perf scripting python: Expose dso and map information

This change adds dso build_id and corresponding map's start and end
address. The info of dso build_id can be used to find dso file path,
and we can validate if a branch address falls into the range of map's
start and end addresses.

In addition, the map's start address can be used as an offset for
disassembly.

Signed-off-by: Leo Yan <[e-mail]>
Acked-by: Adrian Hunter <[e-mail]>
Cc: Al Grant <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Eelco Chaudron <[e-mail]>
Cc: German Gomez <[e-mail]>
Cc: Ian Rogers <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: James Clark <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Stephen Brennan <[e-mail]>
Cc: Tanmay Jagdale <[e-mail]>
Cc: [e-mail]
Cc: zengshun . wu <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/scripting-engines/trace-event-python.c

···
 }
 
 static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
-			    const char *dso_field, const char *sym_field,
-			    const char *symoff_field)
+			    const char *dso_field, const char *dso_bid_field,
+			    const char *dso_map_start, const char *dso_map_end,
+			    const char *sym_field, const char *symoff_field)
 {
+	char sbuild_id[SBUILD_ID_SIZE];
+
 	if (al->map) {
 		pydict_set_item_string_decref(dict, dso_field,
 			_PyUnicode_FromString(al->map->dso->name));
+		build_id__sprintf(&al->map->dso->bid, sbuild_id);
+		pydict_set_item_string_decref(dict, dso_bid_field,
+			_PyUnicode_FromString(sbuild_id));
+		pydict_set_item_string_decref(dict, dso_map_start,
+			PyLong_FromUnsignedLong(al->map->start));
+		pydict_set_item_string_decref(dict, dso_map_end,
+			PyLong_FromUnsignedLong(al->map->end));
 	}
 	if (al->sym) {
 		pydict_set_item_string_decref(dict, sym_field,
···
 			(const char *)sample->raw_data, sample->raw_size));
 	pydict_set_item_string_decref(dict, "comm",
 			_PyUnicode_FromString(thread__comm_str(al->thread)));
-	set_sym_in_dict(dict, al, "dso", "symbol", "symoff");
+	set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
+			"symbol", "symoff");
 
 	pydict_set_item_string_decref(dict, "callchain", callchain);
 
···
 	if (addr_al) {
 		pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
 			PyBool_FromLong(1));
-		set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_symbol", "addr_symoff");
+		set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
+				"addr_dso_map_start", "addr_dso_map_end",
+				"addr_symbol", "addr_symoff");
 	}
 
 	if (sample->flags)