Paul E. McKenney 80d02085d9 Revert "rcu: Decrease memory-barrier usage based on semi-formal proof" ...

This reverts commit e59fb3120b.

This reversion was due to (extreme) boot-time slowdowns on SPARC seen by
Yinghai Lu and on x86 by Ingo
.
This is a non-trivial reversion due to intervening commits.

Conflicts:

	Documentation/RCU/trace.txt
	kernel/rcutree.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

2011-05-19 23:25:29 +02:00

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