diff -r f497542af8e4 -r 538db54a451d kernel/eka/include/nkernsmp/nk_priv.h
--- a/kernel/eka/include/nkernsmp/nk_priv.h	Tue Jan 19 13:48:03 2010 +0000
+++ b/kernel/eka/include/nkernsmp/nk_priv.h	Mon Jan 18 21:31:10 2010 +0200
@@ -781,6 +781,17 @@
 
 
 //declarations for the checking of kernel preconditions
+
+/**
+@internalComponent
+
+PRECOND_FUNCTION_CALLER is needed for __ASSERT_WITH_MESSAGE_ALWAYS(),
+so is outside the #ifdef _DEBUG.
+*/
+#ifndef PRECOND_FUNCTION_CALLER
+#define PRECOND_FUNCTION_CALLER		0
+#endif
+
 #ifdef _DEBUG
 
 /**
@@ -816,7 +827,7 @@
 /**
 @internalComponent
 */
-#define CHECK_PRECONDITIONS(mask,function) CheckPreconditions(mask,function,0)
+#define CHECK_PRECONDITIONS(mask,function) CheckPreconditions(mask,function,PRECOND_FUNCTION_CALLER)
 
 #ifdef __KERNEL_APIS_CONTEXT_CHECKS_FAULT__
 
@@ -825,7 +836,7 @@
 */
 #define __ASSERT_WITH_MESSAGE_DEBUG(cond,message,function) \
 			__ASSERT_DEBUG( (cond), ( \
-			DEBUGPRINT("Assertion failed: %s\nFunction: %s\n",message,function),\
+			DEBUGPRINT("Assertion failed: %s\nFunction: %s; called from: %08x\n",message,function,PRECOND_FUNCTION_CALLER),\
 			NKFault(function, 0)))
 
 #else//!__KERNEL_APIS_CONTEXT_CHECKS_FAULT__
@@ -834,7 +845,7 @@
 */
 #define __ASSERT_WITH_MESSAGE_DEBUG(cond,message,function) \
 			__ASSERT_DEBUG( (cond), \
-			DEBUGPRINT("Assertion failed: %s\nFunction: %s\n",message,function))
+			DEBUGPRINT("Assertion failed: %s\nFunction: %s; called from: %08x\n",message,function,PRECOND_FUNCTION_CALLER))
 
 
 #endif//__KERNEL_APIS_CONTEXT_CHECKS_FAULT__
@@ -856,7 +867,7 @@
 */
 #define __ASSERT_WITH_MESSAGE_ALWAYS(cond,message,function) \
 			__ASSERT_ALWAYS( (cond), ( \
-			DEBUGPRINT("Assertion failed: %s\nFunction: %s\n",message,function),\
+			DEBUGPRINT("Assertion failed: %s\nFunction: %s; called from: %08x\n",message,function,PRECOND_FUNCTION_CALLER),\
 			NKFault(function, 0)))
 #else
 /**
@@ -864,7 +875,7 @@
 */
 #define __ASSERT_WITH_MESSAGE_ALWAYS(cond,message,function) \
 			__ASSERT_ALWAYS( (cond), \
-			DEBUGPRINT("Assertion failed: %s\nFunction: %s\n",message,function))
+			DEBUGPRINT("Assertion failed: %s\nFunction: %s; called from: %08x\n",message,function,PRECOND_FUNCTION_CALLER))
 #endif//__KERNEL_APIS_CONTEXT_CHECKS_FAULT__
 #endif//(!defined (__KERNEL_APIS_CONTEXT_CHECKS_WARNING__)&&!defined (__KERNEL_APIS_CONTEXT_CHECKS_FAULT__))