Messages in this thread Patch in this message | | | From | Daniel Lezcano <> | Subject | [PATCH 7/8] clocksource/drivers/digicolor: Prevent ftrace recursion | Date | Wed, 28 Oct 2015 14:11:32 +0100 |
| |
From: Jisheng Zhang <jszhang@marvell.com>
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> --- 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 e73947f0f..a536eeb 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)); } -- 1.9.1
| |