mperf_delta 42 arch/x86/kernel/cpu/aperfmperf.c u64 mperf, mperf_delta; mperf_delta 52 arch/x86/kernel/cpu/aperfmperf.c mperf_delta = mperf - s->mperf; mperf_delta 58 arch/x86/kernel/cpu/aperfmperf.c if (mperf_delta == 0) mperf_delta 64 arch/x86/kernel/cpu/aperfmperf.c s->khz = div64_u64((cpu_khz * aperf_delta), mperf_delta);