Reverting back to a previous kernel version

I have the kernel 2.6.38-utrace which is having the utrace support in it. I want to provide the utrace support for 2.6.29.6 kernel. My plan is to revert back the 2.6.38-utrace kernel to 2.6.29.6 using git and finding a diff between them and usi开发者_高级运维ng it as a patch.

I am new to git. Can sombody kindly tell me the way to do this

Go back to the commit for Linux 2.6.29.6. Let's suppose it's 8e0ee4 (actually, that's 2.6.29):

git checkout 8e0ee4

Git will tell you you're now in a "detached HEAD state"; that's ok. Make a branch for your changes:

git checkout -b 2.6.29+utrace

Then use git log, GitHub or a GUI tool to find the commits that pertain to utrace support and use git cherry-pick to lift those into the current branch.

You can simply do a

git diff version1..version2

Hope this helps