On 2021-07-26 07:43:33 [+0000], Zhang, Qiang wrote: > Operation of sleep is not allowed in RCU read critical area, If > after acquiring a rt-spinlock , try to acquire another one > rt-spinlock, This may cause sleep, and trigger RCU warning. > > Is there a problem with my analysis or something I missed? This warning is suppressed on RT. Same as on CONFIG_PREEMPT when a task gets preempted while in a rcu_read_lock() section. > Thanks > Qiang Sebastian
