diff mbox series

[v2,03/11] ibmvfc: limit max hw queues by num_online_cpus()

Message ID 20230921225435.3537728-4-tyreld@linux.ibm.com (mailing list archive)
State Accepted
Headers show
Series ibmvfc: fixes and generic prep work for NVMeoF support | expand

Commit Message

Tyrel Datwyler Sept. 21, 2023, 10:54 p.m. UTC 
A 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>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
---
 drivers/scsi/ibmvscsi/ibmvfc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 6d66a416c44e..2bfeeb9ace01 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -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));