rcu_watching_snap_in_eqs
if (WARN_ON_ONCE(rcu_watching_snap_in_eqs(snap)))
WARN_ON_ONCE(rcu_watching_snap_in_eqs(ct_rcu_watching_cpu(cpu)));
if (rcu_watching_snap_in_eqs(rdp->watching_snap)) {
if (rcu_watching_snap_in_eqs(snap))
rcu_watching_snap_in_eqs(ct_rcu_watching_cpu(cpu));