June 2021 - Kernel - lists.openatom.io

[PATCH OHOS-4.19] Document: add guideline to submitting patches to OpenHarmony kernel

by Yu Changchun

From: Xie XiuQi <xiexiuqi(a)huawei.com> ohos inclusion category: doc issue: NA CVE: NA We need to document our rules of submitting patches to OpenHarmony, it contains the basic step of submitting patches, and unified patch format. This guideline is important for OpenHarmony daily works, so I prefer to place it into kernel root directory, it would be easy to access and reference it. Signed-off-by: Xie XiuQi <xiexiuqi(a)huawei.com> Signed-off-by: Hanjun Guo <guohanjun(a)huawei.com> [add ohos patch template and tips for developers] Signed-off-by: Yu Changchun <yuchangchun1(a)huawei.com> --- README | 252 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 252 insertions(+) diff --git a/README b/README index 2c927ccbd970..baf16b7d1390 100644 --- a/README +++ b/README @@ -1,3 +1,255 @@ +Contributions to OpenHarmony linux kernel project +========================================= + +Sign DCO +-------- + +Before submitting any Contributions to OpenHarmony kernel, you have to sign DCO. + +See: + https://dco.openharmony.io/sign-dco + +Steps of submitting patches +--------------------------- + +1. Compile and test your patches successfully. + You should test your patch in OpenHamrony supported boards, hi3516dv300, etc. + +2. Generate patches + Your patches should be based on top of latest OpenHarmony branch, and should + use git-format-patch to generate patches, and if it's a patchset, it's + better to use --cover-letter option to describe what the patchset does. + + Using scripts/checkpatch.pl to make sure there's no coding style issue. + + And make sure your patch follow unified OpenHarmony patch format describe + below. + + *Tips*: Learn more about linux kernel coding style + en: https://gitee.com/openharmony/kernel_linux/blob/master/Documentation/proces… + zh: https://gitee.com/openharmony/kernel_linux/blob/master/Documentation/transl… + +3. Send patch to OpenHarmony mailing list + Use this command to send patches to OpenHarmony kernel mailing list: + + git send-email *.patch -to="kernel(a)openharmony.io" --suppress-cc=all + + *NOTE*: that you must add --suppress-cc=all if you use git send-email, + otherwise the email will be cced to the people in upstream community and mailing + lists. + + *Tips*: Subscribe the mailing list + https://lists.openatom.io/postorius/lists/kernel.openharmony.io/ + + *See*: How to send patches using git-send-email + https://git-scm.com/docs/git-send-email + +4. Mark "v1, v2, v3 ..." in your patch subject if you have multiple versions + to send out. + + Use --subject-prefix="PATCH v2" option to add v2 tag for patchset. + git format-patch --subject-prefix="PATCH v2" -1 + + Subject examples: + Subject: [PATCH v2 01/27] fork: fix some -Wmissing-prototypes warnings + Subject: [PATCH v3] ext2: improve scalability of bitmap searching + +5. Upstream your kernel patch to kernel community is strongly recommended. + OpenHarmony will sync up with kernel master timely. + +6. Sign your work - the Developer’s Certificate of Origin + As the same of upstream kernel community, you also need to sign your patch. + + See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html + + The sign-off is a simple line at the end of the explanation for the patch, + which certifies that you wrote it or otherwise have the right to pass it + on as an open-source patch. The rules are pretty simple: if you can certify + the below: + + Developer’s Certificate of Origin 1.1 + ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + + By making a contribution to this project, I certify that: + + (a) The contribution was created in whole or in part by me and I have + the right to submit it under the open source license indicated in + the file; or + + (b The contribution is based upon previous work that, to the best of + my knowledge, is covered under an appropriate open source license + and I have the right under that license to submit that work with + modifications, whether created in whole or in part by me, under + the same open source license (unless I am permitted to submit under + a different license), as indicated in the file; or + + (c) The contribution was provided directly to me by some other person + who certified (a), (b) or (c) and I have not modified it. + + (d) I understand and agree that this project and the contribution are + public and that a record of the contribution (including all personal + information I submit with it, including my sign-off) is maintained + indefinitely and may be redistributed consistent with this project + or the open source license(s) involved. + + then you just add a line saying: + + Signed-off-by: Random J Developer <random(a)developer.example.org> + + using your real name (sorry, no pseudonyms or anonymous contributions.) + +Use unified patch format +------------------------ + +Reasons: + +1. long term maintainability + OpenHarmony will merge massive patches. If all patches are merged by casual + changelog format without a unified format, the git log will be messy, and + then it's hard to figure out the original patch. + +2. kernel upgrade + We definitely will upgrade our OpenHarmony kernel in someday, using strict + patch management will alleviate the pain to migrate patches during big upgrade. + +3. easy for script parsing + Keyword highlighting is necessary for script parsing. + +Patch format definition +----------------------- + +[M] stands for "mandatory" +[O] stands for "option" +$category can be: bug preparation, bugfix, perf, feature, doc, other... + +If category is feature, then we also need to add feature name like below: + category: feature + feature: YYY (the feature name) + +If the patch is related to CVE or issue/bugzilla, then we need add the corresponding +tag like below (In general, it should include at least one of the following): + CVE: $cve-id or NA + issue: $issue-id or NA + bugzilla: $bug-id or NA + +issue: https://gitee.com/openharmony/kernel_linux/issues + +Additional changelog should include at least one of the flollwing: + 1) Why we should apply this patch + 2) What real problem in product does this patch resolved + 3) How could we reproduce this bug or how to test + 4) Other useful information for help to understand this patch or problem + +The detail information is very useful for porting patch to another kenrel branch. + +1. stable patch + stable inclusion [M] + from $stable-version [M] + commit $id [M] + bugzilla: $bug-id [O] + issue: $issue-id [O] + CVE: $cve-id [O] + + additional changelog [O] + + -------------------------------- + + original changelog + + Signed-off-by: $your_name <$your_mail> [M] + + ($stable-version would be stable-4.19.156, stable-4.19.157, etc... + $id would be stable commit) + +2. mainline patch: + + mainline inclusion [M] + from $mainline-version [M] + commit $id [M] + category: $category [M] + bugzilla: $bug-id [O] + issue: $issue-id [O] + CVE: $cve-id [O] + + additional changelog [O] + + -------------------------------- + + original changelog + + Signed-off-by: $your_name <$your_mail> [M] + + ($mainline-version could be mainline-5.6, mainline-5.10, etc... + $id would be mainline commit) + +3. ohos patch + ohos inclusion [M] + category: $category [M] + bugzilla: $bug-id or NA [O] + issue: $issue-id or NA [O] + CVE: $cve-id or NA [O] + + -------------------------------- + + changelog + + Signed-off-by: $your_name <$your_mail> [M] + +Examples +-------- + +mainline inclusion +from mainline-4.10 +commit 0becc0ae5b42828785b589f686725ff5bc3b9b25 +category: bugfix +issue: 1000 +CVE: NA + +The patch fixes a BUG_ON in the product: injecting single bit ECC error +to memory before system boot use hardware inject tools, which cause a +large amount of CMCI during system booting . + +[ 1.146580] mce: [Hardware Error]: Machine check events logged +[ 1.152908] ------------[ cut here ]------------ +[ 1.157751] kernel BUG at kernel/timer.c:951! +[ 1.162321] invalid opcode: 0000 [#1] SMP +... + +------------------------------------------------- + +original changelog + +<original S-O-B> +Signed-off-by: Zhang San <zhangsan(a)163.com> +Tested-by: Li Si <lisi(a)163.com> + +Email Client - Thunderbird Settings +----------------------------------- + +If you are newly developer in the kernel community, it is highly recommended +to use thunderbird mail client. + +1. Thunderbird Installation + Get English version Thunderbird from http://www.mozilla.org/ and install + it on your system。 + + Download url: https://www.thunderbird.net/en-US/thunderbird/all/ + +2. Settings + 2.1 Use plain text format instead of HTML format + Options -> Account Settings -> Composition & Addressing, do *NOT* select + "Compose message in HTML format". + + 2.2 Editor Settings + Tools->Options->Advanced->Config editor. + + - To bring up the thunderbird's registry editor, and set: + "mailnews.send_plaintext_flowed" to "false". + - Disable HTML Format: Set "mail.identity.id1.compose_html" to "false". + - Enable UTF8: Set "prefs.converted-to-utf8" to "true". + - View message in UTF-8: Set "mailnews.view_default_charset" to "UTF-8". + - Set mailnews.wraplength to 9999 for avoiding auto-wrap + Linux kernel ============ -- 2.25.1

2 years, 10 months

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test2

by Lijiaxin (Nina Li)

Test2

2 years, 10 months

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答复: test from Nina

by Lijiaxin (Nina Li)

Test again 发件人: Lijiaxin (Nina Li) 发送时间: 2021年6月22日 10:20 收件人: 'kernel(a)openharmony.io' <kernel(a)openharmony.io> 主题: 答复: test from Nina Test again 发件人: Lijiaxin (Nina Li) 发送时间: 2021年6月21日 17:28 收件人: 'kernel(a)openharmony.io' <kernel(a)openharmony.io<mailto:kernel@openharmony.io>> 主题: test from Nina Test from Nina

2 years, 10 months

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[OpenHarmony]test the email list , please ignore.

by yuchangchun (C)

Welcome to OpenHarmony linux kernel!

2 years, 10 months

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测试邮件

by 李勇

测试 ------------------ 信息安全声明:本邮件(含附件，如有)中可能涉及专有且保密的信息，仅限上⽅所列示的收件人知悉。所有权利属于发件⼈及其所属机构。请您注意保密，未经发件人事先书⾯许可，请勿向第三方透露本邮件内任何信息。谢谢。 ATTENTION: This email (with attachment, if any) may contain PROPRIETARY AND CONFIDENTIAL INFORMATION and intended only for information of the recipient(s) listed above. All rights belong to the sender and/or the organization to whom the sender is affiliated. Please keep confidential and do not disclose any or all information contained herein to any third-party without prior written permission of the sender. Thank you.  

2 years, 10 months

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[OpenHarmony]test the email list , please ignore.

by yuchangchun (C)

Welcome to OpenHarmony linux kernel!

2 years, 10 months

1
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答复: test from Nina

by Lijiaxin (Nina Li)

Test again 发件人: Lijiaxin (Nina Li) 发送时间: 2021年6月21日 17:28 收件人: 'kernel(a)openharmony.io' <kernel(a)openharmony.io> 主题: test from Nina Test from Nina

2 years, 10 months

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[OpenHarmony]test the email list again, please ignore.

by yuchangchun (C)

Welcome to OpenHarmony linux kernel!

2 years, 10 months

1
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test from Nina

by Lijiaxin (Nina Li)

Test from Nina

2 years, 10 months

1
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0 0

[OpenHarmony]test email list, please ignore.

by yuchangchun (C)

Welcome to OpenHarmony linux kernel!

2 years, 10 months

1
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