Need help to understand Linux kernel source versioning systems

[vibnwis <vibnwis@xxxxxxxxx>]

Hi there,

Being a newbie, I encountered the following scenarios when tracing build_kernel.sh script from eewiki. Would someone help me to understand why please? From my experience, I would to summarize the following scenario.

1. First, source is cloned from https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git and checked for release version, "v4.10.17". Obviously it has no kernel tag of "v4.10.17", but "v4.10"

2. As "v4.10.17" does not exist, it tried to pull from the origin/master by command, git pull --no-edit https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --tags

3. Kernel tag, of "v4.10.17" is checked being verified again, but failed. Hence, now it fetched from  git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git master --tags

Now, the kernel, of v4.10.17" is found.

My questions are:

1. One would know that clone of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git would not produce kernel tag of , "v4.10.17", wouldn't it?

2. Similar by pull it again from https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git with option of master --tags would not produce kernel tag, "v4.10.17" as well, wouldn' it?

3. Since fetching with git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git master --tags would produce v4.10.17, why would not it clone it from .../stable/linux-stable,git?

I know that the answers would be very lengthy and I would probably need some basics of LInux kernel to understand the answers. However, I will investigate further for things that I don't understand. For now, please educate me if you could.

The following are the snapshot of the process getting the kernel source.

> git clone https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git /home/qws/myGithub/Panda-Repo/armv7-multiplatform/ignore/linux-src

2.
> git clone --shared /home/qws/myGithub/Panda-Repo/armv7-multiplatform/ignore/linux-src /home/qws/myGithub/Panda-Repo/armv7-multiplatform/KERNEL


3.
> git tag | grep "v4.10.17" | grep -v rc > /dev/null 2>&1 || git_kernel_torvalds
# The following is resulted of git_kernel_torvalds being executed, as the former command failed
> git pull --no-edit https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --tags

4.
> git tag | grep "v4.10.17" | grep -v rc > /dev/null 2>&1 || git_kernel_stable
# The following is resulted of git_kernel_stable being execuated, as the former command failed
> git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git master --tags

Thank you

Best regards

Lim

_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies