linux-kernel - [PATCH 2/7] clocksource: samsung_pwm

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Date:	Tue, 20 Oct 2015 16:02:35 +0800
From:	Jisheng Zhang <jszhang@...vell.com>
To:	<daniel.lezcano@...aro.org>, <tglx@...utronix.de>,
	<baruch@...s.co.il>, <baohua@...nel.org>,
	<srinivas.kandagatla@...il.com>, <maxime.coquelin@...com>,
	<patrice.chotard@...com>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Jisheng Zhang <jszhang@...vell.com>
Subject: [PATCH 2/7] clocksource: samsung_pwm_timer: fix ftrace

Currently samsung_pwm_timer can be used as a scheduler clock, we properly
marked samsung_read_sched_clock() as notrace. But we then call another
function samsung_clocksource_read() that _wasn't_ notrace.

This patch fix this by adding notrace attribute to the
samsung_clocksource_read() function.

Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
---
 drivers/clocksource/samsung_pwm_timer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/samsung_pwm_timer.c b/drivers/clocksource/samsung_pwm_timer.c
index bc90e13..9502bc4 100644
--- a/drivers/clocksource/samsung_pwm_timer.c
+++ b/drivers/clocksource/samsung_pwm_timer.c
@@ -307,7 +307,7 @@ static void samsung_clocksource_resume(struct clocksource *cs)
 	samsung_time_start(pwm.source_id, true);
 }
 
-static cycle_t samsung_clocksource_read(struct clocksource *c)
+static cycle_t notrace samsung_clocksource_read(struct clocksource *c)
 {
 	return ~readl_relaxed(pwm.source_reg);
 }
-- 
2.6.1

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