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scsi: cxlflash: Limit the debug logs in the IO path 

The kernel log can get filled with debug messages from send_cmd_ioarrin()
when dynamic debug is enabled for the cxlflash module and there is a lot of
legacy I/O traffic.

While these messages are necessary to debug issues that involve command
tracking, the abundance of data can overwrite other useful data in the
log. The best option available is to limit the messages that should serve
most of the common use cases.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Uma Krishnan 2018-05-11 14:05:08 -05:00 committed by Martin K. Petersen
parent e0f76ad130
commit d58188c306
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/cxlflash/main.c
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@ -339,8 +339,8 @@ static int send_cmd_ioarrin(struct afu *afu, struct afu_cmd *cmd)
writeq_be((u64)&cmd->rcb, &hwq->host_map->ioarrin);
out:
spin_unlock_irqrestore(&hwq->hsq_slock, lock_flags);
dev_dbg(dev, "%s: cmd=%p len=%u ea=%016llx rc=%d\n", __func__,
cmd, cmd->rcb.data_len, cmd->rcb.data_ea, rc);
dev_dbg_ratelimited(dev, "%s: cmd=%p len=%u ea=%016llx rc=%d\n",
__func__, cmd, cmd->rcb.data_len, cmd->rcb.data_ea, rc);
return rc;
}