Add some file into .gitignore is suitable?

Hi all,
I clone our git reposity, and create cscope index into the project
(to navigate the source code). But i execute the command "git status" and find some warning information "Untracked files: cscope.*".
I just want to if adding cscope.* into .gitignore file to ignore
some file is suitable (such as linux kernel .gitignore)?

Thanks,
Jason