Hi, I successfully compiled PowerTop 2.7 for CyanogenMod 11.0 (Android KitKat) on Nexus 4 which has ARM running kernel version is 3.4. Perf support is enabled with perf tool accessible via adb. If I am correct, powertop now supports ARM, and following error tells me that it's trying to run profiling as per x86. Also, the perf error doesn't make sense, as I do have proper support enabled. I would appreciate any help with this. Also, there is a small error in patch file *update_androidmk.patch*, after line number 417, there should be *#include <stdlib.h>, *without this the patch doesn't work correctly. 127|root@mako:/ # powertop powertop modprobe cpufreq_stats failedmodprobe msr failedCannot load from file /data/local/powertop/saved_results.powertop RAPL device for cpu 0 Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). RAPL device for cpu 0 Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). Devfreq not enabled trace-cmd: Not a directory unknown op '{' PowerTOP v2.7 needs the kernel to support the 'perf' subsystem as well as support for trace points in the kernel: CONFIG_PERF_EVENTS=y CONFIG_PERF_COUNTERS=y failedmodprobe msr failedCannot load from file /data/local/powertop/sCONFIG_TRACEPOINTS=yp CONFIG_TRACING=ycpu 0 Thanks, Chetan Patil