[PATCH] cxl/pci: replace use of system_wq with system_percpu_wq
From: Marco Crivellari
Date: Thu Oct 30 2025 - 12:38:45 EST
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 consistency cannot be addressed without refactoring the API.
system_wq should be the per-cpu workqueue, yet in this name nothing makes
that clear, so replace system_wq with system_percpu_wq.
The old wq (system_wq) will be kept for a few release cycles.
Suggested-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Marco Crivellari <marco.crivellari@xxxxxxxx>
---
drivers/cxl/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index bd100ac31672..0be4e508affe 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -136,7 +136,7 @@ static irqreturn_t cxl_pci_mbox_irq(int irq, void *id)
if (opcode == CXL_MBOX_OP_SANITIZE) {
mutex_lock(&cxl_mbox->mbox_mutex);
if (mds->security.sanitize_node)
- mod_delayed_work(system_wq, &mds->security.poll_dwork, 0);
+ mod_delayed_work(system_percpu_wq, &mds->security.poll_dwork, 0);
mutex_unlock(&cxl_mbox->mbox_mutex);
} else {
/* short-circuit the wait in __cxl_pci_mbox_send_cmd() */
--
2.51.0