From 9831b9e7e9ce4ffe582cd4d2aff6d59e07c122e9 Mon Sep 17 00:00:00 2001
From: Yifan Wu <shinbokuow@163.com>
Date: Wed, 29 Mar 2023 21:04:20 +0800
Subject: [PATCH] fix ch6

---
 os/src/task/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/os/src/task/mod.rs b/os/src/task/mod.rs
index 00a056d..e4837cb 100644
--- a/os/src/task/mod.rs
+++ b/os/src/task/mod.rs
@@ -24,6 +24,7 @@ mod switch;
 mod task;
 
 use crate::fs::{open_file, OpenFlags};
+use crate::sbi::shutdown;
 use alloc::sync::Arc;
 pub use context::TaskContext;
 use lazy_static::*;