description: openanolis

study/kernel/00-DESCRIPTION/DEBUGGING.md

@@ -159,6 +159,14 @@ Date:   Tue Feb 21 16:09:33 2017 +0100
 | 2009/08/05 | Arjan van de Ven <arjan@infradead.org> | [Implement crashkernel=auto](https://lore.kernel.org/patchwork/cover/166256) | 实现 crashkernel=auto . | v1  ☐ | [PatchWork](https://lore.kernel.org/patchwork/cover/166256) |
 
 
+# 5 REFCOUNT
+-------
+
+
+| 时间  | 作者 | 特性 | 描述 | 是否合入主线 | 链接 |
+|:----:|:----:|:---:|:----:|:---------:|:----:|
+| 2019/11/21 | Will Deacon <will@kernel.org> | [Rework REFCOUNT_FULL using atomic_fetch_* operations](https://lore.kernel.org/patchwork/cover/1156945) | 通过 atomic_fetch_* 操作来降低 cmpxchg() 带来的性能开销, 从而提升 refcount 机制的性能. | v4 ☑ [5.5-rc1]() | [PatchWork](https://lore.kernel.org/patchwork/cover/1156945) |
+
 <br>
 
 *   本作品/博文 ( [AderStep-紫夜阑珊-青伶巷草 Copyright ©2013-2017](http://blog.csdn.net/gatieme) ), 由 [成坚(gatieme)](http://blog.csdn.net/gatieme) 创作.

study/kernel/00-DESCRIPTION/MEMORY_MANAGER.md

@@ -233,7 +233,7 @@ Linux 为每个 zone 都设置了独立的 min, low 和 high 三个档位的 wat
 
 | 时间  | 作者 | 特性 | 描述 | 是否合入主线 | 链接 |
 |:----:|:----:|:---:|:----:|:---------:|:----:|
-| 2018/11/23 | Mel Gorman | [Fragmentation avoidance improvements v5](https://lore.kernel.org/patchwork/cover/1016503) | 优化调度器的路径, 减少对 rq->lock 的争抢, 实现 lockless. | v5 ☑ 5.0-rc1 | [PatchWork v6](https://lore.kernel.org/patchwork/cover/1016503) |
+| 2018/11/23 | Mel Gorman | [Fragmentation avoidance improvements v5](https://lore.kernel.org/patchwork/cover/1016503) | 伙伴系统页面分配时的反碎片化 | v5 ☑ 5.0-rc1 | [PatchWork v5](https://lore.kernel.org/patchwork/cover/1016503) |
 | 2020/02/25 | Mel Gorman | [Limit runaway reclaim due to watermark boosting](https://lore.kernel.org/patchwork/cover/1200172) | 优化调度器的路径, 减少对 rq->lock 的争抢, 实现 lockless. | v4 ☑ 4.4-rc1 | [PatchWork v6](https://lore.kernel.org/patchwork/cover/1200172) |
 
 ### 2.1.1.4 PCP(Per CPU Page) Allocation