华为在 Linux Kernel 5.10 中代码贡献排名第一

{"type":"doc","content":[{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"The presence of Huawei at the top of the \"by changesets\" column may be a bit of a surprise, though something similar happened in 5.8. 94 developers working for Huawei who contributed at least one patch to 5.10. Huawei has built up a significant kernel-development operation. Beyond that, these results are mostly as one would expect. "}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"—— 自由软件媒体 LWN.net"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"Linux Kernel 5.10 代码贡献，华为排名第一"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/a2\/a8\/a2dae1355f0ed7373aee0ff418d207a8.jpeg","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在 Linux Kernel 5.10（下文简称“5.10 版本”）版本中，华为提交的补丁数量为1434个，占比8.9%，内核代码贡献排名第一，代码修改41049行，占比5.3%，代码修改行排名第二，自动内核缺陷发现机器人 HULK Robot 在内核 Bug 发现榜单上排名第二，发现了 15% 的内核 Bug。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/18\/bf\/18512a0c7f4331a482f8fa6b22fa60bf.jpeg","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/c4\/71\/c4ff3b49658bcff5978e6f1455f99a71.jpeg","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在 5.10 版本，华为的贡献主要在 ARM64 架构、ACPI、内存管理、文件系统、Media、内核文档以及海思芯片支持等方面。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在 ARM64 架构方面，增强了 ARM64 64K 页下的 RAID5 支持，写性能提升6倍，减少 stripe_head 75% 的内存使用量。支持 per-NUMA  的 CMA，提升性能；"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在ACPI子系统方面，支持异构设备呈现为 NUMA 节点，以及 ACPI DFX 重构准备；内存管理优化了 slub free 的 slowpath，提升性能。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在文件系统上，F2FS 支持基于 Age-Threshold 垃圾回收\/支持扩展的纯内存日志头管理以及 swap 分区加载提速优化，性能提升40倍。Mauro 作为文档和 Media 子系统的 Maintainer，做了大量 Media 以及文档改进工作，为内核文档直接生成 PDF 做了大量准备。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在海思芯片支持方面，新增了鲲鹏处理器以及 Hikey970 多个驱动支持以及驱动增强。"}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"除了特性，华为的工程师针对整个内核贡献了大量质量加固的 bugfix，及代码重构，增强了整个内核的质量。"}]}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","text":"开发者贡献榜单中的新面孔"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"来自华为德国研究所的 Mauro 在 Media，内核文档和 hikey 驱动子系统做了很多的贡献。除了 Mauro 此外，还有 94 个来自华为的开发者给 5.10 版本做贡献。"}]},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/bf\/8c\/bfb9f56952058ab6e0d9dc83b3a8da8c.jpeg","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","text":"在贡献开发者榜前20的榜单中，有三名华为的工程师"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在贡献开发者榜单中，除了一些经常看到的大佬外，还有新面孔。例如来自华为 OS 内核实验室的缪晴朗。"}]},{"type":"image","attrs":{"src":"https:\/\/static001.infoq.cn\/resource\/image\/28\/c6\/2805abd8f787d0646a037f9a7e5d8ec6.jpeg","alt":null,"title":"","style":[{"key":"width","value":"75%"},{"key":"bordertype","value":"none"}],"href":"","fromPaste":false,"pastePass":false}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":"center","origin":null},"content":[{"type":"text","text":"华为 OS 内核实验室工程师缪晴朗"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"“对我自身而言，投入开源是自己的部分工作，亦是兴趣所在。作为从浙大毕业不到两年，投身于内核开发的新人，很荣幸自己登上了 5.10 版本的补丁贡献前 20 的榜单”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"每个人都对自己的代码被合入 Linux Kernel 记忆犹新。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"“我始终记着收到第一封社区回复时的激动，每天早上来公司打开邮箱前的期待，以及更多的每次补丁被接收时的暗喜与被认同感。而与社区的交流也在帮助我持续提升开发能力和对内核的理解。”"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"heading","attrs":{"align":null,"level":2},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"Linux Kernel 的重要性"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"我们所说的 Linux 全称是 GNU\/Linux，这是由自由软件基金会的定义的。Linux 原本指的只有一个 Linux Kernel。从技术上说，Linux 只是一个符合 POSIX 标准的内核。它提供了一套应用程序接口（API），通过接口用户程序能与内核及硬件交互。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"对于开发者来说，Linux Kernel 中包含最底层的操作系统逻辑，同时 Linux Kernel 作为硬件和软件的通道，一些硬件功能必须要在 Kernel 层面做支持，硬件才能正常的运行，要发挥出硬件的极致性能，还要在Kernel层面的软件上做调优。所以掌握 Linux Kernel 的代码，，其重要性可见一斑。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"但在 LWN.net 的文章中，有这样的一段话："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"A total of 1,971 developers contributed to 5.10 — again, just short of the record set by 5.8. Of those developers, 252 (just under 13%) made their first contribution in 5.10; that is the lowest number seen since 5.6"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"华为自2012年以来向 Linux Kernel 社区贡献第一个补丁以来，8年来不断增加对 Linux Kernel 社区的投入，从1个补丁1个开发者参与到1434个补丁95个开发者参与，从0个 Maintainer 到26个 Maintainer。在代码贡献上，华为除了代码日常维护，Bug修复外，还将在 Linux 服务器操作系统领域中发现的新特性贡献给 Linux Kernel 社区。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"华为一直在遵循“奉献”“开放”的开源精神。通过切切实实的行动，解决一些 Linux Kernel 社区目前存在的问题，欢迎更多的开发者加入到 Linux Kernel 社区当中，让这个汇集了全球开发者智慧的 Linux Kernel 更加的枝繁叶茂。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"华为除了在 Linux Kernel 上不断贡献，还在其主导开源的 openEuler 社区中做着新的探索。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在刚刚发布的 openEuler 20.03 LTS SP1 版本中，openEuler 社区将 openEuler 20.09 创新版中的特性加入到 openEuler 20.03 LTS SP1 中，欢迎大家下载体验。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"Release Notes："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"https:\/\/openeuler.org\/zh\/news\/20201228.html"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"下载链接："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"https:\/\/repo.openeuler.org\/openEuler-20.03-LTS-SP1\/"}]}]}