linux-kernel - [PATCH v2 2/2] tracing: gpio: add Kconfig option for enabling/disabling trace events

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Message-Id: <1437068376-24617-3-git-send-email-tal.shorer@gmail.com>
Date:	Thu, 16 Jul 2015 20:39:36 +0300
From:	Tal Shorer <tal.shorer@...il.com>
To:	tal.shorer@...il.com, rostedt@...dmis.org
Cc:	mingo@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] tracing: gpio: add Kconfig option for enabling/disabling trace events

Add a new options to gpio Kconfig, CONFIG_GPIO_TRACING, that is used
for enabling/disabling compilation of gpio function trace events.

Signed-off-by: Tal Shorer <tal.shorer@...il.com>
---
 drivers/gpio/Kconfig        | 7 +++++++
 include/trace/events/gpio.h | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index c1e2ca3..2829e8e 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -88,6 +88,13 @@ config GPIO_SYSFS
 config GPIO_GENERIC
 	tristate
 
+config GPIO_TRACING
+	bool "gpio tracing"
+	depends on TRACING
+	help
+	  Enable tracing for gpio subsystem
+
+
 # put drivers in the right section, in alphabetical order
 
 config GPIO_DA9052
diff --git a/include/trace/events/gpio.h b/include/trace/events/gpio.h
index 927a8ad..09af636 100644
--- a/include/trace/events/gpio.h
+++ b/include/trace/events/gpio.h
@@ -1,6 +1,10 @@
 #undef TRACE_SYSTEM
 #define TRACE_SYSTEM gpio
 
+#ifndef CONFIG_GPIO_TRACING
+#define NOTRACE
+#endif
+
 #if !defined(_TRACE_GPIO_H) || defined(TRACE_HEADER_MULTI_READ)
 #define _TRACE_GPIO_H
 
-- 
2.4.3

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