Hello!

This RFC series is the beginnings of a hazard-pointer torture-test module.

1.	Add a hazptrtorture.c torture test.

2.	Add testing of on-stack hazptr_ctx structures.

3.	Add microsecond-scale sleep in readers.

4.	Enable system-independent CPU overcommit.

Future extensions include cross-kthread and cross-context hazard-pointer
acquisition/release, along with who knows what all else.

						Thanx, Paul

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

 b/include/linux/torture.h                                            |    2 
 b/kernel/rcu/Kconfig.debug                                           |   12 
 b/kernel/rcu/Makefile                                                |    1 
 b/kernel/rcu/hazptrtorture.c                                         |  684 ++++++++++
 b/kernel/rcu/update.c                                                |    3 
 b/tools/testing/selftests/rcutorture/bin/kvm.sh                      |    6 
 b/tools/testing/selftests/rcutorture/configs/hazptr/CFLIST           |    2 
 b/tools/testing/selftests/rcutorture/configs/hazptr/CFcommon         |    2 
 b/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT        |   17 
 b/tools/testing/selftests/rcutorture/configs/hazptr/NOPREEMPT.boot   |    1 
 b/tools/testing/selftests/rcutorture/configs/hazptr/PREEMPT          |   14 
 b/tools/testing/selftests/rcutorture/configs/hazptr/ver_functions.sh |   40 
 kernel/rcu/hazptrtorture.c                                           |   55 
 13 files changed, 823 insertions(+), 16 deletions(-)