From 7a0aa25e555edd901add25a1101e7b145d1f3bd8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E5=BF=97=E5=BC=BA?= <shore.cloud@gmail.com>
Date: Wed, 11 Dec 2019 13:33:44 +0800
Subject: [PATCH] call osyield directly

---
 src/runtime/proc.go | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/runtime/proc.go b/src/runtime/proc.go
index d264e1d1208d4d..7db764beb896b3 100644
--- a/src/runtime/proc.go
+++ b/src/runtime/proc.go
@@ -1678,8 +1678,7 @@ func lockextra(nilokay bool) *m {
 	for {
 		old := atomic.Loaduintptr(&extram)
 		if old == locked {
-			yield := osyield
-			yield()
+			osyield()
 			continue
 		}
 		if old == 0 && !nilokay {
@@ -1696,8 +1695,7 @@ func lockextra(nilokay bool) *m {
 		if atomic.Casuintptr(&extram, old, locked) {
 			return (*m)(unsafe.Pointer(old))
 		}
-		yield := osyield
-		yield()
+		osyield()
 		continue
 	}
 }