[PATCH tip/core/rcu 0/17] Torture-test updates for v5.12

Paul E. McKenney
2021-01-06T17:16:29Z

Hello!

This series provides torture-test updates, and must be applied on top
of the SRCU series.

1. Add testing for RCU's global memory ordering.

2. Add debug output for wrong-CPU warning.

3. Allow summarization of verbose output.

4. Require entire stutter period be post-boot.

5. Make synctype[] and nsynctype be static global.

6. Make rcu_torture_fakewriter() use blocking wait primitives.

7. Add fuzzed hrtimer-based sleep functions.

8. Use torture_hrtimeout_jiffies() to avoid busy-waits.

9. Make stutter use torture_hrtimeout_*() functions.

10. Use hrtimers for reader and writer delays.

11. Make refscale throttle high-rate printk()s.

12. Throttle VERBOSE_TOROUT_*() output.

13. Make object_debug also double call_rcu() heap object.

14. Clean up after torture-test CPU hotplugging.

15. Maintain torture-specific set of CPUs-online books.

16. Break affinity of kthreads last running on outgoing CPU.

17. Add rcutree.use_softirq=0 to RUDE01 and TASKS01.

Thanx, Paul

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

Documentation/admin-guide/kernel-parameters.txt | 14
include/linux/torture.h | 27 +
kernel/rcu/rcutorture.c | 246 ++++++++----
kernel/rcu/refscale.c | 25 -
kernel/scftorture.c | 6
kernel/torture.c | 184 +++++++-
tools/testing/selftests/rcutorture/configs/rcu/RUDE01.boot | 1
tools/testing/selftests/rcutorture/configs/rcu/TASKS01.boot | 1
8 files changed, 400 insertions(+), 104 deletions(-)