linux-kernel - [PATCH tip/core/rcu 0/13] Torture-test updates for 4.2

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Date:	Tue, 12 May 2015 15:57:53 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
	josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
	rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
	dvhart@...ux.intel.com, fweisbec@...il.com, oleg@...hat.com,
	bobby.prani@...il.com
Subject: [PATCH tip/core/rcu 0/13] Torture-test updates for 4.2

Hello!

This series contains torture-test updates:

1.	Use correct locking primitive, thus avoiding deadlock, courtesy
	of Alexey Kodanev.

2.	Exchange TREE03 and TREE04 geometries in order to improve bug-location
	rates.

3.	Exchange TREE03 and TREE08 NR_CPUS, speed up CPU hotplug to further
	improve bug-location rates.

4.	Allow negative values of nreaders to in order to oversubscribe
	the CPUs, again to improve bug-location rates.

5.	Change longdelay_us to longdelay_ms in order to better reflect
	reality.  (Not that gcc cares, but people reading the code just
	might.)

6.	Replace open-coded memory barriers with the shiny new
	smp_store_release() and smp_load_acquire() primitives.

7.	Test SRCU cleanup code path in order to improve test coverage.

8.	Avoid explicitly setting CONFIG_TASKS_RCU, given that it is
	now set implicitly based on other configuration options.

9.	Update configuration fragments from CONFIG_RCU_FANOUT_EXACT to
	the new rcutree.rcu_fanout_exact= boot parameter.

10.	Make rcutorture scripts force RCU_EXPERT so that they can still
	build the needed kernel configurations.

11.	Update TREE_RCU-kconfig.txt to describe new kernel-parameter
	setup.

12.	Make torture scripts display "make oldconfig" errors

13.	Allow repetition factors in Kconfig-fragment lists.  Because
	typing 48 repetitions of "TINY02" is getting old.

							Thanx, Paul

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

 b/kernel/locking/locktorture.c                                 |   14 -
 b/kernel/rcu/rcutorture.c                                      |  103 ++++++----
 b/tools/testing/selftests/rcutorture/bin/configinit.sh         |    2 
 b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh        |    4 
 b/tools/testing/selftests/rcutorture/bin/kvm.sh                |   25 +-
 b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-N        |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P        |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/SRCU-P.boot   |    2 
 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS01       |    5 
 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS02       |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TASKS03       |    2 
 b/tools/testing/selftests/rcutorture/configs/rcu/TINY02        |    2 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE01        |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02        |    2 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE02-T      |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE03        |    8 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot   |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04        |    8 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE05        |    4 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06        |    4 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE06.boot   |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE07        |    4 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08        |    6 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T      |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08-T.boot |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE08.boot   |    1 
 b/tools/testing/selftests/rcutorture/configs/rcu/TREE09        |    1 
 b/tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt  |   36 +--
 28 files changed, 148 insertions(+), 94 deletions(-)

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