| /* |
| * zfcp device driver |
| * |
| * sysfs attributes. |
| * |
| * Copyright IBM Corp. 2008, 2010 |
| */ |
| |
| #define KMSG_COMPONENT "zfcp" |
| #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
| |
| #include <linux/slab.h> |
| #include "zfcp_ext.h" |
| |
| #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \ |
| struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\ |
| _show, _store) |
| #define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \ |
| static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ |
| struct device_attribute *at,\ |
| char *buf) \ |
| { \ |
| struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \ |
| \ |
| return sprintf(buf, _format, _value); \ |
| } \ |
| static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ |
| zfcp_sysfs_##_feat##_##_name##_show, NULL); |
| |
| #define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \ |
| static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \ |
| struct device_attribute *at,\ |
| char *buf) \ |
| { \ |
| return sprintf(buf, _format, _value); \ |
| } \ |
| static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \ |
| zfcp_sysfs_##_feat##_##_name##_show, NULL); |
| |
| #define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \ |
| static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ |
| struct device_attribute *at,\ |
| char *buf) \ |
| { \ |
| struct ccw_device *cdev = to_ccwdev(dev); \ |
| struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \ |
| int i; \ |
| \ |
| if (!adapter) \ |
| return -ENODEV; \ |
| \ |
| i = sprintf(buf, _format, _value); \ |
| zfcp_ccw_adapter_put(adapter); \ |
| return i; \ |
| } \ |
| static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \ |
| zfcp_sysfs_adapter_##_name##_show, NULL); |
| |
| ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); |
| ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n", |
| (unsigned long long) adapter->peer_wwnn); |
| ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n", |
| (unsigned long long) adapter->peer_wwpn); |
| ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); |
| ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version); |
| ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); |
| ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version); |
| ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) & |
| ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
| |
| ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n", |
| atomic_read(&port->status)); |
| ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n", |
| (atomic_read(&port->status) & |
| ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
| ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n", |
| (atomic_read(&port->status) & |
| ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); |
| |
| ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n", |
| zfcp_unit_sdev_status(unit)); |
| ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n", |
| (zfcp_unit_sdev_status(unit) & |
| ZFCP_STATUS_COMMON_ERP_INUSE) != 0); |
| ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n", |
| (zfcp_unit_sdev_status(unit) & |
| ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0); |
| ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0); |
| ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0); |
| |
| static ssize_t zfcp_sysfs_port_failed_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
| |
| if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) |
| return sprintf(buf, "1\n"); |
| |
| return sprintf(buf, "0\n"); |
| } |
| |
| static ssize_t zfcp_sysfs_port_failed_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
| unsigned long val; |
| |
| if (kstrtoul(buf, 0, &val) || val != 0) |
| return -EINVAL; |
| |
| zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING); |
| zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2"); |
| zfcp_erp_wait(port->adapter); |
| |
| return count; |
| } |
| static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO, |
| zfcp_sysfs_port_failed_show, |
| zfcp_sysfs_port_failed_store); |
| |
| static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); |
| struct scsi_device *sdev; |
| unsigned int status, failed = 1; |
| |
| sdev = zfcp_unit_sdev(unit); |
| if (sdev) { |
| status = atomic_read(&sdev_to_zfcp(sdev)->status); |
| failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0; |
| scsi_device_put(sdev); |
| } |
| |
| return sprintf(buf, "%d\n", failed); |
| } |
| |
| static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev); |
| unsigned long val; |
| struct scsi_device *sdev; |
| |
| if (kstrtoul(buf, 0, &val) || val != 0) |
| return -EINVAL; |
| |
| sdev = zfcp_unit_sdev(unit); |
| if (sdev) { |
| zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING); |
| zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, |
| "syufai2"); |
| zfcp_erp_wait(unit->port->adapter); |
| } else |
| zfcp_unit_scsi_scan(unit); |
| |
| return count; |
| } |
| static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO, |
| zfcp_sysfs_unit_failed_show, |
| zfcp_sysfs_unit_failed_store); |
| |
| static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct ccw_device *cdev = to_ccwdev(dev); |
| struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
| int i; |
| |
| if (!adapter) |
| return -ENODEV; |
| |
| if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) |
| i = sprintf(buf, "1\n"); |
| else |
| i = sprintf(buf, "0\n"); |
| |
| zfcp_ccw_adapter_put(adapter); |
| return i; |
| } |
| |
| static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct ccw_device *cdev = to_ccwdev(dev); |
| struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
| unsigned long val; |
| int retval = 0; |
| |
| if (!adapter) |
| return -ENODEV; |
| |
| if (kstrtoul(buf, 0, &val) || val != 0) { |
| retval = -EINVAL; |
| goto out; |
| } |
| |
| zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING); |
| zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, |
| "syafai2"); |
| zfcp_erp_wait(adapter); |
| out: |
| zfcp_ccw_adapter_put(adapter); |
| return retval ? retval : (ssize_t) count; |
| } |
| static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO, |
| zfcp_sysfs_adapter_failed_show, |
| zfcp_sysfs_adapter_failed_store); |
| |
| static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct ccw_device *cdev = to_ccwdev(dev); |
| struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
| |
| if (!adapter) |
| return -ENODEV; |
| |
| /* sync the user-space- with the kernel-invocation of scan_work */ |
| queue_work(adapter->work_queue, &adapter->scan_work); |
| flush_work(&adapter->scan_work); |
| zfcp_ccw_adapter_put(adapter); |
| |
| return (ssize_t) count; |
| } |
| static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL, |
| zfcp_sysfs_port_rescan_store); |
| |
| DEFINE_MUTEX(zfcp_sysfs_port_units_mutex); |
| |
| static ssize_t zfcp_sysfs_port_remove_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct ccw_device *cdev = to_ccwdev(dev); |
| struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); |
| struct zfcp_port *port; |
| u64 wwpn; |
| int retval = -EINVAL; |
| |
| if (!adapter) |
| return -ENODEV; |
| |
| if (kstrtoull(buf, 0, (unsigned long long *) &wwpn)) |
| goto out; |
| |
| port = zfcp_get_port_by_wwpn(adapter, wwpn); |
| if (!port) |
| goto out; |
| else |
| retval = 0; |
| |
| mutex_lock(&zfcp_sysfs_port_units_mutex); |
| if (atomic_read(&port->units) > 0) { |
| retval = -EBUSY; |
| mutex_unlock(&zfcp_sysfs_port_units_mutex); |
| goto out; |
| } |
| /* port is about to be removed, so no more unit_add */ |
| atomic_set(&port->units, -1); |
| mutex_unlock(&zfcp_sysfs_port_units_mutex); |
| |
| write_lock_irq(&adapter->port_list_lock); |
| list_del(&port->list); |
| write_unlock_irq(&adapter->port_list_lock); |
| |
| put_device(&port->dev); |
| |
| zfcp_erp_port_shutdown(port, 0, "syprs_1"); |
| device_unregister(&port->dev); |
| out: |
| zfcp_ccw_adapter_put(adapter); |
| return retval ? retval : (ssize_t) count; |
| } |
| static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL, |
| zfcp_sysfs_port_remove_store); |
| |
| static struct attribute *zfcp_adapter_attrs[] = { |
| &dev_attr_adapter_failed.attr, |
| &dev_attr_adapter_in_recovery.attr, |
| &dev_attr_adapter_port_remove.attr, |
| &dev_attr_adapter_port_rescan.attr, |
| &dev_attr_adapter_peer_wwnn.attr, |
| &dev_attr_adapter_peer_wwpn.attr, |
| &dev_attr_adapter_peer_d_id.attr, |
| &dev_attr_adapter_card_version.attr, |
| &dev_attr_adapter_lic_version.attr, |
| &dev_attr_adapter_status.attr, |
| &dev_attr_adapter_hardware_version.attr, |
| NULL |
| }; |
| |
| struct attribute_group zfcp_sysfs_adapter_attrs = { |
| .attrs = zfcp_adapter_attrs, |
| }; |
| |
| static ssize_t zfcp_sysfs_unit_add_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
| u64 fcp_lun; |
| int retval; |
| |
| if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) |
| return -EINVAL; |
| |
| retval = zfcp_unit_add(port, fcp_lun); |
| if (retval) |
| return retval; |
| |
| return count; |
| } |
| static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store); |
| |
| static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct zfcp_port *port = container_of(dev, struct zfcp_port, dev); |
| u64 fcp_lun; |
| |
| if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun)) |
| return -EINVAL; |
| |
| if (zfcp_unit_remove(port, fcp_lun)) |
| return -EINVAL; |
| |
| return count; |
| } |
| static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store); |
| |
| static struct attribute *zfcp_port_attrs[] = { |
| &dev_attr_unit_add.attr, |
| &dev_attr_unit_remove.attr, |
| &dev_attr_port_failed.attr, |
| &dev_attr_port_in_recovery.attr, |
| &dev_attr_port_status.attr, |
| &dev_attr_port_access_denied.attr, |
| NULL |
| }; |
| static struct attribute_group zfcp_port_attr_group = { |
| .attrs = zfcp_port_attrs, |
| }; |
| const struct attribute_group *zfcp_port_attr_groups[] = { |
| &zfcp_port_attr_group, |
| NULL, |
| }; |
| |
| static struct attribute *zfcp_unit_attrs[] = { |
| &dev_attr_unit_failed.attr, |
| &dev_attr_unit_in_recovery.attr, |
| &dev_attr_unit_status.attr, |
| &dev_attr_unit_access_denied.attr, |
| &dev_attr_unit_access_shared.attr, |
| &dev_attr_unit_access_readonly.attr, |
| NULL |
| }; |
| static struct attribute_group zfcp_unit_attr_group = { |
| .attrs = zfcp_unit_attrs, |
| }; |
| const struct attribute_group *zfcp_unit_attr_groups[] = { |
| &zfcp_unit_attr_group, |
| NULL, |
| }; |
| |
| #define ZFCP_DEFINE_LATENCY_ATTR(_name) \ |
| static ssize_t \ |
| zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \ |
| struct device_attribute *attr, \ |
| char *buf) { \ |
| struct scsi_device *sdev = to_scsi_device(dev); \ |
| struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ |
| struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ |
| struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \ |
| unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \ |
| \ |
| spin_lock_bh(&lat->lock); \ |
| fsum = lat->_name.fabric.sum * adapter->timer_ticks; \ |
| fmin = lat->_name.fabric.min * adapter->timer_ticks; \ |
| fmax = lat->_name.fabric.max * adapter->timer_ticks; \ |
| csum = lat->_name.channel.sum * adapter->timer_ticks; \ |
| cmin = lat->_name.channel.min * adapter->timer_ticks; \ |
| cmax = lat->_name.channel.max * adapter->timer_ticks; \ |
| cc = lat->_name.counter; \ |
| spin_unlock_bh(&lat->lock); \ |
| \ |
| do_div(fsum, 1000); \ |
| do_div(fmin, 1000); \ |
| do_div(fmax, 1000); \ |
| do_div(csum, 1000); \ |
| do_div(cmin, 1000); \ |
| do_div(cmax, 1000); \ |
| \ |
| return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \ |
| fmin, fmax, fsum, cmin, cmax, csum, cc); \ |
| } \ |
| static ssize_t \ |
| zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| struct scsi_device *sdev = to_scsi_device(dev); \ |
| struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ |
| struct zfcp_latencies *lat = &zfcp_sdev->latencies; \ |
| unsigned long flags; \ |
| \ |
| spin_lock_irqsave(&lat->lock, flags); \ |
| lat->_name.fabric.sum = 0; \ |
| lat->_name.fabric.min = 0xFFFFFFFF; \ |
| lat->_name.fabric.max = 0; \ |
| lat->_name.channel.sum = 0; \ |
| lat->_name.channel.min = 0xFFFFFFFF; \ |
| lat->_name.channel.max = 0; \ |
| lat->_name.counter = 0; \ |
| spin_unlock_irqrestore(&lat->lock, flags); \ |
| \ |
| return (ssize_t) count; \ |
| } \ |
| static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO, \ |
| zfcp_sysfs_unit_##_name##_latency_show, \ |
| zfcp_sysfs_unit_##_name##_latency_store); |
| |
| ZFCP_DEFINE_LATENCY_ATTR(read); |
| ZFCP_DEFINE_LATENCY_ATTR(write); |
| ZFCP_DEFINE_LATENCY_ATTR(cmd); |
| |
| #define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \ |
| static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \ |
| struct device_attribute *attr,\ |
| char *buf) \ |
| { \ |
| struct scsi_device *sdev = to_scsi_device(dev); \ |
| struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \ |
| struct zfcp_port *port = zfcp_sdev->port; \ |
| \ |
| return sprintf(buf, _format, _value); \ |
| } \ |
| static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL); |
| |
| ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n", |
| dev_name(&port->adapter->ccw_device->dev)); |
| ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", |
| (unsigned long long) port->wwpn); |
| |
| static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct scsi_device *sdev = to_scsi_device(dev); |
| |
| return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev)); |
| } |
| static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL); |
| |
| struct device_attribute *zfcp_sysfs_sdev_attrs[] = { |
| &dev_attr_fcp_lun, |
| &dev_attr_wwpn, |
| &dev_attr_hba_id, |
| &dev_attr_read_latency, |
| &dev_attr_write_latency, |
| &dev_attr_cmd_latency, |
| NULL |
| }; |
| |
| static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct Scsi_Host *scsi_host = dev_to_shost(dev); |
| struct fsf_qtcb_bottom_port *qtcb_port; |
| struct zfcp_adapter *adapter; |
| int retval; |
| |
| adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
| if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) |
| return -EOPNOTSUPP; |
| |
| qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL); |
| if (!qtcb_port) |
| return -ENOMEM; |
| |
| retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port); |
| if (!retval) |
| retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util, |
| qtcb_port->cb_util, qtcb_port->a_util); |
| kfree(qtcb_port); |
| return retval; |
| } |
| static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL); |
| |
| static int zfcp_sysfs_adapter_ex_config(struct device *dev, |
| struct fsf_statistics_info *stat_inf) |
| { |
| struct Scsi_Host *scsi_host = dev_to_shost(dev); |
| struct fsf_qtcb_bottom_config *qtcb_config; |
| struct zfcp_adapter *adapter; |
| int retval; |
| |
| adapter = (struct zfcp_adapter *) scsi_host->hostdata[0]; |
| if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA)) |
| return -EOPNOTSUPP; |
| |
| qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config), |
| GFP_KERNEL); |
| if (!qtcb_config) |
| return -ENOMEM; |
| |
| retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config); |
| if (!retval) |
| *stat_inf = qtcb_config->stat_info; |
| |
| kfree(qtcb_config); |
| return retval; |
| } |
| |
| #define ZFCP_SHOST_ATTR(_name, _format, _arg...) \ |
| static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \ |
| struct device_attribute *attr,\ |
| char *buf) \ |
| { \ |
| struct fsf_statistics_info stat_info; \ |
| int retval; \ |
| \ |
| retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \ |
| if (retval) \ |
| return retval; \ |
| \ |
| return sprintf(buf, _format, ## _arg); \ |
| } \ |
| static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); |
| |
| ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n", |
| (unsigned long long) stat_info.input_req, |
| (unsigned long long) stat_info.output_req, |
| (unsigned long long) stat_info.control_req); |
| |
| ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n", |
| (unsigned long long) stat_info.input_mb, |
| (unsigned long long) stat_info.output_mb); |
| |
| ZFCP_SHOST_ATTR(seconds_active, "%llu\n", |
| (unsigned long long) stat_info.seconds_act); |
| |
| static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev, |
| struct device_attribute *attr, |
| char *buf) |
| { |
| struct Scsi_Host *scsi_host = class_to_shost(dev); |
| struct zfcp_qdio *qdio = |
| ((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio; |
| u64 util; |
| |
| spin_lock_bh(&qdio->stat_lock); |
| util = qdio->req_q_util; |
| spin_unlock_bh(&qdio->stat_lock); |
| |
| return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full), |
| (unsigned long long)util); |
| } |
| static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL); |
| |
| struct device_attribute *zfcp_sysfs_shost_attrs[] = { |
| &dev_attr_utilization, |
| &dev_attr_requests, |
| &dev_attr_megabytes, |
| &dev_attr_seconds_active, |
| &dev_attr_queue_full, |
| NULL |
| }; |
