Matt Helsley (on Wed, 11 Jan 2006 21:26:08 -0800) wrote:
>On Thu, 2006-01-12 at 14:29 +1100, Keith Owens wrote:
>> An alternative patch that requires no locks and does not even require
>> RCU is in http://marc.theaimsgroup.com/?l=linux-kernel&m=113392370322545&w=2
>>
>
> Interesting. Might the 'inuse' flags suffer from bouncing due to false
>sharing?
It would, but that was the least of my worries. Algorithm correctness
first, then tune it. If necessary it could be converted to a per cpu
variable, as long as the timing between creating the per cpu variables
and invoking callbacks from hotplug cpu was correct.
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