Hi, We have done some experiment with idle injection on Intel platforms. The idea is to use the increasingly power efficient package level C-states for power capping and passive thermal control.
Documentation is included in the patch to explain the theory of operation, performance implication, calibration, scalability, and user interface. Please refer to the following file for more details. Documentation/thermal/intel_powerclamp.txt Arjan van de Ven created the original idea and driver, I have been refining driver in hope that they can be to be useful beyond a proof of concept. Jacob Pan (3): tick: export nohz tick idle symbols for module use x86/nmi: export local_touch_nmi() symbol for modules PM: Introduce Intel PowerClamp Driver Documentation/thermal/intel_powerclamp.txt | 307 +++++++++++ arch/x86/kernel/nmi.c | 1 + drivers/thermal/Kconfig | 10 + drivers/thermal/Makefile | 1 + drivers/thermal/intel_powerclamp.c | 766 ++++++++++++++++++++++++++++ kernel/time/tick-sched.c | 2 + 6 files changed, 1087 insertions(+) create mode 100644 Documentation/thermal/intel_powerclamp.txt create mode 100644 drivers/thermal/intel_powerclamp.c -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
