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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-07-31 15:40:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-07-31 15:40:22 -0700 |
| commit | af5b2619a89d4f1261ddfc310ffd5d1e630f8fdc (patch) | |
| tree | ee01571fd1788e3cf1f18df1029b25fd4d2678cd /Documentation | |
| parent | beace86e61e465dba204a268ab3f3377153a4973 (diff) | |
| parent | df316ab3d4440177e322a2847969d356c29b0eef (diff) | |
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()
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/core-api/workqueue.rst | 6 |
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 |