From 5b2a89e174a4af15c1cfa97dd883d0ff5e8794b1 Mon Sep 17 00:00:00 2001
From: hujun5 <hujun5@xiaomi.com>
Date: Tue, 18 Apr 2023 10:28:16 +0800
Subject: [PATCH] ostest:  fix smp ostest fail

In SMP we need improve thread waiting strategy

Signed-off-by: hujun5 <hujun5@xiaomi.com>
---
 testing/ostest/robust.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/testing/ostest/robust.c b/testing/ostest/robust.c
index f2ed48569..9217a279f 100644
--- a/testing/ostest/robust.c
+++ b/testing/ostest/robust.c
@@ -202,6 +202,14 @@ void robust_test(void)
       nerrors++;
     }
 
+  /* Make sure waiter exit completely */
+
+  do
+    {
+      sleep(1);
+    }
+  while (kill(g_robust_mutex.pid, 0) == 0 || errno != ESRCH);
+
   /* Make the mutex consistent and try again.  It should succeed this time. */
 
   printf("robust_test: Make the mutex consistent again.\n");