diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 06ef1c35a65a5ca4a9fadc56ec6e3d26a9f1e9c9..34dd749dc390b14449ab03a914e42da3ae239651 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1125,47 +1125,47 @@ static struct thread *perf_session__register_idle_thread(struct perf_session *se
 	return thread;
 }
 
-static void perf_session__warn_about_errors(const struct perf_session *session,
-					    const struct perf_tool *tool)
+static void perf_tool__warn_about_errors(const struct perf_tool *tool,
+					 const struct events_stats *stats)
 {
 	if (tool->lost == perf_event__process_lost &&
-	    session->evlist->stats.nr_events[PERF_RECORD_LOST] != 0) {
+	    stats->nr_events[PERF_RECORD_LOST] != 0) {
 		ui__warning("Processed %d events and lost %d chunks!\n\n"
 			    "Check IO/CPU overload!\n\n",
-			    session->evlist->stats.nr_events[0],
-			    session->evlist->stats.nr_events[PERF_RECORD_LOST]);
+			    stats->nr_events[0],
+			    stats->nr_events[PERF_RECORD_LOST]);
 	}
 
-	if (session->evlist->stats.nr_unknown_events != 0) {
+	if (stats->nr_unknown_events != 0) {
 		ui__warning("Found %u unknown events!\n\n"
 			    "Is this an older tool processing a perf.data "
 			    "file generated by a more recent tool?\n\n"
 			    "If that is not the case, consider "
 			    "reporting to linux-kernel@vger.kernel.org.\n\n",
-			    session->evlist->stats.nr_unknown_events);
+			    stats->nr_unknown_events);
 	}
 
-	if (session->evlist->stats.nr_unknown_id != 0) {
+	if (stats->nr_unknown_id != 0) {
 		ui__warning("%u samples with id not present in the header\n",
-			    session->evlist->stats.nr_unknown_id);
+			    stats->nr_unknown_id);
 	}
 
-	if (session->evlist->stats.nr_invalid_chains != 0) {
+	if (stats->nr_invalid_chains != 0) {
 		ui__warning("Found invalid callchains!\n\n"
 			    "%u out of %u events were discarded for this reason.\n\n"
 			    "Consider reporting to linux-kernel@vger.kernel.org.\n\n",
-			    session->evlist->stats.nr_invalid_chains,
-			    session->evlist->stats.nr_events[PERF_RECORD_SAMPLE]);
+			    stats->nr_invalid_chains,
+			    stats->nr_events[PERF_RECORD_SAMPLE]);
 	}
 
-	if (session->evlist->stats.nr_unprocessable_samples != 0) {
+	if (stats->nr_unprocessable_samples != 0) {
 		ui__warning("%u unprocessable samples recorded.\n"
 			    "Do you have a KVM guest running and not using 'perf kvm'?\n",
-			    session->evlist->stats.nr_unprocessable_samples);
+			    stats->nr_unprocessable_samples);
 	}
 
-	if (session->evlist->stats.nr_unordered_events != 0)
-		ui__warning("%u out of order events recorded.\n", session->evlist->stats.nr_unordered_events);
+	if (stats->nr_unordered_events != 0)
+		ui__warning("%u out of order events recorded.\n", stats->nr_unordered_events);
 }
 
 volatile int session_done;
@@ -1255,7 +1255,7 @@ static int __perf_session__process_pipe_events(struct perf_session *session,
 	err = ordered_events__flush(session, tool, OE_FLUSH__FINAL);
 out_err:
 	free(buf);
-	perf_session__warn_about_errors(session, tool);
+	perf_tool__warn_about_errors(tool, &session->evlist->stats);
 	ordered_events__free(&session->ordered_events);
 	return err;
 }
@@ -1400,7 +1400,7 @@ static int __perf_session__process_events(struct perf_session *session,
 	err = ordered_events__flush(session, tool, OE_FLUSH__FINAL);
 out_err:
 	ui_progress__finish();
-	perf_session__warn_about_errors(session, tool);
+	perf_tool__warn_about_errors(tool, &session->evlist->stats);
 	ordered_events__free(&session->ordered_events);
 	session->one_mmap = false;
 	return err;