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Date: Tue, 19 Jun 2018 06:31:28 -0700
From: Joe Perches <joe@...ches.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] device: Add #define dev_fmt similar to #define
pr_fmt
Greg? Ping?
The patches to impi have hit -next and the impi code
works differently without this patch.
On Wed, 2018-05-09 at 08:15 -0700, Joe Perches wrote:
> Add a prefixing macro to dev_<level> uses similar to the pr_fmt
> prefixing macro used in pr_<level> calls.
>
> This can help avoid some string duplication in dev_<level> uses.
>
> The default, like pr_fmt, is an empty #define dev_fmt(fmt) fmt
>
> Rename the existing dev_<level> functions to _dev_<level> and
> introduce #define dev_<level> _dev_<level> macros that use the
> new #define dev_fmt
>
> Miscellanea:
>
> o Consistently use #defines with fmt, ... and ##__VA_ARGS__
> o Remove unnecessary externs
>
> Signed-off-by: Joe Perches <joe@...ches.com>
> ---
> drivers/base/core.c | 12 +++---
> include/linux/device.h | 103 ++++++++++++++++++++++++++++---------------------
> 2 files changed, 64 insertions(+), 51 deletions(-)
>
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index ad7b50897bcc..9c87a41cef82 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -2985,12 +2985,12 @@ void func(const struct device *dev, const char *fmt, ...) \
> } \
> EXPORT_SYMBOL(func);
>
> -define_dev_printk_level(dev_emerg, KERN_EMERG);
> -define_dev_printk_level(dev_alert, KERN_ALERT);
> -define_dev_printk_level(dev_crit, KERN_CRIT);
> -define_dev_printk_level(dev_err, KERN_ERR);
> -define_dev_printk_level(dev_warn, KERN_WARNING);
> -define_dev_printk_level(dev_notice, KERN_NOTICE);
> +define_dev_printk_level(_dev_emerg, KERN_EMERG);
> +define_dev_printk_level(_dev_alert, KERN_ALERT);
> +define_dev_printk_level(_dev_crit, KERN_CRIT);
> +define_dev_printk_level(_dev_err, KERN_ERR);
> +define_dev_printk_level(_dev_warn, KERN_WARNING);
> +define_dev_printk_level(_dev_notice, KERN_NOTICE);
> define_dev_printk_level(_dev_info, KERN_INFO);
>
> #endif
> diff --git a/include/linux/device.h b/include/linux/device.h
> index 563077d1cdc1..49c6b5d6a9f8 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -1306,30 +1306,34 @@ struct device_link *device_link_add(struct device *consumer,
> struct device *supplier, u32 flags);
> void device_link_del(struct device_link *link);
>
> +#ifndef dev_fmt
> +#define dev_fmt(fmt) fmt
> +#endif
> +
> #ifdef CONFIG_PRINTK
>
> -extern __printf(3, 0)
> +__printf(3, 0)
> int dev_vprintk_emit(int level, const struct device *dev,
> const char *fmt, va_list args);
> -extern __printf(3, 4)
> +__printf(3, 4)
> int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
>
> -extern __printf(3, 4)
> +__printf(3, 4)
> void dev_printk(const char *level, const struct device *dev,
> const char *fmt, ...);
> -extern __printf(2, 3)
> -void dev_emerg(const struct device *dev, const char *fmt, ...);
> -extern __printf(2, 3)
> -void dev_alert(const struct device *dev, const char *fmt, ...);
> -extern __printf(2, 3)
> -void dev_crit(const struct device *dev, const char *fmt, ...);
> -extern __printf(2, 3)
> -void dev_err(const struct device *dev, const char *fmt, ...);
> -extern __printf(2, 3)
> -void dev_warn(const struct device *dev, const char *fmt, ...);
> -extern __printf(2, 3)
> -void dev_notice(const struct device *dev, const char *fmt, ...);
> -extern __printf(2, 3)
> +__printf(2, 3)
> +void _dev_emerg(const struct device *dev, const char *fmt, ...);
> +__printf(2, 3)
> +void _dev_alert(const struct device *dev, const char *fmt, ...);
> +__printf(2, 3)
> +void _dev_crit(const struct device *dev, const char *fmt, ...);
> +__printf(2, 3)
> +void _dev_err(const struct device *dev, const char *fmt, ...);
> +__printf(2, 3)
> +void _dev_warn(const struct device *dev, const char *fmt, ...);
> +__printf(2, 3)
> +void _dev_notice(const struct device *dev, const char *fmt, ...);
> +__printf(2, 3)
> void _dev_info(const struct device *dev, const char *fmt, ...);
>
> #else
> @@ -1347,26 +1351,26 @@ static inline void __dev_printk(const char *level, const struct device *dev,
> {}
> static inline __printf(3, 4)
> void dev_printk(const char *level, const struct device *dev,
> - const char *fmt, ...)
> + const char *fmt, ...)
> {}
>
> static inline __printf(2, 3)
> -void dev_emerg(const struct device *dev, const char *fmt, ...)
> +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, ...)
> +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, ...)
> +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, ...)
> +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, ...)
> +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, ...)
> +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, ...)
> @@ -1375,27 +1379,36 @@ void _dev_info(const struct device *dev, const char *fmt, ...)
> #endif
>
> /*
> - * Stupid hackaround for existing uses of non-printk uses dev_info
> - *
> - * Note that the definition of dev_info below is actually _dev_info
> - * and a macro is used to avoid redefining dev_info
> + * #defines for all the dev_<level> macros to prefix with whatever
> + * possible use of #define dev_fmt(fmt) ...
> */
>
> -#define dev_info(dev, fmt, arg...) _dev_info(dev, fmt, ##arg)
> +#define dev_emerg(dev, fmt, ...) \
> + _dev_emerg(dev, dev_fmt(fmt), ##__VA_ARGS__)
> +#define dev_crit(dev, fmt, ...) \
> + _dev_crit(dev, dev_fmt(fmt), ##__VA_ARGS__)
> +#define dev_alert(dev, fmt, ...) \
> + _dev_alert(dev, dev_fmt(fmt), ##__VA_ARGS__)
> +#define dev_err(dev, fmt, ...) \
> + _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
> +#define dev_warn(dev, fmt, ...) \
> + _dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__)
> +#define dev_notice(dev, fmt, ...) \
> + _dev_notice(dev, dev_fmt(fmt), ##__VA_ARGS__)
> +#define dev_info(dev, fmt, ...) \
> + _dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
>
> #if defined(CONFIG_DYNAMIC_DEBUG)
> -#define dev_dbg(dev, format, ...) \
> -do { \
> - dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
> -} while (0)
> +#define dev_dbg(dev, fmt, ...) \
> + dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
> #elif defined(DEBUG)
> -#define dev_dbg(dev, format, arg...) \
> - dev_printk(KERN_DEBUG, dev, format, ##arg)
> +#define dev_dbg(dev, fmt, ...) \
> + dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
> #else
> -#define dev_dbg(dev, format, arg...) \
> -({ \
> - if (0) \
> - dev_printk(KERN_DEBUG, dev, format, ##arg); \
> +#define dev_dbg(dev, fmt, ...) \
> +({ \
> + if (0) \
> + dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
> })
> #endif
>
> @@ -1467,7 +1480,7 @@ do { \
> DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
> if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) && \
> __ratelimit(&_rs)) \
> - __dynamic_dev_dbg(&descriptor, dev, fmt, \
> + __dynamic_dev_dbg(&descriptor, dev, dev_fmt(fmt), \
> ##__VA_ARGS__); \
> } while (0)
> #elif defined(DEBUG)
> @@ -1477,23 +1490,23 @@ do { \
> DEFAULT_RATELIMIT_INTERVAL, \
> DEFAULT_RATELIMIT_BURST); \
> if (__ratelimit(&_rs)) \
> - dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__); \
> + 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, fmt, ##__VA_ARGS__); \
> + 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, format, arg...) \
> -({ \
> - if (0) \
> - dev_printk(KERN_DEBUG, dev, format, ##arg); \
> +#define dev_vdbg(dev, fmt, ...) \
> +({ \
> + if (0) \
> + dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
> })
> #endif
>
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