Messages in this thread | | | Subject | Re: [RFC 4/4]x86: avoid tlbstate lock if no enough cpus | From | Shaohua Li <> | Date | Wed, 03 Nov 2010 15:19:55 +0800 |
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On Wed, 2010-11-03 at 15:12 +0800, Eric Dumazet wrote: > Le mercredi 03 novembre 2010 à 15:06 +0800, Shaohua Li a écrit : > > just don't want to include the non-present cpus here. I wonder why we > > haven't a variable to record online cpu number. > > What prevents a 256 cpus machine, to have 8 online cpus that all use the > same TLB vector ? > > (Max 32 vectors, so 8 cpus share each vector, settled at boot time) > > Forget about 'online', and think 'possible' ;) Hmm, the spread vectors to node already merged, how could the 8 cpus share a vector?
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