[GIT PULL] workqueue changes for v7.1

[Tejun Heo <tj@kernel.org>]

Hello,

The following changes since commit 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f:

  Linux 7.0-rc1 (2026-02-22 13:18:59 -0800)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git tags/wq-for-7.1

for you to fetch changes up to 76af54648899abbd6b449c035583e47fd407078a:

  workqueue: validate cpumask_first() result in llc_populate_cpu_shard_id() (2026-04-13 06:15:26 -1000)

----------------------------------------------------------------
workqueue: Changes for v7.1

- New default WQ_AFFN_CACHE_SHARD affinity scope subdivides LLCs into
  smaller shards to improve scalability on machines with many CPUs per
  LLC.

- Misc: system_dfl_long_wq for long unbound works, devm_alloc_workqueue()
  for device-managed allocation, sysfs exposure for ordered workqueues and
  the EFI workqueue, removal of HK_TYPE_WQ from wq_unbound_cpumask, and
  various small fixes.

----------------------------------------------------------------
Arnd Bergmann (1):
      workqueue: avoid unguarded 64-bit division

Breno Leitao (12):
      tools/workqueue/wq_dump.py: remove backslash separator from node_nr/max_active header
      tools/workqueue/wq_dump.py: fix column alignment in node_nr/max_active section
      tools/workqueue/wq_dump.py: add NODE prefix to all node columns
      workqueue: fix parse_affn_scope() prefix matching bug
      workqueue: unlink pwqs from wq->pwqs list in alloc_and_link_pwqs() error path
      workqueue: fix typo in WQ_AFFN_SMT comment
      workqueue: add WQ_AFFN_CACHE_SHARD affinity scope
      workqueue: set WQ_AFFN_CACHE_SHARD as the default affinity scope
      tools/workqueue: add CACHE_SHARD support to wq_dump.py
      workqueue: add test_workqueue benchmark module
      docs: workqueue: document WQ_AFFN_CACHE_SHARD affinity scope
      workqueue: validate cpumask_first() result in llc_populate_cpu_shard_id()

Krzysztof Kozlowski (1):
      workqueue: devres: Add device-managed allocate workqueue

Mallesh Koujalagi (1):
      workqueue: Update documentation as per system_percpu_wq naming

Maninder Singh (1):
      workqueue: use NR_STD_WORKER_POOLS instead of hardcoded value

Marco Crivellari (1):
      workqueue: Add system_dfl_long_wq for long unbound works

Sebastian Andrzej Siewior (2):
      workqueue: Allow to expose ordered workqueues via sysfs
      efi: Allow to expose the workqueue via sysfs

Tejun Heo (2):
      Merge branch 'for-7.1-devm-alloc-wq' into for-7.1
      workqueue: Remove NULL wq WARN in __queue_delayed_work()

Waiman Long (1):
      workqueue: Remove HK_TYPE_WQ from affecting wq_unbound_cpumask

 Documentation/admin-guide/kernel-parameters.txt  |   3 +-
 Documentation/core-api/workqueue.rst             |  14 +-
 Documentation/driver-api/driver-model/devres.rst |   4 +
 drivers/firmware/efi/efi.c                       |   2 +-
 include/linux/workqueue.h                        |  47 +++-
 kernel/workqueue.c                               | 285 ++++++++++++++++++++--
 lib/Kconfig.debug                                |  10 +
 lib/Makefile                                     |   1 +
 lib/test_workqueue.c                             | 294 +++++++++++++++++++++++
 tools/workqueue/wq_dump.py                       |  20 +-
 10 files changed, 629 insertions(+), 51 deletions(-)
 create mode 100644 lib/test_workqueue.c

--
tejun