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Commit 8183003e authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

cpufreq: Update scaling_cur_freq documentation 



Commit f8475cef "x86: use common aperfmperf_khz_on_cpu() to
calculate KHz using APERF/MPERF" modified the way the scaling_cur_freq
cpufreq policy attribute in sysfs is handled on contemporary
Intel-based x86 systems, so update the documentation to reflect
that change.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent fab24dcc

Documentation/admin-guide/pm/cpufreq.rst

+6 −6
Original line number Diff line number Diff line
@@ -269,16 +269,16 @@ are the following: 
``scaling_cur_freq``

	Current frequency of all of the CPUs belonging to this policy (in kHz).



	For the majority of scaling drivers, this is the frequency of the last

	P-state requested by the driver from the hardware using the scaling

	In the majority of cases, this is the frequency of the last P-state

	requested by the scaling driver from the hardware using the scaling

	interface provided by it, which may or may not reflect the frequency

	the CPU is actually running at (due to hardware design and other

	limitations).



	Some scaling drivers (e.g. |intel_pstate|) attempt to provide

	information more precisely reflecting the current CPU frequency through

	this attribute, but that still may not be the exact current CPU

	frequency as seen by the hardware at the moment.

	Some architectures (e.g. ``x86``) may attempt to provide information

	more precisely reflecting the current CPU frequency through this

	attribute, but that still may not be the exact current CPU frequency as

	seen by the hardware at the moment.



``scaling_driver``

	The scaling driver currently in use.