diff --git a/SUMMARY.md b/SUMMARY.md
index c09f05e..b8883b0 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -27,28 +27,48 @@
    * [Handling Non-Maskable interrupts](interrupts/interrupts-6.md)
    * [Dive into external hardware interrupts](interrupts/interrupts-7.md)
    * [Initialization of external hardware interrupts structures](interrupts/interrupts-8.md)
+   * [Softirq, Tasklets and Workqueues](interrupts/interrupts-9.md)
+   * [Last part](interrupts/interrupts-10.md)
+* [System calls](SysCall/README.md)
+    * [Introduction to system calls](SysCall/syscall-1.md)
+    * [How the Linux kernel handles a system call](SysCall/syscall-2.md)
+    * [vsyscall and vDSO](SysCall/syscall-3.md)
+    * [How the Linux kernel runs a program](SysCall/syscall-4.md)
+* [Timers and time management](Timers/README.md)
+    * [Introduction](Timers/timers-1.md)
+    * [Clocksource framework](Timers/timers-2.md)
+    * [The tick broadcast framework and dyntick](Timers/timers-3.md)
+    * [Introduction to timers](Timers/timers-4.md)
+    * [Clockevents framework](Timers/timers-5.md)
+    * [x86 related clock sources](Timers/timers-6.md)
+    * [Time related system calls](Timers/timers-7.md)
+* [Synchronization primitives](SyncPrim/README.md)
+    * [Introduction to spinlocks](SyncPrim/sync-1.md)
 * [Memory management](mm/README.md)
    * [Memblock](mm/linux-mm-1.md)
    * [Fixmaps and ioremap](mm/linux-mm-2.md)
-* vsyscalls and vdso
-* SMP
+* [SMP]()
 * [Concepts](Concepts/README.md)
    * [Per-CPU variables](Concepts/per-cpu.md)
    * [Cpumasks](Concepts/cpumask.md)
+   * [The initcall mechanism](Concepts/initcall.md)
 * [Data Structures in the Linux Kernel](DataStructures/README.md)
    * [Doubly linked list](DataStructures/dlist.md)
    * [Radix tree](DataStructures/radix-tree.md)
+   * [Bit arrays](DataStructures/bitmap.md)
 * [理论](Theory/README.md)
    * [分页](Theory/Paging.md)
    * [Elf64 格式](Theory/ELF.md)
-   * CPUID
-   * MSR
+   * [CPUID]()
+   * [MSR]()
 * Initial ram disk
-   * initrd
+   * [initrd]()
 * [Misc](Misc/README.md)
-   * How kernel compiled
-   * Write and Submit your first Linux kernel Patch
-   * Data types in the kernel
+    * [How the kernel is compiled](Misc/how_kernel_compiled.md)
+    * [Linkers](Misc/linkers.md)
+    * [Linux kernel development](Misc/contribute.md)
+    * [Write and Submit your first Linux kernel Patch]()
+    * [Data types in the kernel]()
 * [Useful links](LINKS.md)
 * [Contributors](contributors.md)