[PATCH tip/core/rcu 0/3] signed overflow, virtualizationoptimizations, deadlock avoidance

[Paul E. McKenney]

Hello!

This patchset adds a few more commits to the list:

1.	Rework check_cpu_stall to avoid signed overflow.
2.	Provide an RCU API for better detection of running in a
	guest OS (thanks to Gleb Natapov).
3.	Permit rcu_read_unlock() to be called while holding one
	of the runqueue locks in response to a lockdep splat,
	quite possibly from Valdis Kletnieks.

For a testing-only version of this patchset from git, please see the
following subject-to-rebase branch:

git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu.git rcu/testing

							Thanx, Paul

 b/include/linux/rcutiny.h |    8 +++++
 b/include/linux/rcutree.h |   10 +++++++
 b/kernel/rcutree.c        |   13 +++++----
 b/kernel/rcutree.h        |    5 ---
 b/kernel/rcutree_plugin.h |   64 ++++++++++++++--------------------------------
 kernel/rcutree.c          |   45 ++++++++++----------------------
 6 files changed, 61 insertions(+), 84 deletions(-)
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