EINTR and epoll_ctl, should I check errno?

Question

I am looking through code for FreeBSD. The code uses kevent programming interface. Now, I find the lines like below:

status = kevent(...)
if(status < 0){
 if(EINTR == errno){
  goto l_kevent;
 }
 /* ... */
}

I need to port the code for Linux, and I wonder... Should I check for EINTR with Linux epoll calls. I know that epoll has epoll_pwait, and it is still should be checked for EINTR. But the documentation I have on hand tells me nothing about the epoll_ctl calls being interruptible.

I can look into source code for epoll. But, as humble, as I am, I do not know how signals are handled in kernel. So, if the code itself relies on some interrupt mechanics, I do not know where to look for return codes of interest.

Hope I explained problem. The question, once again: my documentation tell me nothing on epoll_ctl being interruptible, what should I do? Should I check for EINTR?

P.S If someone will point me out for the source code for the epoll, that I can comprehend, I will gladly try to do my own research.