[PATCH tip/core/rcu 0/11] rcu: suppress GP start to simplifyforce_quiescent_state()

[Paul E. McKenney]

Hello!

This patch series makes a sequence of changes that prevent a new RCU
grace period from starting while force_quiescent_state() is the the
process of trying to cause the prior grace period to complete.  This
simplifies the code and eliminates numerous painful race conditions.

							Thanx, Paul

 b/include/linux/rcutiny.h |   12 +++
 b/include/linux/rcutree.h |    3 
 b/kernel/rcutorture.c     |   80 +++++++++++++++++++++++-
 b/kernel/rcutree.c        |   28 +++++---
 b/kernel/rcutree.h        |    3 
 b/kernel/rcutree_plugin.h |   20 +++++-
 kernel/rcutree.c          |  153 +++++++++++++++++++++-------------------------
 kernel/rcutree.h          |   15 ++--
 8 files changed, 211 insertions(+), 103 deletions(-)
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