From 76b1ba7feda533a74c5874a1d15bb4039083efc8 Mon Sep 17 00:00:00 2001 From: Jisheng Zhang Date: Tue, 20 Oct 2015 16:02:39 +0800 Subject: [PATCH] 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 Acked-by: Baruch Siach Signed-off-by: Daniel Lezcano --- drivers/clocksource/timer-digicolor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clocksource/timer-digicolor.c b/drivers/clocksource/timer-digicolor.c index e73947f0f86d..a536eeb634d8 100644 --- a/drivers/clocksource/timer-digicolor.c +++ b/drivers/clocksource/timer-digicolor.c @@ -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)); }