Index: linux-2.6.21-rc5/include/linux/kallsyms.h
===================================================================
--- linux-2.6.21-rc5.orig/include/linux/kallsyms.h	2007-03-26 16:16:21.000000000 -0700
+++ linux-2.6.21-rc5/include/linux/kallsyms.h	2007-03-28 18:52:55.000000000 -0700
@@ -5,6 +5,7 @@
 #ifndef _LINUX_KALLSYMS_H
 #define _LINUX_KALLSYMS_H
 
+#include <linux/kernel.h>
 
 #define KSYM_NAME_LEN 127
 
@@ -75,6 +76,25 @@ static inline void print_symbol(const ch
 		       __builtin_extract_return_addr((void *)addr));
 }
 
+/* From mm */
+static inline int sprint_symbol(char *buffer, unsigned long address)
+{
+	char *modname;
+	const char *name;
+        unsigned long offset, size;
+        char namebuf[KSYM_NAME_LEN+1];
+
+        name = kallsyms_lookup(address, &size, &offset, &modname, namebuf);
+	if (!name)
+		return sprintf(buffer, "0x%lx", address);
+
+        if (modname)
+		return sprintf(buffer, "%s+%#lx/%#lx [%s]", name, offset,
+			size, modname);
+
+	return sprintf(buffer, "%s+%#lx/%#lx", name, offset, size);
+}
+
 #ifndef CONFIG_64BIT
 #define print_ip_sym(ip)		\
 do {					\