On 05/19/2011 02:37 PM, tip-bot for Paul E. McKenney wrote: > Commit-ID: 80d02085d99039b3b7f3a73c8896226b0cb1ba07 > Gitweb: http://git.kernel.org/tip/80d02085d99039b3b7f3a73c8896226b0cb1ba07 > Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> > AuthorDate: Thu, 12 May 2011 01:08:07 -0700 > Committer: Ingo Molnar <mingo@xxxxxxx> > CommitDate: Thu, 19 May 2011 23:25:29 +0200 > > 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@xxxxxxx> > --- > Documentation/RCU/trace.txt | 17 ++++-- > kernel/rcutree.c | 130 ++++++++++++++++++++++++------------------ > kernel/rcutree.h | 9 ++- > kernel/rcutree_plugin.h | 7 +- > kernel/rcutree_trace.c | 12 ++-- > 5 files changed, 102 insertions(+), 73 deletions(-) > current tip/master that have this reverting and without setting DEBUG_LOCKING_API_SELFTESTS still get delay [ 35.419453] cpu_dev_init done [ 128.981770] memory_dev_init done should take only 3 or 4 seconds. Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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