1. bb0a56e [CPUFREQ] Move x86 drivers to drivers/cpufreq/ by Dave Jones · 14 years ago[Renamed from arch/x86/kernel/cpu/cpufreq/mperf.h]
  2. a2fed57 x86, cpufreq: Add APERF/MPERF support for AMD processors by Mark Langsdorf · 15 years ago