4 files changed, 65 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-dev b/Documentation/ABI/testing/sysfs-dev
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index 000000000000..a9f2b8b0530f
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+++ b/Documentation/ABI/testing/sysfs-dev
@@ -0,0 +1,20 @@
+What:           /sys/dev
+Date:           April 2008
+KernelVersion:  2.6.26
+Contact:        Dan Williams <dan.j.williams@intel.com>
+Description:    The /sys/dev tree provides a method to look up the sysfs
+                path for a device using the information returned from
+                stat(2).  There are two directories, 'block' and 'char',
+                beneath /sys/dev containing symbolic links with names of
+                the form "<major>:<minor>".  These links point to the
+                corresponding sysfs path for the given device.
+
+                Example:
+                $ readlink /sys/dev/block/8:32
+                ../../block/sdc
+
+                Entries in /sys/dev/char and /sys/dev/block will be
+                dynamically created and destroyed as devices enter and
+                leave the system.
+
+Users:          mdadm <linux-raid@vger.kernel.org>
diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
new file mode 100644
index 000000000000..7a16fe1e2270
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+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -0,0 +1,24 @@
+What:           /sys/devices/system/memory
+Date:           June 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The /sys/devices/system/memory contains a snapshot of the
+                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/
+
+What:           /sys/devices/system/memory/memoryX/removable
+Date:           June 2008
+Contact:        Badari Pulavarty <pbadari@us.ibm.com>
+Description:
+                The file /sys/devices/system/memory/memoryX/removable
+                indicates whether this memory block is removable or not.
+                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/
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm b/Documentation/ABI/testing/sysfs-kernel-mm
new file mode 100644
index 000000000000..190d523ac159
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-kernel-mm
@@ -0,0 +1,6 @@
+What:           /sys/kernel/mm
+Date:           July 2008
+Contact:        Nishanth Aravamudan <nacc@us.ibm.com>, VM maintainers
+Description:
+                /sys/kernel/mm/ should contain any and all VM
+                related information in /sys/kernel/.
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-hugepages b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages
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index 000000000000..e21c00571cf4
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+++ b/Documentation/ABI/testing/sysfs-kernel-mm-hugepages
@@ -0,0 +1,15 @@
+What:           /sys/kernel/mm/hugepages/
+Date:           June 2008
+Contact:        Nishanth Aravamudan <nacc@us.ibm.com>, hugetlb maintainers
+Description:
+                /sys/kernel/mm/hugepages/ contains a number of subdirectories
+                of the form hugepages-<size>kB, where <size> is the page size
+                of the hugepages supported by the kernel/CPU combination.
+
+                Under these directories are a number of files:
+                        nr_hugepages
+                        nr_overcommit_hugepages
+                        free_hugepages
+                        surplus_hugepages
+                        resv_hugepages
+                See Documentation/vm/hugetlbpage.txt for details.