linux-kernel - [PATCH v2 3/9] mtip32xx: Print exact time when an internal command is interrupted

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Message-ID: <da1ee7d4-ae92-ad86-3981-03e00cf7a15d@micron.com>
Date:	Wed, 24 Feb 2016 21:16:38 -0800
From:	Asai Thambi SP <asamymuthupa@...ron.com>
To:	Jens Axboe <axboe@...nel.dk>
CC:	<linux-kernel@...r.kernel.org>,
	Sam Bradshaw <sbradshaw@...ron.com>,
	Selvan Mani <smani@...ron.com>,
	Rajesh Kumar Sambandam <rsambandam@...ron.com>,
	Vignesh Gunasekaran <vgunasekaran@...ron.com>
Subject: [PATCH v2 3/9] mtip32xx: Print exact time when an internal command is
 interrupted


Print exact time when an internal command is interrupted.

Signed-off-by: Selvan Mani <smani@...ron.com>
Signed-off-by: Rajesh Kumar Sambandam <rsambandam@...ron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@...ron.com>
---
 drivers/block/mtip32xx/mtip32xx.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index be9ad9c..9ae4cc5 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1092,6 +1092,7 @@ static int mtip_exec_internal_command(struct mtip_port *port,
 	struct mtip_cmd *int_cmd;
 	struct driver_data *dd = port->dd;
 	int rv = 0;
+	unsigned long start;
 
 	/* Make sure the buffer is 8 byte aligned. This is asic specific. */
 	if (buffer & 0x00000007) {
@@ -1155,6 +1156,8 @@ static int mtip_exec_internal_command(struct mtip_port *port,
 	/* Populate the command header */
 	int_cmd->command_header->byte_count = 0;
 
+	start = jiffies;
+
 	/* Issue the command to the hardware */
 	mtip_issue_non_ncq_command(port, MTIP_TAG_INTERNAL);
 
@@ -1165,8 +1168,9 @@ static int mtip_exec_internal_command(struct mtip_port *port,
 				msecs_to_jiffies(timeout))) <= 0) {
 			if (rv == -ERESTARTSYS) { /* interrupted */
 				dev_err(&dd->pdev->dev,
-					"Internal command [%02X] was interrupted after %lu ms\n",
-					fis->command, timeout);
+					"Internal command [%02X] was interrupted after %u ms\n",
+					fis->command,
+					jiffies_to_msecs(jiffies - start));
 				rv = -EINTR;
 				goto exec_ic_exit;
 			} else if (rv == 0) /* timeout */
-- 
1.7.1