linux-kernel - [PATCH 4.5 109/238] mtip32xx: Print exact time when an internal command is interrupted

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Message-Id: <20160410183502.469782151@linuxfoundation.org>
Date:	Sun, 10 Apr 2016 11:34:46 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Selvan Mani <smani@...ron.com>,
	Rajesh Kumar Sambandam <rsambandam@...ron.com>,
	Asai Thambi S P <asamymuthupa@...ron.com>,
	Jens Axboe <axboe@...com>
Subject: [PATCH 4.5 109/238] mtip32xx: Print exact time when an internal command is interrupted

4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Asai Thambi SP <asamymuthupa@...ron.com>

commit 5b7e0a8ac85e2dfd83830dc9e0b3554d153a37e3 upstream.

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>
Signed-off-by: Jens Axboe <axboe@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/block/mtip32xx/mtip32xx.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1092,6 +1092,7 @@ static int mtip_exec_internal_command(st
 	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(st
 	/* 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(st
 				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 */