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Tips & Tricks

git(7) is a version control system created by Linus Torvalds for maintaining Linux. It's also used by many subsystem maintainers. By using it, kernel janitor will get simple way to get latest and greatest Linux source code, simple and fast way to create a patch.
See official git website, Kernel Hackers' Guide to git, published git trees at kernel.org.
Use cscope(1) or ctags(1) to speed up finding functions.
ketchup(1) is very useful for keeping kernels up to date.
quilt(1) really simplifies managing lots of ugly hacks patches.
Diffing full kernel trees will be much faster if you hardlink them in advance and teach your editor to break hardlinks when saving files.
vim users can do echo "set backupcopy=auto,breakhardlink" >>~/.vimrc
Typing Signed-off-by lines will get boring really soon, so you may add the following to your .vimrc:
map <F1> ^iSigned-off-by: Joe Kernel Hacker <jkh@example.com><CR><ESC>^ map! <F1> Signed-off-by: Joe Kernel Hacker <jkh@example.com><CR>
Trailing or broken whitespace. The trick is to not fix it except when absolutely necessary. The following .vimrc recipe will help you not add more wrong whitespace.
let c_space_errors=1 highlight WhitespaceEOL ctermbg=red guibg=red match WhitespaceEOL /\s\+$/

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