v4.19.13 snapshot.
diff --git a/tools/perf/util/dump-insn.c b/tools/perf/util/dump-insn.c
new file mode 100644
index 0000000..10988d3
--- /dev/null
+++ b/tools/perf/util/dump-insn.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/compiler.h>
+#include "dump-insn.h"
+
+/* Fallback code */
+
+__weak
+const char *dump_insn(struct perf_insn *x __maybe_unused,
+ u64 ip __maybe_unused, u8 *inbuf __maybe_unused,
+ int inlen __maybe_unused, int *lenp)
+{
+ if (lenp)
+ *lenp = 0;
+ return "?";
+}