?????? wrote:
Hi zhang:
my purpose is to check the cpu Actual power loss when cpu work in Deeper sleep(C4)??or Deep power down(C6)??.
as you say:"Which cstate will be entered is the responsibility of cpu idle state driver of OS," So which driver of moblin work on this function,and how can we change the cstate in usrspace of linux,the driver should have interface which we can use in my applications.
looking forward your answer
you fundamentally CANNOT change that state from userspace... because when you are executing in userspace, your computer is not idle and thus
cannot be in an idle (C) state...
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