image/svg+xml
rcu_accelerate_cbs()
rcu_prepare_for_idle()
rcu_accelerate_cbs()
note_gp_changes()
rcu_advance_cbs()
__note_gp_changes()
call_rcu()
Wake up
grace-period
kernel thread
rcu_accelerate_cbs()
takedown_cpu()
rcutree_migrate_callbacks()
rcu_migrate_callbacks()
rcu_advance_cbs()
Leaf
Leaf
Leaf
Phase One
of Update