control group (cgroup) · Maintained

Maintainers

• M Tejun Heo <tj@kernel.org>
• M Johannes Weiner <hannes@cmpxchg.org>
• M Michal Koutný <mkoutny@suse.com>

Paths

• F Documentation/admin-guide/cgroup-v1/
• F Documentation/admin-guide/cgroup-v2.rst
• F include/linux/cgroup*
• F kernel/cgroup/
• F tools/testing/selftests/cgroup/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v8 0/6] cgroup/dmem,drm/ttm: Improve protection in contended cases
  2026-08-04 08:25 · 2 replies in 7d · Natalie Vock <natalie.vock@gmx.de>
• HOTtoday [PATCH 0/2] selftests/cgroup: test_zswap: fix single-core flakes
  2026-08-04 04:21 · 2 replies in 7d · Wilson Felipe Pereira <hidden>
• HOTtoday [RFC PATCH v1 0/3] blk-cgroup: store blkcg in bio before blkcg_mutex conversion
  2026-08-04 06:54 · 1 reply in 7d · Yu Kuai <yukuai@kernel.org>
• WARM2d [PATCH] cgroup: drop unneeded semicolon
  2026-08-01 19:10 · 0 replies in 7d · Julia Lawall <Julia.Lawall@inria.fr>
• WARM1d [PATCH] selftests/cgroup: test_zswap: skip test_no_kmem_bypass if debugfs is unavailable
  2026-08-01 04:13 · 0 replies in 7d · Wilson Felipe Pereira <hidden>
• WARM2d [PATCH 0/2] selftests/cgroup: misc cleanups for test_cpu.c
  2026-07-30 13:07 · 3 replies in 7d · Shaojie Sun <hidden>

Active reviewers (last 30 days)

• <hidden>
  6 attestations (3 Reported-by, 3 Tested-by) · last on 2026-07-15
• Qiliang Yuan <hidden>
  6 attestations (6 Co-developed-by) · last on 2026-07-10
• Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
  4 attestations (4 Reviewed-by) · last on 2026-07-25
• Tejun Heo <tj@kernel.org>
  4 attestations (3 Reported-by, 1 Suggested-by) · last on 2026-07-15
• Zi Yan <ziy@nvidia.com>
  3 attestations (1 Reviewed-by, 2 Suggested-by) · last on 2026-07-15
• Chen Ridong <hidden>
  3 attestations (3 Reviewed-by) · last on 2026-07-15
• Waiman Long <longman@redhat.com>
  3 attestations (3 Acked-by) · last on 2026-07-12
• Maarten Lankhorst <dev@lankhorst.se>
  2 attestations (2 Reviewed-by) · last on 2026-08-04
• Michal Koutný <mkoutny@suse.com>
  2 attestations (2 Acked-by) · last on 2026-07-28
• Shakeel Butt <shakeel.butt@linux.dev>
  2 attestations (2 Suggested-by) · last on 2026-07-21

Recent patches

Most-recent 30 patches in this subsystem on cgroups (capped at 30), ordered by date desc.

• HOTtoday [PATCH v8 2/6] cgroup,cgroup/dmem: Add (dmem_)cgroup_common_ancestor helper
  2026-08-04 · Natalie Vock <natalie.vock@gmx.de>
• HOTtoday REVIEWED: 1 (1M) [PATCH v8 1/6] cgroup/dmem: Add queries for protection values
  2026-08-04 · Natalie Vock <natalie.vock@gmx.de>
• HOTtoday [RFC PATCH v1 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-08-04 · Yu Kuai <yukuai@kernel.org>
• HOTtoday [PATCH 2/2] selftests/cgroup: test_zswap: fix implicit unsigned promotion bug in test_no_kmem_bypass
  2026-08-04 · Wilson Felipe Pereira <hidden>
• HOTtoday [PATCH 1/2] selftests/cgroup: test_zswap: retry subtree_control write on EBUSY in test_zswap_writeback
  2026-08-04 · Wilson Felipe Pereira <hidden>
• WARM2d [PATCH] cgroup: drop unneeded semicolon
  2026-08-01 · Julia Lawall <Julia.Lawall@inria.fr>
• WARM1d [PATCH] selftests/cgroup: test_zswap: skip test_no_kmem_bypass if debugfs is unavailable
  2026-08-01 · Wilson Felipe Pereira <hidden>
• WARM2d [PATCH v2] selftests/cgroup: add user_usec sanity check in test_cpucg_nice
  2026-07-30 · Shaojie Sun <hidden>
• WARM2d [PATCH 2/2] selftests/cgroup: write explicit period to cpu.max in max tests
  2026-07-29 · Shaojie Sun <hidden>
• WARM2d [PATCH 1/2] selftests/cgroup: remove unused user_usec read in test_cpucg_nice
  2026-07-29 · Shaojie Sun <hidden>
• WARM2d REVIEWED: 1 (1M) [PATCH v4] Docs/admin-guide/cgroup-v2: document io.latency rotational vs non-rotational behavior
  2026-07-28 · Tao Cui <hidden>
• DORMANTno replies [PATCH v2] selftests/cgroup: add PSI pressure trigger and validation tests
  2026-07-28 · Tao Cui <hidden>
• COOLING7d REVIEWED: 1 (1M) [PATCH v9 3/6] cgroup/dmem: Add reclaim callback for lowering max below current usage
  2026-07-25 · Thomas Hellström <thomas.hellstrom@linux.intel.com>
• COOLING7d REVIEWED: 1 (1M) [PATCH v9 2/6] cgroup/dmem: Introduce struct dmem_cgroup_init for region initialization
  2026-07-25 · Thomas Hellström <thomas.hellstrom@linux.intel.com>
• COOLING8d [PATCH] Docs/admin-guide/cgroup-v2: document hierarchical cpu.max throttling behavior
  2026-07-24 · Shaojie Sun <hidden>
• COOLING11d [PATCH v2] Docs/admin-guide/cgroup-v1/memory: document memsw limit constraints
  2026-07-24 · Shaojie Sun <hidden>
• WARM1d [RFC PATCH v1 2/2] cgroup/misc: Add support for Arm CCA MECIDs
  2026-07-24 · Kohei Enju <hidden>
• COOLING10d [PATCH] selftests/cgroup: add PSI pressure trigger and validation tests
  2026-07-24 · Tao Cui <hidden>
• COOLING9d [PATCH] docs: cgroup-v2: mark memory.pressure and io.pressure as read-write
  2026-07-24 · Tao Cui <hidden>
• COOLING11d [PATCH] Docs/admin-guide/cgroup-v1/memory: document memsw limit constraints
  2026-07-23 · Shaojie Sun <hidden>
• COOLING11d REVIEWED: 1 (1M) [PATCH v8 3/6] cgroup/dmem: Add reclaim callback for lowering max below current usage
  2026-07-23 · Thomas Hellström <thomas.hellstrom@linux.intel.com>
• COOLING11d REVIEWED: 1 (1M) [PATCH v8 2/6] cgroup/dmem: Introduce struct dmem_cgroup_init for region initialization
  2026-07-23 · Thomas Hellström <thomas.hellstrom@linux.intel.com>
• DORMANTno replies [RFC PATCH 3/3] sched/topology: Tear down domains without active domain housekeeping CPUs
  2026-07-22 · Guopeng Zhang <hidden>
• COOLING14d REVIEWED: 1 (1M) [PATCH v7 1/6] cgroup/dmem: Add queries for protection values
  2026-07-21 · Natalie Vock <natalie.vock@gmx.de>
• COOLING14d [PATCH v7 2/6] cgroup,cgroup/dmem: Add (dmem_)cgroup_common_ancestor helper
  2026-07-21 · Natalie Vock <natalie.vock@gmx.de>
• COOLING13d [PATCH v2 2/4] selftests/cgroup: add memcg_stat_cross_cpu correctness test for flush
  2026-07-21 · Ziyang Men <hidden>
• COOLING8d [PATCH v2 1/3] umh, treewide: Explicitly include linux/umh.h where needed
  2026-07-21 · Petr Pavlu <petr.pavlu@suse.com>
• COOLING11d [PATCH v5 06/36] cpuset: exclude private nodes from cpuset.mems (default-open)
  2026-07-20 · Gregory Price <gourry@gourry.net>
• COOLING14d [PATCH v4] security: Expand task_setscheduler LSM hook
  2026-07-20 · Aaron Tomlin <atomlin@atomlin.com>
• COOLING13d [PATCH v3] Documentation: add SPDX license identifiers to RST files
  2026-07-18 · Yahya Toubali <hidden>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE169d REVIEWED: 1 (0M) [PATCH AUTOSEL 6.19-6.18] cgroup/cpuset: Don't fail cpuset.cpus change in v2
  2026-02-14 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• STALE153d REVIEWED: 1 (0M) [PATCH] cgroup: Don't expose dead tasks in cgroup
  2026-03-02 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 1 Tested-by
• STALE152d REVIEWED: 4 (4M) [PATCH] cgroup/cpuset: Call rebuild_sched_domains() directly in hotplug
  2026-03-04 · Waiman Long <longman@redhat.com> · 1 Tested-by
• STALE151d REVIEWED: 5 (4M) [PATCH v2] cgroup/cpuset: Call rebuild_sched_domains() directly in hotplug
  2026-03-05 · Waiman Long <longman@redhat.com> · 1 Reviewed-by, 1 Tested-by
• STALE151d REVIEWED: 1 (0M) [PATCH v2] cgroup: Don't expose dead tasks in cgroup
  2026-03-06 · Sebastian Andrzej Siewior <bigeasy@linutronix.de> · 1 Tested-by
• STALE118d REVIEWED: 2 (0M) [PATCH] cgroup: add cpu.stat.percpu for per-CPU cgroup stats
  2026-04-07 · Willy Barro Raffel <hidden> · 2 Reviewed-by
• STALE109d REVIEWED: 1 (0M) [PATCH] sched/psi: fix race between file release and pressure write
  2026-04-10 · Edward Adam Davis <hidden> · 1 Tested-by
• STALE109d REVIEWED: 1 (0M) [PATCH v2] sched/psi: fix race between file release and pressure write
  2026-04-10 · Edward Adam Davis <hidden> · 1 Tested-by
• STALE109d REVIEWED: 1 (0M) [PATCH v3] sched/psi: fix race between file release and pressure write
  2026-04-12 · Edward Adam Davis <hidden> · 1 Tested-by
• STALE109d REVIEWED: 1 (0M) [PATCH v4] sched/psi: fix race between file release and pressure write
  2026-04-13 · Edward Adam Davis <hidden> · 1 Tested-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE179d [PATCH v7 1/2] mm/vmscan: fix demotion targets checks in reclaim/demotion
  2026-01-08 · Bing Jiao <hidden>
• STALE201d [RFC PATCH v3 2/8] mm: constify oom_control, scan_control, and alloc_context nodemask
  2026-01-08 · Gregory Price <gourry@gourry.net>
• DORMANTno replies [PATCH] cpuset: replace direct lockdep_assert_held() with lockdep_assert_cpuset_lock_held()
  2026-01-12 · Zhao Mengmeng <hidden>
• DORMANTno replies [PATCH v2] Documentation: Fix typos and grammatical errors
  2026-01-12 · Nauman Sabir <hidden>
• STALE195d [RFC PATCH 3/3] docs/cgroup: document memory.lru_gen interface
  2026-01-21 · Jiayuan Chen <jiayuan.chen@linux.dev>
• STALE188d [PATCH 12/33] cpuset: Provide lockdep check for cpuset lock held
  2026-01-25 · Frederic Weisbecker <frederic@kernel.org>
• STALE188d [PATCH 19/33] cpuset: Propagate cpuset isolation update to timers through housekeeping
  2026-01-25 · Frederic Weisbecker <frederic@kernel.org>
• STALE184d [PATCH -next 2/3] cgroup/dmem: avoid rcu warning when unregister region
  2026-01-31 · Chen Ridong <hidden>
• STALE184d [PATCH -next 3/3] cgroup/dmem: avoid pool UAF
  2026-01-31 · Chen Ridong <hidden>
• STALE183d [PATCH -next v2 3/4] cgroup/dmem: avoid pool UAF
  2026-02-02 · Chen Ridong <hidden>