[PATCH v8 01/12] scsi: aacraid: use block layer helpers to calculate num of queues

Daniel Wagner wagi at kernel.org
Fri Sep 5 07:59:47 PDT 2025


The calculation of the upper limit for queues does not depend solely on
the number of online CPUs; for example, the isolcpus kernel
command-line option must also be considered.

To account for this, the block layer provides a helper function to
retrieve the maximum number of queues. Use it to set an appropriate
upper queue number limit.

Fixes: 94970cfb5f10 ("scsi: use block layer helpers to calculate num of queues")
Signed-off-by: Daniel Wagner <wagi at kernel.org>
---
 drivers/scsi/aacraid/comminit.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 726c8531b7d3fbff4cc7b6a7ac4891f7bcb1c12f..788d7bf0a2d371fd3b38d88b0a9d76937f37d28b 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -469,8 +469,7 @@ void aac_define_int_mode(struct aac_dev *dev)
 	}
 
 	/* Don't bother allocating more MSI-X vectors than cpus */
-	msi_count = min(dev->max_msix,
-		(unsigned int)num_online_cpus());
+	msi_count = blk_mq_num_online_queues(dev->max_msix);
 
 	dev->max_msix = msi_count;
 

-- 
2.51.0




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