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Differential D56546

hmp(4): introduce Heterogeneous MultiProcessing support
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Authored by minsoochoo0122_proton.me on Tue, Apr 21, 10:21 AM.

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Subscribers

koinec_yahoo.co.jp

Details

Reviewers

imp
olce
adrian

Summary

Add initial support for HMP.

The hmp(4) framework sits between scheduler and providers. It aims to
forward information from provider to scheduler to enable hybrid
scheduling.

Support for controlling hardware from scheduler (e.g. Arm SCMI) will be
added later.

For now, disable this option by default and enable when it becomes
stable enough.

Sponsored by: FreeBSD Foundation

Signed-off-by: Minsoo Choo <minsoochoo0122@proton.me>

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Passed

Unit

No Test Coverage

Build Status

Buildable 72403
Build 69286: arc lint + arc unit

Event Timeline

minsoochoo0122_proton.me created this revision.Tue, Apr 21, 10:21 AM

Herald added subscribers: olce, imp. · View Herald TranscriptTue, Apr 21, 10:21 AM

minsoochoo0122_proton.me requested review of this revision.Tue, Apr 21, 10:21 AM

Harbormaster completed remote builds in B72399: Diff 175963.Tue, Apr 21, 10:21 AM

minsoochoo0122_proton.me mentioned this in D54674: sys: introduce hmp(4).Tue, Apr 21, 10:26 AM

minsoochoo0122_proton.me added a child revision: D56547: hmp(4): add provider interface.

minsoochoo0122_proton.me added reviewers: imp, olce, adrian.Tue, Apr 21, 10:28 AM

minsoochoo0122_proton.me added a subscriber: koinec_yahoo.co.jp.

Changes from D56547:

Moved from struct pcpu to DPCPU so we can avoid options HMP on pcpu.
Reworked scores system. Since scheduler only cares about perf and eff scores, we don't need other capabilities.
Capacities don't need atomic operation since it is written once on boot.
Added sysctls.

Move sysctl

Harbormaster completed remote builds in B72403: Diff 175967.Tue, Apr 21, 10:36 AM

@koinec_yahoo.co.jp Could you please work on intelhfi based on this patch series?

Thank you very much for improving the HMP code and creating the manual.

Understood. I will proceed with supporting this version.

Update sysctl

Harbormaster completed remote builds in B72454: Diff 176224.Wed, Apr 22, 10:46 PM

alonso added a subscriber: alonso.Thu, Apr 23, 9:14 PM

Revision Contents
Changeset List

Path

Size

sys/

amd64/

conf/

1 line

conf/

9 lines

1 line

1 line

kern/

270 lines

sys/

159 lines

Diff 175967

sys/amd64/conf/GENERIC

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sys/conf/NOTES

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sys/conf/files

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sys/conf/options

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sys/kern/subr_hmp.c

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sys/sys/hmp.h

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