Confuse about compile the kernel

[Diaob]

I clone the this android kernel today but found I can't compile this kernel.
I don't know what I have missed.With the following problem caused:smp_mb__after_atomic......smp_mb__before_atomic....
this is may the RAM management in the kernel,but I really don't know how to deal with them.
By the way,I'm a green hand,I don't know how to build android for OnePlus.But I sincerely want to know how to do this job,and I want to contribute my power into it to make OnePlus known for more people.Can you(Oxygen or H2O OS) send some tutorial through E-mail(diaobdiaob@gmail.com) to me?Thanks very much.
Regards.