Differential D17942

acpica: support parsing of arm64 affinity in acpi_pxm.c
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Authored by jchandra on Nov 11 2018, 2:40 AM.

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Reviewers

andrew
jhb
markj

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Commits

rS352497: MFC r341743-r341744
rS341743: acpica: support parsing of arm64 affinity in acpi_pxm.c

Summary

ACPI SRAT table on arm64 uses GICC entries to provide CPU locality information. These entries uses a AcpiProcessorUid to identify the cpu (unlike on x86 where entries have an APIC ID).

Update acpi_pxm.c to extend the cpus_add/cpus_find/cpus_get_info functions to be able to handle AcpiProcessorUid, and then use it when parsing ACPI_SRAT_GICC_AFFINITY entry for arm64.

Add dev/acpica/acpi_pxm.c to arm64 compilation if acpi is enabled.

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rS FreeBSD src repository - subversion

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Buildable 20884

Event Timeline

jchandra created this revision.Nov 11 2018, 2:40 AM

Herald added subscribers: emaste, andrew, imp. · View Herald TranscriptNov 11 2018, 2:40 AM

Harbormaster completed remote builds in B20748: Diff 50277.Nov 11 2018, 2:40 AM

jchandra added reviewers: andrew, jhb, arm64.Nov 11 2018, 2:41 AM

jchandra retitled this revision from acpica: support parsing of arm64 affinity acpi_pxm.c to acpica: support parsing of arm64 affinity in acpi_pxm.c.

andrew added a reviewer: markj.Nov 13 2018, 10:38 AM

markj added inline comments.Nov 15 2018, 10:26 PM

sys/dev/acpica/acpi_pxm.c
247	It doesn't really matter here, but this should be imin().
315	"APIC ID" looks like the wrong term.

Thanks for the review, will update the diff.

sys/dev/acpica/acpi_pxm.c
247	This is a bug (had the Linux behavior in mind) - I should use imax() here.
315	Yes, will fix.

Addressed markj's comments.

use the UID instead of APIC id in prints for arm64
the comment on 'max' is already handled in preceding commit

Also fixed one issue - in arm64 cpu_add was checking last_cpu limit incorrectly.

Harbormaster completed remote builds in B20884: Diff 50579.Nov 19 2018, 1:46 AM

This revision was not accepted when it landed; it landed in state Needs Review.Dec 8 2018, 7:32 PM

Closed by commit rS341743: acpica: support parsing of arm64 affinity in acpi_pxm.c (authored by jchandra). · Explain Why

This revision was automatically updated to reflect the committed changes.

jchandra added a commit: rS352497: MFC r341743-r341744.Sep 18 2019, 10:55 PM

Revision Contents
Changeset List

Path

Size

sys/

conf/

1 line

dev/

acpica/

64 lines

Diff 50579

sys/conf/files.arm64

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sys/dev/acpica/acpi_pxm.c

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