[PATCH] reduce syslog clutter (take 2)

[Tilman Schmidt <tilman@imap.cc>]

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The current versions of the err() / info() / warn() syslog macros
insert __FILE__ at the beginning of the message, which expands to
the complete path name of the source file within the kernel tree.

With the following patch, when used in a module, they'll insert the
module name instead, which is significantly shorter and also tends to
be more useful to users trying to make sense of a particular message.

This patch replaces the one posted on 24 Feb 2006 10:50:52 +0100
which caused compile errors in non-modular drivers. It applies to
kernel 2.6.16-rc5 after the patch labeled
"add macros notice(), dev_notice() (take 2)".

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
---

 usb.h |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

--- linux-2.6.16-rc5-patch-splitpoint/include/linux/usb.h	2006-03-08 12:36:03.000000000 +0100
+++ linux-2.6.16-rc5-patch-splitpoint2/include/linux/usb.h	2006-03-08 12:43:07.000000000 +0100
@@ -1199,14 +1199,20 @@
 #define dbg(format, arg...) do {} while (0)
 #endif

+#if defined(CONFIG_MODULES) && defined(THIS_MODULE)
+#define KMSG_LOCATION_PREFIX THIS_MODULE ? THIS_MODULE->name : __FILE__
+#else
+#define KMSG_LOCATION_PREFIX __FILE__
+#endif
+
 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
-	__FILE__ , ## arg)
+	KMSG_LOCATION_PREFIX , ## arg)
 #define info(format, arg...) printk(KERN_INFO "%s: " format "\n" , \
-	__FILE__ , ## arg)
+	KMSG_LOCATION_PREFIX , ## arg)
 #define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n" , \
-	__FILE__ , ## arg)
+	KMSG_LOCATION_PREFIX , ## arg)
 #define notice(format, arg...) printk(KERN_NOTICE "%s: " format "\n" , \
-	__FILE__ , ## arg)
+	KMSG_LOCATION_PREFIX , ## arg)


 #endif  /* __KERNEL__ */

-- 
Tilman Schmidt                          E-Mail: tilman@imap.cc
Bonn, Germany
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