* Ingo Molnar wrote: > i've done some further cleanups: made it .config configurable > (CONFIG_RTC_HISTOGRAM), moved the latency-histogram construction code > into separate functions to make it more apparent that there is no > impact to the normal codepaths. Patch attached. i've attached another update with a few more smaller details fixed: - only print the histogram if a /dev/rtc using application indeed used it to get interrupts. This removes bogus printouts triggered by hwclock. - skip the first RTC interrupt from the histogram - most of the /dev/rtc applications do not handle the first event very well, skewing the histogram. Ingo