Differential D20859

Don't call vm_reserv_free_page() if PG_PCPU_CACHE is set.
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Authored by markj on Jul 4 2019, 7:28 PM.

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imp

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alc
dougm
kib

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rS349841: Elide the vm_reserv_free_page() call when PG_PCPU_CACHE is set.

Summary

Pages allocated from a per-CPU cache cannot belong to a reservation.
So, as an optimization, avoid the call when we know that the page was
allocated from a per-CPU cache.

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Event Timeline

markj created this revision.Jul 4 2019, 7:28 PM

Harbormaster completed remote builds in B25204: Diff 59413.Jul 4 2019, 7:28 PM

markj added reviewers: alc, dougm, kib.Jul 4 2019, 7:29 PM

alc accepted this revision.Jul 4 2019, 8:08 PM

This revision is now accepted and ready to land.Jul 4 2019, 8:08 PM

kib accepted this revision.Jul 4 2019, 8:44 PM

Closed by commit rS349841: Elide the vm_reserv_free_page() call when PG_PCPU_CACHE is set. (authored by markj). · Explain WhyJul 8 2019, 7:02 PM

This revision was automatically updated to reflect the committed changes.

markj added a commit: rS349841: Elide the vm_reserv_free_page() call when PG_PCPU_CACHE is set..

Herald added a subscriber: imp. · View Herald TranscriptJul 8 2019, 7:02 PM

Revision Contents
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Path

Size

head/

sys/

vm/

vm_page.c

7 lines

Diff 59544

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Don't call vm_reserv_free_page() if PG_PCPU_CACHE is set.ClosedPublicActions