Remove unnecessary function_name and prefix arguments.
Removing these arguments reduces object size.

prefix is used to add an "ERROR" prefix to the format for
DRM_DEV_ERROR and is an empty string for all other uses.
This string can be added instead by the DRM_DEV_ERROR macro.

function_name is used to emit the calling function.
This can be done by using %ps and __builtin_return_address(0).

Signed-off-by: Joe Perches <j...@perches.com>
---
 drivers/gpu/drm/drm_drv.c | 12 +++++-------
 include/drm/drmP.h        | 42 ++++++++++++++++++------------------------
 include/drm/drm_drv.h     |  5 ++---
 3 files changed, 25 insertions(+), 34 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index be38ac7050d4..4d0f2c5197f3 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -74,11 +74,8 @@ static bool drm_core_init_complete = false;
 
 static struct dentry *drm_debugfs_root;
 
-#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, ...)
+                   unsigned int category, const char *format, ...)
 {
        struct va_format vaf;
        va_list args;
@@ -91,10 +88,11 @@ void drm_dev_printk(const struct device *dev, const char 
*level,
        vaf.va = &args;
 
        if (dev)
-               dev_printk(level, dev, DRM_PRINTK_FMT, function_name, prefix,
-                          &vaf);
+               dev_printk(level, dev, "[" DRM_NAME ":%ps] %pV",
+                          __builtin_return_address(0), &vaf);
        else
-               printk("%s" DRM_PRINTK_FMT, level, function_name, prefix, &vaf);
+               printk("%s[" DRM_NAME ":%ps] %pV",
+                      level, __builtin_return_address(0), &vaf);
 
        va_end(args);
 }
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 7277783a4ff0..16dd63ffa1ff 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -172,8 +172,8 @@ struct pci_controller;
  * \param arg arguments
  */
 #define DRM_DEV_ERROR(dev, fmt, ...)                                   \
-       drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\
-                      fmt, ##__VA_ARGS__)
+       drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE,                      \
+                      "*ERROR* " fmt, ##__VA_ARGS__)
 #define DRM_ERROR(fmt, ...)                                            \
        drm_printk(KERN_ERR, DRM_UT_NONE, fmt,  ##__VA_ARGS__)
 
@@ -196,8 +196,8 @@ struct pci_controller;
        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__)
+       drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE,                     \
+                      fmt, ##__VA_ARGS__)
 
 #define DRM_DEV_INFO_ONCE(dev, fmt, ...)                               \
 ({                                                                     \
@@ -214,50 +214,44 @@ struct pci_controller;
  * \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_DEV_DEBUG(dev, fmt, ...)                                   \
+       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, fmt, ##__VA_ARGS__)
 #define DRM_DEBUG(fmt, ...)                                            \
        drm_printk(KERN_DEBUG, DRM_UT_CORE, fmt, ##__VA_ARGS__)
 
-#define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...)                                
\
-       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "",    \
-                      fmt, ##args)
+#define DRM_DEV_DEBUG_DRIVER(dev, fmt, ...)                            \
+       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
 #define DRM_DEBUG_DRIVER(fmt, ...)                                     \
        drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
 
-#define DRM_DEV_DEBUG_KMS(dev, fmt, args...)                           \
-       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt,  \
-                      ##args)
+#define DRM_DEV_DEBUG_KMS(dev, fmt, ...)                               \
+       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, fmt, ##__VA_ARGS__)
 #define DRM_DEBUG_KMS(fmt, ...)                                        \
        drm_printk(KERN_DEBUG, DRM_UT_KMS, fmt, ##__VA_ARGS__)
 
-#define DRM_DEV_DEBUG_PRIME(dev, fmt, args...)                         \
-       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "",     \
-                      fmt, ##args)
+#define DRM_DEV_DEBUG_PRIME(dev, fmt, ...)                             \
+       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, ##__VA_ARGS__)
 #define DRM_DEBUG_PRIME(fmt, ...)                                      \
        drm_printk(KERN_DEBUG, DRM_UT_PRIME, fmt, ##__VA_ARGS__)
 
-#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...)                                
\
-       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "",    \
-                      fmt, ##args)
+#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, ...)                            \
+       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__)
 #define DRM_DEBUG_ATOMIC(fmt, ...)                                     \
        drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__)
 
-#define DRM_DEV_DEBUG_VBL(dev, fmt, args...)                           \
-       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt,  \
-                      ##args)
+#define DRM_DEV_DEBUG_VBL(dev, fmt, ...)                               \
+       drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, fmt, ##__VA_ARGS__)
 #define DRM_DEBUG_VBL(fmt, ...)                                        \
        drm_printk(KERN_DEBUG, DRM_UT_VBL, fmt, ##__VA_ARGS__)
 
-#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...)    \
+#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, ...)                
\
 ({                                                                     \
        static DEFINE_RATELIMIT_STATE(_rs,                              \
                                      DEFAULT_RATELIMIT_INTERVAL,       \
                                      DEFAULT_RATELIMIT_BURST);         \
        if (__ratelimit(&_rs))                                          \
                drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level,       \
-                              __func__, "", fmt, ##args);              \
+                              fmt, ##__VA_ARGS__);             \
 })
 
 /**
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index 71bbaaec836d..f6430f183ca8 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -592,10 +592,9 @@ struct drm_driver {
        int dev_priv_size;
 };
 
-__printf(6, 7)
+__printf(4, 5)
 void drm_dev_printk(const struct device *dev, const char *level,
-                   unsigned int category, const char *function_name,
-                   const char *prefix, const char *format, ...);
+                   unsigned int category, const char *format, ...);
 __printf(3, 4)
 void drm_printk(const char *level, unsigned int category,
                const char *format, ...);
-- 
2.10.0.rc2.1.g053435c

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