1 files changed, 35 insertions, 0 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 6d075648d2cc..0c7564747a14 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -1797,3 +1797,38 @@ s64 callchain_avg_cycles(struct callchain_node *cnode)
 
 	return cycles;
 }
+
+int sample__for_each_callchain_node(struct thread *thread, struct evsel *evsel,
+				    struct perf_sample *sample, int max_stack,
+				    bool symbols, callchain_iter_fn cb, void *data)
+{
+	struct callchain_cursor *cursor = get_tls_callchain_cursor();
+	int ret;
+
+	if (!cursor)
+		return -ENOMEM;
+
+	/* Fill in the callchain. */
+	ret = __thread__resolve_callchain(thread, cursor, evsel, sample,
+					  /*parent=*/NULL, /*root_al=*/NULL,
+					  max_stack, symbols);
+	if (ret)
+		return ret;
+
+	/* Switch from writing the callchain to reading it. */
+	callchain_cursor_commit(cursor);
+
+	while (1) {
+		struct callchain_cursor_node *node = callchain_cursor_current(cursor);
+
+		if (!node)
+			break;
+
+		ret = cb(node, data);
+		if (ret)
+			return ret;
+
+		callchain_cursor_advance(cursor);
+	}
+	return 0;
+}