Messages in this thread | | | Subject | Re: [PATCH 1/2] x86, apic: optimize cpu traversal in __assign_irq_vector() using domain membership | From | Suresh Siddha <> | Date | Thu, 21 Jun 2012 14:53:18 -0700 |
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On Thu, 2012-06-21 at 10:31 +0200, Alexander Gordeev wrote: > On Tue, Jun 19, 2012 at 04:43:30PM -0700, Suresh Siddha wrote: > > Use the irq_cfg's old_domain to track the visited domains and optimize > > the cpu traversal while finding a free vector in the given cpumask. > > > > NOTE: We can also optimize the search by using for_each_cpu and skip the > > current cpu, if it is not the first cpu in the mask returned by the > > vector_allocation_domain(). But re-using the cfg->old_domain to track > > the visited domains will be slightly faster. > > Sorry for the dealy, Suresh. > > You also need to kick out vector_allocation_domain's return value in all other > apic drivers.
this patch is on top of -tip which already has your patch which consolidates different vector_allocation_domains to relatively few. I double checked and don't seem to left out any other apic driver.
thanks, suresh
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