Sample_RCU_interface Read-copy-update

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rcu api communications between reader, updater, , reclaimer


the diagram on right shows how each api communicates among reader, updater, , reclaimer.


the rcu infrastructure observes time sequence of rcu_read_lock, rcu_read_unlock, synchronize_rcu, , call_rcu invocations in order determine when (1) synchronize_rcu invocations may return callers , (2) call_rcu callbacks may invoked. efficient implementations of rcu infrastructure make heavy use of batching in order amortize overhead on many uses of corresponding apis.








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