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scsi: ibmvfc: Limit max hw queues by num_online_cpus()

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An LPAR could potentially be configured with a small logical cpu count that
is less then the default hardware queue max. Ensure that we don't allocate
more hw queues than available cpus.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Link: https://lore.kernel.org/r/20230921225435.3537728-4-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler 2023-09-21 17:54:27 -05:00 committed by Martin K. Petersen
parent e1a4e0d3ce
commit b27bce7291
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/ibmvscsi/ibmvfc.c
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@ -6261,7 +6261,8 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id)
struct Scsi_Host *shost;
struct device *dev = &vdev->dev;
int rc = -ENOMEM;
unsigned int max_scsi_queues = IBMVFC_MAX_SCSI_QUEUES;
unsigned int online_cpus = num_online_cpus();
unsigned int max_scsi_queues = min((unsigned int)IBMVFC_MAX_SCSI_QUEUES, online_cpus);
ENTER;
shost = scsi_host_alloc(&driver_template, sizeof(*vhost));