diff --git a/plan/README.md b/plan/README.md
index 341876b8a36f2293f2f254b1a7f480f9f6f3fd70..d8d2a5fe95f4a497e5ebfa3f9f230d4e0ec0d363 100644
--- a/plan/README.md
+++ b/plan/README.md
@@ -157,11 +157,12 @@
 
 * Atomics
     * [RISC-V 原子指令与用法介绍](https://tinylab.org/riscv-atomics/), [直播回放](https://www.cctalk.com/v/16489499392383) @pingbo
-
-* [Generic Ticket Spinlock](https://lore.kernel.org/linux-riscv/11364105.8ZH9dyz9j6@diego/T/#t)
+    * [RISC-V vs Aarch 64 atomic PK] @aabb5566
+* [Generic Ticket Spinlock](https://lore.kernel.org/linux-riscv/11364105.8ZH9dyz9j6@diego/T/#t) @aabb5566
+* [Mutex] https://lwn.net/Articles/164802/ @aabb5566
 * [Restartable Sequence (RSEQ)](https://lore.kernel.org/linux-riscv/20220308083253.12285-1-vincent.chen@sifive.com/T/#t)
 * [Qspinlock](https://lore.kernel.org/linux-riscv/CAJF2gTT9YHgTzPaBN4ekYS7UcBOj_9k9xEcrsoXgW6PCZc8x3Q@mail.gmail.com/T/#t)
-
+* [A Memory Model for RISC-V] (https://riscv.org/wp-content/uploads/2018/05/14.25-15.00-RISCVMemoryModelTutorial.pdf) @aabb5566
 ## Multi-core
 
 * SMP support @user_11186799