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clocksource/drivers/vf_pit_timer: 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 the pit_read_sched_clock() function. Fix this by adding a notrace attribute to this function. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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@ -52,7 +52,7 @@ static inline void pit_irq_acknowledge(void)
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__raw_writel(PITTFLG_TIF, clkevt_base + PITTFLG);
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__raw_writel(PITTFLG_TIF, clkevt_base + PITTFLG);
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}
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}
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static u64 pit_read_sched_clock(void)
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static u64 notrace pit_read_sched_clock(void)
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{
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{
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return ~__raw_readl(clksrc_base + PITCVAL);
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return ~__raw_readl(clksrc_base + PITCVAL);
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}
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}
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