[linux-2.6-block.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>

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