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scsi: smartpqi: Add RAID bypass counter
Add a counter to assist in verifying when RAID bypass is being used. Link: https://lore.kernel.org/r/159622930468.30579.13153724465552773544.stgit@brunhilda Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Scott Benesh <scott.benesh@microsemi.com> Reviewed-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
parent
4d15ad3813
commit
8b664fefa3
2 changed files with 54 additions and 24 deletions
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@ -963,6 +963,7 @@ struct pqi_scsi_dev {
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struct list_head delete_list_entry;
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atomic_t scsi_cmds_outstanding;
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atomic_t raid_bypass_cnt;
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};
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/* VPD inquiry pages */
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@ -5377,19 +5377,18 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost,
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!blk_rq_is_passthrough(scmd->request)) {
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rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
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scmd, queue_group);
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if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
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if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) {
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raid_bypassed = true;
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atomic_inc(&device->raid_bypass_cnt);
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}
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}
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if (!raid_bypassed)
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rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
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queue_group);
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rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
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} else {
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if (device->aio_enabled)
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rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
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queue_group);
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rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
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else
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rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
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queue_group);
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rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
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}
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out:
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@ -5867,8 +5866,7 @@ static void pqi_slave_destroy(struct scsi_device *sdev)
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}
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}
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static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
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void __user *arg)
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static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
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{
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struct pci_dev *pci_dev;
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u32 subsystem_vendor;
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@ -5885,8 +5883,7 @@ static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
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pciinfo.dev_fn = pci_dev->devfn;
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subsystem_vendor = pci_dev->subsystem_vendor;
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subsystem_device = pci_dev->subsystem_device;
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pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
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subsystem_vendor;
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pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor;
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if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
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return -EFAULT;
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@ -6295,8 +6292,7 @@ static ssize_t pqi_unique_id_show(struct device *dev,
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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@ -6333,8 +6329,7 @@ static ssize_t pqi_lunid_show(struct device *dev,
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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@ -6369,8 +6364,7 @@ static ssize_t pqi_path_info_show(struct device *dev,
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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@ -6446,9 +6440,8 @@ static ssize_t pqi_sas_address_show(struct device *dev,
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (pqi_is_logical_device(device)) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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if (!device || !pqi_is_device_with_sas_address(device)) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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@ -6473,6 +6466,11 @@ static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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buffer[0] = device->raid_bypass_enabled ? '1' : '0';
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buffer[1] = '\n';
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buffer[2] = '\0';
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@ -6497,6 +6495,10 @@ static ssize_t pqi_raid_level_show(struct device *dev,
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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if (pqi_is_logical_device(device))
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raid_level = pqi_raid_level_to_string(device->raid_level);
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@ -6508,13 +6510,40 @@ static ssize_t pqi_raid_level_show(struct device *dev,
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return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
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}
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static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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struct pqi_ctrl_info *ctrl_info;
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struct scsi_device *sdev;
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struct pqi_scsi_dev *device;
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unsigned long flags;
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int raid_bypass_cnt;
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sdev = to_scsi_device(dev);
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ctrl_info = shost_to_hba(sdev->host);
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return -ENODEV;
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}
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raid_bypass_cnt = atomic_read(&device->raid_bypass_cnt);
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return snprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
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}
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static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
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static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
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static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
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static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
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static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
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pqi_ssd_smart_path_enabled_show, NULL);
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static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL);
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static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
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static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL);
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static struct device_attribute *pqi_sdev_attrs[] = {
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&dev_attr_lunid,
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@ -6523,6 +6552,7 @@ static struct device_attribute *pqi_sdev_attrs[] = {
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&dev_attr_sas_address,
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&dev_attr_ssd_smart_path_enabled,
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&dev_attr_raid_level,
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&dev_attr_raid_bypass_cnt,
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NULL
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};
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@ -8543,8 +8573,7 @@ static int __init pqi_init(void)
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pr_info(DRIVER_NAME "\n");
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pqi_sas_transport_template =
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sas_attach_transport(&pqi_sas_transport_functions);
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pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions);
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if (!pqi_sas_transport_template)
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return -ENODEV;
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