diff options
| author | Ranjan Kumar <ranjan.kumar@broadcom.com> | 2025-01-29 15:38:47 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-20 10:17:41 +0200 |
| commit | 27d692edc1cdccf57fd3544d4faa401dc7966c36 (patch) | |
| tree | 9ddffcddab80a629936d8a9d39b47f1d3d30b153 /drivers/scsi/mpi3mr/mpi3mr_app.c | |
| parent | 5b8a5604434fee45cb3d3b9d3a9987c8f112e07b (diff) | |
scsi: mpi3mr: Avoid reply queue full condition
[ Upstream commit f08b24d82749117ce779cc66689e8594341130d3 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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, |