linux-kernel - [RFC PATCH v2 0/3] cgroup/pids: Make pids.events notifications affine to pids.max

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200205134426.10570-1-mkoutny@suse.com>
Date:   Wed,  5 Feb 2020 14:44:23 +0100
From:   Michal Koutný <mkoutny@...e.com>
To:     cgroups@...r.kernel.org
Cc:     Tejun Heo <tj@...nel.org>, Li Zefan <lizefan@...wei.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Aleksa Sarai <cyphar@...har.com>, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v2 0/3] cgroup/pids: Make pids.events notifications affine to pids.max

Currently, when pids.max limit is breached in the hierarchy, the event
is counted and reported in the cgroup where the forking task resides. This
isn't hierarchical neither binds event to its limit

Reasons for RFC:

1) Introduction of new event type.

2) Missing one step further would be to distinguish pids.events and
   pids.events.local.

Changes from v1:  https://lkml.kernel.org/r/20191128172612.10259-1-mkoutny@suse.com
- introduce two separate types of events
- make event counting hierarchical

Michal Koutný (3):
  cgroup/pids: Separate semantics of pids.events related to pids.max
  cgroup/pids: Make event counters hierarchical
  selftests: cgroup: Add basic tests for pids controller

 Documentation/admin-guide/cgroup-v1/pids.rst |   3 +-
 Documentation/admin-guide/cgroup-v2.rst      |  14 ++
 kernel/cgroup/pids.c                         |  92 +++++++--
 tools/testing/selftests/cgroup/Makefile      |   8 +-
 tools/testing/selftests/cgroup/test_pids.c   | 188 +++++++++++++++++++
 5 files changed, 288 insertions(+), 17 deletions(-)
 create mode 100644 tools/testing/selftests/cgroup/test_pids.c

-- 
2.24.1