[PATCH RFC v1 0/5] Reader end deboost testing

This series adds rcutorture coverage for the RCU priority-boosting "tardy
deboost" issue. The first 3 patches are Paul's and the next 2 are fixes I had
to make to the test, so that another patch series (I haven't posted yet) can
correctly be tested. I am posting just the test patches first in advance, which
can go in independently if we agree on the changes.

Joel Fernandes (2):
  rcutorture: tighten boost-WARN to exclude any implicit-reader context
  rcutorture: give async deboost mechanisms up to 500us before WARN

Paul E. McKenney (3):
  rcutorture: Abstract reader-segment dump into
    rcu_torture_dump_read_segs()
  rcutorture: Check for immediate deboosting at reader end
  rcutorture: Test RCU readers from hardware interrupt handlers

 kernel/rcu/rcu.h         |   7 ++
 kernel/rcu/rcutorture.c  | 257 +++++++++++++++++++++++++++------------
 kernel/rcu/tree_plugin.h |  32 ++++-
 3 files changed, 218 insertions(+), 78 deletions(-)

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2.34.1