2 files changed, 151 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index e638e15a8895..97ad190e13af 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -41,6 +41,49 @@ Description:
                 for the device and attempt to bind to it.  For example:
                 # echo "8086 10f5" > /sys/bus/pci/drivers/foo/new_id
 
+What:           /sys/bus/pci/drivers/.../remove_id
+Date:           February 2009
+Contact:        Chris Wright <chrisw@sous-sol.org>
+Description:
+                Writing a device ID to this file will remove an ID
+                that was dynamically added via the new_id sysfs entry.
+                The format for the device ID is:
+                VVVV DDDD SVVV SDDD CCCC MMMM.  That is Vendor ID, Device
+                ID, Subsystem Vendor ID, Subsystem Device ID, Class,
+                and Class Mask.  The Vendor ID and Device ID fields are
+                required, the rest are optional.  After successfully
+                removing an ID, the driver will no longer support the
+                device.  This is useful to ensure auto probing won't
+                match the driver to the device.  For example:
+                # echo "8086 10f5" > /sys/bus/pci/drivers/foo/remove_id
+
+What:           /sys/bus/pci/rescan
+Date:           January 2009
+Contact:        Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+                Writing a non-zero value to this attribute will
+                force a rescan of all PCI buses in the system, and
+                re-discover previously removed devices.
+                Depends on CONFIG_HOTPLUG.
+
+What:           /sys/bus/pci/devices/.../remove
+Date:           January 2009
+Contact:        Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+                Writing a non-zero value to this attribute will
+                hot-remove the PCI device and any of its children.
+                Depends on CONFIG_HOTPLUG.
+
+What:           /sys/bus/pci/devices/.../rescan
+Date:           January 2009
+Contact:        Linux PCI developers <linux-pci@vger.kernel.org>
+Description:
+                Writing a non-zero value to this attribute will
+                force a rescan of the device's parent bus and all
+                child buses, and re-discover devices removed earlier
+                from this part of the device tree.
+                Depends on CONFIG_HOTPLUG.
+
 What:           /sys/bus/pci/devices/.../vpd
 Date:           February 2008
 Contact:        Ben Hutchings <bhutchings@solarflare.com>
@@ -52,3 +95,30 @@ Description:
                 that some devices may have malformatted data.  If the
                 underlying VPD has a writable section then the
                 corresponding section of this file will be writable.
+
+What:           /sys/bus/pci/devices/.../virtfnN
+Date:           March 2009
+Contact:        Yu Zhao <yu.zhao@intel.com>
+Description:
+                This symbolic link appears when hardware supports the SR-IOV
+                capability and the Physical Function driver has enabled it.
+                The symbolic link points to the PCI device sysfs entry of the
+                Virtual Function whose index is N (0...MaxVFs-1).
+
+What:           /sys/bus/pci/devices/.../dep_link
+Date:           March 2009
+Contact:        Yu Zhao <yu.zhao@intel.com>
+Description:
+                This symbolic link appears when hardware supports the SR-IOV
+                capability and the Physical Function driver has enabled it,
+                and this device has vendor specific dependencies with others.
+                The symbolic link points to the PCI device sysfs entry of
+                Physical Function this device depends on.
+
+What:           /sys/bus/pci/devices/.../physfn
+Date:           March 2009
+Contact:        Yu Zhao <yu.zhao@intel.com>
+Description:
+                This symbolic link appears when a device is a Virtual Function.
+                The symbolic link points to the PCI device sysfs entry of the
+                Physical Function this device associates with.
diff --git a/Documentation/ABI/testing/sysfs-fs-ext4 b/Documentation/ABI/testing/sysfs-fs-ext4
new file mode 100644
index 000000000000..4e79074de282
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-fs-ext4
@@ -0,0 +1,81 @@
+What:           /sys/fs/ext4/<disk>/mb_stats
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                 Controls whether the multiblock allocator should
+                 collect statistics, which are shown during the unmount.
+                 1 means to collect statistics, 0 means not to collect
+                 statistics
+
+What:           /sys/fs/ext4/<disk>/mb_group_prealloc
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                The multiblock allocator will round up allocation
+                requests to a multiple of this tuning parameter if the
+                stripe size is not set in the ext4 superblock
+
+What:           /sys/fs/ext4/<disk>/mb_max_to_scan
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                The maximum number of extents the multiblock allocator
+                will search to find the best extent
+
+What:           /sys/fs/ext4/<disk>/mb_min_to_scan
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                The minimum number of extents the multiblock allocator
+                will search to find the best extent
+
+What:           /sys/fs/ext4/<disk>/mb_order2_req
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                Tuning parameter which controls the minimum size for 
+                requests (as a power of 2) where the buddy cache is
+                used
+
+What:           /sys/fs/ext4/<disk>/mb_stream_req
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                Files which have fewer blocks than this tunable
+                parameter will have their blocks allocated out of a
+                block group specific preallocation pool, so that small
+                files are packed closely together.  Each large file
+                 will have its blocks allocated out of its own unique
+                 preallocation pool.
+
+What:           /sys/fs/ext4/<disk>/inode_readahead
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                Tuning parameter which controls the maximum number of
+                inode table blocks that ext4's inode table readahead
+                algorithm will pre-read into the buffer cache
+
+What:           /sys/fs/ext4/<disk>/delayed_allocation_blocks
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                This file is read-only and shows the number of blocks
+                that are dirty in the page cache, but which do not
+                have their location in the filesystem allocated yet.
+
+What:           /sys/fs/ext4/<disk>/lifetime_write_kbytes
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                This file is read-only and shows the number of kilobytes
+                of data that have been written to this filesystem since it was
+                created.
+
+What:           /sys/fs/ext4/<disk>/session_write_kbytes
+Date:           March 2008
+Contact:        "Theodore Ts'o" <tytso@mit.edu>
+Description:
+                This file is read-only and shows the number of
+                kilobytes of data that have been written to this
+                filesystem since it was mounted.