gp_duration 1686 kernel/rcu/tree.c unsigned long gp_duration; gp_duration 1697 kernel/rcu/tree.c gp_duration = rcu_state.gp_end - rcu_state.gp_start; gp_duration 1698 kernel/rcu/tree.c if (gp_duration > rcu_state.gp_max) gp_duration 1699 kernel/rcu/tree.c rcu_state.gp_max = gp_duration;