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description/memory: use pmem as numa node
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gatieme
@@ -351,11 +351,11 @@ TLB entry shootdown 常常或多或少的带来一些性能问题.
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## 2.7 Linux to Apple Silicon Macs
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-------
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目前有两个团队在做这块工作
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2020 年 11 月 11 日在苹果新品发布会上发布了适用于部分Mac、iPad设备 ARM64 芯片 Apple M1, 社区开始有不少团队开始着手于 Linux 支持 Apple M1 芯片. 目前有两个团队在做这块工作 Corellium 的 [corellium/linux-m1](https://github.com/corellium/linux-m1) 以及 [AsahiLinux/linux](https://github.com/AsahiLinux/linux). 其中
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[corellium/linux-m1](https://github.com/corellium/linux-m1)
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* [Corellium](https://github.com/corellium) 一直致力于为用户提供虚拟 iOS 系统桌面解决方案, 这个团队从 A10 芯片开始就开始做 Linux 的适配, 因此 M1 刚出来就做了快速的适配.
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[AsahiLinux/linux](https://github.com/AsahiLinux/linux)
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* [AsahiLinux]() 国外一名资深操作系统移植专家 Hector Martin(网名为 Marcan) 主导发起的一个开源项目, 其目标是让用户可以在 Apple M1 上把基于 Linux 的发行版作为日常操作系统来使用.
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# 3 RISC-V
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-------
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@@ -257,7 +257,7 @@ PV_SPINLOCKS 的合入引起了[性能问题 Performance overhead of paravirt_op
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| 2018/01/29 | Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> | [membarrier: Provide core serializing command](https://lore.kernel.org/patchwork/cover/843003) | 引入 MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED. | v6 ☑ 4.16-rc1 | [PatchWork v5](https://lore.kernel.org/patchwork/cover/835747)<br>*-*-*-*-*-*-*-* <br>[PatchWork v6](https://lore.kernel.org/patchwork/cover/398912) |
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5 RC]()
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# 5 RCU()
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-------
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[What is RCU, Fundamentally?](https://lwn.net/Articles/262464)
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@@ -275,6 +275,19 @@ PV_SPINLOCKS 的合入引起了[性能问题 Performance overhead of paravirt_op
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[FUTEX2's sys_futex_waitv() Sent In For Linux 5.16 To Help Linux Gaming](https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.16-sys_futex_waitv)
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# 7 Semaphores
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-------
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[The Little Book of Semaphores](https://www.greenteapress.com/semaphores/LittleBookOfSemaphores.pdf)
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# 8 LockLess
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-------
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[An introduction to lockless algorithms](https://lwn.net/Articles/844224)
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<br>
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* 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.
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File diff suppressed because one or more lines are too long
@@ -73,8 +73,8 @@
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| tag | LWN | 泰晓资讯 | phoronix |
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|:-----:|:-----:|:-------:|:--------:|
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| [5.14](https://lwn.net/Articles/867540) | [2021/07/12 rc1](https://lwn.net/Articles/861695)<br>*-*-*-*-*-*-*-* <br>[2021/07/12 5.14 conclusion](https://lwn.net/Articles/861695) | [8月 / 第一期 / 2021](http://tinylab.org/tinylab-weekly-8-1st-2021)<br>*-*-*-*-*-*-*-* <br>[8月 / 第二期 / 2021](http://tinylab.org/tinylab-weekly-8-2nd-2021/)<br>*-*-*-*-*-*-*-* <br>[2021 年 9 月 第 一 期](http://tinylab.org/tinylab-weekly-9-1st-2021) |
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| [5.15](https://lwn.net/Articles/874283) | [2021/09/02 5.15 Merge window, part 1](https://lwn.net/Articles/867821)<br>*-*-*-*-*-*-*-* <br>[2021/09/13 The rest of the 5.15 merge window](https://lwn.net/Articles/868221) | [2021/07/12 rc1](https://lwn.net/Articles/861695) | [9月 / 第二期 / 2021](http://tinylab.org/tinylab-weekly-9-2nd-2021) | [Linux 5.15 Delivers Many Features](https://www.phoronix.com/scan.php?page=article&item=linux-515-features&num=1) |
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| [5.16](https://lwn.net/Articles/874283) | [2021/09/02 5.15 Merge window, part 1](https://lwn.net/Articles/867821)<br>*-*-*-*-*-*-*-* <br>[2021/09/13 The rest of the 5.15 merge window](https://lwn.net/Articles/868221) | [2021/07/12 rc1](https://lwn.net/Articles/861695) | [9月 / 第二期 / 2021](http://tinylab.org/tinylab-weekly-9-2nd-2021) | [Linux 5.16-rc1 ](https://www.phoronix.com/scan.php?page=article&item=linux-516-features&num=1) |
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| [5.15](https://lwn.net/Articles/874283) | [2021/09/02 5.15 Merge window, part 1](https://lwn.net/Articles/867821)<br>*-*-*-*-*-*-*-* <br>[2021/09/13 The rest of the 5.15 merge window](https://lwn.net/Articles/868221) | [9月 / 第二期 / 2021](http://tinylab.org/tinylab-weekly-9-2nd-2021) | [Linux 5.15 Delivers Many Features](https://www.phoronix.com/scan.php?page=article&item=linux-515-features&num=1) |
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| [5.16](https://lwn.net/Articles/874283) | [2021/11/04 5.16 Merge window, part 1](https://lwn.net/Articles/875135)<br>*-*-*-*-*-*-*-* <br>[2021/11/15 5.16 Merge window, part 2](https://lwn.net/Articles/868221) | [2021/07/12 rc1](https://lwn.net/Articles/875135) | [9月 / 第二期 / 2021](http://tinylab.org/tinylab-weekly-9-2nd-2021) | [Linux 5.16-rc1 ](https://www.phoronix.com/scan.php?page=article&item=linux-516-features&num=1) |
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# 5 业界会议
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@@ -88,3 +88,12 @@
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| 2021/09 | [Watch Live (Free)](https://www.linuxplumbersconf.org/event/11/page/107-watch-live-free) |
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# 6 统计信息
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-------
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| 网站 | 描述 |
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| [LWN](https://lwn.net/Kernel/Index/#Releases) | LWN 每个版本都会在合并窗口发布 Merge Window, 在版本发布之后还会发布 [development statistics](https://lwn.net/Articles/867540) 信息. |
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@@ -58,6 +58,11 @@ Mainline Merge Window
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| 5.15 | 2021/11/1 | NA | [Merge tag 'sched-core-2021-08-30'](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5d3c0db4598c5de511824649df2aa976259cf10a)<br>[Merge remote-tracking branch 'tip/sched/arm64'](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=65266a7c6abf)<br>[Merge tag 'sched_urgent_for_v5.15_rc1'](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=56c244382fdb)<br>[Merge tag 'sched_urgent_for_v5.15_rc4'](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=777feabaea77)<br>[Merge tag 'sched_urgent_for_v5.15_rc7'](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6c62666d8879)
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| 5.16 | NA | [Merge tag 'sched-core-2021-11-01', 5.16-rc1](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9a7e0a90a454a7826ecbca055a6ec9271b70c686)<br>[Merge tag 'sched_urgent_for_v5.16_rc1', 5.16-rc3](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fc661f2dcb7e)<br>[Merge tag 'sched-urgent-2021-11-28', 5.16-rc3](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=97891bbf38f7)<br>[Merge tag 'sched_urgent_for_v5.16_rc4', 5.16-rc4](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d213767dc6f) |
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cgit 上查看 sched 所有的 log 信息 :
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[GIT LOG: linux/kernel/sched](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/kernel/sched)
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## 0.3 社区会议
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-------
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@@ -1779,7 +1784,7 @@ PREEMPT-RT PATCH 的核心思想是最小化内核中不可抢占部分的代码
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| 时间 | 作者 | 特性 | 描述 | 是否合入主线 | 链接 |
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|:----:|:----:|:---:|:----:|:---------:|:----:|
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| 2020/08/03 | Peter Oskolkov <posk@google.com>/<posk@posk.io> | [FUTEX_SWAP](https://lore.kernel.org/patchwork/cover/1433967) | 通过对 futex 的魔改, 使得在用户态使用 switch_to() 指定任务切换的能力. 这就是用户模式线程的用途: 极低的切换开销, 意味着我们操作系统可以支持的数以千计的线程可以提高到 10 倍以上甚至百万级别. | [2020/06/15 PatchWork RFC,0/3](https://lore.kernel.org/patchwork/cover/1256264)<br>*-*-*-*-*-*-*-* <br>[2020/06/16 PatchWork RFC,0/3,v2](https://lore.kernel.org/patchwork/cover/1257233)<br>*-*-*-*-*-*-*-* <br>[2021/07/16 PatchWork RFC,0/3,v3](https://lore.kernel.org/patchwork/cover/1263506)<br>*-*-*-*-*-*-*-* <br>[2020/08/03 PatchWork for,5.9,v2,0/4](https://lore.kernel.org/patchwork/cover/1283798) |
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| 2021/11/23 | Peter Oskolkov <posk@google.com>/<posk@posk.io> | [sched,mm,x86/uaccess: implement User Managed Concurrency Groups](https://lore.kernel.org/patchwork/cover/1433967) | UMCG (User-Managed Concurrency Groups) | [PatchWork RFC,v0.1,0/9](https://lore.kernel.org/patchwork/cover/1433967)<br>*-*-*-*-*-*-*-* <br>[2021/07/08 PatchWork RFC,0/3,v0.2](https://lore.kernel.org/patchwork/cover/1455166)<br>*-*-*-*-*-*-*-* <br>[2021/07/16 PatchWork RFC,0/4,v0.3](https://lore.kernel.org/patchwork/cover/1461708)<br>*-*-*-*-*-*-*-* <br>[2021/08/01 PatchWork 0/4,v0.4](https://lore.kernel.org/patchwork/cover/1470650)<br>*-*-*-*-*-*-*-* <br>[2021/08/01 LWN 0/4,v0.5](https://lore.kernel.org/patchwork/cover/1470650)<br>*-*-*-*-*-*-*-* <br>[2021/10/12 PatchWork v0.7,0/5](https://patchwork.kernel.org/project/linux-mm/cover/20211012232522.714898-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/11/04 PatchWork v0.8,0/6](https://patchwork.kernel.org/project/linux-mm/cover/20211104195804.83240-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/11/21 PatchWork v0.9,0/6](https://patchwork.kernel.org/project/linux-mm/cover/20211121212040.8649-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/11/23 PatchWork v0.9.1,0/6](https://patchwork.kernel.org/project/linux-mm/cover/20211122211327.5931-1-posk@google.com) |
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| 2021/12/14 | Peter Oskolkov <posk@google.com>/<posk@posk.io> | [sched,mm,x86/uaccess: implement User Managed Concurrency Groups](https://lore.kernel.org/patchwork/cover/1433967) | UMCG (User-Managed Concurrency Groups) | [PatchWork RFC,v0.1,0/9](https://lore.kernel.org/patchwork/cover/1433967)<br>*-*-*-*-*-*-*-* <br>[2021/07/08 PatchWork RFC,0/3,v0.2](https://lore.kernel.org/patchwork/cover/1455166)<br>*-*-*-*-*-*-*-* <br>[2021/07/16 PatchWork RFC,0/4,v0.3](https://lore.kernel.org/patchwork/cover/1461708)<br>*-*-*-*-*-*-*-* <br>[2021/08/01 PatchWork 0/4,v0.4](https://lore.kernel.org/patchwork/cover/1470650)<br>*-*-*-*-*-*-*-* <br>[2021/08/01 LWN 0/4,v0.5](https://lore.kernel.org/patchwork/cover/1470650)<br>*-*-*-*-*-*-*-* <br>[2021/10/12 PatchWork v0.7,0/5](https://patchwork.kernel.org/project/linux-mm/cover/20211012232522.714898-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/11/04 PatchWork v0.8,0/6](https://patchwork.kernel.org/project/linux-mm/cover/20211104195804.83240-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/11/21 PatchWork v0.9,0/6](https://patchwork.kernel.org/project/linux-mm/cover/20211121212040.8649-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/11/23 PatchWork v0.9.1,0/6](https://patchwork.kernel.org/project/linux-mm/cover/20211122211327.5931-1-posk@google.com)<br>*-*-*-*-*-*-*-* <br>[2021/12/14 PatchWork RFC,0/3](https://patchwork.kernel.org/project/linux-mm/cover/20211214204445.665580974@infradead.org) |
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| 2021/09/08 | Peter Oskolkov <posk@google.com>/<posk@posk.io> | [google ghOSt](https://github.com/google/ghost-kernel) | ghOSt 是在 Linux 内核上实现的用户态调度策略的通用代理. ghOSt 框架提供了一个丰富的 API, 该 API 从用户空间接收进程的调度决策, 并将其作为事务执行. 程序员可以使用任何语言或工具来开发策略, 这些策略可以在不重新启动机器的情况下升级. ghOSt 支持一系列调度目标的策略, 从 µs 级延迟到吞吐量, 再到能源效率, 等等, 并且调度操作的开销较低. 许多策略只是几百行代码. 总之, ghOSt 提供了一个性能框架, 用于将线程调度策略委托给用户空间进程, 从而实现策略优化、无中断升级和故障隔离. | [github kernel](https://github.com/google/ghost-kernel)<br>*-*-*-*-*-*-*-* <br>[github userspace](https://github.com/google/ghost-userspace) |
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