Differential D24238

powerpc/booke: Add pte_find_next() to find the next in-use PTE
ClosedPublic
Actions

Authored by jhibbits on Mar 31 2020, 2:39 PM.

Tags

None

Referenced Files

	Unknown Object (File)
	Wed, Jul 1, 9:23 AM

	Unknown Object (File)
	Thu, Jun 25, 2:00 AM

	Unknown Object (File)
	Wed, Jun 24, 8:02 AM

	Unknown Object (File)
	Wed, Jun 24, 6:23 AM

	Unknown Object (File)
	Tue, Jun 23, 9:55 AM

	Unknown Object (File)
	Sun, Jun 21, 5:43 PM

	Unknown Object (File)
	Sat, Jun 20, 2:51 PM

	Unknown Object (File)
	Fri, Jun 19, 8:54 PM

Subscribers

Details

Reviewers

Group Reviewers

Commits

rS359792: powerpc/booke: Add pte_find_next() to find the next in-use PTE

Summary

Iterating over VM_MIN_ADDRESS->VM_MAXUSER_ADDRESS can take a very long
time iterating one page at a time (2**(log_2(SIZE)-12) operations),
yielding possibly several days or even weeks on 64-bit Book-E, even for
a largely empty, which can happen when swapping out a process by
vmdaemon. Speed this up by instead finding the next PTE at or equal to
the given VA.

Diff Detail

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 30221
Build 28007: arc lint + arc unit

Event Timeline

jhibbits created this revision.Mar 31 2020, 2:39 PM

Harbormaster completed remote builds in B30208: Diff 70057.Mar 31 2020, 2:40 PM

jhibbits added a parent revision: D24220: powerpc/booke: Change Book-E 64-bit pmap to 4-level table.Mar 31 2020, 2:43 PM

Fix the build

Harbormaster completed remote builds in B30210: Diff 70059.Mar 31 2020, 2:54 PM

Fix 32-bit boot. Tested in qemu.

Harbormaster completed remote builds in B30221: Diff 70076.Mar 31 2020, 9:19 PM

Works on X5000 and RB800.

This revision is now accepted and ready to land.Apr 10 2020, 9:32 PM

Closed by commit rS359792: powerpc/booke: Add pte_find_next() to find the next in-use PTE (authored by jhibbits). · Explain WhyApr 11 2020, 12:17 AM

This revision was automatically updated to reflect the committed changes.

jhibbits added a commit: rS359792: powerpc/booke: Add pte_find_next() to find the next in-use PTE.

Herald added a subscriber: imp. · View Herald TranscriptApr 11 2020, 12:17 AM

Revision Contents
Changeset List

Path

Size

sys/

powerpc/

booke/

9 lines

29 lines

45 lines

Diff 70076

sys/powerpc/booke/pmap.c

Loading...

sys/powerpc/booke/pmap_32.c

Loading...

sys/powerpc/booke/pmap_64.c

Loading...