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Date: Mon, 29 Mar 2010 16:01:07 -0700
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To: Andi Kleen <andi@firstfloor.org>
CC: Christoph Lameter <cl@linux-foundation.org>,
       David Miller <davem@davemloft.net>, netdev@vger.kernel.org,
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Subject: Re: Add PGM protocol support to the IP stack
References: <alpine.DEB.2.00.1003181245050.23010@router.home> <87tysccjrn.fsf@basil.nowhere.org> <alpine.DEB.2.00.1003220916170.15360@router.home> <20100322163609.GZ20695@one.firstfloor.org> <alpine.DEB.2.00.1003221146260.17230@router.home> <877hp4i76d.fsf@basil.nowhere.org> <alpine.DEB.2.00.1003221300180.17230@router.home> <20100322185310.GA20695@one.firstfloor.org>
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On 03/22/2010 11:53 AM, Andi Kleen wrote:
> 
> There's just no portable atomic64_t. Ok maybe you can use the socket lock
> to synchronize all the counts if they are only per socket.
> 

In 2.6.34 there is (although some arches which could support it natively
don't as of yet... but that's fixable.)  See lib/atomic64.c.

	-hpa