Hi Thomas, I read your original LKML posting in [1]. [ QUOTE ] Currently, Daniel Lezcano seems to be working on an intrusive change of not using the power_usage value at all for choosing a C-state: [4] https://lkml.org/lkml/2012/12/14/155 As I could not find any of these patches in any git trees to be merged for 3.8... [ /QUOTE ] You can find the patches at LKML ([2] and [3]) or patchwork ([4] and [5]). As a Linux-Next "customer" I know about Daniel's work for-next [5] but I did not found any other GIT repository of him. Striving through Daniel's other GIT repos I found idlestat [6] and powerdebug [7] tools which I want to test. ( So, thank you for your email! ) Have fun! Regards, - Sedat - [0] http://marc.info/?l=linux-acpi&m=135808048905350&w=2 [1] https://lkml.org/lkml/2012/12/14/153 [2] https://lkml.org/lkml/2012/12/14/149 [3] https://patchwork.kernel.org/patch/1878691/ [4] https://patchwork.kernel.org/patch/1878701/ [5] http://git.linaro.org/gitweb?p=people/dlezcano/cpuidle-next.git [6] http://git.linaro.org/gitweb?p=people/dlezcano/idlestat.git;a=summary [7] http://git.linaro.org/gitweb?p=people/dlezcano/powerdebug.git;a=summary