Hi all,

After merging the rcu tree, today's linux-next build (htmldocs) produced
this warning:

kernel/rcu/tree.c:3824: warning: expecting prototype for start_poll_state_synchronize_rcu(). Prototype was for start_poll_synchronize_rcu() instead

Introduced by commit

  7f9a26bbfff2 ("rcu: Provide polling interfaces for Tree RCU grace periods")

-- 
Cheers,
Stephen Rothwell