[PATCH tip/core/rcu 0/18] Torture-test updates for v5.8

[Paul E. McKenney]

Hello!

This series contains a variety of torture-test updates:

1.	Add KCSAN stubs.

2.	Make kvm-recheck-rcu.sh handle truncated lines.

3.	Mark data-race potential for rcu_barrier() test statistics.

4.	locktorture.c: Fix if-statement empty body warnings, courtesy
	of Randy Dunlap.

5.	Default enable RCU list lockdep debugging with PROVE_RCU,
	courtesy of Madhuparna Bhowmik.

6.	Add flag to produce non-busy-wait task stalls.

7.	Right-size TREE10 CPU consumption.

8.	Allow rcutorture to starve grace-period kthread.

9.	Add --kcsan argument to top-level kvm.sh script.

10.	Make --kcsan argument also create a summary.

11.	Make rcu_fwds and rcu_fwd_emergency_stop static, courtesy of
	Jason Yan.

12.	Eliminate duplicate #CHECK# from ConfigFragment.

13.	Abstract application of additional Kconfig options.

14.	Allow --kconfig options to override --kcsan defaults.

15.	Allow scenario-specific Kconfig options to override CFcommon.

16.	Save a few lines by using config_override_param initially.

17.	Add a --kasan argument.

18.	Convert ULONG_CMP_LT() to time_before().

							Thanx, Paul

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

 Documentation/admin-guide/kernel-parameters.txt           |   12 +
 include/linux/torture.h                                   |    2 
 kernel/rcu/Kconfig.debug                                  |   11 -
 kernel/rcu/rcu.h                                          |    2 
 kernel/rcu/rcutorture.c                                   |   63 +++++++--
 kernel/rcu/tree.c                                         |   27 ++++
 tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh  |   22 +++
 tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh |   16 ++
 tools/testing/selftests/rcutorture/bin/kvm-recheck.sh     |    9 +
 tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh  |   90 +++++++-------
 tools/testing/selftests/rcutorture/bin/kvm.sh             |   17 ++
 tools/testing/selftests/rcutorture/configs/rcu/TREE10     |    2 
 12 files changed, 198 insertions(+), 75 deletions(-)