On Mon, Jun 05, 2023 at 08:10:15AM +0100, Mark Rutland wrote: > How does this work on x86? Do you have pseudo-PMUs for PERF_TYPE_HARDWARE and > PERF_TYPE_RAW ? Generic code maps TYPE_HARDWARE and TYPE_HW_CACHE to TYPE_RAW for a first go, only if that fails it will try the actual type. And x86 has the (first) CPU PMU has TYPE_RAW, on hybrid, it will transparently pick the right actual PMU. That said; given that this commit has been tagged twice now, I suppose I should go revert it and we'll try again after a more thorough audit.