[PATCH RFC tip/core/rcu 0/8] Waketorture, not for inclusion

From	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	[PATCH RFC tip/core/rcu 0/8] Waketorture, not for inclusion
Date	2016-06-16 00:30 +0200
Message-ID	<rKrtU-8sD-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hello!

And for your amusement, this series provides a waketorture module.  It is
intended to increase the probability of a heisenbug or three I have been
chasing for longer than I care to admit.  Should it someday actually
significantly increase that probability, I might consider submitting it
for acceptance.  In the meantime, for your amusement:

1.	Add a wakeup-torture module.

2.	Update scripting to accommodate waketorture.

3.	Don't kick kthreads unless grace period or request.

4.	Add utilization measurement.

5.	Add hrtimer support for fine-grained event scheduling.

6.	Make waketorture always hotplug the same CPU.

7.	Make waketorture kill test if no hotpluggable CPUs.

8.	Affinity waiter tasks away from hotpluggable CPU.

							Thanx, Paul

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

 kernel/rcu/Makefile                                              |    3 
 kernel/rcu/tree.c                                                |    3 
 kernel/rcu/waketorture.c                                         |  567 +++++++++-
 lib/Kconfig.debug                                                |   18 
 tools/testing/selftests/rcutorture/bin/kvm-recheck-wake.sh       |   39 
 tools/testing/selftests/rcutorture/bin/kvm-recheck.sh            |    2 
 tools/testing/selftests/rcutorture/bin/kvm.sh                    |    2 
 tools/testing/selftests/rcutorture/configs/wake/CFLIST           |    1 
 tools/testing/selftests/rcutorture/configs/wake/CFcommon         |    2 
 tools/testing/selftests/rcutorture/configs/wake/SH               |   19 
 tools/testing/selftests/rcutorture/configs/wake/SH.boot          |    1 
 tools/testing/selftests/rcutorture/configs/wake/STI              |   19 
 tools/testing/selftests/rcutorture/configs/wake/STI.boot         |    1 
 tools/testing/selftests/rcutorture/configs/wake/ver_functions.sh |   43 
 14 files changed, 701 insertions(+), 19 deletions(-)

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[PATCH RFC tip/core/rcu 0/8] Waketorture, not for inclusion "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:30 +0200
  [PATCH tip/core/rcu 7/8] torture: Make waketorture kill test if no hotpluggable CPUs "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:30 +0200
  [PATCH tip/core/rcu 6/8] torture: Make waketorture always hotplug the same CPU "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:30 +0200
  [PATCH tip/core/rcu 4/8] waketorture: Add utilization measurement "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:30 +0200
  [PATCH tip/core/rcu 8/8] torture: Affinity waiter tasks away from hotpluggable CPU "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:30 +0200
  [PATCH tip/core/rcu 1/8] waketorture: Add a wakeup-torture module "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:30 +0200
  [PATCH tip/core/rcu 5/8] waketorture: Add hrtimer support "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2016-06-16 00:40 +0200

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