哪里有关于CPU C-state P-state的介绍

能具体介绍下你所谓的C-state， P-state的什么概念么？我跟软硬件工程师都确认过，我们没有这样的一个概念

Hello,

   The concepts of C/P-states originally come from  ACPI (Advanced Configuration and Power Interface) specification, Cx talk about processor sleep status, while P about running status. please check wiki for more details:

   http://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface

   As you may know , ARM is actively working on promotion ACPI on ARM/ARM64,  please check the following links

     ACPI on ARM - Linaro Wiki

                 https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI

     ACPI for ARM ?

                 http://lwn.net/Articles/574439/

     ARM, SBSA, UEFI, and ACPI

                 http://lwn.net/Articles/584123/

     industry spec:

         http://www.acpi.info/presentations/ACPI_Overview.pdf

         http://www.acpi.info/  

Hope it's helpful for you.

Thanks,

Yuping