diff mbox

[3/4] mailbox: mailbox-test: use print_hex_dump_bytes to allow dynamic printk

Message ID 1455210808-29395-4-git-send-email-sudeep.holla@arm.com
State Superseded
Headers show

Commit Message

Sudeep Holla Feb. 11, 2016, 5:13 p.m. UTC 
Reduce the logging from info to debug. Also use print_hex_dump_bytes
instead as it has support for dynamic printk providing options to
conditionally enable/disable these logs.

Cc: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

---
 drivers/mailbox/mailbox-test.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

-- 
1.9.1

Comments

Sudeep Holla Feb. 12, 2016, 9:32 a.m. UTC | #1 
On 12/02/16 09:12, Lee Jones wrote:
> On Thu, 11 Feb 2016, Sudeep Holla wrote:

>

>> Reduce the logging from info to debug. Also use print_hex_dump_bytes

>> instead as it has support for dynamic printk providing options to

>> conditionally enable/disable these logs.

>

> Printing out the data in this way is kinda the point of the driver.

> But if you don't have a use for it, then I guess it's okay to

> downgrade it to DEBUG, as turning debug on, or hacking the driver back

> again are trivial actions.

>


Agreed, I wanted check the same by adding additional note but forgot.
Sorry for missing that.

One of the reasons I preferred this it's easy to switch it on or off via
debug level or dynamic debug. It's useful when the test application
using these sysfs also logs and ends up cluttered by kernel logs.

-- 
Regards,
Sudeep
diff mbox

Patch

diff --git a/drivers/mailbox/mailbox-test.c b/drivers/mailbox/mailbox-test.c
index 036a852b5fa1..f690f11969a1 100644
--- a/drivers/mailbox/mailbox-test.c
+++ b/drivers/mailbox/mailbox-test.c
@@ -113,15 +113,15 @@  static ssize_t mbox_test_message_write(struct file *filp,
 	 * MMIO to subsequently pass the message through
 	 */
 	if (tdev->mmio && tdev->signal) {
-		print_hex_dump(KERN_INFO, "Client: Sending: Signal: ", DUMP_PREFIX_ADDRESS,
-			       MBOX_BYTES_PER_LINE, 1, tdev->signal, MBOX_MAX_SIG_LEN, true);
+		print_hex_dump_bytes("Client: Sending: Signal: ", DUMP_PREFIX_ADDRESS,
+				     tdev->signal, MBOX_MAX_SIG_LEN);
 
 		data = tdev->signal;
 	} else
 		data = tdev->message;
 
-	print_hex_dump(KERN_INFO, "Client: Sending: Message: ", DUMP_PREFIX_ADDRESS,
-		       MBOX_BYTES_PER_LINE, 1, tdev->message, MBOX_MAX_MSG_LEN, true);
+	print_hex_dump_bytes("Client: Sending: Message: ", DUMP_PREFIX_ADDRESS,
+			     tdev->message, MBOX_MAX_MSG_LEN);
 
 	ret = mbox_send_message(tdev->tx_channel, data);
 	if (ret < 0)
@@ -222,13 +222,11 @@  static void mbox_test_receive_message(struct mbox_client *client, void *message)
 	spin_lock_irqsave(&tdev->lock, flags);
 	if (tdev->mmio) {
 		memcpy_fromio(tdev->rx_buffer, tdev->mmio, MBOX_MAX_MSG_LEN);
-		print_hex_dump(KERN_INFO, "Client: Received [MMIO]: ",
-			       DUMP_PREFIX_ADDRESS, MBOX_BYTES_PER_LINE, 1,
-			       tdev->rx_buffer, MBOX_MAX_MSG_LEN, true);
+		print_hex_dump_bytes("Client: Received [MMIO]: ", DUMP_PREFIX_ADDRESS,
+				     tdev->rx_buffer, MBOX_MAX_MSG_LEN);
 	} else if (message) {
-		print_hex_dump(KERN_INFO, "Client: Received [API]: ",
-			       DUMP_PREFIX_ADDRESS, MBOX_BYTES_PER_LINE, 1,
-			       message, MBOX_MAX_MSG_LEN, true);
+		print_hex_dump_bytes("Client: Received [API]: ", DUMP_PREFIX_ADDRESS,
+				     message, MBOX_MAX_MSG_LEN);
 		memcpy(tdev->rx_buffer, message, MBOX_MAX_MSG_LEN);
 	}
 	spin_unlock_irqrestore(&tdev->lock, flags);