Find out the C-state of a Processor

Find out the C-state of a Processor

Is there a way in Linux to know exactly which state a core or a processor is residing in ??I saw some pointers to Mointor/MWAIT Instructions. Is there some documentation on these instructions related to power management particularly.May be someone can point to C code where these instructions are used

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just for future reader's reference: this question has been followed up here.--Roman

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