[GIT PULL rcu/next] Additional RCU commit for 4.18

[Paul E. McKenney]

Hello, Ingo,

This additional v4.18 pull request contains a single commit that fell
through the cracks:

1.	Provide early rcu_cpu_starting() callback for the benefit of the
	x86/mtrr code, which needs RCU to be available on incoming CPUs
	earlier than has been the case in the past.

	http://lkml.kernel.org/r/20180525191802.GA7141@xxxxxxxxxxxxxxxxxx

All of these changes have been subjected to 0day Test Robot and -next
testing, and are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo

for you to fetch changes up to f64c6013a2029316ea552f99823d116ee5f5f955:

  rcu/x86: Provide early rcu_cpu_starting() callback (2018-05-22 16:12:26 -0700)

----------------------------------------------------------------
Peter Zijlstra (1):
      rcu/x86: Provide early rcu_cpu_starting() callback

 arch/x86/kernel/cpu/mtrr/main.c | 4 ++++
 include/linux/rcupdate.h        | 1 -
 include/linux/rcutiny.h         | 1 +
 include/linux/rcutree.h         | 1 +
 kernel/rcu/tree.c               | 9 +++++++++
 5 files changed, 15 insertions(+), 1 deletion(-)