From 60bc7f8e15bca54f600d45e3a5949a3dfd7196ec Mon Sep 17 00:00:00 2001
From: Xebin <Xebin@users.noreply.github.com>
Date: Fri, 8 Apr 2016 10:42:18 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0linux=E5=86=85=E6=A0=B8?=
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用户态与内核态
---
 Readme.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Readme.md b/Readme.md
index 7b2810a..11652b3 100644
--- a/Readme.md
+++ b/Readme.md
@@ -110,7 +110,8 @@
     - [19 求两棵树是否相同](#19-求两棵树是否相同)
     - [20 前序中序求后序](#20-前序中序求后序)
     - [21 单链表逆置](#21-单链表逆置)
-
+- [linux系统](#linux系统)
+    - [内核态和用户态](#内核态和用户态)
 <!-- markdown-toc end -->
 
 # Python语言特性
@@ -1367,3 +1368,6 @@ while root:
     print root.data
     root = root.next
 ```
+# linux系统
+## 用户态和内核态
+        参考：http://blog.csdn.net/xifeijian/article/details/9080895