image/svg+xml ->qsmask &= ~->grpmask rcu_watching_snap_save() rcu_watching_snap_recheck() Leaf RCU read-side critical section rcutree_report_cpu_dead() rcu_cleanup_dying_idle_cpu() ->qsmaskinitnext Leaf RCU read-side critical section rcutree_report_cpu_starting() ->qsmaskinitnext Leaf