cgroup hierarchy controls and stats

Date: Wed, 2 Aug 2017 17:55:28 +0100
From: Roman Gushchin <[email protected]>
To: [email protected]
Cc: Roman Gushchin <[email protected]>
Subject: [RFC 0/4] cgroup hierarchy controls and stats
X-Mailer: git-send-email 2.13.3

Creating cgroup hierearchies of an unreasonable size can affect system performance. A user might want to limit the size of the cgroup hierarchy.

This patchset implements an ability to control and monitor cgroup hierarchy size.

Patch 1 implements tracking of live and dying descendant cgroups
on each cgroup level.
Patch 2 adds cgroup.max.descendants and cgroup.max.depth interfaces
to set up hierarchy limits.
Patch 3 adds cgroup.stat interface with simple hierarchy stats. Patch 4 is a trivial cleanup.

Roman Gushchin (4):
cgroup: keep track of number of descent cgroups
cgroup: implement hierarchy limits
cgroup: add cgroup.stat interface with basic hierarchy stats
cgroup: re-use the parent pointer in cgroup_destroy_locked()

 Documentation/cgroup-v2.txt |  32 +++++++++
 include/linux/cgroup-defs.h |  13 ++++
 kernel/cgroup/cgroup.c      | 163 +++++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 205 insertions(+), 3 deletions(-)

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2.13.3