linux-kernel - [PATCH 04/10] mtip32xx: Print exact time when an internal command is interrupted

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Date:	Mon, 22 Feb 2016 21:01:03 -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 04/10] 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 30f8246..ca9d35a 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -1127,6 +1127,7 @@ 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) {
@@ -1207,6 +1208,8 @@ 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);
 
@@ -1217,8 +1220,9 @@ 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