Merge tag 'wq-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

Pull workqueue updates from Tejun Heo:

 - Prepare for defaulting to unbound workqueue. A separate branch was
   created to ease pulling in from other trees but none of the
   conversions have landed yet

 - Memory allocation profiling support added

 - Misc changes

* tag 'wq-for-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: Use atomic_try_cmpxchg_relaxed() in tryinc_node_nr_active()
  workqueue: Remove unused work_on_cpu_safe
  workqueue: Add new WQ_PERCPU flag
  workqueue: Add system_percpu_wq and system_dfl_wq
  workqueue: Basic memory allocation profiling support
  workqueue: fix opencoded cpumask_next_and_wrap() in wq_select_unbound_cpu()

1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/core-api/workqueue.rst b/Documentation/core-api/workqueue.rst
index e295835fc116..165ca73e8351 100644
--- a/Documentation/core-api/workqueue.rst
+++ b/Documentation/core-api/workqueue.rst
@@ -183,6 +183,12 @@ resources, scheduled and executed.
   BH work items cannot sleep. All other features such as delayed queueing,
   flushing and canceling are supported.
 
+``WQ_PERCPU``
+  Work items queued to a per-cpu wq are bound to a specific CPU.
+  This flag is the right choice when cpu locality is important.
+
+  This flag is the complement of ``WQ_UNBOUND``.
+
 ``WQ_UNBOUND``
   Work items queued to an unbound wq are served by the special
   worker-pools which host workers which are not bound to any