Commit 29be60c9 authored by Ian Rogers's avatar Ian Rogers Committed by Namhyung Kim
Browse files

perf build-id: Mark DSO in sample callchains 



Previously only the sample IP's map DSO would be marked hit for the
purposes of populating the build ID cache. Walk the call chain to mark
all IPs and DSOs.

Signed-off-by: default avatarIan Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250724163302.596743-5-irogers@google.com


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent fccaaf6f

tools/perf/util/build-id.c

+16 −1
Original line number Diff line number Diff line
@@ -42,10 +42,20 @@ 


static bool no_buildid_cache;



static int mark_dso_hit_callback(struct callchain_cursor_node *node, void *data __maybe_unused)

{

	struct map *map = node->ms.map;



	if (map)

		dso__set_hit(map__dso(map));



	return 0;

}



int build_id__mark_dso_hit(const struct perf_tool *tool __maybe_unused,

			   union perf_event *event,

			   struct perf_sample *sample,

			   struct evsel *evsel __maybe_unused,

			   struct evsel *evsel,

			   struct machine *machine)

{

	struct addr_location al;
@@ -63,6 +73,11 @@ int build_id__mark_dso_hit(const struct perf_tool *tool __maybe_unused, 
		dso__set_hit(map__dso(al.map));



	addr_location__exit(&al);



	sample__for_each_callchain_node(thread, evsel, sample, PERF_MAX_STACK_DEPTH,

					/*symbols=*/false, mark_dso_hit_callback, /*data=*/NULL);





	thread__put(thread);

	return 0;

}