The new visibility of RCU processing
The new visibility of RCU processing
Posted Oct 11, 2012 17:33 UTC (Thu) by kjp (guest, #39639)Parent article: The new visibility of RCU processing
Why are there three threads?
Posted Oct 11, 2012 18:14 UTC (Thu)
by PaulMcKenney (✭ supporter ✭, #9624)
[Link]
In theory, a single thread could handle all the RCU flavors, but when I tried this the code got quite ugly.
The new visibility of RCU processing
There is one thread for each flavor of RCU, which means three on CONFIG_PREEMPT=y kernels (rcu_bh, rcu_preempt, and rcu_sched) and two on CONFIG_PREEMPT=n kernels (rcu_bh and rcu_sched, with rcu_preempt mapping onto rcu_sched).