This patch enable setting cpu affinity through "cpumask" for scsi workqueues
(scsi_wq_* and scsi_tmf_*), so as to get better isolation.
The max number of active worker was changed form 1 to 2, since "cpumask" of
ordered workqueue isn't allowed to change.
__WQ_LEGACY was left because of
23d11a5(workqueue: skip flush dependency checks for legacy workqueues)
Signed-off-by: Bob Liu <bob.liu@xxxxxxxxxx>
---
drivers/scsi/hosts.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 1d669e4..aa48142 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -272,8 +272,10 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev,
if (shost->transportt->create_work_queue) {
snprintf(shost->work_q_name, sizeof(shost->work_q_name),
"scsi_wq_%d", shost->host_no);
- shost->work_q = create_singlethread_workqueue(
- shost->work_q_name);
+ shost->work_q = alloc_workqueue("%s",
+ WQ_SYSFS | __WQ_LEGACY | WQ_MEM_RECLAIM | WQ_UNBOUND,
+ 2, shost->work_q_name);
+
if (!shost->work_q) {
error = -EINVAL;
goto out_free_shost_data;
@@ -487,8 +489,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
}
shost->tmf_work_q = alloc_workqueue("scsi_tmf_%d",
- WQ_UNBOUND | WQ_MEM_RECLAIM,
- 1, shost->host_no);
+ WQ_SYSFS | WQ_UNBOUND | WQ_MEM_RECLAIM, 2, shost->host_no);
if (!shost->tmf_work_q) {
shost_printk(KERN_WARNING, shost,
"failed to create tmf workq\n");
--
2.9.5
