Page MenuHomeFreeBSD

cpu: New cpu_get_pcpuid(), retrieves internal CPU ID
ClosedPublic

Authored by olce on Jun 27 2026, 1:44 AM.
Tags
None
Referenced Files
Unknown Object (File)
Sat, Aug 15, 5:48 PM
Unknown Object (File)
Fri, Aug 14, 9:43 PM
Unknown Object (File)
Thu, Aug 13, 12:14 AM
Unknown Object (File)
Wed, Aug 12, 7:50 PM
Unknown Object (File)
Tue, Aug 11, 6:17 PM
Unknown Object (File)
Tue, Aug 11, 8:07 AM
Unknown Object (File)
Tue, Aug 11, 4:35 AM
Unknown Object (File)
Tue, Aug 11, 4:10 AM
Subscribers

Details

Summary

It is a handy shortcut that will be used extensively in
hwpstate_intel(4) and hwpstate_amd(4).

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 74320
Build 71203: arc lint + arc unit

Event Timeline

olce requested review of this revision.Jun 27 2026, 1:44 AM
jhb added inline comments.
sys/sys/cpu.h
45

This can now use __BUS_ACCESSOR_DEFAULT() to return NULL by default, which will also mean you can start using cpu_has_pcpu in the pstate drivers to check for the ivar being valid vs manually calling BUS_READ_IVAR. It wouldn't be a functional change, just a cosmetic change that spells things more typically. (Unrelated to this commit, just a nice cleanup you can do as a separate commit)

60

This can also now use __BUS_ACCESSOR_DEFAULT() with a default value of -1.

This revision is now accepted and ready to land.Jul 3 2026, 3:06 PM

Thanks, will do some followup next week.