Commit 919a295a authored Jul 03, 2020 by Bob Liu Committed by Martin K. Petersen Jul 08, 2020

scsi: iscsi: Register sysfs for workqueue iscsi_destroy

Register sysfs for workqueue iscsi_destroy so that users can set CPU
affinity through "cpumask" for this workqueue to get better isolation in
cloud multi-tenant scenario.

This patch unfolded create_singlethread_workqueue(), added WQ_SYSFS and
drop __WQ_ORDERED_EXPLICIT since __WQ_ORDERED_EXPLICIT workqueue isn't
allowed to change "cpumask".

Link: https://lore.kernel.org/r/20200703051603.1473-1-bob.liu@oracle.com


Suggested-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent 639341bf

drivers/scsi/scsi_transport_iscsi.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -4765,7 +4765,9 @@ static __init int iscsi_transport_init(void)
		goto release_nls;
		}

		iscsi_destroy_workq = create_singlethread_workqueue("iscsi_destroy");
		iscsi_destroy_workq = alloc_workqueue("%s",
		WQ_SYSFS \| __WQ_LEGACY \| WQ_MEM_RECLAIM \| WQ_UNBOUND,
		1, "iscsi_destroy");
		if (!iscsi_destroy_workq) {
		err = -ENOMEM;
		goto destroy_wq;

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