pmc: hwpmc multiplex rejection test
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Authored by raghavendra.kt_amd.com on Jun 18 2026, 7:06 AM.

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mhorne
markj
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afscoelho_gmail.com
ali_mashtizadeh.com

Summary

Negative-path multiplex regression test: build a (cores + 1)-event
group with no PMC_F_GROUP_MUX, expect commit to return ENOSPC.

Sized off probe_core_pmcs() so it adapts to any AMD Zen variant
(6 PMCs on Zen2/3/4, 6 on Zen5 core, etc.).

Sponsored by: AMD
Signed-off-by: Raghavendra K T <raghavendra.kt@amd.com>

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rG FreeBSD src repository

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Buildable 73967
Build 70850: arc lint + arc unit

Event Timeline

raghavendra.kt_amd.com requested review of this revision.Jun 18 2026, 7:06 AM

raghavendra.kt_amd.com created this revision.

Harbormaster completed remote builds in B73967: Diff 179984.Jun 18 2026, 7:06 AM

raghavendra.kt_amd.com added a parent revision: D57638: tools/regression/pmc: hwpmc grouping regression test.Jun 18 2026, 7:06 AM

raghavendra.kt_amd.com added a child revision: D57640: tools/regression/pmc: hwpmc multiplex positive-path test.

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tools/

regression/

pmc/

pmc_mux_test.c

181 lines

Diff 179984

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tools/regression/pmc/pmc_mux_test.c

tools/regression/pmc: hwpmc multiplex rejection testNeeds ReviewPublicActions