On 6/9/26 14:18, Sumit Saxena wrote:

From: James Rizzo <redacted>

When a host adapter is attached to a specific NUMA node, allocating
scsi_device and scsi_target via kzalloc() may place them on a remote
node.  All hot-path I/O accesses to these structures then cross the NUMA
interconnect, adding latency and consuming inter-node bandwidth.

Use kzalloc_node() with dev_to_node(shost->dma_dev) so allocations land
on the same node as the HBA, reducing cross-node traffic and improving
I/O performance on NUMA systems.

Signed-off-by: James Rizzo <redacted>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
---
  drivers/scsi/scsi_scan.c | 7 ++++---
  1 file changed, 4 insertions(+), 3 deletions(-)

Reviewed-by: Hannes Reinecke <hare@kernel.org>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@suse.com                               +49 911 74053 688
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