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diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 5eea46fefcb2..4fb76c0e8d30 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -520,3 +520,21 @@ Description: Control Symetric Multi Threading (SMT)
If control status is "forceoff" or "notsupported" writes
are rejected.
+
+What: /sys/devices/system/cpu/cpu#/power/energy_perf_bias
+Date: March 2019
+Contact: linux-pm@vger.kernel.org
+Description: Intel Energy and Performance Bias Hint (EPB)
+
+ EPB for the given CPU in a sliding scale 0 - 15, where a value
+ of 0 corresponds to a hint preference for highest performance
+ and a value of 15 corresponds to the maximum energy savings.
+
+ In order to change the EPB value for the CPU, write either
+ a number in the 0 - 15 sliding scale above, or one of the
+ strings: "performance", "balance-performance", "normal",
+ "balance-power", "power" (that represent values reflected by
+ their meaning), to this attribute.
+
+ This attribute is present for all online CPUs supporting the
+ Intel EPB feature.