powernow man page on DragonFly

powernow man page on DragonFly

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POWERNOW(4)		 BSD Kernel Interfaces Manual		   POWERNOW(4)

NAME
     powernow — PowerNow! Technology support

SYNOPSIS
     To compile this driver into the kernel, place the following line in your
     kernel configuration file:

	   options CPU_ENABLE_POWERNOW

     To load this driver as a module at boot time, place the following line in
     loader.conf(5):

	   powernow_load="YES"

DESCRIPTION
     The powernow driver provides support for the PowerNow! Technology present
     in AMD K8 CPUs.

     If the CPU is supported powernow creates the following variables in the
     machdep.powernow branch of the sysctl(3) MIB.

	   frequency.available	The list of frequencies supported by powernow
				for the CPU (read only).

	   frequency.current	The current CPU frequency (read only).

	   frequency.target	The target CPU frequency (read/write).

HISTORY
     The powernow driver first appeared in DragonFly 2.3.

BSD				March 17, 2011				   BSD

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