1 files changed, 15 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index a703b9e9aeb9..d868a11c94a5 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -62,6 +62,21 @@ Description:	CPU topology files that describe kernel limits related to
                 See Documentation/cputopology.txt for more information.
 
 
+What:           /sys/devices/system/cpu/probe
+                /sys/devices/system/cpu/release
+Date:           November 2009
+Contact:        Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description:    Dynamic addition and removal of CPU's.  This is not hotplug
+                removal, this is meant complete removal/addition of the CPU
+                from the system.
+
+                probe: writes to this file will dynamically add a CPU to the
+                system.  Information written to the file to add CPU's is
+                architecture specific.
+
+                release: writes to this file dynamically remove a CPU from
+                the system.  Information writtento the file to remove CPU's
+                is architecture specific.
 
 What:           /sys/devices/system/cpu/cpu#/node
 Date:           October 2009