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| author | Damien Le Moal <damien.lemoal@wdc.com> | 2020-04-22 12:42:18 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-05-05 06:37:32 +0200 |
| commit | 380603a5bb83d3c55eee20511ba3091e206b7d99 (patch) | |
| tree | 298baa06b24ba8f6ead294ab6c9ed6bfb5b8006e /drivers/scsi/scsi_debug.c | |
| parent | scsi: scsi_debug: Add ZBC module parameter (diff) | |
| download | linux-380603a5bb83d3c55eee20511ba3091e206b7d99.tar.xz linux-380603a5bb83d3c55eee20511ba3091e206b7d99.zip | |
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>
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index d0ac1f584205..31e8d0b02747 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -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]; |