Messages in this thread | | | Date | Thu, 22 Jun 2023 06:37:51 -0700 | Subject | Re: [PATCH v2 2/2] mm/mmu_gather: send tlb_remove_table_smp_sync IPI only to MM CPUs | From | Dave Hansen <> |
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On 6/22/23 06:14, ypodemsk@redhat.com wrote: > I will send a new version with the local variable as you suggested > soon. > As for the config name, what about CONFIG_ARCH_HAS_MM_CPUMASK?
The confusing part about that name is that mm_cpumask() and mm->cpu_bitmap[] are defined unconditionally. So, they're *around* unconditionally but just aren't updated.
BTW, it would also be nice to have _some_ kind of data behind this patch.
Fewer IPIs are better I guess, but it would still be nice if you could say:
Before this patch, /proc/interrupts showed 123 IPIs/hour for an isolated CPU. After the approach here, it was 0.
... or something.
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