RCU_TASK_STALL_TIMEOUT  499 kernel/rcu/update.c static int rcu_task_stall_timeout __read_mostly = RCU_TASK_STALL_TIMEOUT;
RCU_TASK_STALL_TIMEOUT  829 kernel/rcu/update.c 	if (rcu_task_stall_timeout != RCU_TASK_STALL_TIMEOUT)