diff -Nur linux-2.6.1-1.138.2.1/Makefile linux-2.6.1-1.138.2.1.new/Makefile
--- linux-2.6.1-1.138.2.1/Makefile      2004-04-20 12:47:56.000000000 +0900
+++ linux-2.6.1-1.138.2.1.new/Makefile  2004-04-20 13:36:22.171653000 +0900
@@ -272,7 +272,7 @@

 NOSTDINC_FLAGS  = -nostdinc -iwithprefix include

-CPPFLAGS        := -D__KERNEL__ -Iinclude \
+CPPFLAGS        := -D__KERNEL__ -D__EXPAND_LOGLEVEL__ -Iinclude \
                   $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)

 CFLAGS                 := -Wall -Wstrict-prototypes -Wno-trigraphs \
diff -Nur linux-2.6.1-1.138.2.1/include/linux/kernel.h linux-2.6.1-
1.138.2.1.new/include/linux/kernel.h
--- linux-2.6.1-1.138.2.1/include/linux/kernel.h        2004-04-20 12:47:57.000000000 +0900
+++ linux-2.6.1-1.138.2.1.new/include/linux/kernel.h    2004-04-20 13:36:22.000000000 +0900
@@ -27,14 +27,28 @@
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 #define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))

-#define        KERN_EMERG      "<0>"   /* system is unusable                  */
-#define        KERN_ALERT      "<1>"   /* action must be taken immediately    */
-#define        KERN_CRIT       "<2>"   /* critical conditions                 */
-#define        KERN_ERR        "<3>"   /* error conditions                    */
-#define        KERN_WARNING    "<4>"   /* warning conditions                  */
-#define        KERN_NOTICE     "<5>"   /* normal but significant condition    */
-#define        KERN_INFO       "<6>"   /* informational                       */
-#define        KERN_DEBUG      "<7>"   /* debug-level messages                */
+#ifdef __EXPAND_LOGLEVEL__
+#define stringize(p) #p
+#define _expand_printk(a) stringize(a)
+#define stringize_linenum() _expand_printk(__LINE__)
+#define KERN_EMERG      "<0>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_ALERT      "<1>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_CRIT       "<2>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_ERR        "<3>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_WARNING    "<4>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_NOTICE     "<5>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_INFO       "<6>" __FILE__ "(" stringize_linenum() ")"
+#define KERN_DEBUG      "<7>" __FILE__ "(" stringize_linenum() ")"
+#else
+#define KERN_EMERG      "<0>"   /* system is unusable                   */
+#define KERN_ALERT      "<1>"   /* action must be taken immediately     */
+#define KERN_CRIT       "<2>"   /* critical conditions                  */
+#define KERN_ERR        "<3>"   /* error conditions                     */
+#define KERN_WARNING    "<4>"   /* warning conditions                   */
+#define KERN_NOTICE     "<5>"   /* normal but significant condition     */
+#define KERN_INFO       "<6>"   /* informational                        */
+#define KERN_DEBUG      "<7>"   /* debug-level messages                 */
+#endif

 extern int console_printk[];