perf annotate-data: Add member field in the data type

Add child member field if the current type is a composite type like a
struct or union.  The member fields are linked in the children list and
do the same recursively if the child itself is a composite type.

Add 'self' member to the annotated_data_type to handle the members in
the same way.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: linux-toolchains@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Link: https://lore.kernel.org/r/20231213001323.718046-11-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 23 insertions, 4 deletions

diff --git a/tools/perf/util/annotate-data.h b/tools/perf/util/annotate-data.h
index 6efdd7e21b28..33748222e6aa 100644
--- a/tools/perf/util/annotate-data.h
+++ b/tools/perf/util/annotate-data.h
@@ -10,16 +10,35 @@
 struct map_symbol;
 
 /**
+ * struct annotated_member - Type of member field
+ * @node: List entry in the parent list
+ * @children: List head for child nodes
+ * @type_name: Name of the member type
+ * @var_name: Name of the member variable
+ * @offset: Offset from the outer data type
+ * @size: Size of the member field
+ *
+ * This represents a member type in a data type.
+ */
+struct annotated_member {
+	struct list_head node;
+	struct list_head children;
+	char *type_name;
+	char *var_name;
+	int offset;
+	int size;
+};
+
+/**
  * struct annotated_data_type - Data type to profile
- * @type_name: Name of the data type
- * @type_size: Size of the data type
+ * @node: RB-tree node for dso->type_tree
+ * @self: Actual type information
  *
  * This represents a data type accessed by samples in the profile data.
  */
 struct annotated_data_type {
 	struct rb_node node;
-	char *type_name;
-	int type_size;
+	struct annotated_member self;
 };
 
 extern struct annotated_data_type unknown_type;