diff options
| author | Marco Crivellari <marco.crivellari@suse.com> | 2025-09-05 11:13:23 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2025-09-05 07:19:09 -1000 |
| commit | f6cfa602d2ba7e5ca9dc65ec4141521aca80bda2 (patch) | |
| tree | ed38bc4fd633e33bf54f3d71478f331e63e60155 /kernel/workqueue.c | |
| parent | ad7c7f4b9c6c2950778e5bd305392a333de73912 (diff) | |
workqueue: replace use of system_unbound_wq with system_dfl_wq
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistentcy cannot be addressed without refactoring the API.
system_unbound_wq should be the default workqueue so as not to enforce
locality constraints for random work whenever it's not required.
Adding system_dfl_wq to encourage its use when unbound work should be used.
queue_work() / queue_delayed_work() / mod_delayed_work() will now use the
new unbound wq: whether the user still use the old wq a warn will be
printed along with a wq redirect to the new one.
The old system_unbound_wq will be kept for a few release cycles.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 59faf857ee4f..2888f4399acd 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -2932,7 +2932,7 @@ static void idle_worker_timeout(struct timer_list *t) raw_spin_unlock_irq(&pool->lock); if (do_cull) - queue_work(system_unbound_wq, &pool->idle_cull_work); + queue_work(system_dfl_wq, &pool->idle_cull_work); } /** |