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/macosx-10.5.8/xnu-1228.15.4/osfmk/i386/
H A Dtsc.c186 uint64_t prfsts; local
188 prfsts = rdmsr64(IA32_PERF_STS);
189 tscGranularity = (uint32_t)bitfield(prfsts, 44, 40);
190 N_by_2_bus_ratio = (prfsts & bit(46)) != 0;

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