On 6/9/26 14:18, Sumit Saxena wrote:
From: James Rizzo <[email protected]>
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 <[email protected]>
Signed-off-by: Sumit Saxena <[email protected]>
---
drivers/scsi/scsi_scan.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
Reviewed-by: Hannes Reinecke <[email protected]>
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
[email protected] +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
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