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path: root/drivers/scsi/scsi_sysfs.c
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Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
-rw-r--r--drivers/scsi/scsi_sysfs.c44
1 files changed, 41 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 392d8db..5a06505 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -766,10 +766,13 @@ sdev_store_queue_depth_rw(struct device *dev, struct device_attribute *attr,
if (depth < 1)
return -EINVAL;
- retval = sht->change_queue_depth(sdev, depth);
+ retval = sht->change_queue_depth(sdev, depth,
+ SCSI_QDEPTH_DEFAULT);
if (retval < 0)
return retval;
+ sdev->max_queue_depth = sdev->queue_depth;
+
return count;
}
@@ -778,6 +781,37 @@ static struct device_attribute sdev_attr_queue_depth_rw =
sdev_store_queue_depth_rw);
static ssize_t
+sdev_show_queue_ramp_up_period(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct scsi_device *sdev;
+ sdev = to_scsi_device(dev);
+ return snprintf(buf, 20, "%u\n",
+ jiffies_to_msecs(sdev->queue_ramp_up_period));
+}
+
+static ssize_t
+sdev_store_queue_ramp_up_period(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct scsi_device *sdev = to_scsi_device(dev);
+ unsigned long period;
+
+ if (strict_strtoul(buf, 10, &period))
+ return -EINVAL;
+
+ sdev->queue_ramp_up_period = msecs_to_jiffies(period);
+ return period;
+}
+
+static struct device_attribute sdev_attr_queue_ramp_up_period =
+ __ATTR(queue_ramp_up_period, S_IRUGO | S_IWUSR,
+ sdev_show_queue_ramp_up_period,
+ sdev_store_queue_ramp_up_period);
+
+static ssize_t
sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
@@ -867,8 +901,12 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
sdev->is_visible = 1;
/* create queue files, which may be writable, depending on the host */
- if (sdev->host->hostt->change_queue_depth)
- error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_depth_rw);
+ if (sdev->host->hostt->change_queue_depth) {
+ error = device_create_file(&sdev->sdev_gendev,
+ &sdev_attr_queue_depth_rw);
+ error = device_create_file(&sdev->sdev_gendev,
+ &sdev_attr_queue_ramp_up_period);
+ }
else
error = device_create_file(&sdev->sdev_gendev, &dev_attr_queue_depth);
if (error)