linux-kernel - Re: [PATCH for-next] RDMA/hns: Support SRQ record doorbell

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Date:   Tue, 26 Sep 2023 12:30:46 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Junxian Huang <huangjunxian6@...ilicon.com>
Cc:     jgg@...pe.ca, linux-rdma@...r.kernel.org, linuxarm@...wei.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH for-next] RDMA/hns: Support SRQ record doorbell

On Wed, Sep 20, 2023 at 11:30:05AM +0800, Junxian Huang wrote:
> From: Yangyang Li <liyangyang20@...wei.com>
> 
> Compared with normal doorbell, using record doorbell can shorten the
> process of ringing the doorbell and reduce the latency.
> 
> Add a flag HNS_ROCE_CAP_FLAG_SRQ_RECORD_DB to allow FW to
> enable/disable SRQ record doorbell.
> 
> If the flag above is set, allocate the dma buffer for SRQ record
> doorbell and write the buffer address into SRQC during SRQ creation.
> 
> For userspace SRQ, add a flag HNS_ROCE_RSP_SRQ_CAP_RECORD_DB to notify
> userspace whether the SRQ record doorbell is enabled.
> 
> Signed-off-by: Yangyang Li <liyangyang20@...wei.com>
> Signed-off-by: Junxian Huang <huangjunxian6@...ilicon.com>
> ---
>  drivers/infiniband/hw/hns/hns_roce_device.h |  3 +
>  drivers/infiniband/hw/hns/hns_roce_hw_v2.c  | 30 ++++++--
>  drivers/infiniband/hw/hns/hns_roce_srq.c    | 85 ++++++++++++++++++++-
>  include/uapi/rdma/hns-abi.h                 | 13 +++-
>  4 files changed, 120 insertions(+), 11 deletions(-)

Junxian, do you plan to resubmit it this patch to fix kbuild error?

Thanks