From 81d2981d47a7a28f136959e71dfd17c11a91a79e Mon Sep 17 00:00:00 2001
From: Rickard Green <rickard@erlang.org>
Date: Tue, 10 Apr 2018 15:06:32 +0200
Subject: Teach erlang:monotonic_time/1 the perf_counter time unit

---
 erts/emulator/beam/erl_time_sup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/erts/emulator/beam/erl_time_sup.c b/erts/emulator/beam/erl_time_sup.c
index 9e37106b88..b9d19eb7d0 100644
--- a/erts/emulator/beam/erl_time_sup.c
+++ b/erts/emulator/beam/erl_time_sup.c
@@ -2155,6 +2155,8 @@ time_unit_conversion(Process *c_p, Eterm term, ErtsMonotonicTime val, ErtsMonoto
 	ERTS_BIF_PREP_RET(ret, make_time_val(c_p, result));
 	break;
 #endif
+    case am_perf_counter:
+	goto trap_to_erlang_code;
     default: {
 	Eterm value, native_res;
 #ifndef ARCH_64
-- 
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