tracing: show details of structures within the ftrace structures

Some of the internal ftrace structures use structures within. The
output of a field saying it is just a structure is useless for a format
file. A binary reader of the ring buffer needs to know more about
how the fields are broken up.

This patch adds to the ftrace structure macros new fields to
describe the structures inside a structure.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index d308195d40aa..b0d287d49a6d 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -53,9 +53,18 @@ extern struct tracer boot_tracer;
 #undef __field
 #define __field(type, item)             type    item;
 
+#undef __field_struct
+#define __field_struct(type, item)      __field(type, item)
+
+#undef __field_desc
+#define __field_desc(type, container, item)
+
 #undef __array
 #define __array(type, item, size)       type    item[size];
 
+#undef __array_desc
+#define __array_desc(type, container, item, size)
+
 #undef __dynamic_array
 #define __dynamic_array(type, item)     type    item[];