Liangxu Linux

Feb 12, 2022 · Fundamentals

Understanding Linux CGroup Internals: Key Structures and Resource Control

This article walks through the Linux 2.6.25 CGroup implementation by examining core kernel structures such as cgroup, cgroup_subsys_state, mem_cgroup, css_set, and cgroup_subsys, explaining how they form hierarchical resource control, how mounting and task attachment work, and how memory limits are enforced.