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Groups > linux.kernel > #1251421

[PATCH 3/7] clocksource: pistachio: fix ftrace

From Jisheng Zhang <jszhang@marvell.com>
Newsgroups linux.kernel
Subject [PATCH 3/7] clocksource: pistachio: fix ftrace
Date 2015-10-20 10:20 +0200
Message-ID <qlAjf-6os-5@gated-at.bofh.it> (permalink)
References <qlA9z-6df-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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

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

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
---
 drivers/clocksource/time-pistachio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/time-pistachio.c b/drivers/clocksource/time-pistachio.c
index 18d4266..bba6799 100644
--- a/drivers/clocksource/time-pistachio.c
+++ b/drivers/clocksource/time-pistachio.c
@@ -67,7 +67,8 @@ static inline void gpt_writel(void __iomem *base, u32 value, u32 offset,
 	writel(value, base + 0x20 * gpt_id + offset);
 }
 
-static cycle_t pistachio_clocksource_read_cycles(struct clocksource *cs)
+static cycle_t notrace
+pistachio_clocksource_read_cycles(struct clocksource *cs)
 {
 	struct pistachio_clocksource *pcs = to_pistachio_clocksource(cs);
 	u32 counter, overflw;
-- 
2.6.1

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Thread

[PATCH 0/7] clocksource: add missing notrace attribute Jisheng Zhang <jszhang@marvell.com> - 2015-10-20 10:10 +0200
  [PATCH 3/7] clocksource: pistachio: fix ftrace Jisheng Zhang <jszhang@marvell.com> - 2015-10-20 10:20 +0200
  [PATCH 5/7] clocksource: vf_pit_timer: don't trace pit_read_sched_clock() Jisheng Zhang <jszhang@marvell.com> - 2015-10-20 10:20 +0200
  [PATCH 2/7] clocksource: samsung_pwm_timer: fix ftrace Jisheng Zhang <jszhang@marvell.com> - 2015-10-20 10:20 +0200
  Re: [PATCH 0/7] clocksource: add missing notrace attribute Daniel Lezcano <daniel.lezcano@linaro.org> - 2015-10-26 19:00 +0100
    Re: [PATCH 0/7] clocksource: add missing notrace attribute Jisheng Zhang <jszhang@marvell.com> - 2015-10-27 03:30 +0100

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