diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 5740e90..d33bcde 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -28,7 +28,8 @@
 LIST_HEAD(ftrace_events);
 
 int trace_define_field(struct ftrace_event_call *call, const char *type,
-		       const char *name, int offset, int size, int is_signed)
+		       const char *name, int offset, int size, int is_signed,
+		       int filter_type)
 {
 	struct ftrace_event_field *field;
 
@@ -44,7 +45,11 @@
 	if (!field->type)
 		goto err;
 
-	field->filter_type = filter_assign_type(type);
+	if (filter_type == FILTER_OTHER)
+		field->filter_type = filter_assign_type(type);
+	else
+		field->filter_type = filter_type;
+
 	field->offset = offset;
 	field->size = size;
 	field->is_signed = is_signed;
@@ -68,7 +73,7 @@
 	ret = trace_define_field(call, #type, "common_" #item,		\
 				 offsetof(typeof(ent), item),		\
 				 sizeof(ent.item),			\
-				 is_signed_type(type));			\
+				 is_signed_type(type), FILTER_OTHER);	\
 	if (ret)							\
 		return ret;
 
diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 22e6d82..8a8e576 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -475,12 +475,6 @@
 	return 0;
 }
 
-enum {
-	FILTER_OTHER = 0,
-	FILTER_STATIC_STRING,
-	FILTER_DYN_STRING,
-};
-
 int filter_assign_type(const char *type)
 {
 	if (strstr(type, "__data_loc") && strstr(type, "char"))
diff --git a/kernel/trace/trace_export.c b/kernel/trace/trace_export.c
index 7087530..029a91f 100644
--- a/kernel/trace/trace_export.c
+++ b/kernel/trace/trace_export.c
@@ -158,7 +158,8 @@
 #define TRACE_FIELD(type, item, assign)					\
 	ret = trace_define_field(event_call, #type, #item,		\
 				 offsetof(typeof(field), item),		\
-				 sizeof(field.item), is_signed_type(type));	\
+				 sizeof(field.item),			\
+				 is_signed_type(type), FILTER_OTHER);	\
 	if (ret)							\
 		return ret;
 
@@ -166,7 +167,7 @@
 #define TRACE_FIELD_SPECIAL(type, item, len, cmd)			\
 	ret = trace_define_field(event_call, #type "[" #len "]", #item,	\
 				 offsetof(typeof(field), item),		\
-				 sizeof(field.item), 0);		\
+				 sizeof(field.item), 0, FILTER_OTHER);	\
 	if (ret)							\
 		return ret;
 
@@ -174,7 +175,8 @@
 #define TRACE_FIELD_SIGN(type, item, assign, is_signed)			\
 	ret = trace_define_field(event_call, #type, #item,		\
 				 offsetof(typeof(field), item),		\
-				 sizeof(field.item), is_signed);	\
+				 sizeof(field.item), is_signed,		\
+				 FILTER_OTHER);				\
 	if (ret)							\
 		return ret;
 
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 46c1b977a..97a2454 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -194,7 +194,8 @@
 	for (i = 0; i < meta->nb_args; i++) {
 		ret = trace_define_field(call, meta->types[i],
 					 meta->args[i], offset,
-					 sizeof(unsigned long), 0);
+					 sizeof(unsigned long), 0,
+					 FILTER_OTHER);
 		offset += sizeof(unsigned long);
 	}
 
@@ -210,7 +211,8 @@
 	if (ret)
 		return ret;
 
-	ret = trace_define_field(call, SYSCALL_FIELD(unsigned long, ret), 0);
+	ret = trace_define_field(call, SYSCALL_FIELD(unsigned long, ret), 0,
+				 FILTER_OTHER);
 
 	return ret;
 }