Seonglae ChoRead-Copy Update
RCU principle: concurrent read access with write updates
Constraints
- The protected resource must be accessed via a pointer.
- The kernel cannot go to sleep within a region protected by RCU.
Widely-used for read-mostly data structures
커널 자료구조에 특화된 primitive
rcu_read_lock(), rcu_read_unlock(), rcu_deference(), rcu_assign_pointer(), synchronize_rcu(),
call_rcu()
