[Devel] [PATCH 0/9] [RFC] CGroup Hierarchy Extensions

[Paul Menage]

The following series adds support for:

- named cgroup hierarchies
- cgroup hierarchies with no bound subsystems
- cgroup subsystems that can be bound to multiple hierarchies

This allows more flexibility when constructing/mounting cgroups
hierarchies, and allows functionality that's not tied to specific
external resources to be made available on multiple cgroups
hierarchies rather than just one.

A few simple example cgroups subsystems that are multi-bindable are
included in the patch series.

---

Paul Menage (9):
      [RFC] Support named cgroups hierarchies
      [RFC] Move the cgroup debug subsys into cgroup.c to access internal state
      [RFC] Add a back-pointer from struct cg_cgroup_link to struct cgroup
      [RFC] Allow cgroup hierarchies to be created with no bound subsystems
      [RFC] Remove cgroup_subsys.root pointer
      [RFC] Remove the cgroup_subsys.bind callback
      [RFC] Support multiply-bindable cgroup subsystems
      [RFC] Example multi-bindable subsystem: a per-cgroup notes field
      [RFC] Example multi-bindable subsystem: a max-depth controller


 Documentation/cgroups/cgroups.txt |    8 
 include/linux/cgroup.h            |   55 ++
 include/linux/cgroup_subsys.h     |   14 +
 init/Kconfig                      |   17 +
 kernel/Makefile                   |    3 
 kernel/cgroup.c                   |  905 +++++++++++++++++++++++++++----------
 kernel/cgroup_debug.c             |  105 ----
 kernel/info_cgroup.c              |  133 +++++
 kernel/maxdepth_cgroup.c          |   80 +++
 9 files changed, 938 insertions(+), 382 deletions(-)
 delete mode 100644 kernel/cgroup_debug.c
 create mode 100644 kernel/info_cgroup.c
 create mode 100644 kernel/maxdepth_cgroup.c

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