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Date:	Sat, 14 May 2011 21:14:26 -0700
From:	Yinghai Lu <>
CC:	Ingo Molnar <>,
Subject: Re: [GIT PULL rcu/next] rcu commits for 2.6.40

On 05/14/2011 11:34 AM, Paul E. McKenney wrote:
>> and do the inspection afterwards.
> And here is a lightly-tested patch, which applies on tip/core/rcu.
> This problem could account for both the long delays seen with e59fb312
> (Decrease memory-barrier usage based on semi-formal proof) and the
> shorter delays seen with a26ac245 (move TREE_RCU from softirq to kthread).

yes. it fixes the problem.

for 1024g system when hotadd mem enabled in kernel config

[   31.814803] cpu_dev_init done
[   35.437163] memory_dev_init done

even it is with gcc from opensuse 11.3


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