linux-kernel - [GIT PULL] cgroup changes for v6.19

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Message-ID: <58579714c3f54951dddf5af185da0515@kernel.org>
Date: Mon, 01 Dec 2025 09:16:13 -1000
From: Tejun Heo <tj@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
 Johannes Weiner <hannes@...xchg.org>, Michal Koutný <mkoutny@...e.com>,
 Waiman Long <longman@...hat.com>
Subject: [GIT PULL] cgroup changes for v6.19

Hi Linus,

The following changes since commit 211ddde0823f1442e4ad052a2f30f050145ccada:

  Linux 6.18-rc2 (2025-10-19 15:19:16 -1000)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git tags/cgroup-for-6.19

for you to fetch changes up to b1bcaed1e39a9e0dfbe324a15d2ca4253deda316:

  cpuset: Treat cpusets in attaching as populated (2025-11-20 16:25:26 -1000)

----------------------------------------------------------------
cgroup: Changes for v6.19

- Defer task cgroup unlink until after the dying task's final context switch
  so that controllers see the cgroup properly populated until the task is
  truly gone.

- cpuset cleanups and simplifications. Enforce that domain isolated CPUs
  stay in root or isolated partitions and fail if isolated+nohz_full would
  leave no housekeeping CPU. Fix sched/deadline root domain handling during
  CPU hot-unplug and race for tasks in attaching cpusets.

- Misc fixes including memory reclaim protection documentation and selftest
  KTAP conformance.

----------------------------------------------------------------
Bert Karwatzki (1):
      cgroup: include missing header for struct irq_work

Chen Ridong (4):
      cpuset: simplify node setting on error
      cpuset: remove global remote_children list
      cpuset: remove need_rebuild_sched_domains
      cpuset: Treat cpusets in attaching as populated

Gabriele Monaco (1):
      cgroup/cpuset: Rename update_unbound_workqueue_cpumask() to update_isolation_cpumasks()

Guopeng Zhang (1):
      selftests/cgroup: conform test to KTAP format output

Michal Koutný (3):
      docs: cgroup: Explain reclaim protection target
      docs: cgroup: Note about sibling relative reclaim protection
      docs: cgroup: No special handling of unpopulated memcgs

Pingfan Liu (2):
      cgroup/cpuset: Introduce cpuset_cpus_allowed_locked()
      sched/deadline: Walk up cpuset hierarchy to decide root domain when hot-unplug

Tejun Heo (4):
      cgroup: Rename cgroup lifecycle hooks to cgroup_task_*()
      cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free()
      cgroup: Defer task cgroup unlink until after the task is done switching out
      cgroup: Fix sleeping from invalid context warning on PREEMPT_RT

Waiman Long (5):
      cgroup/cpuset: Don't track # of local child partitions
      cgroup/cpuset: Fail if isolated and nohz_full don't leave any housekeeping
      cgroup/cpuset: Move up prstate_housekeeping_conflict() helper
      cgroup/cpuset: Ensure domain isolated CPUs stay in root or isolated partition
      cgroup/cpuset: Globally track isolated_cpus update

 Documentation/admin-guide/cgroup-v2.rst          |  31 +-
 include/linux/cgroup.h                           |  14 +-
 include/linux/cpuset.h                           |   9 +-
 include/linux/sched.h                            |   5 +-
 kernel/cgroup/cgroup.c                           |  91 +++++-
 kernel/cgroup/cpuset-internal.h                  |  13 +-
 kernel/cgroup/cpuset.c                           | 356 ++++++++++++++---------
 kernel/exit.c                                    |   4 +-
 kernel/fork.c                                    |   2 +-
 kernel/sched/autogroup.c                         |   4 +-
 kernel/sched/core.c                              |   2 +
 kernel/sched/deadline.c                          |  54 +++-
 tools/testing/selftests/cgroup/test_core.c       |   7 +-
 tools/testing/selftests/cgroup/test_cpu.c        |   7 +-
 tools/testing/selftests/cgroup/test_cpuset.c     |   7 +-
 tools/testing/selftests/cgroup/test_freezer.c    |   7 +-
 tools/testing/selftests/cgroup/test_kill.c       |   7 +-
 tools/testing/selftests/cgroup/test_kmem.c       |   7 +-
 tools/testing/selftests/cgroup/test_memcontrol.c |   7 +-
 tools/testing/selftests/cgroup/test_zswap.c      |   7 +-
 20 files changed, 435 insertions(+), 206 deletions(-)

Thanks.
--
tejun