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| author | John Garry <john.garry@huawei.com> | 2020-08-19 18:20:31 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-10-06 17:33:44 +0300 |
| commit | 64f1501bd2a9c8ab1df548e1ed224552f9c7ac71 (patch) | |
| tree | 827c66f697bac32de0d5cafb6daf94f36456e821 /drivers/scsi/scsi_sysfs.c | |
| parent | bdb01301f3ea51a59eff252b06643fc1fe843e57 (diff) | |
| download | linux-64f1501bd2a9c8ab1df548e1ed224552f9c7ac71.tar.xz | |
scsi: core: Show nr_hw_queues in sysfs
So that we don't use a value of 0 for when Scsi_Host.nr_hw_queues is unset,
use the tag_set->nr_hw_queues (which holds 1 for this case).
Signed-off-by: John Garry <john.garry@huawei.com>
Tested-by: Douglas Gilbert <dgilbert@interlog.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
| -rw-r--r-- | drivers/scsi/scsi_sysfs.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 163dbcb741c1..d6e344fa33ad 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -393,6 +393,16 @@ show_use_blk_mq(struct device *dev, struct device_attribute *attr, char *buf) } static DEVICE_ATTR(use_blk_mq, S_IRUGO, show_use_blk_mq, NULL); +static ssize_t +show_nr_hw_queues(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct blk_mq_tag_set *tag_set = &shost->tag_set; + + return snprintf(buf, 20, "%d\n", tag_set->nr_hw_queues); +} +static DEVICE_ATTR(nr_hw_queues, S_IRUGO, show_nr_hw_queues, NULL); + static struct attribute *scsi_sysfs_shost_attrs[] = { &dev_attr_use_blk_mq.attr, &dev_attr_unique_id.attr, @@ -411,6 +421,7 @@ static struct attribute *scsi_sysfs_shost_attrs[] = { &dev_attr_prot_guard_type.attr, &dev_attr_host_reset.attr, &dev_attr_eh_deadline.attr, + &dev_attr_nr_hw_queues.attr, NULL }; |