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Commit c4e68a58 authored by Sean Paul's avatar Sean Paul
Browse files

drm: Introduce DRM_DEV_* log messages 



This patch consolidates all the various log functions/macros into
one uber function, drm_log. It also introduces some new DRM_DEV_*
variants that print the device name to delineate multiple devices
of the same type.

Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarEric Engestrom <eric.engestrom@imgtec.com>
Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1471303084-3757-1-git-send-email-seanpaul@chromium.org
parent 8f0e4907

drivers/gpu/drm/drm_drv.c

+19 −8
Original line number Diff line number Diff line
@@ -63,37 +63,48 @@ static struct idr drm_minors_idr; 


static struct dentry *drm_debugfs_root;



void drm_err(const char *format, ...)

#define DRM_PRINTK_FMT "[" DRM_NAME ":%s]%s %pV"



void drm_dev_printk(const struct device *dev, const char *level,

		    unsigned int category, const char *function_name,

		    const char *prefix, const char *format, ...)

{

	struct va_format vaf;

	va_list args;



	va_start(args, format);

	if (category != DRM_UT_NONE && !(drm_debug & category))

		return;



	va_start(args, format);

	vaf.fmt = format;

	vaf.va = &args;



	printk(KERN_ERR "[" DRM_NAME ":%ps] *ERROR* %pV",

	       __builtin_return_address(0), &vaf);

	dev_printk(level, dev, DRM_PRINTK_FMT, function_name, prefix,

		   &vaf);



	va_end(args);

}

EXPORT_SYMBOL(drm_err);

EXPORT_SYMBOL(drm_dev_printk);



void drm_ut_debug_printk(const char *function_name, const char *format, ...)

void drm_printk(const char *level, unsigned int category,

		const char *function_name, const char *prefix,

		const char *format, ...)

{

	struct va_format vaf;

	va_list args;



	if (category != DRM_UT_NONE && !(drm_debug & category))

		return;



	va_start(args, format);

	vaf.fmt = format;

	vaf.va = &args;



	printk(KERN_DEBUG "[" DRM_NAME ":%s] %pV", function_name, &vaf);

	printk("%s" DRM_PRINTK_FMT, level, function_name, prefix, &vaf);



	va_end(args);

}

EXPORT_SYMBOL(drm_ut_debug_printk);

EXPORT_SYMBOL(drm_printk);



/*

 * DRM Minors

include/drm/drmP.h

+84 −56
Original line number Diff line number Diff line
@@ -127,6 +127,7 @@ struct dma_buf_attachment; 
 * run-time by echoing the debug value in its sysfs node:

 *   # echo 0xf > /sys/module/drm/parameters/debug

 */

#define DRM_UT_NONE		0x00

#define DRM_UT_CORE 		0x01

#define DRM_UT_DRIVER		0x02

#define DRM_UT_KMS		0x04
@@ -134,11 +135,15 @@ struct dma_buf_attachment; 
#define DRM_UT_ATOMIC		0x10

#define DRM_UT_VBL		0x20



extern __printf(2, 3)

void drm_ut_debug_printk(const char *function_name,

extern __printf(6, 7)

void drm_dev_printk(const struct device *dev, const char *level,

		    unsigned int category, const char *function_name,

		    const char *prefix, const char *format, ...);



extern __printf(5, 6)

void drm_printk(const char *level, unsigned int category,

		const char *function_name, const char *prefix,

		const char *format, ...);

extern __printf(1, 2)

void drm_err(const char *format, ...);



/***********************************************************************/

/** \name DRM template customization defaults */
@@ -169,8 +174,12 @@ void drm_err(const char *format, ...); 
 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_DEV_ERROR(dev, fmt, ...)					\

	drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\

		       fmt, ##__VA_ARGS__)

#define DRM_ERROR(fmt, ...)						\

	drm_err(fmt, ##__VA_ARGS__)

	drm_printk(KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*", fmt,	\

		   ##__VA_ARGS__)



/**

 * Rate limited error output.  Like DRM_ERROR() but won't flood the log.
@@ -178,21 +187,33 @@ void drm_err(const char *format, ...); 
 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_ERROR_RATELIMITED(fmt, ...)				\

#define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...)			\

({									\

	static DEFINE_RATELIMIT_STATE(_rs,				\

				      DEFAULT_RATELIMIT_INTERVAL,	\

				      DEFAULT_RATELIMIT_BURST);		\

									\

	if (__ratelimit(&_rs))						\

		drm_err(fmt, ##__VA_ARGS__);				\

		DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__);			\

})

#define DRM_ERROR_RATELIMITED(fmt, ...)					\

	DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__)



#define DRM_DEV_INFO(dev, fmt, ...)					\

	drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt,	\

		       ##__VA_ARGS__)

#define DRM_INFO(fmt, ...)						\

	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)

	drm_printk(KERN_INFO, DRM_UT_NONE, __func__, "", fmt, ##__VA_ARGS__)



#define DRM_INFO_ONCE(fmt, ...)				\

	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)

#define DRM_DEV_INFO_ONCE(dev, fmt, ...)				\

({									\

	static bool __print_once __read_mostly;				\

	if (!__print_once) {						\

		__print_once = true;					\

		DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__);			\

	}								\

})

#define DRM_INFO_ONCE(fmt, ...) DRM_DEV_INFO_ONCE(NULL, fmt, ##__VA_ARGS__)



/**

 * Debug output.
@@ -200,52 +221,51 @@ void drm_err(const char *format, ...); 
 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_DEV_DEBUG(dev, fmt, args...)				\

	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt,	\

		       ##args)

#define DRM_DEBUG(fmt, args...)						\

	do {								\

		if (unlikely(drm_debug & DRM_UT_CORE))			\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)

	drm_printk(KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, ##args)



#define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...)				\

	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "",	\

		       fmt, ##args)

#define DRM_DEBUG_DRIVER(fmt, args...)					\

	do {								\

		if (unlikely(drm_debug & DRM_UT_DRIVER))		\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)

	drm_printk(KERN_DEBUG, DRM_UT_DRIVER, __func__, "", fmt, ##args)



#define DRM_DEV_DEBUG_KMS(dev, fmt, args...)				\

	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt,	\

		       ##args)

#define DRM_DEBUG_KMS(fmt, args...)					\

	do {								\

		if (unlikely(drm_debug & DRM_UT_KMS))			\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)

	drm_printk(KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, ##args)



#define DRM_DEV_DEBUG_PRIME(dev, fmt, args...)				\

	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "",	\

		       fmt, ##args)

#define DRM_DEBUG_PRIME(fmt, args...)					\

	do {								\

		if (unlikely(drm_debug & DRM_UT_PRIME))			\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)

	drm_printk(KERN_DEBUG, DRM_UT_PRIME, __func__, "", fmt, ##args)



#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...)				\

	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "",	\

		       fmt, ##args)

#define DRM_DEBUG_ATOMIC(fmt, args...)					\

	do {								\

		if (unlikely(drm_debug & DRM_UT_ATOMIC))		\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)

	drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", fmt, ##args)



#define DRM_DEV_DEBUG_VBL(dev, fmt, args...)				\

	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt,	\

		       ##args)

#define DRM_DEBUG_VBL(fmt, args...)					\

	do {								\

		if (unlikely(drm_debug & DRM_UT_VBL))			\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)



#define _DRM_DEFINE_DEBUG_RATELIMITED(level, fmt, args...)		\

	do {								\

		if (unlikely(drm_debug & DRM_UT_ ## level)) {		\

			static DEFINE_RATELIMIT_STATE(			\

				_rs,					\

	drm_printk(KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, ##args)



#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...)	\

({									\

	static DEFINE_RATELIMIT_STATE(_rs,				\

				      DEFAULT_RATELIMIT_INTERVAL,	\

				      DEFAULT_RATELIMIT_BURST);		\

									\

			if (__ratelimit(&_rs)) {			\

				drm_ut_debug_printk(__func__, fmt,	\

						    ##args);		\

			}						\

		}							\

	} while (0)

	if (__ratelimit(&_rs))						\

		drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level,	\

			       __func__, "", fmt, ##args);		\

})



/**

 * Rate limited debug output. Like DRM_DEBUG() but won't flood the log.
@@ -253,14 +273,22 @@ void drm_err(const char *format, ...); 
 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...)			\

	DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args)

#define DRM_DEBUG_RATELIMITED(fmt, args...)				\

	_DRM_DEFINE_DEBUG_RATELIMITED(CORE, fmt, ##args)

	DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args)

#define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...)		\

	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args)

#define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...)			\

	_DRM_DEFINE_DEBUG_RATELIMITED(DRIVER, fmt, ##args)

	DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args)

#define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...)		\

	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args)

#define DRM_DEBUG_KMS_RATELIMITED(fmt, args...)				\

	_DRM_DEFINE_DEBUG_RATELIMITED(KMS, fmt, ##args)

	DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args)

#define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...)		\

	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args)

#define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...)			\

	_DRM_DEFINE_DEBUG_RATELIMITED(PRIME, fmt, ##args)

	DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args)



/*@}*/