Commit c4f46223 authored by Leo Yan's avatar Leo Yan Committed by Arnaldo Carvalho de Melo
Browse files

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: default avatarLeo Yan <leo.yan@linaro.org>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Al Grant <al.grant@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Eelco Chaudron <echaudro@redhat.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Cc: Tanmay Jagdale <tanmay@marvell.com>
Cc: coresight@lists.linaro.org
Cc: zengshun . wu <zengshun.wu@outlook.com>
Link: https://lore.kernel.org/r/20220521130446.4163597-2-leo.yan@linaro.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent f4df0dbb

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

+17 −4
Original line number Diff line number Diff line
@@ -755,12 +755,22 @@ static void set_regs_in_dict(PyObject *dict, 
}



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,
@@ -840,7 +850,8 @@ static PyObject *get_perf_sample_dict(struct perf_sample *sample, 
			(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);
@@ -856,7 +867,9 @@ static PyObject *get_perf_sample_dict(struct perf_sample *sample, 
	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)