[RFC 4/5] drm: Use drm_printk for all logging macros

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Eliminate _DRM_PRINTK macro and use drm_printk for all log levels.

This required drm_printk to vary the verbosity level of the logged
metadata depending on the log level.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 drivers/gpu/drm/drm_drv.c | 31 ++++++++++++++++++++++---------
 include/drm/drmP.h        | 44 ++++++++++++++++++++++++++++++--------------
 2 files changed, 52 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index a2f4eb4509b9..bda4639c73e4 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -80,12 +80,21 @@ void drm_dev_printk(const struct device *dev, const char *level,
 	vaf.fmt = format;
 	vaf.va = &args;
 
-	if (dev)
-		dev_printk(level, dev, "[%s:%ps]%s %pV",
-			   driver, function_name, prefix, &vaf);
-	else
-		printk("%s[%s:%ps]%s %pV",
-		       level, driver, function_name, prefix, &vaf);
+	if (level[1] != KERN_DEBUG[1]) {
+		if (dev)
+			dev_printk(level, dev, "[%s]%s %pV",
+				   driver, prefix, &vaf);
+		else
+			printk("%s[%s]%s %pV",
+			       level, driver, prefix, &vaf);
+	} else {
+		if (dev)
+			dev_printk(level, dev, "[%s:%ps]%s %pV",
+				   driver, function_name, prefix, &vaf);
+		else
+			printk("%s[%s:%ps]%s %pV",
+			       level, driver, function_name, prefix, &vaf);
+	}
 
 	va_end(args);
 }
@@ -104,9 +113,13 @@ void drm_printk(const char *level, unsigned int category,
 	vaf.fmt = format;
 	vaf.va = &args;
 
-	printk("%s[%s:%ps]%s %pV",
-	       level, driver, __builtin_return_address(0),
-	       strcmp(level, KERN_ERR) == 0 ? " *ERROR*" : "", &vaf);
+	if (level[1] != KERN_DEBUG[1])
+		printk("%s[%s]%s %pV",
+		       level, driver,
+		       strcmp(level, KERN_ERR) == 0 ? " *ERROR*" : "", &vaf);
+	else
+		printk("%s[%s:%ps] %pV",
+		       level, driver, __builtin_return_address(0), &vaf);
 
 	va_end(args);
 }
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 8661045ffaf1..b8f9dcd49b36 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -146,25 +146,41 @@ struct dma_buf_attachment;
 /** \name Macros to make printk easier */
 /*@{*/
 
-#define _DRM_PRINTK(once, level, fmt, ...)				\
-	do {								\
-		printk##once(KERN_##level "[" DRM_NAME "] " fmt,	\
-			     ##__VA_ARGS__);				\
-	} while (0)
-
 #define DRM_INFO(fmt, ...)						\
-	_DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)
-#define DRM_NOTE(fmt, ...)						\
-	_DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)
-#define DRM_WARN(fmt, ...)						\
-	_DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__)
+	drm_printk(KERN_INFO, DRM_UT_NONE, DRM_NAME, fmt, ##__VA_ARGS__)
 
 #define DRM_INFO_ONCE(fmt, ...)						\
-	_DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__)
+({									\
+	static bool __print_once __read_mostly;				\
+	if (!__print_once) {						\
+		__print_once = true;					\
+		DRM_INFO(fmt, ##__VA_ARGS__);				\
+	}								\
+})
+
+#define DRM_NOTE(fmt, ...)						\
+	drm_printk(KERN_NOTICE, DRM_UT_NONE, DRM_NAME, fmt, ##__VA_ARGS__)
+
 #define DRM_NOTE_ONCE(fmt, ...)						\
-	_DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__)
+({									\
+	static bool __print_once __read_mostly;				\
+	if (!__print_once) {						\
+		__print_once = true;					\
+		DRM_NOTE(fmt, ##__VA_ARGS__);				\
+	}								\
+})
+
+#define DRM_WARN(fmt, ...)						\
+	drm_printk(KERN_WARNING, DRM_UT_NONE, DRM_NAME, fmt, ##__VA_ARGS__)
+
 #define DRM_WARN_ONCE(fmt, ...)						\
-	_DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__)
+({									\
+	static bool __print_once __read_mostly;				\
+	if (!__print_once) {						\
+		__print_once = true;					\
+		DRM_WARN(fmt, ##__VA_ARGS__);				\
+	}								\
+})
 
 /**
  * Error output.
-- 
2.7.4