From 3ce419662dd4c9cf8db7869c4972ad51ccdf2ee3 Mon Sep 17 00:00:00 2001 From: Bob Liu Date: Tue, 5 May 2020 09:19:08 +0800 Subject: scsi: iscsi: Register sysfs for iscsi workqueue 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 Signed-off-by: Bob Liu Signed-off-by: Martin K. Petersen --- drivers/scsi/libiscsi.c | 4 +++- drivers/scsi/scsi_transport_iscsi.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 874dd4beed10..e5a64d4f255c 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -2627,7 +2627,9 @@ struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht, if (xmit_can_sleep) { snprintf(ihost->workq_name, sizeof(ihost->workq_name), "iscsi_q_%d", shost->host_no); - ihost->workq = create_singlethread_workqueue(ihost->workq_name); + ihost->workq = alloc_workqueue("%s", + WQ_SYSFS | __WQ_LEGACY | WQ_MEM_RECLAIM | WQ_UNBOUND, + 2, ihost->workq_name); if (!ihost->workq) goto free_host; } diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index b2a803c51288..7bbeb563ab8c 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -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; -- cgit v1.2.3