https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254532
Bug ID: 254532
Summary: hwpmc: sampling mode aliases non-functional on arm64
Product: Base System
Version: 13.0-STABLE
Hardware: arm64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Attempting to run a basic system-wide sampling mode profiling fails:
# pmcstat -S unhalted-cycles -O /tmp/sample.out
pmcstat: ERROR: Cannot allocate system-mode pmc with specification
"unhalted-cycles": Invalid argument
# uname -a
FreeBSD generic 13.0-RC3 FreeBSD 13.0-RC3 #0 n244697-16c1f81f11a: Fri Mar 12
09:29:50 UTC 2021
root@generic:/usr/obj/root/freebsd/arm64.aarch64/sys/GENERIC arm64
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