Linux CFS调度程序代码在哪里？

I have complete linux source code for version 3.13. I was trying to find out source code for CFS scheduler which according to popular books should reside inside /kernel/sched.c for base scheduler code and /kernel/sched_fair.c specifically for CFS code. I just made a code wide global search for those two files inside my 3.13 linux code which turned up no results. I also individually searched /linux-3.13/kernel folder and /linux-3.13/kernel/sched folders. Still no luck.I have complete linux source code for version 3