[PATCH 4/9] scsi_debug: support host tagset

[Ming Lei]

The 'host_tagset' can be set on scsi_debug device for testing
shared hostwide tags on multiple blk-mq hw queue.

Signed-off-by: Ming Lei <ming....@redhat.com>
---
 drivers/scsi/scsi_debug.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index d323523f5f9d..8cf3f6c3f4f9 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -665,6 +665,7 @@ static bool have_dif_prot;
 static bool write_since_sync;
 static bool sdebug_statistics = DEF_STATISTICS;
 static bool sdebug_wp;
+static bool sdebug_host_tagset = false;
 
 static unsigned int sdebug_store_sectors;
 static sector_t sdebug_capacity;       /* in sectors */
@@ -4468,6 +4469,7 @@ module_param_named(vpd_use_hostno, sdebug_vpd_use_hostno, 
int,
 module_param_named(wp, sdebug_wp, bool, S_IRUGO | S_IWUSR);
 module_param_named(write_same_length, sdebug_write_same_length, int,
                   S_IRUGO | S_IWUSR);
+module_param_named(host_tagset, sdebug_host_tagset, bool, S_IRUGO | S_IWUSR);
 
 MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert");
 MODULE_DESCRIPTION("SCSI debug adapter driver");
@@ -5779,6 +5781,7 @@ static int sdebug_driver_probe(struct device *dev)
        sdbg_host = to_sdebug_host(dev);
 
        sdebug_driver_template.can_queue = sdebug_max_queue;
+       sdebug_driver_template.host_tagset = sdebug_host_tagset;
        if (!sdebug_clustering)
                sdebug_driver_template.dma_boundary = PAGE_SIZE - 1;
 
-- 
2.20.1