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scsi: hpsa: use local workqueues instead of system workqueues

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[ Upstream commit 0119208885 ]

Avoid system stalls by switching to local workqueue.

Reviewed-by: Justin Lindley <justin.lindley@microsemi.com>
Reviewed-by: David Carroll <david.carroll@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: 9c9ff300e0 ("scsi: hpsa: Fix possible memory leak in hpsa_init_one()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Don Brace 2019-05-07 13:32:07 -05:00 committed by Greg Kroah-Hartman
parent 7340ca9f78
commit b62e7453a9
2 changed files with 20 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/scsi/hpsa.c
View File

@ -8133,6 +8133,11 @@ static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
destroy_workqueue(h->rescan_ctlr_wq);
h->rescan_ctlr_wq = NULL;
}
if (h->monitor_ctlr_wq) {
destroy_workqueue(h->monitor_ctlr_wq);
h->monitor_ctlr_wq = NULL;
}
kfree(h); /* init_one 1 */
}
@ -8481,8 +8486,8 @@ static void hpsa_event_monitor_worker(struct work_struct *work)
spin_lock_irqsave(&h->lock, flags);
if (!h->remove_in_progress)
schedule_delayed_work(&h->event_monitor_work,
HPSA_EVENT_MONITOR_INTERVAL);
queue_delayed_work(h->monitor_ctlr_wq, &h->event_monitor_work,
HPSA_EVENT_MONITOR_INTERVAL);
spin_unlock_irqrestore(&h->lock, flags);
}
@ -8527,7 +8532,7 @@ static void hpsa_monitor_ctlr_worker(struct work_struct *work)
spin_lock_irqsave(&h->lock, flags);
if (!h->remove_in_progress)
schedule_delayed_work(&h->monitor_ctlr_work,
queue_delayed_work(h->monitor_ctlr_wq, &h->monitor_ctlr_work,
h->heartbeat_sample_interval);
spin_unlock_irqrestore(&h->lock, flags);
}
@ -8695,6 +8700,12 @@ reinit_after_soft_reset:
goto clean7; /* aer/h */
}
h->monitor_ctlr_wq = hpsa_create_controller_wq(h, "monitor");
if (!h->monitor_ctlr_wq) {
rc = -ENOMEM;
goto clean7;
}
/*
* At this point, the controller is ready to take commands.
* Now, if reset_devices and the hard reset didn't work, try
@ -8826,6 +8837,10 @@ clean1: /* wq/aer/h */
destroy_workqueue(h->rescan_ctlr_wq);
h->rescan_ctlr_wq = NULL;
}
if (h->monitor_ctlr_wq) {
destroy_workqueue(h->monitor_ctlr_wq);
h->monitor_ctlr_wq = NULL;
}
kfree(h);
return rc;
}
@ -8973,6 +8988,7 @@ static void hpsa_remove_one(struct pci_dev *pdev)
cancel_delayed_work_sync(&h->event_monitor_work);
destroy_workqueue(h->rescan_ctlr_wq);
destroy_workqueue(h->resubmit_wq);
destroy_workqueue(h->monitor_ctlr_wq);
hpsa_delete_sas_host(h);

1
drivers/scsi/hpsa.h
View File

@ -300,6 +300,7 @@ struct ctlr_info {
int needs_abort_tags_swizzled;
struct workqueue_struct *resubmit_wq;
struct workqueue_struct *rescan_ctlr_wq;
struct workqueue_struct *monitor_ctlr_wq;
atomic_t abort_cmds_available;
wait_queue_head_t event_sync_wait_queue;
struct mutex reset_mutex;