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Differential D15921

Attach dev.cpu nodes on SMT cores, using only the first found thread
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Authored by jhibbits on Jun 20 2018, 4:53 AM.
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nwhitehorn
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rS335442: Attach dev.cpu nodes on powerpc SMT cores, using only the first found thread
Summary

In order to use cpufreq(4), a dev.cpu attachment must be created. If the IBM property is found denoting SMT, attach only to the first thread setup, so that a cpufreq device can bind.

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rS FreeBSD src repository - subversion
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jhibbits created this revision.Jun 20 2018, 4:53 AM
Herald added a subscriber: imp. · View Herald TranscriptJun 20 2018, 4:53 AM
Harbormaster completed remote builds in B17473: Diff 44127.Jun 20 2018, 4:53 AM
nwhitehorn accepted this revision.Jun 20 2018, 4:59 AM

Approved if you fix the #if 0 bit.

sys/dev/ofw/ofw_cpu.c
199 ↗(On Diff #44127)

Probably this part can just be deleted?

This revision is now accepted and ready to land.Jun 20 2018, 4:59 AM
jhibbits added inline comments.Jun 20 2018, 1:23 PM
sys/dev/ofw/ofw_cpu.c
199 ↗(On Diff #44127)

Yes it can. I had kept it in just for reference, and forgot to delete it.

Closed by commit rS335442: Attach dev.cpu nodes on powerpc SMT cores, using only the first found thread (authored by jhibbits). · Explain WhyJun 20 2018, 1:30 PM
This revision was automatically updated to reflect the committed changes.

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head/
sys/
dev/
ofw/
41 lines

Diff 44147

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head/sys/dev/ofw/ofw_cpu.c

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