On 01/27/2015 05:55 PM, Tomas Henzl wrote:
> 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
I see it now, you have in this patch split the former hpsa_monitor_ctlr_worker
into two worker functions functions now run independently in two different
workqueues. In this case my already posted patch is not needed.
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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