From cd7e2cf0e96d653a05591e4fec690c1cc8fdcfa0 Mon Sep 17 00:00:00 2001
From: 0xAX <0xAX@users.noreply.github.com>
Date: Sun, 24 Apr 2016 20:11:11 +0600
Subject: [PATCH] Update SUMMARY.md

---
 SUMMARY.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/SUMMARY.md b/SUMMARY.md
index 924c47f..dc3be95 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -44,6 +44,7 @@
 * [Synchronization primitives](SyncPrim/README.md)
     * [Introduction to spinlocks](SyncPrim/sync-1.md)
     * [Queued spinlocks](SyncPrim/sync-2.md)
+    * [Semaphores](SyncPrim/sync-3.md)
 * [Memory management](mm/README.md)
     * [Memblock](mm/linux-mm-1.md)
     * [Fixmaps and ioremap](mm/linux-mm-2.md)