linux-kernel - [PATCH 2/2] tty: serial: qcom_geni

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Message-Id: <1651488314-19382-3-git-send-email-quic_vnivarth@quicinc.com>
Date:   Mon,  2 May 2022 16:15:14 +0530
From:   Vijaya Krishna Nivarthi <quic_vnivarth@...cinc.com>
To:     agross@...nel.org, bjorn.andersson@...aro.org,
        gregkh@...uxfoundation.org, jirislaby@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org
Cc:     quic_msavaliy@...cinc.com, quic_vtanuku@...cinc.com,
        Vijaya Krishna Nivarthi <quic_vnivarth@...cinc.com>
Subject: [PATCH 2/2] tty: serial: qcom_geni_serial: Disable MMIO tracing

Register read/write tracing is causing excessive
logging and filling the rtb buffer and effecting
performance.

Disabled MMIO tracing to disable register
read/write tracing.

Signed-off-by: Visweswara Tanuku <quic_vtanuku@...cinc.com>
Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@...cinc.com>
---
 drivers/tty/serial/qcom_geni_serial.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
index f496102..aa8facb 100644
--- a/drivers/tty/serial/qcom_geni_serial.c
+++ b/drivers/tty/serial/qcom_geni_serial.c
@@ -1,5 +1,11 @@
 // SPDX-License-Identifier: GPL-2.0
-// Copyright (c) 2017-2018, The Linux foundation. All rights reserved.
+/*
+ * Copyright (c) 2017-2018, The Linux foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+/* Disable MMIO tracing */
+#define __DISABLE_TRACE_MMIO__
 
 #include <linux/clk.h>
 #include <linux/console.h>
-- 
Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by the Linux Foundation.