On Tue, Oct 15, 2024 at 04:36:34PM -0500, Mario Limonciello wrote: > From: Perry Yuan <perry.yuan@xxxxxxx> > > Add new feature bit that indicates support for workload based > heuristic feedback to OS for scheduling decisions. > When the bit set, threads are classified during runtime into > enumerated classes. The classes represent thread performance/power > characteristics that may benefit from special scheduling behaviors. > > Signed-off-by: Perry Yuan <perry.yuan@xxxxxxx> > Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx> > --- > arch/x86/include/asm/cpufeatures.h | 1 + > arch/x86/kernel/cpu/scattered.c | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h > index cea1ed82aeb4..3e8e67b8ec7a 100644 > --- a/arch/x86/include/asm/cpufeatures.h > +++ b/arch/x86/include/asm/cpufeatures.h > @@ -474,6 +474,7 @@ > #define X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT (21*32+ 4) /* Clear branch history at vmexit using SW loop */ > #define X86_FEATURE_FAST_CPPC (21*32 + 5) /* AMD Fast CPPC */ > #define X86_FEATURE_HETERO_CORE_TOPOLOGY (21*32 + 6) /* Heterogeneous Core Topology */ > +#define X86_FEATURE_WORKLOAD_CLASS (21*32 + 7) /* Workload Classification */ As already discussed: X86_FEATURE_AMD_WORKLOAD_CLASS -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette