Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 12 May 2011 08:08:07 +0000 (01:08 -0700)
committerIngo Molnar <mingo@elte.hu>
Thu, 19 May 2011 21:25:29 +0000 (23:25 +0200)
commit80d02085d99039b3b7f3a73c8896226b0cb1ba07
treec310902423ecb00effadcb59c60cbf118d4037cb
parent11c476f31a0fabc6e604da5b09a6590b57c3fb20
Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"

This reverts commit e59fb3120becfb36b22ddb8bd27d065d3cdca499.

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>
Documentation/RCU/trace.txt
kernel/rcutree.c
kernel/rcutree.h
kernel/rcutree_plugin.h
kernel/rcutree_trace.c