Brian King <[email protected]> writes:
> From: Wen Xiong <[email protected]>
>
> Add scsi multi-queue support in ipr driver.
>
> Signed-off-by: Brian King <[email protected]>
Patch looks good, very simple :)
Missing a sign-off from Wendy, though.
> ---
>
> drivers/scsi/ipr.c | 14 +++++++++++++-
> 1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff -puN drivers/scsi/ipr.c~ipr_scsimq drivers/scsi/ipr.c
> --- linux-2.6.git/drivers/scsi/ipr.c~ipr_scsimq 2016-09-05
> 14:30:47.450074000 -0500
> +++ linux-2.6.git-bjking1/drivers/scsi/ipr.c 2016-09-05 15:36:33.216027606
> -0500
> @@ -6492,6 +6492,7 @@ static int ipr_queuecommand(struct Scsi_
> int rc;
> struct ipr_hrr_queue *hrrq;
> int hrrq_id;
> + uint32_t tag;
>
> ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
>
> @@ -6505,7 +6506,12 @@ static int ipr_queuecommand(struct Scsi_
> return rc;
> }
>
> - hrrq_id = ipr_get_hrrq_index(ioa_cfg);
> + if (shost_use_blk_mq(scsi_cmd->device->host) && ioa_cfg->hrrq_num > 1) {
> + tag = blk_mq_unique_tag(scsi_cmd->request);
> + hrrq_id = blk_mq_unique_tag_to_hwq(tag) + 1;
> + } else
> + hrrq_id = ipr_get_hrrq_index(ioa_cfg);
> +
> hrrq = &ioa_cfg->hrrq[hrrq_id];
>
> spin_lock_irqsave(hrrq->lock, hrrq_flags);
> @@ -10306,6 +10312,12 @@ static int ipr_probe_ioa(struct pci_dev
> (unsigned int)num_online_cpus(),
> (unsigned int)IPR_MAX_HRRQ_NUM);
>
> + /* Reserve the first hardware queue for slow interrupts, such as errors
> */
> + if (ioa_cfg->hrrq_num > 1)
> + host->nr_hw_queues = ioa_cfg->hrrq_num - 1;
> + else
> + host->nr_hw_queues = 1;
> +
> if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
> goto out_msi_disable;
>
> _
>
>
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>
--
Gabriel Krisman Bertazi
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