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scsi: ufs: add ufs a command complete time stamp

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Signed-off-by: Zang Leigang <zangleigang@hisilicon.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Zang Leigang 2017-09-27 10:06:06 +08:00 committed by Martin K. Petersen
parent 479da36057
commit 090171885f
2 changed files with 7 additions and 0 deletions
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5
drivers/scsi/ufs/ufshcd.c
View file

@ -385,6 +385,8 @@ void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
dev_err(hba->dev, "UPIU[%d] - issue time %lld us\n",
tag, ktime_to_us(lrbp->issue_time_stamp));
dev_err(hba->dev, "UPIU[%d] - complete time %lld us\n",
tag, ktime_to_us(lrbp->compl_time_stamp));
dev_err(hba->dev,
"UPIU[%d] - Transfer Request Descriptor phys@0x%llx\n",
tag, (u64)lrbp->utrd_dma_addr);
@ -1746,6 +1748,7 @@ static inline
void ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag)
{
hba->lrb[task_tag].issue_time_stamp = ktime_get();
hba->lrb[task_tag].compl_time_stamp = ktime_set(0, 0);
ufshcd_clk_scaling_start_busy(hba);
__set_bit(task_tag, &hba->outstanding_reqs);
ufshcd_writel(hba, 1 << task_tag, REG_UTP_TRANSFER_REQ_DOOR_BELL);
@ -4627,6 +4630,8 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
}
if (ufshcd_is_clkscaling_supported(hba))
hba->clk_scaling.active_reqs--;
lrbp->compl_time_stamp = ktime_get();
}
/* clear corresponding bits of completed commands */

2
drivers/scsi/ufs/ufshcd.h
View file

@ -166,6 +166,7 @@ struct ufs_pm_lvl_states {
* @lun: LUN of the command
* @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
* @issue_time_stamp: time stamp for debug purposes
* @compl_time_stamp: time stamp for statistics
* @req_abort_skip: skip request abort task flag
*/
struct ufshcd_lrb {
@ -189,6 +190,7 @@ struct ufshcd_lrb {
u8 lun; /* UPIU LUN id field is only 8-bit wide */
bool intr_cmd;
ktime_t issue_time_stamp;
ktime_t compl_time_stamp;
bool req_abort_skip;
};