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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
alonso
imp
koinec_yahoo.co.jp
olce

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
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Build Status
Buildable 73140
Build 70023: 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.
minsoochoo0122_proton.me added a comment.Tue, Apr 21, 10:31 AM

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.
minsoochoo0122_proton.me updated this revision to Diff 175967.Tue, Apr 21, 10:36 AM

Move sysctl

Harbormaster completed remote builds in B72403: Diff 175967.Tue, Apr 21, 10:36 AM
minsoochoo0122_proton.me added a comment.Tue, Apr 21, 11:14 AM

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

koinec_yahoo.co.jp added a comment.Wed, Apr 22, 11:56 AM

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

Understood. I will proceed with supporting this version.

minsoochoo0122_proton.me updated this revision to Diff 176224.Wed, Apr 22, 10:46 PM

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
minsoochoo0122_proton.me updated this revision to Diff 177915.Sat, May 16, 3:32 AM
  • Remove dynamic and throttle flags as they are not needed anymore
  • Add hmp_lowest_capacity_cpu()
Harbormaster completed remote builds in B73140: Diff 177915.Sat, May 16, 3:33 AM

Revision Contents
Changeset List

PathSize
sys/
amd64/
conf/
1 line
conf/
9 lines
1 line
1 line
kern/
249 lines
sys/
105 lines

Diff 177915

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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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