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Date:   Tue, 14 Jul 2020 17:18:56 +0800
From:   Can Guo <cang@codeaurora.org>
To:     Stanley Chu <stanley.chu@mediatek.com>
Cc:     linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
        avri.altman@wdc.com, alim.akhtar@samsung.com, jejb@linux.ibm.com,
        bvanassche@acm.org, beanhuo@micron.com, asutoshd@codeaurora.org,
        matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        kuohong.wang@mediatek.com, peter.wang@mediatek.com,
        chun-hung.wu@mediatek.com, andy.teng@mediatek.com,
        chaotian.jing@mediatek.com, cc.chou@mediatek.com
Subject: Re: [PATCH v1 1/2] scsi: ufs: Simplify completion timestamp for SCSI
 and query commands
In-Reply-To: <20200706060707.32608-2-stanley.chu@mediatek.com>
References: <20200706060707.32608-1-stanley.chu@mediatek.com>
 <20200706060707.32608-2-stanley.chu@mediatek.com>
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On 2020-07-06 14:07, Stanley Chu wrote:
> Simplify recording command completion time in
> __ufshcd_transfer_req_compl() by assigning lrbp->compl_time_stamp
> in an unified location.
> 
> Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>

Reviewed-by: Can Guo <cang@codeaurora.org>

> ---
>  drivers/scsi/ufs/ufshcd.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 18da2d64f9fa..71e8d7c782bd 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -4881,6 +4881,7 @@ static void __ufshcd_transfer_req_compl(struct
> ufs_hba *hba,
> 
>  	for_each_set_bit(index, &completed_reqs, hba->nutrs) {
>  		lrbp = &hba->lrb[index];
> +		lrbp->compl_time_stamp = ktime_get();
>  		cmd = lrbp->cmd;
>  		if (cmd) {
>  			ufshcd_add_command_trace(hba, index, "complete");
> @@ -4889,13 +4890,11 @@ static void __ufshcd_transfer_req_compl(struct
> ufs_hba *hba,
>  			cmd->result = result;
>  			/* Mark completed command as NULL in LRB */
>  			lrbp->cmd = NULL;
> -			lrbp->compl_time_stamp = ktime_get();
>  			/* Do not touch lrbp after scsi done */
>  			cmd->scsi_done(cmd);
>  			__ufshcd_release(hba);
>  		} else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
>  			lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
> -			lrbp->compl_time_stamp = ktime_get();
>  			if (hba->dev_cmd.complete) {
>  				ufshcd_add_command_trace(hba, index,
>  						"dev_complete");