diff options
| author | Ranjan Kumar <ranjan.kumar@broadcom.com> | 2025-01-29 15:38:47 +0530 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-02-03 21:46:40 -0500 |
| commit | f08b24d82749117ce779cc66689e8594341130d3 (patch) | |
| tree | 331d38b036545b38c610d4b282033b7dc9700b46 /drivers/scsi/mpi3mr/mpi3mr_app.c | |
| parent | 2014c95afecee3e76ca4a56956a936e23283f05b (diff) | |
scsi: mpi3mr: Avoid reply queue full condition
To avoid reply queue full condition, update the driver to check IOCFacts
capabilities for qfull.
Update the operational reply queue's Consumer Index after processing 100
replies. If pending I/Os on a reply queue exceeds a threshold
(reply_queue_depth - 200), then return I/O back to OS to retry.
Also increase default admin reply queue size to 2K.
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20250129100850.25430-2-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_app.c')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_app.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 7589f48aebc8..1532436f0f3a 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -3061,6 +3061,29 @@ reply_queue_count_show(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR_RO(reply_queue_count); /** + * reply_qfull_count_show - Show reply qfull count + * @dev: class device + * @attr: Device attributes + * @buf: Buffer to copy + * + * Retrieves the current value of the reply_qfull_count from the mrioc structure and + * formats it as a string for display. + * + * Return: sysfs_emit() return + */ +static ssize_t +reply_qfull_count_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct mpi3mr_ioc *mrioc = shost_priv(shost); + + return sysfs_emit(buf, "%u\n", atomic_read(&mrioc->reply_qfull_count)); +} + +static DEVICE_ATTR_RO(reply_qfull_count); + +/** * logging_level_show - Show controller debug level * @dev: class device * @attr: Device attributes @@ -3152,6 +3175,7 @@ static struct attribute *mpi3mr_host_attrs[] = { &dev_attr_fw_queue_depth.attr, &dev_attr_op_req_q_count.attr, &dev_attr_reply_queue_count.attr, + &dev_attr_reply_qfull_count.attr, &dev_attr_logging_level.attr, &dev_attr_adp_state.attr, NULL, |