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clocksource/drivers/digicolor: Prevent ftrace recursion 

Having a traceable function in the sched_clock() path leads to a recursion
within ftrace and a kernel crash.

We should not trace digicolor_timer_sched_read() function. Fix this by adding
the notrace attribute to this function.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
hifive-unleashed-5.1
Jisheng Zhang 2015-10-20 16:02:39 +08:00 committed by Daniel Lezcano
parent bd859a44b2
commit 76b1ba7fed
1 changed files with 1 additions and 1 deletions
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2
drivers/clocksource/timer-digicolor.c
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@ -143,7 +143,7 @@ static irqreturn_t digicolor_timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static u64 digicolor_timer_sched_read(void)
static u64 notrace digicolor_timer_sched_read(void)
{
return ~readl(dc_timer_dev.base + COUNT(TIMER_B));
}