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perf/arm_dsu: Support DSU-120
authorRobin Murphy <robin.murphy@arm.com>
Mon, 15 Dec 2025 13:04:59 +0000 (13:04 +0000)
committerWill Deacon <will@kernel.org>
Tue, 6 Jan 2026 21:27:40 +0000 (21:27 +0000)
commit85c0dbd8b6e2ca5e672560c7cd86801bffa0d884
tree0409b4243119420f22d41c4032d2f795833cd151tree
parent0113affc91014a14251890c3af8f2bade1c20222commit | diff
perf/arm_dsu: Support DSU-120

DSU-120 has the same system register interface as previous DSUs, but
no longer offers a dedicated cycle counter. While this is not directly
discoverable via PMCR, the PMCCNTR register is still defined to exist
with RAZ/WI behaviour, allowing for a straightforward heuristic.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
drivers/perf/arm_dsu_pmu.c diff | blob | blame | history
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