footliner.blogg.se - Submitting to linux kernel

#Submitting to linux kernel how to
#Submitting to linux kernel Patch
#Submitting to linux kernel android
#Submitting to linux kernel software
#Submitting to linux kernel code

See also: History of Linux and Linux kernel version history Linus Torvalds at the LinuxCon Europe 2014 in Düsseldorf

#Submitting to linux kernel software

Changes are tracked using the version control system git, which was originally authored by Torvalds as a free software replacement for BitKeeper. : 379–380ĭay-to-day development discussions take place on the Linux kernel mailing list (LKML). This produces a highly optimized executable ( vmlinux) with respect to utilization of memory space and task execution times.

#Submitting to linux kernel code

Most of the Linux kernel code is written using the GNU extensions of GCC : 18 to the standard C programming language and with the use of architecture-specific instructions ( ISA) in limited parts of the kernel. It can be tailored for specific architectures and for several usage scenarios using a family of simple commands (that is, without the need of manually editing its source code before compilation) privileged users can also fine-tune kernel parameters at runtime.

#Submitting to linux kernel android

Linux is deployed on a wide variety of computing systems, such as embedded devices, mobile devices (including its use in the Android operating system), personal computers, servers, mainframes, and supercomputers. Since the late 1990s, it has been included as part of a large number of operating system distributions, many of which are commonly also called Linux. Linux is provided under the GNU General Public License version 2 only, but it contains files under other compatible licenses. It was originally written in 1991 by Linus Torvalds for his i386-based PC, and it was soon adopted as the kernel for the GNU operating system, which was written to be a free (libre) replacement for Unix. The Linux kernel is a free and open-source, : 4 monolithic, modular, multitasking, Unix-like operating system kernel. org /pub /scm /linux /kernel /git /torvalds /linux. Git format-patch -subject-prefix='PATCH v2' master.

#Submitting to linux kernel Patch

We have to send a new email witch PATCH v2 as the prefix. We can’t send the revised patch in the same email thread. We can reference this document Appendix C: Revise the patch # Stable tree is maintained by Greg Kroah-Hartman.

Appendix B: Submit patch into stable tree # (note: you’ll need to witch to plain text mode if you’re using gmail.) Appendix # Appendix A: Archives of mail list #

git send-email -to -cc 0001-xxxxxx-xxxxx.patchĪfter sending the patch, we can communicate with maintainer through replying the email.

Note: We should send to at least a maintainer and a open mail list.

e.g./scripts/get_ 0001-xxxxxx-xxxxx.patch.

Fourth step, find which maintainer we should email to using get_.

Third step, check is there improper style in the patch using.

Second step, use git format-patch master.your_branch to generate patch file.

It shows that you signed the Linux’s Developer Certificate of Origin.

First step, add Signed-off-by NAME into your commit message.

#Submitting to linux kernel how to

Since each subsystem has its own rule, I only describe how to send a general patch.įor simplicity, I divide the process into five steps For subsystem maintainer, each subsystem has its own document.For Linus, we can reference this document.How do we know what should we do to get their approvals? Therefore, in order to get our code into Linus repo, we’ll need at least two approvals. Subsystem maintainer sends pull request to Linus.Subsystem maintainer commits the patch into subsystem tree.We send a patch to the subsystem maintainer.So, if we want to add code to Linus repo, all we have to do is sending a patch to the subsystem maintainer. And when Linus’s merge window is opened, subsystem mainainter will send pull request to Linus. Every new changes in the subsystem will be committed into the subsytem tree first. Hence, there are different maintianers and reviewers of each subsystem and file.Ī subsystem ususally has its own Linux repo. It’s not practical for Linus to handle all the sumbits by himself. However, the codebase of Linux is quite large. So, what could we do if we want to add code into Linus tree? Also, when a new version is released, he’ll split a new branch and the stable tree maintainer will take care of the new branch. He releases the new version Linux kernel regularly. Linus Torvalds maintains a Linux source repo.

So, I decided to write down how it works. I found that the Linux development process is quite different from other open source projects.

Recently, I needed to submit a patch to Linux kernel.Īfter waiting for a long time, my patch finally got merged into Linus tree.