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scsi: iscsi: Register sysfs for iscsi workqueue

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This patch enables setting cpu affinity through "cpumask" for iscsi
workqueues (iscsi_q_xx and iscsi_eh), so as to get performance isolation.

The max number of active worker was changed form 1 to 2, because "cpumask"
of ordered workqueue isn't allowed to change.

Link: https://lore.kernel.org/r/20200505011908.15538-1-bob.liu@oracle.com
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bob Liu
2020-05-05 09:19:08 +08:00
committed by Martin K. Petersen
parent b6ff8ca733
commit 3ce419662d
2 changed files with 6 additions and 2 deletions
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4
drivers/scsi/scsi_transport_iscsi.c
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@@ -4728,7 +4728,9 @@ static __init int iscsi_transport_init(void)
goto unregister_flashnode_bus;
}
iscsi_eh_timer_workq = create_singlethread_workqueue("iscsi_eh");
iscsi_eh_timer_workq = alloc_workqueue("%s",
WQ_SYSFS | __WQ_LEGACY | WQ_MEM_RECLAIM | WQ_UNBOUND,
2, "iscsi_eh");
if (!iscsi_eh_timer_workq) {
err = -ENOMEM;
goto release_nls;