From 0522424ecb333c0874c4e74bc053dd662bed40df Mon Sep 17 00:00:00 2001 From: Kristen Carlson Accardi Date: Wed, 28 Jan 2015 15:03:28 -0800 Subject: intel_pstate: Add num_pstates to sysfs Add a sysfs interface to display the total number of supported pstates. This value is independent of whether turbo has been enabled or disabled. Signed-off-by: Kristen Carlson Accardi Signed-off-by: Rafael J. Wysocki --- Documentation/cpu-freq/intel-pstate.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'Documentation/cpu-freq') diff --git a/Documentation/cpu-freq/intel-pstate.txt b/Documentation/cpu-freq/intel-pstate.txt index 7767ce6756be..655750743fb0 100644 --- a/Documentation/cpu-freq/intel-pstate.txt +++ b/Documentation/cpu-freq/intel-pstate.txt @@ -41,6 +41,10 @@ controlling P state selection. These files have been added to is supported by hardware that is in the turbo range. This number is independent of whether turbo has been disabled or not. + num_pstates: displays the number of pstates that are supported + by hardware. This number is independent of whether turbo has + been disabled or not. + For contemporary Intel processors, the frequency is controlled by the processor itself and the P-states exposed to software are related to performance levels. The idea that frequency can be set to a single -- cgit v1.2.3