# Linux Kernel Patch ## Linux Kernel Patch ```bash user@workstation:~/linux$ git status On branch master Your branch is up-to-date with 'origin/master'. Changes not staged for commit: (use "git add ..." to update what will be committed) (use "git checkout -- ..." to discard changes in working directory) modified: drivers/Kconfig modified: drivers/Makefile Untracked files: (use "git add ..." to include in what will be committed) drivers/helloworld/ no changes added to commit (use "git add" and/or "git commit -a") user@workstation:~/linux$ ``` ```bash user@workstation:~/linux$ git add drivers/Kconfig drivers/Makefile drivers/helloworld/ ``` ```bash user@workstation:~/linux$ git status On branch master Your branch is up-to-date with 'origin/master'. Changes to be committed: (use "git reset HEAD ..." to unstage) modified: drivers/Kconfig modified: drivers/Makefile new file: drivers/helloworld/Kconfig new file: drivers/helloworld/Makefile new file: drivers/helloworld/helloworld.c user@workstation:~/linux$ ``` ```bash user@workstation:~/linux$ git commit -s ``` ```bash Drivers: Hello World Optimized Hello World Kernel Module Signed-off-by: Abraham Arce # Please enter the commit message for your changes. Lines starting # with '#' will be ignored, and an empty message aborts the commit. # # Date: Wed May 31 18:01:26 2017 -0500 # # On branch master # Your branch is ahead of 'origin/master' by 1 commit. # (use "git push" to publish your local commits) # # Changes to be committed: # modified: drivers/Kconfig # modified: drivers/Makefile # new file: drivers/helloworld/Kconfig # new file: drivers/helloworld/Makefile # new file: drivers/helloworld/helloworld.c # ``` ```bash [master b81849d] Drivers: Hello World 5 files changed, 36 insertions(+) create mode 100644 drivers/helloworld/Kconfig create mode 100644 drivers/helloworld/Makefile create mode 100644 drivers/helloworld/helloworld.c user@workstation:~/linux$ ``` ```bash user@workstation:~/linux$ git log ``` ```bash commit a5f811e5cd53fc7a4a07033d57694147d5b5c914 Author: Abraham Arce Date: Wed May 31 18:01:26 2017 -0500 Drivers: Hello World Optimized Hello World Kernel Module Signed-off-by: Abraham Arce ``` ```bash user@workstation:~/linux$ scripts/checkpatch.pl patches/0001-Drivers-Hello-World.patch WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? #45: new file mode 100644 WARNING: please, no spaces at the start of a line #79: FILE: drivers/helloworld/helloworld.c:8: + printk(KERN_INFO "Module? Hello!\n");$ WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(... to printk(KERN_INFO ... #79: FILE: drivers/helloworld/helloworld.c:8: + printk(KERN_INFO "Module? Hello!\n"); WARNING: please, no spaces at the start of a line #80: FILE: drivers/helloworld/helloworld.c:9: + return 0;$ WARNING: please, no spaces at the start of a line #85: FILE: drivers/helloworld/helloworld.c:14: + printk(KERN_INFO "Module? Bye!\n");$ WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then dev_info(dev, ... then pr_info(... to printk(KERN_INFO ... #85: FILE: drivers/helloworld/helloworld.c:14: + printk(KERN_INFO "Module? Bye!\n"); total: 0 errors, 6 warnings, 47 lines checked NOTE: For some of the reported defects, checkpatch may be able to mechanically convert to the typical style using --fix or --fix-inplace. patches/0001-Drivers-Hello-World.patch has style problems, please review. NOTE: If any of the errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. user@workstation:~/linux$ ``` ## Git Send Email * [documentation Git Send Email](https://git-scm.com/docs/git-send-email) ```bash root@workstation:~# apt install git-email ``` ```bash user@workstation:~/linux$ nano ~/.gitconfig [user] name = Abraham Arce email = email@gmail.com [push] default = simple [sendemail] smtpEncryption = tls smtpServer = smtp.gmail.com smtpUser = email@gmail.com smtpServerPort = 587 ``` ```bash user@workstation:~/linux$ git format-patch -M origin/master 0001-Drivers-Hello-World.patch ``` ```bash user@workstation:~/linux$ git format-patch -M origin/master -o patches/ patches/0001-Drivers-Hello-World.patch ``` ```bash user@workstation:~/linux$ git send-email patches/0001-Drivers-Hello-World.patch patches/0001-Drivers-Hello-World.patch Who should the emails be sent to (if any)? xe1gyq@gmail.com Message-ID to be used as In-Reply-To for the first email (if any)? (mbox) Adding cc: Abraham Arce from line 'From: Abraham Arce ' (body) Adding cc: Abraham Arce from line 'Signed-off-by: Abraham Arce ' From: Abraham Arce To: xe1gyq@gmail.com Subject: [PATCH] Drivers: Hello World Date: Wed, 31 May 2017 18:21:18 -0500 Message-Id: <1496272878-7212-1-git-send-email-xe1gyq@gmail.com> X-Mailer: git-send-email 2.1.4 The Cc list above has been expanded by additional addresses found in the patch commit message. By default send-email prompts before sending whenever this occurs. This behavior is controlled by the sendemail.confirm configuration setting. For additional information, run 'git send-email --help'. To retain the current behavior, but squelch this message, run 'git config --global sendemail.confirm auto'. Send this email? ([y]es|[n]o|[q]uit|[a]ll): y Password for 'smtp://hochob.vc@gmail.com@smtp.gmail.com:587': Password for 'smtp://hochob.vc@gmail.com@smtp.gmail.com:587': OK. Log says: Server: smtp.gmail.com MAIL FROM: RCPT TO: From: Abraham Arce To: xe1gyq@gmail.com Subject: [PATCH] Drivers: Hello World Date: Wed, 31 May 2017 18:26:52 -0500 Message-Id: <1496273212-7350-1-git-send-email-xe1gyq@gmail.com> X-Mailer: git-send-email 2.1.4 Result: 250 2.0.0 OK 1496273188 v188sm27267079pgv.51 - gsmtp user@workstation:~/linux$ ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://theiotlearninginitiative.gitbook.io/coba/linux-kernel-patch.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. 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