278 lines
9.1 KiB
C
278 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* dev_printk.h - printk messages helpers for devices
|
|
*
|
|
* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
|
|
* Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
|
|
* Copyright (c) 2008-2009 Novell Inc.
|
|
*
|
|
*/
|
|
|
|
#ifndef _DEVICE_PRINTK_H_
|
|
#define _DEVICE_PRINTK_H_
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/types.h>
|
|
#include <linux/ratelimit.h>
|
|
|
|
#ifndef dev_fmt
|
|
#define dev_fmt(fmt) fmt
|
|
#endif
|
|
|
|
struct device;
|
|
|
|
#define PRINTK_INFO_SUBSYSTEM_LEN 16
|
|
#define PRINTK_INFO_DEVICE_LEN 48
|
|
|
|
struct dev_printk_info {
|
|
char subsystem[PRINTK_INFO_SUBSYSTEM_LEN];
|
|
char device[PRINTK_INFO_DEVICE_LEN];
|
|
};
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
|
|
__printf(3, 0) __cold
|
|
int dev_vprintk_emit(int level, const struct device *dev,
|
|
const char *fmt, va_list args);
|
|
__printf(3, 4) __cold
|
|
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
|
|
|
|
__printf(3, 4) __cold
|
|
void _dev_printk(const char *level, const struct device *dev,
|
|
const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_emerg(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_alert(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_crit(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_err(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_warn(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_notice(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_info(const struct device *dev, const char *fmt, ...);
|
|
|
|
#else
|
|
|
|
static inline __printf(3, 0)
|
|
int dev_vprintk_emit(int level, const struct device *dev,
|
|
const char *fmt, va_list args)
|
|
{ return 0; }
|
|
static inline __printf(3, 4)
|
|
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...)
|
|
{ return 0; }
|
|
|
|
static inline void __dev_printk(const char *level, const struct device *dev,
|
|
struct va_format *vaf)
|
|
{}
|
|
static inline __printf(3, 4)
|
|
void _dev_printk(const char *level, const struct device *dev,
|
|
const char *fmt, ...)
|
|
{}
|
|
|
|
static inline __printf(2, 3)
|
|
void _dev_emerg(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_crit(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_alert(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_err(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_warn(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_notice(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_info(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Need to take variadic arguments even though we don't use them, as dev_fmt()
|
|
* may only just have been expanded and may result in multiple arguments.
|
|
*/
|
|
#define dev_printk_index_emit(level, fmt, ...) \
|
|
printk_index_subsys_emit("%s %s: ", level, fmt)
|
|
|
|
#define dev_printk_index_wrap(_p_func, level, dev, fmt, ...) \
|
|
({ \
|
|
dev_printk_index_emit(level, fmt); \
|
|
_p_func(dev, fmt, ##__VA_ARGS__); \
|
|
})
|
|
|
|
/*
|
|
* Some callsites directly call dev_printk rather than going through the
|
|
* dev_<level> infrastructure, so we need to emit here as well as inside those
|
|
* level-specific macros. Only one index entry will be produced, either way,
|
|
* since dev_printk's `fmt` isn't known at compile time if going through the
|
|
* dev_<level> macros.
|
|
*
|
|
* dev_fmt() isn't called for dev_printk when used directly, as it's used by
|
|
* the dev_<level> macros internally which already have dev_fmt() processed.
|
|
*
|
|
* We also can't use dev_printk_index_wrap directly, because we have a separate
|
|
* level to process.
|
|
*/
|
|
#define dev_printk(level, dev, fmt, ...) \
|
|
({ \
|
|
dev_printk_index_emit(level, fmt); \
|
|
_dev_printk(level, dev, fmt, ##__VA_ARGS__); \
|
|
})
|
|
|
|
/*
|
|
* #defines for all the dev_<level> macros to prefix with whatever
|
|
* possible use of #define dev_fmt(fmt) ...
|
|
*/
|
|
|
|
#define dev_emerg(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_emerg, KERN_EMERG, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_crit(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_crit, KERN_CRIT, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_alert(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_alert, KERN_ALERT, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_err(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_warn(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_warn, KERN_WARNING, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_notice(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_notice, KERN_NOTICE, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_info(dev, fmt, ...) \
|
|
dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
|
|
#if defined(CONFIG_DYNAMIC_DEBUG) || \
|
|
(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
|
|
#define dev_dbg(dev, fmt, ...) \
|
|
dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#elif defined(DEBUG)
|
|
#define dev_dbg(dev, fmt, ...) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#else
|
|
#define dev_dbg(dev, fmt, ...) \
|
|
({ \
|
|
if (0) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
})
|
|
#endif
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
#define dev_level_once(dev_level, dev, fmt, ...) \
|
|
do { \
|
|
static bool __print_once __read_mostly; \
|
|
\
|
|
if (!__print_once) { \
|
|
__print_once = true; \
|
|
dev_level(dev, fmt, ##__VA_ARGS__); \
|
|
} \
|
|
} while (0)
|
|
#else
|
|
#define dev_level_once(dev_level, dev, fmt, ...) \
|
|
do { \
|
|
if (0) \
|
|
dev_level(dev, fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#define dev_emerg_once(dev, fmt, ...) \
|
|
dev_level_once(dev_emerg, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_alert_once(dev, fmt, ...) \
|
|
dev_level_once(dev_alert, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_crit_once(dev, fmt, ...) \
|
|
dev_level_once(dev_crit, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_err_once(dev, fmt, ...) \
|
|
dev_level_once(dev_err, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_warn_once(dev, fmt, ...) \
|
|
dev_level_once(dev_warn, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_notice_once(dev, fmt, ...) \
|
|
dev_level_once(dev_notice, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_info_once(dev, fmt, ...) \
|
|
dev_level_once(dev_info, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_dbg_once(dev, fmt, ...) \
|
|
dev_level_once(dev_dbg, dev, fmt, ##__VA_ARGS__)
|
|
|
|
#define dev_level_ratelimited(dev_level, dev, fmt, ...) \
|
|
do { \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
if (__ratelimit(&_rs)) \
|
|
dev_level(dev, fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define dev_emerg_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_emerg, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_alert_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_alert, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_crit_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_crit, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_err_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_err, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_warn_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_warn, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_notice_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_notice, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_info_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_info, dev, fmt, ##__VA_ARGS__)
|
|
#if defined(CONFIG_DYNAMIC_DEBUG) || \
|
|
(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
|
|
/* descriptor check is first to prevent flooding with "callbacks suppressed" */
|
|
#define dev_dbg_ratelimited(dev, fmt, ...) \
|
|
do { \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
|
|
if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
|
|
__ratelimit(&_rs)) \
|
|
__dynamic_dev_dbg(&descriptor, dev, dev_fmt(fmt), \
|
|
##__VA_ARGS__); \
|
|
} while (0)
|
|
#elif defined(DEBUG)
|
|
#define dev_dbg_ratelimited(dev, fmt, ...) \
|
|
do { \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
if (__ratelimit(&_rs)) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
} while (0)
|
|
#else
|
|
#define dev_dbg_ratelimited(dev, fmt, ...) \
|
|
do { \
|
|
if (0) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
#define dev_vdbg dev_dbg
|
|
#else
|
|
#define dev_vdbg(dev, fmt, ...) \
|
|
({ \
|
|
if (0) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
})
|
|
#endif
|
|
|
|
/*
|
|
* dev_WARN*() acts like dev_printk(), but with the key difference of
|
|
* using WARN/WARN_ONCE to include file/line information and a backtrace.
|
|
*/
|
|
#define dev_WARN(dev, format, arg...) \
|
|
WARN(1, "%s %s: " format, dev_driver_string(dev), dev_name(dev), ## arg)
|
|
|
|
#define dev_WARN_ONCE(dev, condition, format, arg...) \
|
|
WARN_ONCE(condition, "%s %s: " format, \
|
|
dev_driver_string(dev), dev_name(dev), ## arg)
|
|
|
|
#endif /* _DEVICE_PRINTK_H_ */
|