1 files changed, 50 insertions, 1 deletions

diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
index 7a16fe1e2270..9fe91c02ee40 100644
--- a/Documentation/ABI/testing/sysfs-devices-memory
+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -6,7 +6,6 @@ Description:
                 internal state of the kernel memory blocks. Files could be
                 added or removed dynamically to represent hot-add/remove
                 operations.
-
 Users:          hotplug memory add/remove tools
                 https://w3.opensource.ibm.com/projects/powerpc-utils/
 
@@ -19,6 +18,56 @@ Description:
                 This is useful for a user-level agent to determine
                 identify removable sections of the memory before attempting
                 potentially expensive hot-remove memory operation
+Users:          hotplug memory remove tools
+                https://w3.opensource.ibm.com/projects/powerpc-utils/
+
+What:           /sys/devices/system/memory/memoryX/phys_device
+Date:           September 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/phys_device
+                is read-only and is designed to show the name of physical
+                memory device.  Implementation is currently incomplete.
 
+What:           /sys/devices/system/memory/memoryX/phys_index
+Date:           September 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/phys_index
+                is read-only and contains the section ID in hexadecimal
+                which is equivalent to decimal X contained in the
+                memory section directory name.
+
+What:           /sys/devices/system/memory/memoryX/state
+Date:           September 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/state
+                is read-write.  When read, it's contents show the
+                online/offline state of the memory section.  When written,
+                root can toggle the the online/offline state of a removable
+                memory section (see removable file description above)
+                using the following commands.
+                # echo online > /sys/devices/system/memory/memoryX/state
+                # echo offline > /sys/devices/system/memory/memoryX/state
+
+                For example, if /sys/devices/system/memory/memory22/removable
+                contains a value of 1 and
+                /sys/devices/system/memory/memory22/state contains the
+                string "online" the following command can be executed by
+                by root to offline that section.
+                # echo offline > /sys/devices/system/memory/memory22/state
 Users:          hotplug memory remove tools
                 https://w3.opensource.ibm.com/projects/powerpc-utils/
+
+What:           /sys/devices/system/node/nodeX/memoryY
+Date:           September 2008
+Contact:        Gary Hade <garyhade@us.ibm.com>
+Description:
+                When CONFIG_NUMA is enabled
+                /sys/devices/system/node/nodeX/memoryY is a symbolic link that
+                points to the corresponding /sys/devices/system/memory/memoryY
+                memory section directory.  For example, the following symbolic
+                link is created for memory section 9 on node0.
+                /sys/devices/system/node/node0/memory9 -> ../../memory/memory9
+