INFRA Signal 202
Raspberry Pi AXI PMU Driver Under Review For The Mainline Linux Kernel
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A driver for the Broadcom AXI performance monitoring unit, covering all Raspberry Pi models from 1 through 5, is under review for mainline Linux kernel inclusion.
Mainline inclusion would give engineers working with Raspberry Pi hardware native kernel-level performance monitoring without relying on out-of-tree patches. This has been a gap in upstream kernel support for the platform.
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The driver covers the Broadcom AXI PMU across Raspberry Pi 1 through Raspberry Pi 5.
A Google engineer is leading the effort to get this previously out-of-tree driver mainlined.
The patch set is currently under review, not yet merged.
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