[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))
		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]: "

/*
 * DEPRECATED
 * Add this to a message whenever you want to warn user space about the use
 * of a deprecated aspect of an API so they can stop using it
 */
#define DEPRECATED	"[Deprecated]: "

/*
 * 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
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/timekeeping use only, _DO_NOT_USE_ !
 */
__printf(1, 2) __cold int printk_deferred(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_deferred(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

/*
 * These can be used to print at the various log levels.
 * All of these will print unconditionally, although note that pr_debug()
 * and other debug macros are compiled out unless either DEBUG is defined
 * or CONFIG_DYNAMIC_DEBUG is set.
 */
#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__);			\
	}							\
})
#define printk_deferred_once(fmt, ...)				\
({								\
	static bool __print_once __read_mostly;			\
								\
	if (!__print_once) {					\
		__print_once = true;				\
		printk_deferred(fmt, ##__VA_ARGS__);		\
	}							\
})
#else
#define printk_once(fmt, ...)					\
	no_printk(fmt, ##__VA_ARGS__)
#define printk_deferred_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	{
0185698c PM	27	if (printk_get_level(buffer))
	28	return buffer + 2;
	29
acc8fa41 JP	30	return buffer;
	31	}
	32
968ab183 LT	33	extern int console_printk[];
	34
	35	#define console_loglevel (console_printk[0])
	36	#define default_message_loglevel (console_printk[1])
	37	#define minimum_console_loglevel (console_printk[2])
	38	#define default_console_loglevel (console_printk[3])
	39
a9747cc3 JP	40	static inline void console_silent(void)
	41	{
	42	console_loglevel = 0;
	43	}
	44
	45	static inline void console_verbose(void)
	46	{
	47	if (console_loglevel)
	48	console_loglevel = 15;
	49	}
	50
968ab183 LT	51	struct va_format {
	52	const char *fmt;
	53	va_list *va;
	54	};
	55
	56	/*
	57	* FW_BUG
	58	* Add this to a message where you are sure the firmware is buggy or behaves
	59	* really stupid or out of spec. Be aware that the responsible BIOS developer
	60	* should be able to fix this issue or at least get a concrete idea of the
	61	* problem by reading your message without the need of looking at the kernel
	62	* code.
	63	*
	64	* Use it for definite and high priority BIOS bugs.
	65	*
	66	* FW_WARN
	67	* Use it for not that clear (e.g. could the kernel messed up things already?)
	68	* and medium priority BIOS bugs.
	69	*
	70	* FW_INFO
	71	* Use this one if you want to tell the user or vendor about something
	72	* suspicious, but generally harmless related to the firmware.
	73	*
	74	* Use it for information or very low priority BIOS bugs.
	75	*/
	76	#define FW_BUG "[Firmware Bug]: "
	77	#define FW_WARN "[Firmware Warn]: "
	78	#define FW_INFO "[Firmware Info]: "
	79
	80	/*
	81	* HW_ERR
	82	* Add this to a message for hardware errors, so that user can report
	83	* it to hardware vendor instead of LKML or software vendor.
	84	*/
	85	#define HW_ERR "[Hardware Error]: "
	86
0a9a8bfd NH	87	/*
	88	* DEPRECATED
	89	* Add this to a message whenever you want to warn user space about the use
	90	* of a deprecated aspect of an API so they can stop using it
	91	*/
	92	#define DEPRECATED "[Deprecated]: "
	93
5264f2f7 JP	94	/*
	95	* Dummy printk for disabled debugging statements to use whilst maintaining
	96	* gcc's format and side-effect checking.
	97	*/
b9075fa9	98	static inline __printf(1, 2)
5264f2f7 JP	99	int no_printk(const char *fmt, ...)
	100	{
	101	return 0;
	102	}
	103
d0380e6c	104	#ifdef CONFIG_EARLY_PRINTK
b9075fa9	105	extern asmlinkage __printf(1, 2)
5264f2f7	106	void early_printk(const char *fmt, ...);
d0380e6c TG	107	void early_vprintk(const char *fmt, va_list ap);
	108	#else
	109	static inline __printf(1, 2) __cold
	110	void early_printk(const char *s, ...) { }
	111	#endif
5264f2f7	112
968ab183	113	#ifdef CONFIG_PRINTK
7ff9554b KS	114	asmlinkage __printf(5, 0)
	115	int vprintk_emit(int facility, int level,
	116	const char *dict, size_t dictlen,
	117	const char *fmt, va_list args);
	118
b9075fa9	119	asmlinkage __printf(1, 0)
5264f2f7	120	int vprintk(const char *fmt, va_list args);
7ff9554b KS	121
7ff9554b KS	122	asmlinkage __printf(5, 6) __cold
d487d575 SK	123	int printk_emit(int facility, int level,
	124	const char *dict, size_t dictlen,
	125	const char *fmt, ...);
7ff9554b	126
b9075fa9	127	asmlinkage __printf(1, 2) __cold
5264f2f7	128	int printk(const char *fmt, ...);
968ab183	129
3ccf3e83	130	/*
aac74dc4	131	* Special printk facility for scheduler/timekeeping use only, _DO_NOT_USE_ !
3ccf3e83	132	*/
aac74dc4	133	__printf(1, 2) __cold int printk_deferred(const char *fmt, ...);
3ccf3e83	134
968ab183 LT	135	/*
	136	* Please don't use printk_ratelimit(), because it shares ratelimiting state
	137	* with all other unrelated printk_ratelimit() callsites. Instead use
	138	* printk_ratelimited() or plain old __ratelimit().
	139	*/
	140	extern int __printk_ratelimit(const char *func);
	141	#define printk_ratelimit() __printk_ratelimit(__func__)
	142	extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	143	unsigned int interval_msec);
	144
	145	extern int printk_delay_msec;
	146	extern int dmesg_restrict;
455cd5ab	147	extern int kptr_restrict;
968ab183	148
dc72c32e FW	149	extern void wake_up_klogd(void);
dc72c32e FW	150
968ab183	151	void log_buf_kexec_setup(void);
162a7e75	152	void __init setup_log_buf(int early);
98e5e1bf	153	void dump_stack_set_arch_desc(const char *fmt, ...);
196779b9	154	void dump_stack_print_info(const char *log_lvl);
a43cb95d	155	void show_regs_print_info(const char *log_lvl);
968ab183	156	#else
b9075fa9	157	static inline __printf(1, 0)
5264f2f7 JP	158	int vprintk(const char *s, va_list args)
	159	{
	160	return 0;
	161	}
b9075fa9	162	static inline __printf(1, 2) __cold
5264f2f7 JP	163	int printk(const char *s, ...)
	164	{
	165	return 0;
	166	}
3ccf3e83	167	static inline __printf(1, 2) __cold
aac74dc4	168	int printk_deferred(const char *s, ...)
3ccf3e83 PZ	169	{
	170	return 0;
	171	}
5264f2f7 JP	172	static inline int printk_ratelimit(void)
	173	{
	174	return 0;
	175	}
	176	static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
	177	unsigned int interval_msec)
	178	{
	179	return false;
	180	}
968ab183	181
dc72c32e FW	182	static inline void wake_up_klogd(void)
	183	{
	184	}
	185
968ab183 LT	186	static inline void log_buf_kexec_setup(void)
	187	{
	188	}
162a7e75 MT	189
	190	static inline void setup_log_buf(int early)
	191	{
	192	}
196779b9	193
98e5e1bf TH	194	static inline void dump_stack_set_arch_desc(const char *fmt, ...)
	195	{
	196	}
	197
196779b9 TH	198	static inline void dump_stack_print_info(const char *log_lvl)
	199	{
	200	}
a43cb95d TH	201
	202	static inline void show_regs_print_info(const char *log_lvl)
	203	{
	204	}
968ab183 LT	205	#endif
968ab183 LT	206
b6c035d0	207	extern asmlinkage void dump_stack(void) __cold;
968ab183	208
968ab183 LT	209	#ifndef pr_fmt
	210	#define pr_fmt(fmt) fmt
	211	#endif
	212
6e099f55 DS	213	/*
	214	* These can be used to print at the various log levels.
	215	* All of these will print unconditionally, although note that pr_debug()
	216	* and other debug macros are compiled out unless either DEBUG is defined
	217	* or CONFIG_DYNAMIC_DEBUG is set.
	218	*/
968ab183	219	#define pr_emerg(fmt, ...) \
a3f938bf	220	printk(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
968ab183	221	#define pr_alert(fmt, ...) \
a3f938bf	222	printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
968ab183	223	#define pr_crit(fmt, ...) \
a3f938bf	224	printk(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
968ab183	225	#define pr_err(fmt, ...) \
a3f938bf	226	printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
968ab183	227	#define pr_warning(fmt, ...) \
a3f938bf	228	printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	229	#define pr_warn pr_warning
968ab183 LT	230	#define pr_notice(fmt, ...) \
a3f938bf	231	printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
968ab183	232	#define pr_info(fmt, ...) \
a3f938bf	233	printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	234	#define pr_cont(fmt, ...) \
	235	printk(KERN_CONT fmt, ##__VA_ARGS__)
	236
	237	/* pr_devel() should produce zero code unless DEBUG is defined */
	238	#ifdef DEBUG
	239	#define pr_devel(fmt, ...) \
	240	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	241	#else
	242	#define pr_devel(fmt, ...) \
5264f2f7	243	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	244	#endif
968ab183 LT	245
29fc2bc7 JP	246	#include <linux/dynamic_debug.h>
29fc2bc7 JP	247
968ab183	248	/* If you are writing a driver, please use dev_dbg instead */
b558c96f	249	#if defined(CONFIG_DYNAMIC_DEBUG)
968ab183 LT	250	/* dynamic_pr_debug() uses pr_fmt() internally so we don't need it here */
	251	#define pr_debug(fmt, ...) \
	252	dynamic_pr_debug(fmt, ##__VA_ARGS__)
b558c96f JC	253	#elif defined(DEBUG)
	254	#define pr_debug(fmt, ...) \
	255	printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	256	#else
968ab183 LT	257	#define pr_debug(fmt, ...) \
5264f2f7	258	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	259	#endif
968ab183 LT	260
16cb839f JP	261	/*
	262	* Print a one-time message (analogous to WARN_ONCE() et al):
	263	*/
	264
	265	#ifdef CONFIG_PRINTK
c28aa1f0 JP	266	#define printk_once(fmt, ...) \
	267	({ \
	268	static bool __print_once __read_mostly; \
	269	\
	270	if (!__print_once) { \
	271	__print_once = true; \
	272	printk(fmt, ##__VA_ARGS__); \
	273	} \
16cb839f	274	})
c224815d JS	275	#define printk_deferred_once(fmt, ...) \
	276	({ \
	277	static bool __print_once __read_mostly; \
	278	\
	279	if (!__print_once) { \
	280	__print_once = true; \
	281	printk_deferred(fmt, ##__VA_ARGS__); \
	282	} \
	283	})
16cb839f	284	#else
c28aa1f0	285	#define printk_once(fmt, ...) \
16cb839f	286	no_printk(fmt, ##__VA_ARGS__)
c224815d JS	287	#define printk_deferred_once(fmt, ...) \
c224815d JS	288	no_printk(fmt, ##__VA_ARGS__)
16cb839f JP	289	#endif
	290
	291	#define pr_emerg_once(fmt, ...) \
	292	printk_once(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
	293	#define pr_alert_once(fmt, ...) \
	294	printk_once(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
	295	#define pr_crit_once(fmt, ...) \
	296	printk_once(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
	297	#define pr_err_once(fmt, ...) \
	298	printk_once(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	299	#define pr_warn_once(fmt, ...) \
	300	printk_once(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
	301	#define pr_notice_once(fmt, ...) \
	302	printk_once(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
	303	#define pr_info_once(fmt, ...) \
	304	printk_once(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
	305	#define pr_cont_once(fmt, ...) \
	306	printk_once(KERN_CONT pr_fmt(fmt), ##__VA_ARGS__)
36d308d8 MG	307
	308	#if defined(DEBUG)
	309	#define pr_devel_once(fmt, ...) \
	310	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	311	#else
	312	#define pr_devel_once(fmt, ...) \
	313	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	314	#endif
	315
16cb839f JP	316	/* If you are writing a driver, please use dev_dbg instead */
	317	#if defined(DEBUG)
	318	#define pr_debug_once(fmt, ...) \
	319	printk_once(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	320	#else
	321	#define pr_debug_once(fmt, ...) \
	322	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	323	#endif
	324
968ab183 LT	325	/*
	326	* ratelimited messages with local ratelimit_state,
	327	* no local ratelimit_state used in the !PRINTK case
	328	*/
	329	#ifdef CONFIG_PRINTK
6ec42a56 JP	330	#define printk_ratelimited(fmt, ...) \
6ec42a56 JP	331	({ \
968ab183 LT	332	static DEFINE_RATELIMIT_STATE(_rs, \
	333	DEFAULT_RATELIMIT_INTERVAL, \
	334	DEFAULT_RATELIMIT_BURST); \
	335	\
	336	if (__ratelimit(&_rs)) \
	337	printk(fmt, ##__VA_ARGS__); \
	338	})
	339	#else
6ec42a56 JP	340	#define printk_ratelimited(fmt, ...) \
6ec42a56 JP	341	no_printk(fmt, ##__VA_ARGS__)
968ab183 LT	342	#endif
968ab183 LT	343
6ec42a56	344	#define pr_emerg_ratelimited(fmt, ...) \
968ab183	345	printk_ratelimited(KERN_EMERG pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	346	#define pr_alert_ratelimited(fmt, ...) \
968ab183	347	printk_ratelimited(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	348	#define pr_crit_ratelimited(fmt, ...) \
968ab183	349	printk_ratelimited(KERN_CRIT pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	350	#define pr_err_ratelimited(fmt, ...) \
968ab183	351	printk_ratelimited(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	352	#define pr_warn_ratelimited(fmt, ...) \
968ab183	353	printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	354	#define pr_notice_ratelimited(fmt, ...) \
968ab183	355	printk_ratelimited(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
6ec42a56	356	#define pr_info_ratelimited(fmt, ...) \
968ab183 LT	357	printk_ratelimited(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	358	/* no pr_cont_ratelimited, don't do that... */
36d308d8 MG	359
	360	#if defined(DEBUG)
	361	#define pr_devel_ratelimited(fmt, ...) \
	362	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	363	#else
	364	#define pr_devel_ratelimited(fmt, ...) \
	365	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	366	#endif
	367
968ab183	368	/* If you are writing a driver, please use dev_dbg instead */
29fc2bc7 JP	369	#if defined(CONFIG_DYNAMIC_DEBUG)
	370	/* descriptor check is first to prevent flooding with "callbacks suppressed" */
	371	#define pr_debug_ratelimited(fmt, ...) \
	372	do { \
	373	static DEFINE_RATELIMIT_STATE(_rs, \
	374	DEFAULT_RATELIMIT_INTERVAL, \
	375	DEFAULT_RATELIMIT_BURST); \
	376	DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
	377	if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \
	378	__ratelimit(&_rs)) \
	379	__dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__); \
	380	} while (0)
	381	#elif defined(DEBUG)
6ec42a56	382	#define pr_debug_ratelimited(fmt, ...) \
968ab183 LT	383	printk_ratelimited(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
	384	#else
	385	#define pr_debug_ratelimited(fmt, ...) \
5264f2f7	386	no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
968ab183 LT	387	#endif
968ab183 LT	388
e11fea92 KS	389	extern const struct file_operations kmsg_fops;
e11fea92 KS	390
ac83ed68 JP	391	enum {
	392	DUMP_PREFIX_NONE,
	393	DUMP_PREFIX_ADDRESS,
	394	DUMP_PREFIX_OFFSET
	395	};
	396	extern void hex_dump_to_buffer(const void *buf, size_t len,
	397	int rowsize, int groupsize,
	398	char *linebuf, size_t linebuflen, bool ascii);
	399	#ifdef CONFIG_PRINTK
	400	extern void print_hex_dump(const char level, const char prefix_str,
	401	int prefix_type, int rowsize, int groupsize,
	402	const void *buf, size_t len, bool ascii);
7a555613 VK	403	#if defined(CONFIG_DYNAMIC_DEBUG)
	404	#define print_hex_dump_bytes(prefix_str, prefix_type, buf, len) \
	405	dynamic_hex_dump(prefix_str, prefix_type, 16, 1, buf, len, true)
	406	#else
ac83ed68 JP	407	extern void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
ac83ed68 JP	408	const void *buf, size_t len);
7a555613	409	#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
ac83ed68 JP	410	#else
	411	static inline void print_hex_dump(const char level, const char prefix_str,
	412	int prefix_type, int rowsize, int groupsize,
	413	const void *buf, size_t len, bool ascii)
	414	{
	415	}
	416	static inline void print_hex_dump_bytes(const char *prefix_str, int prefix_type,
	417	const void *buf, size_t len)
	418	{
	419	}
	420
	421	#endif
	422
7a555613 VK	423	#if defined(CONFIG_DYNAMIC_DEBUG)
	424	#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
	425	groupsize, buf, len, ascii) \
	426	dynamic_hex_dump(prefix_str, prefix_type, rowsize, \
	427	groupsize, buf, len, ascii)
	428	#else
	429	#define print_hex_dump_debug(prefix_str, prefix_type, rowsize, \
	430	groupsize, buf, len, ascii) \
	431	print_hex_dump(KERN_DEBUG, prefix_str, prefix_type, rowsize, \
	432	groupsize, buf, len, ascii)
	433	#endif /* defined(CONFIG_DYNAMIC_DEBUG) */
	434
968ab183	435	#endif