On 01/23/2015 11:45 PM, Don Brace wrote:
> Suggested-by: Tomas Henzl <the...@redhat.com>
Yes i have suggested something but it was something different
I wanted to move to his own workqueue the hpsa_monitor_ctlr_worker
and exactly that is what you have left out in this patch.
I'm going to post a patch on top of this series, please review.
Tomas
> Reviewed-by: Webb Scales <web...@hp.com>
> Reviewed-by: Kevin Barnett <kevin.barn...@pmcs.com>
> Signed-off-by: Don Brace <don.br...@pmcs.com>
> ---
> drivers/scsi/hpsa.c | 68
> +++++++++++++++++++++++++++++++++++++++++----------
> drivers/scsi/hpsa.h | 2 ++
> 2 files changed, 56 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
> index 15ef65c..95d581c 100644
> --- a/drivers/scsi/hpsa.c
> +++ b/drivers/scsi/hpsa.c
> @@ -6787,14 +6787,14 @@ static int hpsa_offline_devices_ready(struct
> ctlr_info *h)
> return 0;
> }
>
> -
> -static void hpsa_monitor_ctlr_worker(struct work_struct *work)
> +static void hpsa_rescan_ctlr_worker(struct work_struct *work)
> {
> unsigned long flags;
> struct ctlr_info *h = container_of(to_delayed_work(work),
> - struct ctlr_info, monitor_ctlr_work);
> - detect_controller_lockup(h);
> - if (lockup_detected(h))
> + struct ctlr_info, rescan_ctlr_work);
> +
> +
> + if (h->remove_in_progress)
> return;
>
> if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
> @@ -6803,17 +6803,44 @@ static void hpsa_monitor_ctlr_worker(struct
> work_struct *work)
> hpsa_scan_start(h->scsi_host);
> scsi_host_put(h->scsi_host);
> }
> -
> spin_lock_irqsave(&h->lock, flags);
> - if (h->remove_in_progress) {
> - spin_unlock_irqrestore(&h->lock, flags);
> + if (!h->remove_in_progress)
> + queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
> + h->heartbeat_sample_interval);
> + spin_unlock_irqrestore(&h->lock, flags);
> +}
> +
> +static void hpsa_monitor_ctlr_worker(struct work_struct *work)
> +{
> + unsigned long flags;
> + struct ctlr_info *h = container_of(to_delayed_work(work),
> + struct ctlr_info, monitor_ctlr_work);
> +
> + detect_controller_lockup(h);
> + if (lockup_detected(h))
> return;
> - }
> - schedule_delayed_work(&h->monitor_ctlr_work,
> +
> + spin_lock_irqsave(&h->lock, flags);
> + if (!h->remove_in_progress)
> + schedule_delayed_work(&h->monitor_ctlr_work,
> h->heartbeat_sample_interval);
> spin_unlock_irqrestore(&h->lock, flags);
> }
>
> +static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info
> *h,
> + char *name)
> +{
> + struct workqueue_struct *wq = NULL;
> + char wq_name[20];
> +
> + snprintf(wq_name, sizeof(wq_name), "%s_%d_hpsa", name, h->ctlr);
> + wq = alloc_ordered_workqueue(wq_name, 0);
> + if (!wq)
> + dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
> +
> + return wq;
> +}
> +
> static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id
> *ent)
> {
> int dac, rc;
> @@ -6856,12 +6883,18 @@ reinit_after_soft_reset:
> spin_lock_init(&h->scan_lock);
> atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
>
> - h->resubmit_wq = alloc_workqueue("hpsa", WQ_MEM_RECLAIM, 0);
> + h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
> + if (!h->rescan_ctlr_wq) {
> + rc = -ENOMEM;
> + goto clean1;
> + }
> +
> + h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
> if (!h->resubmit_wq) {
> - dev_err(&h->pdev->dev, "Failed to allocate work queue\n");
> rc = -ENOMEM;
> goto clean1;
> }
> +
> /* Allocate and clear per-cpu variable lockup_detected */
> h->lockup_detected = alloc_percpu(u32);
> if (!h->lockup_detected) {
> @@ -6985,6 +7018,9 @@ reinit_after_soft_reset:
> INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
> schedule_delayed_work(&h->monitor_ctlr_work,
> h->heartbeat_sample_interval);
> + INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
> + queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
> + h->heartbeat_sample_interval);
> return 0;
>
> clean4:
> @@ -6996,6 +7032,8 @@ clean2:
> clean1:
> if (h->resubmit_wq)
> destroy_workqueue(h->resubmit_wq);
> + if (h->rescan_ctlr_wq)
> + destroy_workqueue(h->rescan_ctlr_wq);
> if (h->lockup_detected)
> free_percpu(h->lockup_detected);
> kfree(h);
> @@ -7069,11 +7107,13 @@ static void hpsa_remove_one(struct pci_dev *pdev)
> /* Get rid of any controller monitoring work items */
> spin_lock_irqsave(&h->lock, flags);
> h->remove_in_progress = 1;
> - cancel_delayed_work(&h->monitor_ctlr_work);
> spin_unlock_irqrestore(&h->lock, flags);
> + cancel_delayed_work_sync(&h->monitor_ctlr_work);
> + cancel_delayed_work_sync(&h->rescan_ctlr_work);
> + destroy_workqueue(h->rescan_ctlr_wq);
> + destroy_workqueue(h->resubmit_wq);
> hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */
> hpsa_shutdown(pdev);
> - destroy_workqueue(h->resubmit_wq);
> iounmap(h->vaddr);
> iounmap(h->transtable);
> iounmap(h->cfgtable);
> diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
> index 62c50c3..6577130 100644
> --- a/drivers/scsi/hpsa.h
> +++ b/drivers/scsi/hpsa.h
> @@ -207,6 +207,7 @@ struct ctlr_info {
> atomic_t firmware_flash_in_progress;
> u32 __percpu *lockup_detected;
> struct delayed_work monitor_ctlr_work;
> + struct delayed_work rescan_ctlr_work;
> int remove_in_progress;
> /* Address of h->q[x] is passed to intr handler to know which queue */
> u8 q[MAX_REPLY_QUEUES];
> @@ -251,6 +252,7 @@ struct ctlr_info {
> int acciopath_status;
> int raid_offload_debug;
> struct workqueue_struct *resubmit_wq;
> + struct workqueue_struct *rescan_ctlr_wq;
> };
>
> struct offline_device_entry {
>
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