On Fri, Feb 05, 2021 at 06:03:09PM +0800, Zhimin Feng wrote: > diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c > index 6c9c342dd0e5..bc50f4a1a7c0 100644 > --- a/kernel/time/tick-common.c > +++ b/kernel/time/tick-common.c > @@ -26,6 +26,7 @@ > * Tick devices > */ > DEFINE_PER_CPU(struct tick_device, tick_cpu_device); > +EXPORT_SYMBOL_GPL(tick_cpu_device); > /* > * Tick next event: keeps track of the tick time > */ Oh heck no. Modules have no business what so ever accessing this.