238 lines
7.5 KiB
C
238 lines
7.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* dev_printk.h - printk messages helpers for devices
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*
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* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
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* Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
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* Copyright (c) 2008-2009 Novell Inc.
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*
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*/
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#ifndef _DEVICE_PRINTK_H_
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#define _DEVICE_PRINTK_H_
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/ratelimit.h>
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#ifndef dev_fmt
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#define dev_fmt(fmt) fmt
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#endif
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struct device;
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#ifdef CONFIG_PRINTK
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__printf(3, 0) __cold
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int dev_vprintk_emit(int level, const struct device *dev,
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const char *fmt, va_list args);
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__printf(3, 4) __cold
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int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
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__printf(3, 4) __cold
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void dev_printk(const char *level, const struct device *dev,
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const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_emerg(const struct device *dev, const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_alert(const struct device *dev, const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_crit(const struct device *dev, const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_err(const struct device *dev, const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_warn(const struct device *dev, const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_notice(const struct device *dev, const char *fmt, ...);
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__printf(2, 3) __cold
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void _dev_info(const struct device *dev, const char *fmt, ...);
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#else
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static inline __printf(3, 0)
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int dev_vprintk_emit(int level, const struct device *dev,
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const char *fmt, va_list args)
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{ return 0; }
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static inline __printf(3, 4)
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int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...)
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{ return 0; }
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static inline void __dev_printk(const char *level, const struct device *dev,
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struct va_format *vaf)
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{}
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static inline __printf(3, 4)
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void dev_printk(const char *level, const struct device *dev,
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const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_emerg(const struct device *dev, const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_crit(const struct device *dev, const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_alert(const struct device *dev, const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_err(const struct device *dev, const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_warn(const struct device *dev, const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_notice(const struct device *dev, const char *fmt, ...)
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{}
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static inline __printf(2, 3)
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void _dev_info(const struct device *dev, const char *fmt, ...)
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{}
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#endif
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/*
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* #defines for all the dev_<level> macros to prefix with whatever
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* possible use of #define dev_fmt(fmt) ...
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*/
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#define dev_emerg(dev, fmt, ...) \
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_dev_emerg(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#define dev_crit(dev, fmt, ...) \
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_dev_crit(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#define dev_alert(dev, fmt, ...) \
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_dev_alert(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#define dev_err(dev, fmt, ...) \
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_dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#define dev_warn(dev, fmt, ...) \
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_dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#define dev_notice(dev, fmt, ...) \
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_dev_notice(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#define dev_info(dev, fmt, ...) \
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_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#if defined(CONFIG_DYNAMIC_DEBUG) || \
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(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
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#define dev_dbg(dev, fmt, ...) \
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dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
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#elif defined(DEBUG)
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#define dev_dbg(dev, fmt, ...) \
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dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
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#else
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#define dev_dbg(dev, fmt, ...) \
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({ \
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if (0) \
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dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
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})
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#endif
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#ifdef CONFIG_PRINTK
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#define dev_level_once(dev_level, dev, fmt, ...) \
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do { \
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static bool __print_once __read_mostly; \
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\
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if (!__print_once) { \
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__print_once = true; \
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dev_level(dev, fmt, ##__VA_ARGS__); \
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} \
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} while (0)
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#else
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#define dev_level_once(dev_level, dev, fmt, ...) \
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do { \
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if (0) \
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dev_level(dev, fmt, ##__VA_ARGS__); \
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} while (0)
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#endif
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#define dev_emerg_once(dev, fmt, ...) \
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dev_level_once(dev_emerg, dev, fmt, ##__VA_ARGS__)
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#define dev_alert_once(dev, fmt, ...) \
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dev_level_once(dev_alert, dev, fmt, ##__VA_ARGS__)
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#define dev_crit_once(dev, fmt, ...) \
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dev_level_once(dev_crit, dev, fmt, ##__VA_ARGS__)
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#define dev_err_once(dev, fmt, ...) \
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dev_level_once(dev_err, dev, fmt, ##__VA_ARGS__)
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#define dev_warn_once(dev, fmt, ...) \
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dev_level_once(dev_warn, dev, fmt, ##__VA_ARGS__)
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#define dev_notice_once(dev, fmt, ...) \
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dev_level_once(dev_notice, dev, fmt, ##__VA_ARGS__)
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#define dev_info_once(dev, fmt, ...) \
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dev_level_once(dev_info, dev, fmt, ##__VA_ARGS__)
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#define dev_dbg_once(dev, fmt, ...) \
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dev_level_once(dev_dbg, dev, fmt, ##__VA_ARGS__)
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#define dev_level_ratelimited(dev_level, dev, fmt, ...) \
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do { \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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if (__ratelimit(&_rs)) \
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dev_level(dev, fmt, ##__VA_ARGS__); \
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} while (0)
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#define dev_emerg_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_emerg, dev, fmt, ##__VA_ARGS__)
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#define dev_alert_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_alert, dev, fmt, ##__VA_ARGS__)
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#define dev_crit_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_crit, dev, fmt, ##__VA_ARGS__)
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#define dev_err_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_err, dev, fmt, ##__VA_ARGS__)
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#define dev_warn_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_warn, dev, fmt, ##__VA_ARGS__)
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#define dev_notice_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_notice, dev, fmt, ##__VA_ARGS__)
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#define dev_info_ratelimited(dev, fmt, ...) \
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dev_level_ratelimited(dev_info, dev, fmt, ##__VA_ARGS__)
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#if defined(CONFIG_DYNAMIC_DEBUG) || \
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(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
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/* descriptor check is first to prevent flooding with "callbacks suppressed" */
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#define dev_dbg_ratelimited(dev, fmt, ...) \
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do { \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
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if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
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__ratelimit(&_rs)) \
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__dynamic_dev_dbg(&descriptor, dev, dev_fmt(fmt), \
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##__VA_ARGS__); \
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} while (0)
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#elif defined(DEBUG)
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#define dev_dbg_ratelimited(dev, fmt, ...) \
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do { \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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if (__ratelimit(&_rs)) \
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dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
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} while (0)
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#else
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#define dev_dbg_ratelimited(dev, fmt, ...) \
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do { \
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if (0) \
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dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
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} while (0)
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#endif
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#ifdef VERBOSE_DEBUG
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#define dev_vdbg dev_dbg
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#else
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#define dev_vdbg(dev, fmt, ...) \
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({ \
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if (0) \
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dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
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})
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#endif
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/*
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* dev_WARN*() acts like dev_printk(), but with the key difference of
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* using WARN/WARN_ONCE to include file/line information and a backtrace.
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*/
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#define dev_WARN(dev, format, arg...) \
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WARN(1, "%s %s: " format, dev_driver_string(dev), dev_name(dev), ## arg);
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#define dev_WARN_ONCE(dev, condition, format, arg...) \
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WARN_ONCE(condition, "%s %s: " format, \
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dev_driver_string(dev), dev_name(dev), ## arg)
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#endif /* _DEVICE_PRINTK_H_ */
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