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Prefer the use of vm_page_domain() to vm_phys_domain()
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Authored by alc on Jan 6 2021, 7:10 PM.

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Summary

When we already have the vm page in hand, use vm_page_domain() instead of vm_phys_domain(). The former has a trivial constant-time implementation whereas the latter iterates over the mem_affinity array. Since both implementations are inlined, this change to just two call sites reduces the code size on amd64 by 320 bytes.

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R10 FreeBSD src repository
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Event Timeline

alc requested review of this revision.Jan 6 2021, 7:10 PM
alc created this revision.

As a note, this code goes with pv_locks patch (AFAIR).

This revision is now accepted and ready to land.Jan 6 2021, 7:15 PM