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| author | John Garry <john.garry@huawei.com> | 2022-03-30 19:38:35 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-04-26 08:10:35 -0400 |
| commit | 973dac8a8a14a7fcfd4fa0b682851f415eb91b04 (patch) | |
| tree | 6a8b54547a460dc3e9c8285984dbe4c2f6e6c2ea /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | a346f28ad231cb6746109219a1a371d7de11d67c (diff) | |
scsi: core: Refine how we set tag_set NUMA node
For SCSI hosts which enable host_tagset the NUMA node returned from
blk_mq_hw_queue_to_node() is NUMA_NO_NODE always. Then, since in
scsi_mq_setup_tags() the default we choose for the tag_set NUMA node is
NUMA_NO_NODE, we always evaluate the NUMA node as NUMA_NO_NODE in functions
like blk_mq_alloc_rq_map().
The reason we get NUMA_NO_NODE from blk_mq_hw_queue_to_node() is that the
hctx_idx passed is BLK_MQ_NO_HCTX_IDX - so we can't match against a (HW)
queue mapping index.
Improve this by defaulting the tag_set NUMA node to the same NUMA node of
the SCSI host DMA dev.
Link: https://lore.kernel.org/r/1648640315-21419-1-git-send-email-john.garry@huawei.com
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions