linux-toradex.git/tools/testing/selftests/rcutorture, branch v4.4.112

Merge branches 'doc.2015.10.06a', 'percpu-rwsem.2015.10.06a' and 'torture.2015.10.06a' into HEAD

2015-10-07T23:06:25+00:00

doc.2015.10.06a:  Documentation updates.
percpu-rwsem.2015.10.06a:  Optimization of per-CPU reader-writer semaphores.
torture.2015.10.06a:  Torture-test updates.

torture: Forgive non-plural arguments

2015-10-06T18:28:26+00:00

This commit allows --bootarg instead of --bootargs, --config instead of
--configs, and --qemu-arg instead of --qemu-args.  For those cases where
a native English speaker might auto-correct the argument to be incorrect.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

locktorture: Add torture tests for percpu_rwsem

2015-10-06T18:24:56+00:00

This commit adds percpu_rwsem tests based on the earlier rwsem tests.

Signed-off-by: Paul E. McKenney 
Cc: Oleg Nesterov 
Cc: Davidlohr Bueso 
Reviewed-by: Josh Triplett

locktorture: Support rtmutex torturing

2015-10-06T18:24:40+00:00

Real time mutexes is one of the few general primitives
that we do not have in locktorture. Address this -- a few
considerations:

o To spice things up, enable competing thread(s) to become
rt, such that we can stress different prio boosting paths
in the rtmutex code. Introduce a ->task_boost callback,
only used by rtmutex-torturer. Tasks will boost/deboost
around every 50k (arbitrarily) lock/unlock operations.

o Hold times are similar to what we have for other locks:
only occasionally having longer hold times (per ~200k ops).
So we roughly do two full rt boost+deboosting ops with
short hold times.

Signed-off-by: Davidlohr Bueso 
Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

Merge branches 'doc.2015.07.15a' and 'torture.2015.07.15a' into HEAD

2015-08-04T15:42:02+00:00

doc.2015.07.15a: Documentation updates.
torture.2015.07.15a: Torture-test updates.

rcu: Remove CONFIG_RCU_CPU_STALL_INFO

2015-07-17T21:58:44+00:00

The CONFIG_RCU_CPU_STALL_INFO has been default-y for a couple of
releases with no complaints, so it is time to eliminate this Kconfig
option entirely, so that the long-form RCU CPU stall warnings cannot
be disabled.  This commit does just that.

Signed-off-by: Paul E. McKenney

rcutorture: Enable lockdep-RCU on TASKS01

2015-07-15T21:47:20+00:00

Currently none of the RCU-tasks scenarios enables lockdep-RCU, which
causes bugs to be missed.  This commit therefore enables lockdep-RCU
on TASKS01.

Signed-off-by: Paul E. McKenney

Merge branches 'array.2015.05.27a', 'doc.2015.05.27a', 'fixes.2015.05.27a', 'hotplug.2015.05.27a', 'init.2015.05.27a', 'tiny.2015.05.27a' and 'torture.2015.05.27a' into HEAD

2015-05-27T20:00:49+00:00

array.2015.05.27a:  Remove all uses of RCU-protected array indexes.
doc.2015.05.27a:  Docuemntation updates.
fixes.2015.05.27a:  Miscellaneous fixes.
hotplug.2015.05.27a:  CPU-hotplug updates.
init.2015.05.27a:  Initialization/Kconfig updates.
tiny.2015.05.27a:  Updates to Tiny RCU.
torture.2015.05.27a:  Torture-testing updates.

rcutorture: Allow repetition factors in Kconfig-fragment lists

2015-05-27T20:00:00+00:00

Although it is currently possible to run the same test in parallel,
'--config "TINY01 TINY01 TINY01"' can get a bit verbose, especially
if you want to run 48 instances of TINY01 in parallel.  This commit
therefore allows prefixing the Kconfig fragment with a repeat count,
for example, '--config "48*TINY01"' to run 48 instances in parallel.
At least assuming that you have 48 CPUs and also gave '--cpus 48'.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett

rcutorture: Display "make oldconfig" errors

2015-05-27T20:00:00+00:00

The current rcutorture scripting fails to dump out errors from
"make oldconfig", so this commit addresses this issue.

Signed-off-by: Paul E. McKenney 
Reviewed-by: Josh Triplett