openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

scsi: scsi_debug: Add zone_max_open module parameter 

Add the zone_max_open module parameters to control the maximum number of
open zones of a ZBC device. This parameter is ignored for device types
other than 0x14 (zbc=2 case).

Link: https://lore.kernel.org/r/20200422104221.378203-5-damien.lemoal@wdc.com
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Damien Le Moal 2020-04-22 19:42:18 +09:00 committed by Martin K. Petersen
parent 9267e0eb41
commit 380603a5bb
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/scsi/scsi_debug.c
View File

@ -822,7 +822,7 @@ static int dif_errors;
/* ZBC global data */
static bool sdeb_zbc_in_use; /* true when ptype=TYPE_ZBC [0x14] */
static const int zbc_zone_size_mb;
static const int zbc_max_open_zones = DEF_ZBC_MAX_OPEN_ZONES;
static int sdeb_zbc_max_open = DEF_ZBC_MAX_OPEN_ZONES;
static int submit_queues = DEF_SUBMIT_QUEUES; /* > 1 for multi-queue (mq) */
static struct sdebug_queue *sdebug_q_arr; /* ptr to array of submit queues */
@ -4788,10 +4788,10 @@ static int sdebug_device_create_zones(struct sdebug_dev_info *devip)
devip->nr_zones = (capacity + devip->zsize - 1) >> devip->zsize_shift;
/* zbc_max_open_zones can be 0, meaning "not reported" (no limit) */
if (zbc_max_open_zones >= devip->nr_zones - 1)
if (sdeb_zbc_max_open >= devip->nr_zones - 1)
devip->max_open = (devip->nr_zones - 1) / 2;
else
devip->max_open = zbc_max_open_zones;
devip->max_open = sdeb_zbc_max_open;
devip->zstate = kcalloc(devip->nr_zones,
sizeof(struct sdeb_zone_state), GFP_KERNEL);
@ -5540,6 +5540,7 @@ 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(zbc, sdeb_zbc_model_s, charp, S_IRUGO);
module_param_named(zone_max_open, sdeb_zbc_max_open, int, S_IRUGO);
MODULE_AUTHOR("Eric Youngdale + Douglas Gilbert");
MODULE_DESCRIPTION("SCSI debug adapter driver");
@ -5602,6 +5603,7 @@ MODULE_PARM_DESC(vpd_use_hostno, "0 -> dev ids ignore hostno (def=1 -> unique de
MODULE_PARM_DESC(wp, "Write Protect (def=0)");
MODULE_PARM_DESC(write_same_length, "Maximum blocks per WRITE SAME cmd (def=0xffff)");
MODULE_PARM_DESC(zbc, "'none' [0]; 'aware' [1]; 'managed' [2] (def=0). Can have 'host-' prefix");
MODULE_PARM_DESC(zone_max_open, "Maximum number of open zones; [0] for no limit (def=auto)");
#define SDEBUG_INFO_LEN 256
static char sdebug_info[SDEBUG_INFO_LEN];