dynamic_debug: Add __dynamic_dev_dbg

Unlike dynamic_pr_debug, dynamic uses of dev_dbg can not
currently add task_pid/KBUILD_MODNAME/__func__/__LINE__
to selected debug output.

Add a new function similar to dynamic_pr_debug to
optionally emit these prefixes.

Cc: Aloisio Almeida <aloisio.almeida@openbossa.org>
Noticed-by: Aloisio Almeida <aloisio.almeida@openbossa.org>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 8 insertions, 2 deletions

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index e747ecd48e1c..bdf15319944e 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -47,6 +47,13 @@ extern int ddebug_remove_module(const char *mod_name);
 extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...)
         __attribute__ ((format (printf, 2, 3)));
 
+struct device;
+
+extern int __dynamic_dev_dbg(struct _ddebug *descriptor,
+                             const struct device *dev,
+                             const char *fmt, ...)
+        __attribute__ ((format (printf, 3, 4)));
+
 #define dynamic_pr_debug(fmt, ...) do {                                 \
         static struct _ddebug descriptor                                \
         __used                                                          \
@@ -57,7 +64,6 @@ extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...)
                 __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \
         } while (0)
 
-
 #define dynamic_dev_dbg(dev, fmt, ...) do {                             \
         static struct _ddebug descriptor                                \
         __used                                                          \
@@ -65,7 +71,7 @@ extern int __dynamic_pr_debug(struct _ddebug *descriptor, const char *fmt, ...)
         { KBUILD_MODNAME, __func__, __FILE__, fmt, __LINE__,            \
                 _DPRINTK_FLAGS_DEFAULT };                               \
         if (unlikely(descriptor.enabled))                               \
-                dev_printk(KERN_DEBUG, dev, fmt, ##__VA_ARGS__);        \
+                __dynamic_dev_dbg(&descriptor, dev, fmt, ##__VA_ARGS__);        \
         } while (0)
 
 #else