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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 /drivers/scsi/hosts.c | |
| parent | a346f28ad231cb6746109219a1a371d7de11d67c (diff) | |
| download | linux-973dac8a8a14a7fcfd4fa0b682851f415eb91b04.tar.bz2 | |
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 'drivers/scsi/hosts.c')
| -rw-r--r-- | drivers/scsi/hosts.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index f69b77cbf538..8352f90d997d 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -229,10 +229,6 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, if (error) goto fail; - error = scsi_mq_setup_tags(shost); - if (error) - goto fail; - if (!shost->shost_gendev.parent) shost->shost_gendev.parent = dev ? dev : &platform_bus; if (!dma_dev) @@ -240,6 +236,10 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, shost->dma_dev = dma_dev; + error = scsi_mq_setup_tags(shost); + if (error) + goto fail; + /* * Increase usage count temporarily here so that calling * scsi_autopm_put_host() will trigger runtime idle if there is |