user/sven/linux.git/kernel/rcupdate.c, branch v3.2

kernel: Map most files to use export.h instead of module.h

2011-10-31T13:20:12Z

The changed files were only including linux/module.h for the EXPORT_SYMBOL infrastructure, and nothing else. Revector them onto the isolated export header for faster compile times. Nothing to see here but a whole lot of instances of: -#include +#include This commit is only changing the kernel dir; next targets will probably be mm, fs, the arch dirs, etc. Signed-off-by: Paul Gortmaker

rcu: Add event-tracing for RCU callback invocation

2011-09-29T04:38:12Z

There was recently some controversy about the overhead of invoking RCU callbacks. Add TRACE_EVENT()s to obtain fine-grained timings for the start and stop of a batch of callbacks and also for each callback invoked. Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney

rcu: Abstract common code for RCU grace-period-wait primitives

2011-09-29T04:36:42Z

Pull the code that waits for an RCU grace period into a single function, which is then called by synchronize_rcu() and friends in the case of TREE_RCU and TREE_PREEMPT_RCU, and from rcu_barrier() and friends in the case of TINY_RCU and TINY_PREEMPT_RCU. Signed-off-by: Paul E. McKenney

atomic: use

2011-07-26T23:49:47Z

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: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings

2011-05-06T06:16:57Z

Avoid additional multiple-warning confusion in memory-corruption scenarios. Signed-off-by: Paul E. McKenney Reviewed-by: Josh Triplett

rcu: Enable DEBUG_OBJECTS_RCU_HEAD from !PREEMPT

2011-05-06T06:16:57Z

The prohibition of DEBUG_OBJECTS_RCU_HEAD from !PREEMPT was due to the fixup actions. So just produce a warning from !PREEMPT. Signed-off-by: Mathieu Desnoyers Signed-off-by: Paul E. McKenney Reviewed-by: Josh Triplett

rcu: add comment saying why DEBUG_OBJECTS_RCU_HEAD depends on PREEMPT.

2011-03-04T16:05:41Z

The build will break if you change the Kconfig to allow DEBUG_OBJECTS_RCU_HEAD and !PREEMPT, so document the reasoning near where the breakage would occur. Signed-off-by: Paul E. McKenney

rcupdate: remove dead code

2011-03-04T16:05:33Z

DEBUG_OBJECTS_RCU_HEAD depends on PREEMPT, so #ifndef CONFIG_PREEMPT is totally useless in kernel/rcupdate.c. Signed-off-by: WANG Cong Cc: Paul E. McKenney Signed-off-by: Paul E. McKenney

Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu

2010-10-07T07:43:11Z

rcu: move check from rcu_dereference_bh to rcu_read_lock_bh_held

2010-10-05T21:03:02Z

As suggested by Linus, push the irqs_disabled() down to the rcu_read_lock_bh_held() level so that all callers get the benefit of the correct check. Signed-off-by: Paul E. McKenney