CKRM (Class-based Kernel Resource Management) project started to give better resource management in linux kernel and later its been stoped and not mearged with linux kernel.
Later similar project started for same purpose called cgroup and mearged with 2.6 onwards.
We can also get more details from linux source code Documentation's cgroup directory.
In my system its: /usr/src/linux-3.14.1/Documentation/cgroups