From 2a38f96b98aac6755e6f49914ac58d26c826f040 Mon Sep 17 00:00:00 2001
From: zhangxinyu <840317537@qq.com>
Date: Wed, 24 May 2023 09:33:53 +0800
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This reverts commit 9b6bfc7c870e3c27af4ed3b0875ca78fdcb56329.
---
 ch3-coop/user/src/bin/00write_a.rs | 2 +-
 ch3-coop/user/src/bin/01write_b.rs | 2 +-
 ch3-coop/user/src/bin/02write_c.rs | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ch3-coop/user/src/bin/00write_a.rs b/ch3-coop/user/src/bin/00write_a.rs
index 3303899..67088ed 100644
--- a/ch3-coop/user/src/bin/00write_a.rs
+++ b/ch3-coop/user/src/bin/00write_a.rs
@@ -13,7 +13,7 @@ fn main() -> i32 {
             print!("A");
         }
         println!(" [{}/{}]", i + 1, HEIGHT);
-        sys_yield();
+        // sys_yield();
     }
     println!("Test write_a OK!");
     0
diff --git a/ch3-coop/user/src/bin/01write_b.rs b/ch3-coop/user/src/bin/01write_b.rs
index 64bd665..1ae798f 100644
--- a/ch3-coop/user/src/bin/01write_b.rs
+++ b/ch3-coop/user/src/bin/01write_b.rs
@@ -13,7 +13,7 @@ fn main() -> i32 {
             print!("B");
         }
         println!(" [{}/{}]", i + 1, HEIGHT);
-        sys_yield();
+        // sys_yield();
     }
     println!("Test write_b OK!");
     0
diff --git a/ch3-coop/user/src/bin/02write_c.rs b/ch3-coop/user/src/bin/02write_c.rs
index 25464bf..f9c8f71 100644
--- a/ch3-coop/user/src/bin/02write_c.rs
+++ b/ch3-coop/user/src/bin/02write_c.rs
@@ -13,7 +13,7 @@ fn main() -> i32 {
             print!("C");
         }
         println!(" [{}/{}]", i + 1, HEIGHT);
-        sys_yield();
+        // sys_yield();
     }
     println!("Test write_c OK!");
     0