \
	278	printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	279	#define pr_warn_once(fmt, ...) \
	280	printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
	281	#define pr_notice_once(fmt, ...) \
	282	printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
	283	#define pr_info_once(fmt, ...) \
	284	printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	285	#define pr_cont_once(fmt, ...) \
	286	printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
36d308d8 MG	287
	288	#if defined(DEBUG)
	289	#define pr_devel_once(fmt, ...) \
	290	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	291	#else
	292	#define pr_devel_once(fmt, ...) \
	293	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	294	#endif
	295
16cb839f JP	296	/* If you are writing a driver, please use dev_dbg instead */
	297	#if defined(DEBUG)
	298	#define pr_debug_once(fmt, ...) \
	299	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	300	#else
	301	#define pr_debug_once(fmt, ...) \
	302	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	303	#endif
	304
968ab183 LT	305	/*
	306	* ratelimited messages with local ratelimit_state,
	307	* no local ratelimit_state used in the !PRINTK case
	308	*/
	309	#ifdef CONFIG_PRINTK
6ec42a56 JP	310	#define printk_ratelimited(fmt, ...) \
6ec42a56 JP	311	({ \
968ab183 LT	312	static DEFINE_RATELIMIT_STATE(_rs, \
	313	DEFAULT_RATELIMIT_INTERVAL, \
	314	DEFAULT_RATELIMIT_BURST); \
	315	\
	316	if (__ratelimit(&_rs)) \
	317	printk(fmt, ##__VA_ARGS__); \
	318	})
	319	#else
6ec42a56 JP	320	#define printk_ratelimited(fmt, ...) \
6ec42a56 JP	321	no_printk(fmt, ##__VA_ARGS__)
968ab183 LT	322	#endif
968ab183 LT	323
6ec42a56	324	#define pr_emerg_ratelimited(fmt, ...) \
968ab183	325	printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	326	#define pr_alert_ratelimited(fmt, ...) \
968ab183	327	printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	328	#define pr_crit_ratelimited(fmt, ...) \
968ab183	329	printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	330	#define pr_err_ratelimited(fmt, ...) \
968ab183	331	printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	332	#define pr_warn_ratelimited(fmt, ...) \
968ab183	333	printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	334	#define pr_notice_ratelimited(fmt, ...) \
968ab183	335	printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	336	#define pr_info_ratelimited(fmt, ...) \
968ab183 LT	337	printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	338	/* no pr_cont_ratelimited, don't do that... */
36d308d8 MG	339
	340	#if defined(DEBUG)
	341	#define pr_devel_ratelimited(fmt, ...) \
	342	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	343	#else
	344	#define pr_devel_ratelimited(fmt, ...) \
	345	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	346	#endif
	347
968ab183	348	/* If you are writing a driver, please use dev_dbg instead */
29fc2bc7 JP	349	#if defined(CONFIG_DYNAMIC_DEBUG)
	350	/* descriptor check is first to prevent flooding with "callbacks suppressed" */
	351	#define pr_debug_ratelimited(fmt, ...) \
	352	do { \
	353	static DEFINE_RATELIMIT_STATE(_rs, \
	354	DEFAULT_RATELIMIT_INTERVAL, \
	355	DEFAULT_RATELIMIT_BURST); \
	356	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
	357	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \
	358	__ratelimit(&_rs)) \
	359	__dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__); \
	360	} while (0)
	361	#elif defined(DEBUG)
6ec42a56	362	#define pr_debug_ratelimited(fmt, ...) \
968ab183 LT	363	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	364	#else
	365	#define pr_debug_ratelimited(fmt, ...) \
5264f2f7	366	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	367	#endif
968ab183 LT	368
e11fea92 KS	369	extern const struct file_operations kmsg_fops;
e11fea92 KS	370
ac83ed68 JP	371	enum {
	372	DUMP_PREFIX_NONE,
	373	DUMP_PREFIX_ADDRESS,
	374	DUMP_PREFIX_OFFSET
	375	};
	376	extern void hex_dump_to_buffer(const void *buf, size_t len,
	377	int rowsize, int groupsize,
	378	char *linebuf, size_t linebuflen, bool ascii);
	379	#ifdef CONFIG_PRINTK
	380	extern void print_hex_dump(const char level, const char prefix_str,
	381	int prefix_type, int rowsize, int groupsize,
	382	const void *buf, size_t len, bool ascii);
7a555613 VK	383	#if defined(CONFIG_DYNAMIC_DEBUG)
	384	#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
	385	dynamic_hex_dump(prefix_str, prefix_type, 16, 1, buf, len, true)
	386	#else
ac83ed68 JP	387	extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
ac83ed68 JP	388	const void *buf, size_t len);
7a555613	389	#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
ac83ed68 JP	390	#else
	391	static inline void print_hex_dump(const char level, const char prefix_str,
	392	int prefix_type, int rowsize, int groupsize,
	393	const void *buf, size_t len, bool ascii)
	394	{
	395	}
	396	static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
	397	const void *buf, size_t len)
	398	{
	399	}
	400
	401	#endif
	402
7a555613 VK	403	#if defined(CONFIG_DYNAMIC_DEBUG)
	404	#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
	405	groupsize, buf, len, ascii) \
	406	dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
	407	groupsize, buf, len, ascii)
	408	#else
	409	#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
	410	groupsize, buf, len, ascii) \
	411	print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \
	412	groupsize, buf, len, ascii)
	413	#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
	414
968ab183	415	#endif