linux-kernel - Re: [PATCH v2 1/4] scsi: ufs: Cleanup ufshcd_add_command

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Message-ID: <810c58442d4bdfb5e58009d87766dd7a@codeaurora.org>
Date:   Wed, 02 Jun 2021 10:35:06 +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 1/4] scsi: ufs: Cleanup ufshcd_add_command_trace()

On 2021-05-31 18:43, Bean Huo wrote:
> From: Bean Huo <beanhuo@...ron.com>
> 
> To consistent with trace event print, convert the value of the
> variable 'lba' in the unit of LBA (logical block address).
> 
> Suggested-by: Bart Van Assche <bvanassche@....org>
> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---
>  drivers/scsi/ufs/ufshcd.c | 16 +++++++++-------
>  1 file changed, 9 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 02267b090729..85590d3a719e 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -25,6 +25,7 @@
>  #include "ufs_bsg.h"
>  #include "ufshcd-crypto.h"
>  #include <asm/unaligned.h>
> +#include "../sd.h"
> 
>  #define CREATE_TRACE_POINTS
>  #include <trace/events/ufs.h>
> @@ -364,7 +365,7 @@ static void ufshcd_add_uic_command_trace(struct
> ufs_hba *hba,
>  static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int 
> tag,
>  				     enum ufs_trace_str_t str_t)
>  {
> -	sector_t lba = -1;
> +	u64 lba = -1;
>  	u8 opcode = 0, group_id = 0;
>  	u32 intr, doorbell;
>  	struct ufshcd_lrb *lrbp = &hba->lrb[tag];
> @@ -382,22 +383,23 @@ static void ufshcd_add_command_trace(struct
> ufs_hba *hba, unsigned int tag,
>  		/* trace UPIU also */
>  		ufshcd_add_cmd_upiu_trace(hba, tag, str_t);
>  		opcode = cmd->cmnd[0];
> +		lba = sectors_to_logical(cmd->device, blk_rq_pos(cmd->request));
> +
>  		if ((opcode == READ_10) || (opcode == WRITE_10)) {
>  			/*
>  			 * Currently we only fully trace read(10) and write(10)
>  			 * commands
>  			 */
> -			if (cmd->request && cmd->request->bio)
> -				lba = cmd->request->bio->bi_iter.bi_sector;
>  			transfer_len = be32_to_cpu(
>  				lrbp->ucd_req_ptr->sc.exp_data_transfer_len);
>  			if (opcode == WRITE_10)
>  				group_id = lrbp->cmd->cmnd[6];
>  		} else if (opcode == UNMAP) {
> -			if (cmd->request) {
> -				lba = scsi_get_lba(cmd);
> -				transfer_len = blk_rq_bytes(cmd->request);
> -			}
> +			/*
> +			 * The number of Bytes to be unmapped beginning with the
> +			 * lba.
> +			 */
> +			transfer_len = blk_rq_bytes(cmd->request);
>  		}
>  	}

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