linux-toradex.git/kernel/rcutorture.c, branch T20_LinuxImageV2.0Beta1_20121218

atomic: use

2011-07-26T23:49:47+00:00

This allows us to move duplicated code in 
(atomic_inc_not_zero() for now) to 

Signed-off-by: Arun Sharma 
Reviewed-by: Eric Dumazet 
Cc: Ingo Molnar 
Cc: David Miller 
Cc: Eric Dumazet 
Acked-by: Mike Frysinger 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check

2011-07-08T20:21:58+00:00

Since ca5ecddf (rcu: define __rcu address space modifier for sparse)
rcu_dereference_check use rcu_read_lock_held as a part of condition
automatically so callers do not have to do that as well.

Signed-off-by: Michal Hocko 
Acked-by: Paul E. McKenney 
Signed-off-by: Jiri Kosina

rcu: mark rcutorture boosting callback as being on-stack

2011-05-06T06:16:57+00:00

The CONFIG_DEBUG_OBJECTS_RCU_HEAD facility requires that on-stack RCU
callbacks be flagged explicitly to debug-objects using the
init_rcu_head_on_stack() and destroy_rcu_head_on_stack() functions.
This commit applies those functions to the rcutorture code that tests
RCU priority boosting.

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

rcu: make rcutorture version numbers available through debugfs

2011-05-06T06:16:56+00:00

It is not possible to accurately correlate rcutorture output with that
of debugfs.  This patch therefore adds a debugfs file that prints out
the rcutorture version number, permitting easy correlation.

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

rcu: eliminate unused boosting statistics

2011-05-06T06:16:55+00:00

The n_rcu_torture_boost_allocerror and n_rcu_torture_boost_afferror
statistics are not actually incremented anymore, so eliminate them.

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

rcu: avoid hammering sched with yet another bound RT kthread

2011-05-06T06:16:55+00:00

The scheduler does not appear to take kindly to having multiple
real-time threads bound to a CPU that is going offline.  So this
commit is a temporary hack-around to avoid that happening.

Signed-off-by: Paul E. McKenney 
Signed-off-by: Paul E. McKenney

rcutorture: Get rid of duplicate sched.h include

2011-03-04T16:05:17+00:00

linux/sched.h is included twice in kernel/rcutorture.c - once is enough.

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

rcu: add priority-inversion testing to rcutorture

2010-10-07T17:41:08+00:00

Add an optional test to force long-term preemption of RCU read-side
critical sections, controlled by new test_boost, test_boost_interval,
and test_boost_duration module parameters.  This is to be used to
test RCU priority boosting.

Signed-off-by: Paul E. McKenney

rcu: fix sparse errors in rcutorture.c

2010-09-23T16:16:42+00:00

Add the sparse __rcu address-space identifier and make a couple of
variables static.

Signed-off-by: Paul E. McKenney

rcutorture: add random preemption

2010-08-20T00:18:01+00:00

Add random preemption to help we to torture the preemptable rcu.

srcu_read_delay() also calls rcu_read_delay() for shorter delays.

Added comment to preempt_schedule() call indicating that no quiescent
states happen if preemption is disabled.

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