libpmc: add APERF/MPERF support for AMD CPUs
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Authored by anascime_amd.com on Aug 4 2026, 6:39 PM.

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ali_mashtizadeh.com

Summary

Extend libpmc(3) to expose the AMD APERF/MPERF counters added to
hwpmc(4) in the companion kernel change, so userland consumers
(pmcstat(8), etc.) can allocate and read these events by name.

Signed-off-by: Anderson Nascimento <anascime@amd.com>
Sponsored by: AMD

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rG FreeBSD src repository

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Build Status

Buildable 75364
Build 72247: arc lint + arc unit

Event Timeline

anascime_amd.com created this revision.Aug 4 2026, 6:39 PM

Herald added a reviewer: ali_mashtizadeh.com. · View Herald TranscriptAug 4 2026, 6:39 PM

Herald added a subscriber: imp. · View Herald Transcript

anascime_amd.com requested review of this revision.Aug 4 2026, 6:39 PM

Harbormaster completed remote builds in B75364: Diff 183395.Aug 4 2026, 6:39 PM

anascime_amd.com added a parent revision: D58647: hwpmc: add MPERF/APERF MSR support for AMD/Intel CPUs.Aug 4 2026, 6:49 PM

anascime_amd.com added a child revision: D58649: libpmc: Add pmc.perf.3 manpage.

anascime_amd.com abandoned this revision.Aug 4 2026, 9:18 PM

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lib/

libpmc/

libpmc.c

31 lines

Diff 183395

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libpmc: add APERF/MPERF support for AMD CPUsAbandonedPublicActions