From 13b38815c2e6df6d7d16cb024f3fedad1b2a4967 Mon Sep 17 00:00:00 2001
From: zgfzgf <1901989065@qq.com>
Date: Fri, 25 Sep 2020 20:31:07 +0800
Subject: [PATCH] add trace wdpost

---
 storage/wdpost_sched.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/storage/wdpost_sched.go b/storage/wdpost_sched.go
index 7e60fd9eebd..9477e0306c1 100644
--- a/storage/wdpost_sched.go
+++ b/storage/wdpost_sched.go
@@ -125,10 +125,13 @@ func (s *WindowPoStScheduler) Run(ctx context.Context) {
 					continue
 				}
 
+				ctx, span := trace.StartSpan(ctx, "WindowPoStScheduler.headChange")
+
 				if err := s.update(ctx, chg.Val); err != nil {
 					log.Errorf("%+v", err)
 				}
 
+				span.End()
 				gotCur = true
 				continue
 			}