o How can I see where RCU is currently used in the Linux kernel?
- Search for "rcu_read_lock", "call_rcu", and "synchronize_kernel".
+ Search for "rcu_read_lock", "rcu_read_unlock", "call_rcu",
+ "rcu_read_lock_bh", "rcu_read_unlock_bh", "call_rcu_bh",
+ "synchronize_rcu", and "synchronize_net".
o What guidelines should I follow when writing code that uses RCU?