[PATCH RFC tip/core/rcu 0/2] NOCB kthread economization patches

[Paul E. McKenney]

Hello!

This series provides a couple of patches that reduce the number of rcuo
kthreads in cases where nr_cpu_ids is larger than the actual number of
online CPUs.

1.	Preparation patch that rationalizes RCU's creation of early-boot
	kthreads.

2.	Instead of creation rcuo kthreads for each possible CPU, create
	them only for those CPUs that have come online at least once
	since boot.

							Thanx, Paul

------------------------------------------------------------------------

 b/kernel/rcu/tree.c        |    8 ++-
 b/kernel/rcu/tree.h        |    5 +-
 b/kernel/rcu/tree_plugin.h |  105 ++++++++++++++++++++++++++++++++++++---------
 3 files changed, 95 insertions(+), 23 deletions(-)

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