linux-kernel - Re: [PATCH v2 4/4] scsi: ufs: Use UPIU query trace in devman_upiu

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Message-ID: <7689e5022787716596534e9123fdc295@codeaurora.org>
Date:   Wed, 02 Jun 2021 10:29:47 +0800
From:   Can Guo <cang@...eaurora.org>
To:     Bean Huo <huobean@...il.com>
Cc:     alim.akhtar@...sung.com, avri.altman@....com,
        asutoshd@...eaurora.org, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        beanhuo@...ron.com, bvanassche@....org, tomas.winkler@...el.com,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] scsi: ufs: Use UPIU query trace in devman_upiu_cmd

Hi Bean,

On 2021-05-31 18:43, Bean Huo wrote:
> From: Bean Huo <beanhuo@...ron.com>
> 
> Since devman_upiu_cmd is not COMMAND UPIU, and doesn't have
> CDB, it is better to use UPIU query trace, which provides more
> helpful information for issue shooting.
> 
> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---
>  drivers/scsi/ufs/ufshcd.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index c84bd8e045f6..deb9e232b349 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -6701,6 +6701,7 @@ static int ufshcd_issue_devman_upiu_cmd(struct
> ufs_hba *hba,
> 
>  	hba->dev_cmd.complete = &wait;
> 
> +	ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr);
>  	/* Make sure descriptors are ready before ringing the doorbell */
>  	wmb();
>  	spin_lock_irqsave(hba->host->host_lock, flags);
> @@ -6732,6 +6733,8 @@ static int ufshcd_issue_devman_upiu_cmd(struct
> ufs_hba *hba,
>  			err = -EINVAL;
>  		}
>  	}
> +	ufshcd_add_query_upiu_trace(hba, err ? UFS_QUERY_ERR : 
> UFS_QUERY_COMP,
> +				    (struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
> 
>  out:
>  	blk_put_request(req);

What about ufshcd_exec_dev_cmd()?

Thanks,
Can Guo.