Messages in this thread | | | Date | Wed, 30 Jul 2008 02:13:58 +0200 | From | Andi Kleen <> | Subject | Re: [PATCH 2/2] x86: implement multiple queues for smp function call IPIs |
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On Tue, Jul 29, 2008 at 04:32:57PM -0700, Jeremy Fitzhardinge wrote: > This adds 8 queues for smp_call_function(), in order to avoid a
Now that we have per CPU IDT and there's no global bottleneck anymore I think it would be actually fine to use more than 8 vectors. 32 or 64 might be a better default.
> void native_send_call_func_ipi(cpumask_t mask) > { > cpumask_t allbutself; > + unsigned queue = smp_processor_id() % CONFIG_GENERIC_SMP_QUEUES;
Does this really always run with preemption disabled?
Did I miss it but where is the per vector lock?
-Andi
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