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_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.
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>
---
drivers/scsi/qla2xxx/qla_os.c | 2 +-
drivers/scsi/scsi_transport_iscsi.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 5ffd94586652..d48d8671c18a 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -5280,7 +5280,7 @@ void qla24xx_sched_upd_fcport(fc_port_t *fcport)
qla2x00_set_fcport_disc_state(fcport, DSC_UPD_FCPORT);
spin_unlock_irqrestore(&fcport->vha->work_lock, flags);
- queue_work(system_unbound_wq, &fcport->reg_work);
+ queue_work(system_dfl_wq, &fcport->reg_work);
}
static
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 743b4c792ceb..ed21c032bbc4 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -3961,7 +3961,7 @@ iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
list_del_init(&session->sess_list);
spin_unlock_irqrestore(&sesslock, flags);
- queue_work(system_unbound_wq, &session->destroy_work);
+ queue_work(system_dfl_wq, &session->destroy_work);
}
break;
case ISCSI_UEVENT_UNBIND_SESSION:
--
2.51.0