OK, I realize cpu_khz should not be constant. I wrote a cpufreq driver for Toshiba laptops that has two CPU speeds (1/2 and full) and that is managed via SMM. Can anyone tell me why cpu_khz occasionally doubles itself while the driver is in use? It starts at ~120000, then doubles to ~240000, then to ~480000, etc. However, this is over ~15 loads and unloads of the cpufreq target driver. Small cpu_khz variations would not bother anything wrt the cpufreq driver, but this is just plain incorrect for things like /proc/cpuinfo which also use cpu_khz. Is this a TSC issue (maybe related to SMM) or am I just doing something in the wrong place in the driver? Attached is the cpufreq part of the code, just a testing version. -- Ryan Underwood,