[PATCH v2] thermal: core: Add WQ_UNBOUND to alloc_workqueue users
From: Marco Crivellari
Date: Thu May 14 2026 - 10:37:12 EST
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag")
The refactoring is going to alter the default behavior of
alloc_workqueue() to be unbound by default.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU. For more details see the Link tag below.
This workqueue has no benefits being per-CPU, so make it unbound using
explicitly WQ_UNBOUND.
Link: https://lore.kernel.org/all/20250221112003.1dSuoGyc@xxxxxxxxxxxxx/
Suggested-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Marco Crivellari <marco.crivellari@xxxxxxxx>
---
Changes in v2:
- "thermal_events" workqueue has more benefits being unbound, so instead
of WQ_PERCPU, use WQ_UNBOUND.
Link to v1: https://lore.kernel.org/all/20260514132901.275477-1-marco.crivellari@xxxxxxxx/
drivers/thermal/thermal_core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 2f4e2dc46b8f..1ac4262dafbc 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1889,7 +1889,8 @@ static int __init thermal_init(void)
if (result)
goto error;
- thermal_wq = alloc_workqueue("thermal_events", WQ_POWER_EFFICIENT, 0);
+ thermal_wq = alloc_workqueue("thermal_events",
+ WQ_POWER_EFFICIENT | WQ_UNBOUND, 0);
if (!thermal_wq) {
result = -ENOMEM;
goto unregister_netlink;
--
2.54.0