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scsi: qla2xxx: Limit interrupt vectors to number of CPUs
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Driver created too many QPairs(126) with 28xx adapter.  Limit to the number
of CPUs to minimize wasted resources.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Himanshu Madhani <[email protected]>
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Nilesh Javali <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Quinn Tran authored and martinkpetersen committed Dec 9, 2020
1 parent c159965 commit a6dcfe0
Showing 1 changed file with 4 additions and 2 deletions.
6 changes: 4 additions & 2 deletions drivers/scsi/qla2xxx/qla_isr.c
Original file line number Diff line number Diff line change
Expand Up @@ -3952,10 +3952,12 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
/* user wants to control IRQ setting for target mode */
ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
ha->msix_count, PCI_IRQ_MSIX);
min((u16)ha->msix_count, (u16)num_online_cpus()),
PCI_IRQ_MSIX);
} else
ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
min((u16)ha->msix_count, (u16)num_online_cpus()),
PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
&desc);

if (ret < 0) {
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