Contributions to openEuler kernel project=========================================Sign CLA--------Before submitting any Contributions to openEuler, you have to sign CLA.See:https://openeuler.org/zh/cla.htmlhttps://openeuler.org/en/cla.htmlSteps of submitting patches---------------------------1. Compile and test your patches successfully.2. Generate patchesYour patches should be based on top of latest openEuler branch, and shoulduse git-format-patch to generate patches, and if it's a patchset, it'sbetter 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 openEuler patch format describebelow.3. Send patch to openEuler mailing listUse this command to send patches to openEuler mailing list:git send-email *.patch -to="firstname.lastname@example.org" --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 mailinglists.*See*: How to send patches using git-send-emailhttps://git-scm.com/docs/git-send-email4. Mark "v1, v2, v3 ..." in your patch subject if you have multiple versionsto send out.Use --subject-prefix="PATCH v2" option to add v2 tag for patchset.git format-patch --subject-prefix="PATCH v2" -1Subject examples:Subject: [PATCH v2 01/27] fork: fix some -Wmissing-prototypes warningsSubject: [PATCH v3] ext2: improve scalability of bitmap searching5. Upstream your kernel patch to kernel community is strongly recommended.openEuler will sync up with kernel master timely.6. Sign your work - the Developer’s Certificate of OriginAs the same of upstream kernel community, you also need to sign your patch.See: https://www.kernel.org/doc/html/latest/process/submitting-patches.htmlThe 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 iton as an open-source patch. The rules are pretty simple: if you can certifythe 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 havethe right to submit it under the open source license indicated inthe file; or(b The contribution is based upon previous work that, to the best ofmy knowledge, is covered under an appropriate open source licenseand I have the right under that license to submit that work withmodifications, whether created in whole or in part by me, underthe same open source license (unless I am permitted to submit undera different license), as indicated in the file; or(c) The contribution was provided directly to me by some other personwho certified (a), (b) or (c) and I have not modified it.(d) I understand and agree that this project and the contribution arepublic and that a record of the contribution (including all personalinformation I submit with it, including my sign-off) is maintainedindefinitely and may be redistributed consistent with this projector the open source license(s) involved.then you just add a line saying:Signed-off-by: Random J Developer <email@example.com>using your real name (sorry, no pseudonyms or anonymous contributions.)Use unified patch format------------------------Reasons:1. long term maintainabilityopenEuler will merge massive patches. If all patches are merged by casualchangelog format without a unified format, the git log will be messy, andthen it's hard to figure out the original patch.2. kernel upgradeWe definitely will upgrade our openEuler kernel in someday, using strictpatch management will alleviate the pain to migrate patches during big upgrade.3. easy for script parsingKeyword 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: featurefeature: YYY (the feature name)If the patch is related to CVE or bugzilla, then we need add the correspondingtag like below (In general, it should include at least one of the following):CVE: $cve-idbugzilla: $bug-idAdditional changelog should include at least one of the flollwing:1) Why we should apply this patch2) What real problem in product does this patch resolved3) How could we reproduce this bug or how to test4) Other useful information for help to understand this patch or problemThe detail information is very useful for porting patch to another kenrel branch.Example for mainline patch:mainline inclusion [M]from $mainline-version [M]commit $id [M]category: $category [M]bugzilla: $bug-id [O]CVE: $cve-id [O]additional changelog [O]--------------------------------original changelogSigned-off-by: $yourname <$firstname.lastname@example.org> [M]($mainline-version could be mainline-3.5, mainline-3.6, etc...)Examples--------mainline inclusionfrom mainline-4.10commit 0becc0ae5b42828785b589f686725ff5bc3b9b25category: bugfixbugzilla: 3004CVE: NAThe patch fixes a BUG_ON in the product: injecting single bit ECC errorto memory before system boot use hardware inject tools, which cause alarge 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 <email@example.com>Tested-by: Li Si <firstname.lastname@example.org>Email Client - Thunderbird Settings-----------------------------------If you are newly developer in the kernel community, it is highly recommendedto use thunderbird mail client.1. Thunderbird InstallationGet English version Thunderbird from http://www.mozilla.org/ and installit on your system。Download url: https://www.thunderbird.net/en-US/thunderbird/all/2. Settings2.1 Use plain text format instead of HTML formatOptions -> Account Settings -> Composition & Addressing, do *NOT* select"Compose message in HTML format".2.2 Editor SettingsTools->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-wrapLinux kernel============There are several guides for kernel developers and users. These guides canbe rendered in a number of formats, like HTML and PDF. Please readDocumentation/admin-guide/README.rst first.In order to build the documentation, use ``make htmldocs`` or``make pdfdocs``. The formatted documentation can also be read online at:https://www.kernel.org/doc/html/latest/There are various text files in the Documentation/ subdirectory,several of them using the Restructured Text markup notation.See Documentation/00-INDEX for a list of what is contained in each file.Please read the Documentation/process/changes.rst file, as it contains therequirements for building and running the kernel, and information aboutthe problems which may result by upgrading your kernel.
：Code submit frequency
：React/respond to issue & PR etc.
：Well-balanced team members and collaboration
：Recent popularity of project
：Star counts, download counts etc.