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From: Bart Van Assche <bvanassche@acm.org>
To: "Martin K . Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org, Bart Van Assche <bvanassche@acm.org>,
	Avri Altman <avri.altman@sandisk.com>,
	Peter Wang <peter.wang@mediatek.com>,
	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	AngeloGioacchino Del Regno
	<angelogioacchino.delregno@collabora.com>,
	Bean Huo <beanhuo@micron.com>
Subject: [PATCH v6 10/28] ufs: core: Only call ufshcd_add_command_trace() for SCSI commands
Date: Tue, 14 Oct 2025 13:15:52 -0700	[thread overview]
Message-ID: <20251014201707.3396650-11-bvanassche@acm.org> (raw)
In-Reply-To: <20251014201707.3396650-1-bvanassche@acm.org>

Instead of checking inside ufshcd_add_command_trace() whether 'cmd' points
at a SCSI command, let the caller perform that check. This patch prepares
for removing the lrbp->cmd pointer.

Reviewed-by: Avri Altman <avri.altman@sandisk.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/ufs/core/ufshcd.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 0677438a2b06..0d57deb9b724 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -486,9 +486,6 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba, unsigned int tag,
 	struct request *rq = scsi_cmd_to_rq(cmd);
 	int transfer_len = -1;
 
-	if (!cmd)
-		return;
-
 	/* trace UPIU also */
 	ufshcd_add_cmd_upiu_trace(hba, lrbp, str_t);
 	if (!trace_ufshcd_command_enabled())
@@ -2368,9 +2365,10 @@ void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag,
 		lrbp->compl_time_stamp = ktime_set(0, 0);
 		lrbp->compl_time_stamp_local_clock = 0;
 	}
-	ufshcd_add_command_trace(hba, task_tag, UFS_CMD_SEND);
-	if (lrbp->cmd)
+	if (lrbp->cmd) {
+		ufshcd_add_command_trace(hba, task_tag, UFS_CMD_SEND);
 		ufshcd_clk_scaling_start_busy(hba);
+	}
 	if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
 		ufshcd_start_monitor(hba, lrbp);
 

  parent reply	other threads:[~2025-10-14 20:19 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-14 20:15 [PATCH v6 00/28] Optimize the hot path in the UFS driver Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 01/28] scsi: core: Support allocating reserved commands Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 02/28] scsi: core: Move two statements Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 03/28] scsi: core: Make the budget map optional Bart Van Assche
2025-10-16  6:06   ` Hannes Reinecke
2025-10-22  8:29   ` John Garry
2025-10-22 17:23     ` Bart Van Assche
2025-10-23 10:02       ` John Garry
2025-10-14 20:15 ` [PATCH v6 04/28] scsi: core: Support allocating a pseudo SCSI device Bart Van Assche
2025-10-20 11:10   ` John Garry
2025-10-20 16:10     ` Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 05/28] scsi: core: Introduce .queue_reserved_command() Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 06/28] scsi: core: Add scsi_{get,put}_internal_cmd() helpers Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 07/28] scsi_debug: Abort SCSI commands via an internal command Bart Van Assche
2025-10-22  8:46   ` John Garry
2025-10-23 16:19     ` Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 08/28] ufs: core: Move an assignment in ufshcd_mcq_process_cqe() Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 09/28] ufs: core: Change the type of one ufshcd_add_cmd_upiu_trace() argument Bart Van Assche
2025-10-14 20:15 ` Bart Van Assche [this message]
2025-10-14 20:15 ` [PATCH v6 11/28] ufs: core: Change the type of one ufshcd_add_command_trace() argument Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 12/28] ufs: core: Change the type of one ufshcd_send_command() argument Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 13/28] ufs: core: Only call ufshcd_should_inform_monitor() for SCSI commands Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 14/28] ufs: core: Change the monitor function argument types Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 15/28] ufs: core: Rework ufshcd_mcq_compl_pending_transfer() Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 16/28] ufs: core: Rework ufshcd_eh_device_reset_handler() Bart Van Assche
2025-10-14 20:15 ` [PATCH v6 17/28] ufs: core: Rework the SCSI host queue depth calculation code Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 18/28] ufs: core: Allocate the SCSI host earlier Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 19/28] ufs: core: Call ufshcd_init_lrb() later Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 20/28] ufs: core: Use hba->reserved_slot Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 21/28] ufs: core: Make the reserved slot a reserved request Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 22/28] ufs: core: Do not clear driver-private command data Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 23/28] ufs: core: Optimize the hot path Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 24/28] ufs: core: Pass a SCSI pointer instead of an LRB pointer Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 25/28] ufs: core: Remove the ufshcd_lrb task_tag member Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 26/28] ufs: core: Make blk_mq_tagset_busy_iter() skip reserved requests Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 27/28] ufs: core: Move code out of ufshcd_wait_for_dev_cmd() Bart Van Assche
2025-10-14 20:16 ` [PATCH v6 28/28] ufs: core: Switch to scsi_get_internal_cmd() Bart Van Assche

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