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megaraid_sas: Introduce module parameter for SCSI command timeout

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This patch will introduce module-parameter for SCSI command timeout
value and fix setting of resetwaittime beyond a value.

Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sumit Saxena 2016-01-28 21:04:34 +05:30 committed by Martin K. Petersen
parent ccc7507de2
commit e3d178ca77
2 changed files with 13 additions and 4 deletions
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15
drivers/scsi/megaraid/megaraid_sas_base.c
View File

@ -83,7 +83,7 @@ module_param(throttlequeuedepth, int, S_IRUGO);
MODULE_PARM_DESC(throttlequeuedepth,
"Adapter queue depth when throttled due to I/O timeout. Default: 16");
int resetwaittime = MEGASAS_RESET_WAIT_TIME;
unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
module_param(resetwaittime, int, S_IRUGO);
MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
"before resetting adapter. Default: 180");
@ -100,6 +100,10 @@ unsigned int dual_qdepth_disable;
module_param(dual_qdepth_disable, int, S_IRUGO);
MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
module_param(scmd_timeout, int, S_IRUGO);
MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
@ -1850,7 +1854,7 @@ static int megasas_slave_configure(struct scsi_device *sdev)
* The RAID firmware may require extended timeouts.
*/
blk_queue_rq_timeout(sdev->request_queue,
MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
scmd_timeout * HZ);
return 0;
}
@ -2645,7 +2649,7 @@ blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
unsigned long flags;
if (time_after(jiffies, scmd->jiffies_at_alloc +
(MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
(scmd_timeout * 2) * HZ)) {
return BLK_EH_NOT_HANDLED;
}
@ -5254,6 +5258,11 @@ static int megasas_init_fw(struct megasas_instance *instance)
instance->throttlequeuedepth =
MEGASAS_THROTTLE_QUEUE_DEPTH;
if (resetwaittime > MEGASAS_RESET_WAIT_TIME)
resetwaittime = MEGASAS_RESET_WAIT_TIME;
if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
/* Launch SR-IOV heartbeat timer */
if (instance->requestorId) {

2
drivers/scsi/megaraid/megaraid_sas_fusion.c
View File

@ -91,7 +91,7 @@ void megasas_start_timer(struct megasas_instance *instance,
struct timer_list *timer,
void *fn, unsigned long interval);
extern struct megasas_mgmt_info megasas_mgmt_info;
extern int resetwaittime;
extern unsigned int resetwaittime;
extern unsigned int dual_qdepth_disable;
static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
static void megasas_free_reply_fusion(struct megasas_instance *instance);