On 05-Jun-23 3:04 PM, Peter Zijlstra wrote: > On Mon, Jun 05, 2023 at 11:27:31AM +0200, Peter Zijlstra wrote: >> 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. > > Oh, I might've misread that last bit.. TYPE_RAW is always the big core, > it will not magic the thing. If you want little events you gotta > manually find the little pmu. "manually find the little pmu" ... which was being done by linear searching? Thanks, Ravi
