On 12/16/2015 07:32 PM, Paolo Bonzini wrote:
> rcu_read_lock cannot change rcu_gp_ongoing from true to false
> (the previous value of p_rcu_reader->ctr is zero), hence
> there is no need to check p_rcu_reader->waiting and wake up
> a concurrent synchronize_rcu.
>
> While at it mark the wakeup as u
rcu_read_lock cannot change rcu_gp_ongoing from true to false
(the previous value of p_rcu_reader->ctr is zero), hence
there is no need to check p_rcu_reader->waiting and wake up
a concurrent synchronize_rcu.
While at it mark the wakeup as unlikely in rcu_read_unlock.
Signed-off-by: Paolo Bonzini
