diff --git a/study/kernel/01-process/05-schedule/README.md b/study/kernel/01-process/05-schedule/README.md
index 7f2b72c..1dfa07b 100644
--- a/study/kernel/01-process/05-schedule/README.md
+++ b/study/kernel/01-process/05-schedule/README.md
@@ -11,4 +11,6 @@ Linux进程退出详解
 3.	O(N)调度器
 4.	O(1)调度器
 5.	CFS
-6.	内核抢占
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+6.	内核抢占
+
+http://blog.csdn.net/li4850729/article/details/28136643
\ No newline at end of file