On Wed, Mar 10, 2021 at 11:46:44AM -0800, Ricardo Neri wrote: > But this series provides the use case, right? Kan's patches handle PMU > counters > that may differ cross types of CPUs. In patch 2, get_hybrid_params() > needs to check first if X86_FEATURE_HYBRID_CPU is enabled before > querying the hybrid parameters. Otherwise, we would need to rely on the > maximum level of CPUID, which may not be reliable.
On Wed, Mar 10, 2021 at 11:33:54AM -0800, Srinivas Pandruvada wrote: > We are working on changes to P-State driver for hybrid CPUs using this > define. They are still work in progress. > But this patch can be submitted later with our set of changes. Answering to both with a single mail: I don't have a problem with X86_FEATURE_HYBRID_CPU - I simply don't want to show "hybrid_cpu" in /proc/cpuinfo unless there's a valid use case for userspace to know that it is running on a hybrid CPU. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette