36 files changed, 1520 insertions, 1121 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index 5aceb88b3f8b..05e2ae236865 100644
--- a/Documentation/DMA-API.txt
+++ b/Documentation/DMA-API.txt
@@ -4,20 +4,18 @@
        James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
 This document describes the DMA API.  For a more gentle introduction
-phrased in terms of the pci_ equivalents (and actual examples) see
+of the API (and actual examples) see
-Documentation/PCI/PCI-DMA-mapping.txt.
+Documentation/DMA-API-HOWTO.txt.
-This API is split into two pieces.  Part I describes the API and the
+This API is split into two pieces.  Part I describes the API.  Part II
-corresponding pci_ API.  Part II describes the extensions to the API
+describes the extensions to the API for supporting non-consistent
-for supporting non-consistent memory machines.  Unless you know that
+memory machines.  Unless you know that your driver absolutely has to
-your driver absolutely has to support non-consistent platforms (this
+support non-consistent platforms (this is usually only legacy
-is usually only legacy platforms) you should only use the API
+platforms) you should only use the API described in part I.
-described in part I.
-Part I - pci_ and dma_ Equivalent API 
+Part I - dma_ API
 -------------------------------------
-To get the pci_ API, you must #include <linux/pci.h>
 To get the dma_ API, you must #include <linux/dma-mapping.h>
@@ -27,9 +25,6 @@ Part Ia - Using large dma-coherent buffers
 void *
 dma_alloc_coherent(struct device *dev, size_t size,
                             dma_addr_t *dma_handle, gfp_t flag)
-void *
-pci_alloc_consistent(struct pci_dev *dev, size_t size,
-                             dma_addr_t *dma_handle)
 Consistent memory is memory for which a write by either the device or
 the processor can immediately be read by the processor or device
@@ -53,15 +48,11 @@ The simplest way to do that is to use the dma_pool calls (see below).
 The flag parameter (dma_alloc_coherent only) allows the caller to
 specify the GFP_ flags (see kmalloc) for the allocation (the
 implementation may choose to ignore flags that affect the location of
-the returned memory, like GFP_DMA).  For pci_alloc_consistent, you
+the returned memory, like GFP_DMA).
-must assume GFP_ATOMIC behaviour.
 void
 dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
                           dma_addr_t dma_handle)
-void
-pci_free_consistent(struct pci_dev *dev, size_t size, void *cpu_addr,
-                           dma_addr_t dma_handle)
 Free the region of consistent memory you previously allocated.  dev,
 size and dma_handle must all be the same as those passed into the
@@ -89,10 +80,6 @@ for alignment, like queue heads needing to be aligned on N-byte boundaries.
        dma_pool_create(const char *name, struct device *dev,
                        size_t size, size_t align, size_t alloc);
-        struct pci_pool *
-        pci_pool_create(const char *name, struct pci_device *dev,
-                        size_t size, size_t align, size_t alloc);
 The pool create() routines initialize a pool of dma-coherent buffers
 for use with a given device.  It must be called in a context which
 can sleep.
@@ -108,9 +95,6 @@ from this pool must not cross 4KByte boundaries.
        void *dma_pool_alloc(struct dma_pool *pool, gfp_t gfp_flags,
                        dma_addr_t *dma_handle);
-        void *pci_pool_alloc(struct pci_pool *pool, gfp_t gfp_flags,
-                        dma_addr_t *dma_handle);
 This allocates memory from the pool; the returned memory will meet the size
 and alignment requirements specified at creation time.  Pass GFP_ATOMIC to
 prevent blocking, or if it's permitted (not in_interrupt, not holding SMP locks),
@@ -122,9 +106,6 @@ pool's device.
        void dma_pool_free(struct dma_pool *pool, void *vaddr,
                        dma_addr_t addr);
-        void pci_pool_free(struct pci_pool *pool, void *vaddr,
-                        dma_addr_t addr);
 This puts memory back into the pool.  The pool is what was passed to
 the pool allocation routine; the cpu (vaddr) and dma addresses are what
 were returned when that routine allocated the memory being freed.
@@ -132,8 +113,6 @@ were returned when that routine allocated the memory being freed.
        void dma_pool_destroy(struct dma_pool *pool);
-        void pci_pool_destroy(struct pci_pool *pool);
 The pool destroy() routines free the resources of the pool.  They must be
 called in a context which can sleep.  Make sure you've freed all allocated
 memory back to the pool before you destroy it.
@@ -144,8 +123,6 @@ Part Ic - DMA addressing limitations
 int
 dma_supported(struct device *dev, u64 mask)
-int
-pci_dma_supported(struct pci_dev *hwdev, u64 mask)
 Checks to see if the device can support DMA to the memory described by
 mask.
@@ -159,8 +136,14 @@ driver writers.
 int
 dma_set_mask(struct device *dev, u64 mask)
+Checks to see if the mask is possible and updates the device
+parameters if it is.
+Returns: 0 if successful and a negative error if not.
 int
-pci_set_dma_mask(struct pci_device *dev, u64 mask)
+dma_set_coherent_mask(struct device *dev, u64 mask)
 Checks to see if the mask is possible and updates the device
 parameters if it is.
@@ -187,9 +170,6 @@ Part Id - Streaming DMA mappings
 dma_addr_t
 dma_map_single(struct device *dev, void *cpu_addr, size_t size,
                      enum dma_data_direction direction)
-dma_addr_t
-pci_map_single(struct pci_dev *hwdev, void *cpu_addr, size_t size,
-                      int direction)
 Maps a piece of processor virtual memory so it can be accessed by the
 device and returns the physical handle of the memory.
@@ -198,14 +178,10 @@ The direction for both api's may be converted freely by casting.
 However the dma_ API uses a strongly typed enumerator for its
 direction:
-DMA_NONE                = PCI_DMA_NONE          no direction (used for
+DMA_NONE                no direction (used for debugging)
-                                                debugging)
+DMA_TO_DEVICE           data is going from the memory to the device
-DMA_TO_DEVICE           = PCI_DMA_TODEVICE      data is going from the
+DMA_FROM_DEVICE         data is coming from the device to the memory
-                                                memory to the device
+DMA_BIDIRECTIONAL       direction isn't known
-DMA_FROM_DEVICE         = PCI_DMA_FROMDEVICE    data is coming from
-                                                the device to the
-                                                memory
-DMA_BIDIRECTIONAL       = PCI_DMA_BIDIRECTIONAL direction isn't known
 Notes:  Not all memory regions in a machine can be mapped by this
 API.  Further, regions that appear to be physically contiguous in
@@ -268,9 +244,6 @@ cache lines are updated with data that the device may have changed).
 void
 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
                 enum dma_data_direction direction)
-void
-pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
-                 size_t size, int direction)
 Unmaps the region previously mapped.  All the parameters passed in
 must be identical to those passed in (and returned) by the mapping
@@ -280,15 +253,9 @@ dma_addr_t
 dma_map_page(struct device *dev, struct page *page,
                    unsigned long offset, size_t size,
                    enum dma_data_direction direction)
-dma_addr_t
-pci_map_page(struct pci_dev *hwdev, struct page *page,
-                    unsigned long offset, size_t size, int direction)
 void
 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
               enum dma_data_direction direction)
-void
-pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
-               size_t size, int direction)
 API for mapping and unmapping for pages.  All the notes and warnings
 for the other mapping APIs apply here.  Also, although the <offset>
@@ -299,9 +266,6 @@ cache width is.
 int
 dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-int
-pci_dma_mapping_error(struct pci_dev *hwdev, dma_addr_t dma_addr)
 In some circumstances dma_map_single and dma_map_page will fail to create
 a mapping. A driver can check for these errors by testing the returned
 dma address with dma_mapping_error(). A non-zero return value means the mapping
@@ -311,9 +275,6 @@ reduce current DMA mapping usage or delay and try again later).
        int
        dma_map_sg(struct device *dev, struct scatterlist *sg,
                int nents, enum dma_data_direction direction)
-        int
-        pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
-                int nents, int direction)
 Returns: the number of physical segments mapped (this may be shorter
 than <nents> passed in if some elements of the scatter/gather list are
@@ -353,9 +314,6 @@ accessed sg->address and sg->length as shown above.
        void
        dma_unmap_sg(struct device *dev, struct scatterlist *sg,
                int nhwentries, enum dma_data_direction direction)
-        void
-        pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
-                int nents, int direction)
 Unmap the previously mapped scatter/gather list.  All the parameters
 must be the same as those and passed in to the scatter/gather mapping
@@ -365,21 +323,23 @@ Note: <nents> must be the number you passed in, *not* the number of
 physical entries returned.
 void
-dma_sync_single(struct device *dev, dma_addr_t dma_handle, size_t size,
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
-                enum dma_data_direction direction)
+                        enum dma_data_direction direction)
 void
-pci_dma_sync_single(struct pci_dev *hwdev, dma_addr_t dma_handle,
+dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
-                           size_t size, int direction)
+                           enum dma_data_direction direction)
 void
-dma_sync_sg(struct device *dev, struct scatterlist *sg, int nelems,
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-                          enum dma_data_direction direction)
+                    enum dma_data_direction direction)
 void
-pci_dma_sync_sg(struct pci_dev *hwdev, struct scatterlist *sg,
+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-                       int nelems, int direction)
+                       enum dma_data_direction direction)
-Synchronise a single contiguous or scatter/gather mapping.  All the
+Synchronise a single contiguous or scatter/gather mapping for the cpu
-parameters must be the same as those passed into the single mapping
+and device. With the sync_sg API, all the parameters must be the same
-API.
+as those passed into the single mapping API. With the sync_single API,
+you can use dma_handle and size parameters that aren't identical to
+those passed into the single mapping API to do a partial sync.
 Notes:  You must do this:
@@ -461,9 +421,9 @@ void whizco_dma_map_sg_attrs(struct device *dev, dma_addr_t dma_addr,
 Part II - Advanced dma_ usage
 -----------------------------
-Warning: These pieces of the DMA API have no PCI equivalent.  They
+Warning: These pieces of the DMA API should not be used in the
-should also not be used in the majority of cases, since they cater for
+majority of cases, since they cater for unlikely corner cases that
-unlikely corner cases that don't belong in usual drivers.
+don't belong in usual drivers.
 If you don't understand how cache line coherency works between a
 processor and an I/O device, you should not be using this part of the
@@ -514,16 +474,6 @@ into the width returned by this call.  It will also always be a power
 of two for easy alignment.
 void
-dma_sync_single_range(struct device *dev, dma_addr_t dma_handle,
-                      unsigned long offset, size_t size,
-                      enum dma_data_direction direction)
-Does a partial sync, starting at offset and continuing for size.  You
-must be careful to observe the cache alignment and width when doing
-anything like this.  You must also be extra careful about accessing
-memory you intend to sync partially.
-void
 dma_cache_sync(struct device *dev, void *vaddr, size_t size,
               enum dma_data_direction direction)
diff --git a/Documentation/HOWTO b/Documentation/HOWTO
index 8495fc970391..f5395af88a41 100644
--- a/Documentation/HOWTO
+++ b/Documentation/HOWTO
@@ -221,8 +221,8 @@ branches.  These different branches are:
  - main 2.6.x kernel tree
  - 2.6.x.y -stable kernel tree
  - 2.6.x -git kernel patches
-  - 2.6.x -mm kernel patches
  - subsystem specific kernel trees and patches
+  - the 2.6.x -next kernel tree for integration tests
 2.6.x kernel tree
 -----------------
@@ -232,7 +232,7 @@ process is as follows:
  - As soon as a new kernel is released a two weeks window is open,
    during this period of time maintainers can submit big diffs to
    Linus, usually the patches that have already been included in the
-    -mm kernel for a few weeks.  The preferred way to submit big changes
+    -next kernel for a few weeks.  The preferred way to submit big changes
    is using git (the kernel's source management tool, more information
    can be found at http://git.or.cz/) but plain patches are also just
    fine.
@@ -293,84 +293,43 @@ daily and represent the current state of Linus' tree.  They are more
 experimental than -rc kernels since they are generated automatically
 without even a cursory glance to see if they are sane.
-2.6.x -mm kernel patches
------------------------
-These are experimental kernel patches released by Andrew Morton.  Andrew
-takes all of the different subsystem kernel trees and patches and mushes
-them together, along with a lot of patches that have been plucked from
-the linux-kernel mailing list.  This tree serves as a proving ground for
-new features and patches.  Once a patch has proved its worth in -mm for
-a while Andrew or the subsystem maintainer pushes it on to Linus for
-inclusion in mainline.
-It is heavily encouraged that all new patches get tested in the -mm tree
-before they are sent to Linus for inclusion in the main kernel tree.  Code
-which does not make an appearance in -mm before the opening of the merge
-window will prove hard to merge into the mainline.
-These kernels are not appropriate for use on systems that are supposed
-to be stable and they are more risky to run than any of the other
-branches.
-If you wish to help out with the kernel development process, please test
-and use these kernel releases and provide feedback to the linux-kernel
-mailing list if you have any problems, and if everything works properly.
-In addition to all the other experimental patches, these kernels usually
-also contain any changes in the mainline -git kernels available at the
-time of release.
-The -mm kernels are not released on a fixed schedule, but usually a few
-mm kernels are released in between each -rc kernel (1 to 3 is common).
 Subsystem Specific kernel trees and patches
 -------------------------------------------
-A number of the different kernel subsystem developers expose their
+The maintainers of the various kernel subsystems --- and also many
-development trees so that others can see what is happening in the
+kernel subsystem developers --- expose their current state of
-different areas of the kernel.  These trees are pulled into the -mm
+development in source repositories.  That way, others can see what is
-kernel releases as described above.
+happening in the different areas of the kernel.  In areas where
+development is rapid, a developer may be asked to base his submissions
-Here is a list of some of the different kernel trees available:
+onto such a subsystem kernel tree so that conflicts between the
-  git trees:
+submission and other already ongoing work are avoided.
-    - Kbuild development tree, Sam Ravnborg <sam@ravnborg.org>
-        git.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild.git
+Most of these repositories are git trees, but there are also other SCMs
+in use, or patch queues being published as quilt series.  Addresses of
-    - ACPI development tree, Len Brown <len.brown@intel.com>
+these subsystem repositories are listed in the MAINTAINERS file.  Many
-        git.kernel.org:/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6.git
+of them can be browsed at http://git.kernel.org/.
-    - Block development tree, Jens Axboe <jens.axboe@oracle.com>
+Before a proposed patch is committed to such a subsystem tree, it is
-        git.kernel.org:/pub/scm/linux/kernel/git/axboe/linux-2.6-block.git
+subject to review which primarily happens on mailing lists (see the
+respective section below).  For several kernel subsystems, this review
-    - DRM development tree, Dave Airlie <airlied@linux.ie>
+process is tracked with the tool patchwork.  Patchwork offers a web
-        git.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6.git
+interface which shows patch postings, any comments on a patch or
+revisions to it, and maintainers can mark patches as under review,
-    - ia64 development tree, Tony Luck <tony.luck@intel.com>
+accepted, or rejected.  Most of these patchwork sites are listed at
-        git.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6.git
+http://patchwork.kernel.org/ or http://patchwork.ozlabs.org/.
-    - infiniband, Roland Dreier <rolandd@cisco.com>
+2.6.x -next kernel tree for integration tests
-        git.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git
+---------------------------------------------
+Before updates from subsystem trees are merged into the mainline 2.6.x
-    - libata, Jeff Garzik <jgarzik@pobox.com>
+tree, they need to be integration-tested.  For this purpose, a special
-        git.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git
+testing repository exists into which virtually all subsystem trees are
+pulled on an almost daily basis:
-    - network drivers, Jeff Garzik <jgarzik@pobox.com>
+        http://git.kernel.org/?p=linux/kernel/git/sfr/linux-next.git
-        git.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6.git
+        http://linux.f-seidel.de/linux-next/pmwiki/
-    - pcmcia, Dominik Brodowski <linux@dominikbrodowski.net>
+This way, the -next kernel gives a summary outlook onto what will be
-        git.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6.git
+expected to go into the mainline kernel at the next merge period.
+Adventurous testers are very welcome to runtime-test the -next kernel.
-    - SCSI, James Bottomley <James.Bottomley@hansenpartnership.com>
-        git.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6.git
-    - x86, Ingo Molnar <mingo@elte.hu>
-        git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git
-  quilt trees:
-    - USB, Driver Core, and I2C, Greg Kroah-Hartman <gregkh@suse.de>
-        kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/
-  Other kernel trees can be found listed at http://git.kernel.org/ and in
-  the MAINTAINERS file.
 Bug Reporting
 -------------
diff --git a/Documentation/IPMI.txt b/Documentation/IPMI.txt
index bc38283379f0..69dd29ed824e 100644
--- a/Documentation/IPMI.txt
+++ b/Documentation/IPMI.txt
@@ -365,6 +365,7 @@ You can change this at module load time (for a module) with:
       regshifts=<shift1>,<shift2>,...
       slave_addrs=<addr1>,<addr2>,...
       force_kipmid=<enable1>,<enable2>,...
+       kipmid_max_busy_us=<ustime1>,<ustime2>,...
       unload_when_empty=[0|1]
 Each of these except si_trydefaults is a list, the first item for the
@@ -433,6 +434,7 @@ kernel command line as:
       ipmi_si.regshifts=<shift1>,<shift2>,...
       ipmi_si.slave_addrs=<addr1>,<addr2>,...
       ipmi_si.force_kipmid=<enable1>,<enable2>,...
+       ipmi_si.kipmid_max_busy_us=<ustime1>,<ustime2>,...
 It works the same as the module parameters of the same names.
@@ -450,6 +452,16 @@ force this thread on or off.  If you force it off and don't have
 interrupts, the driver will run VERY slowly.  Don't blame me,
 these interfaces suck.
+Unfortunately, this thread can use a lot of CPU depending on the
+interface's performance.  This can waste a lot of CPU and cause
+various issues with detecting idle CPU and using extra power.  To
+avoid this, the kipmid_max_busy_us sets the maximum amount of time, in
+microseconds, that kipmid will spin before sleeping for a tick.  This
+value sets a balance between performance and CPU waste and needs to be
+tuned to your needs.  Maybe, someday, auto-tuning will be added, but
+that's not a simple thing and even the auto-tuning would need to be
+tuned to the user's desired performance.
 The driver supports a hot add and remove of interfaces.  This way,
 interfaces can be added or removed after the kernel is up and running.
 This is done using /sys/modules/ipmi_si/parameters/hotmod, which is a
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 94b945733534..6fc7ea1d1f9d 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,3 @@
 obj-m := DocBook/ accounting/ auxdisplay/ connector/ \
-        filesystems/configfs/ ia64/ networking/ \
+        filesystems/ filesystems/configfs/ ia64/ laptops/ networking/ \
-        pcmcia/ spi/ video4linux/ vm/ watchdog/src/
+        pcmcia/ spi/ timers/ video4linux/ vm/ watchdog/src/
diff --git a/Documentation/PCI/PCI-DMA-mapping.txt b/Documentation/PCI/PCI-DMA-mapping.txt
index ecad88d9fe59..52618ab069ad 100644
--- a/Documentation/PCI/PCI-DMA-mapping.txt
+++ b/Documentation/PCI/PCI-DMA-mapping.txt
@@ -1,12 +1,12 @@
-                        Dynamic DMA mapping
+                     Dynamic DMA mapping Guide
-                        ===================
+                     =========================
                 David S. Miller <davem@redhat.com>
                 Richard Henderson <rth@cygnus.com>
                  Jakub Jelinek <jakub@redhat.com>
-This document describes the DMA mapping system in terms of the pci_
+This is a guide to device driver writers on how to use the DMA API
-API.  For a similar API that works for generic devices, see
+with example pseudo-code.  For a concise description of the API, see
 DMA-API.txt.
 Most of the 64bit platforms have special hardware that translates bus
@@ -26,12 +26,15 @@ mapped only for the time they are actually used and unmapped after the DMA
 transfer.
 The following API will work of course even on platforms where no such
-hardware exists, see e.g. arch/x86/include/asm/pci.h for how it is implemented on
+hardware exists.
-top of the virt_to_bus interface.
+Note that the DMA API works with any bus independent of the underlying
+microprocessor architecture. You should use the DMA API rather than
+the bus specific DMA API (e.g. pci_dma_*).
 First of all, you should make sure
-#include <linux/pci.h>
+#include <linux/dma-mapping.h>
 is in your driver. This file will obtain for you the definition of the
 dma_addr_t (which can hold any valid DMA address for the platform)
@@ -78,44 +81,43 @@ for you to DMA from/to.
                        DMA addressing limitations
 Does your device have any DMA addressing limitations?  For example, is
-your device only capable of driving the low order 24-bits of address
+your device only capable of driving the low order 24-bits of address?
-on the PCI bus for SAC DMA transfers?  If so, you need to inform the
+If so, you need to inform the kernel of this fact.
-PCI layer of this fact.
 By default, the kernel assumes that your device can address the full
-32-bits in a SAC cycle.  For a 64-bit DAC capable device, this needs
+32-bits.  For a 64-bit capable device, this needs to be increased.
-to be increased.  And for a device with limitations, as discussed in
+And for a device with limitations, as discussed in the previous
-the previous paragraph, it needs to be decreased.
+paragraph, it needs to be decreased.
-pci_alloc_consistent() by default will return 32-bit DMA addresses.
+Special note about PCI: PCI-X specification requires PCI-X devices to
-PCI-X specification requires PCI-X devices to support 64-bit
+support 64-bit addressing (DAC) for all transactions.  And at least
-addressing (DAC) for all transactions. And at least one platform (SGI
+one platform (SGI SN2) requires 64-bit consistent allocations to
-SN2) requires 64-bit consistent allocations to operate correctly when
+operate correctly when the IO bus is in PCI-X mode.
-the IO bus is in PCI-X mode. Therefore, like with pci_set_dma_mask(),
-it's good practice to call pci_set_consistent_dma_mask() to set the
+For correct operation, you must interrogate the kernel in your device
-appropriate mask even if your device only supports 32-bit DMA
+probe routine to see if the DMA controller on the machine can properly
-(default) and especially if it's a PCI-X device.
+support the DMA addressing limitation your device has.  It is good
+style to do this even if your device holds the default setting,
-For correct operation, you must interrogate the PCI layer in your
-device probe routine to see if the PCI controller on the machine can
-properly support the DMA addressing limitation your device has.  It is
-good style to do this even if your device holds the default setting,
 because this shows that you did think about these issues wrt. your
 device.
-The query is performed via a call to pci_set_dma_mask():
+The query is performed via a call to dma_set_mask():
-        int pci_set_dma_mask(struct pci_dev *pdev, u64 device_mask);
+        int dma_set_mask(struct device *dev, u64 mask);
 The query for consistent allocations is performed via a call to
-pci_set_consistent_dma_mask():
+dma_set_coherent_mask():
-        int pci_set_consistent_dma_mask(struct pci_dev *pdev, u64 device_mask);
+        int dma_set_coherent_mask(struct device *dev, u64 mask);
-Here, pdev is a pointer to the PCI device struct of your device, and
+Here, dev is a pointer to the device struct of your device, and mask
-device_mask is a bit mask describing which bits of a PCI address your
+is a bit mask describing which bits of an address your device
-device supports.  It returns zero if your card can perform DMA
+supports.  It returns zero if your card can perform DMA properly on
-properly on the machine given the address mask you provided.
+the machine given the address mask you provided.  In general, the
+device struct of your device is embedded in the bus specific device
+struct of your device.  For example, a pointer to the device struct of
+your PCI device is pdev->dev (pdev is a pointer to the PCI device
+struct of your device).
 If it returns non-zero, your device cannot perform DMA properly on
 this platform, and attempting to do so will result in undefined
@@ -133,31 +135,30 @@ of your driver reports that performance is bad or that the device is not
 even detected, you can ask them for the kernel messages to find out
 exactly why.
-The standard 32-bit addressing PCI device would do something like
+The standard 32-bit addressing device would do something like this:
-this:
-        if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
+        if (dma_set_mask(dev, DMA_BIT_MASK(32))) {
                printk(KERN_WARNING
                       "mydev: No suitable DMA available.\n");
                goto ignore_this_device;
        }
-Another common scenario is a 64-bit capable device.  The approach
+Another common scenario is a 64-bit capable device.  The approach here
-here is to try for 64-bit DAC addressing, but back down to a
+is to try for 64-bit addressing, but back down to a 32-bit mask that
-32-bit mask should that fail.  The PCI platform code may fail the
+should not fail.  The kernel may fail the 64-bit mask not because the
-64-bit mask not because the platform is not capable of 64-bit
+platform is not capable of 64-bit addressing.  Rather, it may fail in
-addressing.  Rather, it may fail in this case simply because
+this case simply because 32-bit addressing is done more efficiently
-32-bit SAC addressing is done more efficiently than DAC addressing.
+than 64-bit addressing.  For example, Sparc64 PCI SAC addressing is
-Sparc64 is one platform which behaves in this way.
+more efficient than DAC addressing.
 Here is how you would handle a 64-bit capable device which can drive
 all 64-bits when accessing streaming DMA:
        int using_dac;
-        if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+        if (!dma_set_mask(dev, DMA_BIT_MASK(64))) {
                using_dac = 1;
-        } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
+        } else if (!dma_set_mask(dev, DMA_BIT_MASK(32))) {
                using_dac = 0;
        } else {
                printk(KERN_WARNING
@@ -170,36 +171,36 @@ the case would look like this:
        int using_dac, consistent_using_dac;
-        if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+        if (!dma_set_mask(dev, DMA_BIT_MASK(64))) {
                using_dac = 1;
                consistent_using_dac = 1;
-                pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+                dma_set_coherent_mask(dev, DMA_BIT_MASK(64));
-        } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
+        } else if (!dma_set_mask(dev, DMA_BIT_MASK(32))) {
                using_dac = 0;
                consistent_using_dac = 0;
-                pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+                dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
        } else {
                printk(KERN_WARNING
                       "mydev: No suitable DMA available.\n");
                goto ignore_this_device;
        }
-pci_set_consistent_dma_mask() will always be able to set the same or a
+dma_set_coherent_mask() will always be able to set the same or a
-smaller mask as pci_set_dma_mask(). However for the rare case that a
+smaller mask as dma_set_mask(). However for the rare case that a
 device driver only uses consistent allocations, one would have to
-check the return value from pci_set_consistent_dma_mask().
+check the return value from dma_set_coherent_mask().
 Finally, if your device can only drive the low 24-bits of
-address during PCI bus mastering you might do something like:
+address you might do something like:
-        if (pci_set_dma_mask(pdev, DMA_BIT_MASK(24))) {
+        if (dma_set_mask(dev, DMA_BIT_MASK(24))) {
                printk(KERN_WARNING
                       "mydev: 24-bit DMA addressing not available.\n");
                goto ignore_this_device;
        }
-When pci_set_dma_mask() is successful, and returns zero, the PCI layer
+When dma_set_mask() is successful, and returns zero, the kernel saves
-saves away this mask you have provided.  The PCI layer will use this
+away this mask you have provided.  The kernel will use this
 information later when you make DMA mappings.
 There is a case which we are aware of at this time, which is worth
@@ -208,7 +209,7 @@ functions (for example a sound card provides playback and record
 functions) and the various different functions have _different_
 DMA addressing limitations, you may wish to probe each mask and
 only provide the functionality which the machine can handle.  It
-is important that the last call to pci_set_dma_mask() be for the
+is important that the last call to dma_set_mask() be for the
 most specific mask.
 Here is pseudo-code showing how this might be done:
@@ -217,17 +218,17 @@ Here is pseudo-code showing how this might be done:
        #define RECORD_ADDRESS_BITS     DMA_BIT_MASK(24)
        struct my_sound_card *card;
-        struct pci_dev *pdev;
+        struct device *dev;
        ...
-        if (!pci_set_dma_mask(pdev, PLAYBACK_ADDRESS_BITS)) {
+        if (!dma_set_mask(dev, PLAYBACK_ADDRESS_BITS)) {
                card->playback_enabled = 1;
        } else {
                card->playback_enabled = 0;
                printk(KERN_WARNING "%s: Playback disabled due to DMA limitations.\n",
                       card->name);
        }
-        if (!pci_set_dma_mask(pdev, RECORD_ADDRESS_BITS)) {
+        if (!dma_set_mask(dev, RECORD_ADDRESS_BITS)) {
                card->record_enabled = 1;
        } else {
                card->record_enabled = 0;
@@ -252,8 +253,8 @@ There are two types of DMA mappings:
  Think of "consistent" as "synchronous" or "coherent".
  The current default is to return consistent memory in the low 32
-  bits of the PCI bus space.  However, for future compatibility you
+  bits of the bus space.  However, for future compatibility you should
-  should set the consistent mask even if this default is fine for your
+  set the consistent mask even if this default is fine for your
  driver.
  Good examples of what to use consistent mappings for are:
@@ -285,9 +286,9 @@ There are two types of DMA mappings:
             found in PCI bridges (such as by reading a register's value
             after writing it).
- Streaming DMA mappings which are usually mapped for one DMA transfer,
+- Streaming DMA mappings which are usually mapped for one DMA
-  unmapped right after it (unless you use pci_dma_sync_* below) and for which
+  transfer, unmapped right after it (unless you use dma_sync_* below)
-  hardware can optimize for sequential accesses.
+  and for which hardware can optimize for sequential accesses.
  This of "streaming" as "asynchronous" or "outside the coherency
  domain".
@@ -302,8 +303,8 @@ There are two types of DMA mappings:
  optimizations the hardware allows.  To this end, when using
  such mappings you must be explicit about what you want to happen.
-Neither type of DMA mapping has alignment restrictions that come
+Neither type of DMA mapping has alignment restrictions that come from
-from PCI, although some devices may have such restrictions.
+the underlying bus, although some devices may have such restrictions.
 Also, systems with caches that aren't DMA-coherent will work better
 when the underlying buffers don't share cache lines with other data.
@@ -315,33 +316,27 @@ you should do:
        dma_addr_t dma_handle;
-        cpu_addr = pci_alloc_consistent(pdev, size, &dma_handle);
+        cpu_addr = dma_alloc_coherent(dev, size, &dma_handle, gfp);
-where pdev is a struct pci_dev *. This may be called in interrupt context.
-You should use dma_alloc_coherent (see DMA-API.txt) for buses
-where devices don't have struct pci_dev (like ISA, EISA).
-This argument is needed because the DMA translations may be bus
+where device is a struct device *. This may be called in interrupt
-specific (and often is private to the bus which the device is attached
+context with the GFP_ATOMIC flag.
-to).
 Size is the length of the region you want to allocate, in bytes.
 This routine will allocate RAM for that region, so it acts similarly to
 __get_free_pages (but takes size instead of a page order).  If your
 driver needs regions sized smaller than a page, you may prefer using
-the pci_pool interface, described below.
+the dma_pool interface, described below.
-The consistent DMA mapping interfaces, for non-NULL pdev, will by
+The consistent DMA mapping interfaces, for non-NULL dev, will by
-default return a DMA address which is SAC (Single Address Cycle)
+default return a DMA address which is 32-bit addressable.  Even if the
-addressable.  Even if the device indicates (via PCI dma mask) that it
+device indicates (via DMA mask) that it may address the upper 32-bits,
-may address the upper 32-bits and thus perform DAC cycles, consistent
+consistent allocation will only return > 32-bit addresses for DMA if
-allocation will only return > 32-bit PCI addresses for DMA if the
+the consistent DMA mask has been explicitly changed via
-consistent dma mask has been explicitly changed via
+dma_set_coherent_mask().  This is true of the dma_pool interface as
-pci_set_consistent_dma_mask().  This is true of the pci_pool interface
+well.
-as well.
+dma_alloc_coherent returns two values: the virtual address which you
-pci_alloc_consistent returns two values: the virtual address which you
 can use to access it from the CPU and dma_handle which you pass to the
 card.
@@ -354,54 +349,54 @@ buffer you receive will not cross a 64K boundary.
 To unmap and free such a DMA region, you call:
-        pci_free_consistent(pdev, size, cpu_addr, dma_handle);
+        dma_free_coherent(dev, size, cpu_addr, dma_handle);
-where pdev, size are the same as in the above call and cpu_addr and
+where dev, size are the same as in the above call and cpu_addr and
-dma_handle are the values pci_alloc_consistent returned to you.
+dma_handle are the values dma_alloc_coherent returned to you.
 This function may not be called in interrupt context.
 If your driver needs lots of smaller memory regions, you can write
-custom code to subdivide pages returned by pci_alloc_consistent,
+custom code to subdivide pages returned by dma_alloc_coherent,
-or you can use the pci_pool API to do that.  A pci_pool is like
+or you can use the dma_pool API to do that.  A dma_pool is like
-a kmem_cache, but it uses pci_alloc_consistent not __get_free_pages.
+a kmem_cache, but it uses dma_alloc_coherent not __get_free_pages.
 Also, it understands common hardware constraints for alignment,
 like queue heads needing to be aligned on N byte boundaries.
-Create a pci_pool like this:
+Create a dma_pool like this:
-        struct pci_pool *pool;
+        struct dma_pool *pool;
-        pool = pci_pool_create(name, pdev, size, align, alloc);
+        pool = dma_pool_create(name, dev, size, align, alloc);
-The "name" is for diagnostics (like a kmem_cache name); pdev and size
+The "name" is for diagnostics (like a kmem_cache name); dev and size
 are as above.  The device's hardware alignment requirement for this
 type of data is "align" (which is expressed in bytes, and must be a
 power of two).  If your device has no boundary crossing restrictions,
 pass 0 for alloc; passing 4096 says memory allocated from this pool
 must not cross 4KByte boundaries (but at that time it may be better to
-go for pci_alloc_consistent directly instead).
+go for dma_alloc_coherent directly instead).
-Allocate memory from a pci pool like this:
+Allocate memory from a dma pool like this:
-        cpu_addr = pci_pool_alloc(pool, flags, &dma_handle);
+        cpu_addr = dma_pool_alloc(pool, flags, &dma_handle);
 flags are SLAB_KERNEL if blocking is permitted (not in_interrupt nor
-holding SMP locks), SLAB_ATOMIC otherwise.  Like pci_alloc_consistent,
+holding SMP locks), SLAB_ATOMIC otherwise.  Like dma_alloc_coherent,
 this returns two values, cpu_addr and dma_handle.
-Free memory that was allocated from a pci_pool like this:
+Free memory that was allocated from a dma_pool like this:
-        pci_pool_free(pool, cpu_addr, dma_handle);
+        dma_pool_free(pool, cpu_addr, dma_handle);
-where pool is what you passed to pci_pool_alloc, and cpu_addr and
+where pool is what you passed to dma_pool_alloc, and cpu_addr and
-dma_handle are the values pci_pool_alloc returned. This function
+dma_handle are the values dma_pool_alloc returned. This function
 may be called in interrupt context.
-Destroy a pci_pool by calling:
+Destroy a dma_pool by calling:
-        pci_pool_destroy(pool);
+        dma_pool_destroy(pool);
-Make sure you've called pci_pool_free for all memory allocated
+Make sure you've called dma_pool_free for all memory allocated
 from a pool before you destroy the pool. This function may not
 be called in interrupt context.
@@ -411,15 +406,15 @@ The interfaces described in subsequent portions of this document
 take a DMA direction argument, which is an integer and takes on
 one of the following values:
- PCI_DMA_BIDIRECTIONAL
+ DMA_BIDIRECTIONAL
- PCI_DMA_TODEVICE
+ DMA_TO_DEVICE
- PCI_DMA_FROMDEVICE
+ DMA_FROM_DEVICE
- PCI_DMA_NONE
+ DMA_NONE
 One should provide the exact DMA direction if you know it.
-PCI_DMA_TODEVICE means "from main memory to the PCI device"
+DMA_TO_DEVICE means "from main memory to the device"
-PCI_DMA_FROMDEVICE means "from the PCI device to main memory"
+DMA_FROM_DEVICE means "from the device to main memory"
 It is the direction in which the data moves during the DMA
 transfer.
@@ -427,12 +422,12 @@ You are _strongly_ encouraged to specify this as precisely
 as you possibly can.
 If you absolutely cannot know the direction of the DMA transfer,
-specify PCI_DMA_BIDIRECTIONAL.  It means that the DMA can go in
+specify DMA_BIDIRECTIONAL.  It means that the DMA can go in
 either direction.  The platform guarantees that you may legally
 specify this, and that it will work, but this may be at the
 cost of performance for example.
-The value PCI_DMA_NONE is to be used for debugging.  One can
+The value DMA_NONE is to be used for debugging.  One can
 hold this in a data structure before you come to know the
 precise direction, and this will help catch cases where your
 direction tracking logic has failed to set things up properly.
@@ -442,21 +437,21 @@ potential platform-specific optimizations of such) is for debugging.
 Some platforms actually have a write permission boolean which DMA
 mappings can be marked with, much like page protections in the user
 program address space.  Such platforms can and do report errors in the
-kernel logs when the PCI controller hardware detects violation of the
+kernel logs when the DMA controller hardware detects violation of the
 permission setting.
 Only streaming mappings specify a direction, consistent mappings
 implicitly have a direction attribute setting of
-PCI_DMA_BIDIRECTIONAL.
+DMA_BIDIRECTIONAL.
 The SCSI subsystem tells you the direction to use in the
 'sc_data_direction' member of the SCSI command your driver is
 working on.
 For Networking drivers, it's a rather simple affair.  For transmit
-packets, map/unmap them with the PCI_DMA_TODEVICE direction
+packets, map/unmap them with the DMA_TO_DEVICE direction
 specifier.  For receive packets, just the opposite, map/unmap them
-with the PCI_DMA_FROMDEVICE direction specifier.
+with the DMA_FROM_DEVICE direction specifier.
                  Using Streaming DMA mappings
@@ -467,43 +462,43 @@ scatterlist.
 To map a single region, you do:
-        struct pci_dev *pdev = mydev->pdev;
+        struct device *dev = &my_dev->dev;
        dma_addr_t dma_handle;
        void *addr = buffer->ptr;
        size_t size = buffer->len;
-        dma_handle = pci_map_single(pdev, addr, size, direction);
+        dma_handle = dma_map_single(dev, addr, size, direction);
 and to unmap it:
-        pci_unmap_single(pdev, dma_handle, size, direction);
+        dma_unmap_single(dev, dma_handle, size, direction);
-You should call pci_unmap_single when the DMA activity is finished, e.g.
+You should call dma_unmap_single when the DMA activity is finished, e.g.
 from the interrupt which told you that the DMA transfer is done.
 Using cpu pointers like this for single mappings has a disadvantage,
 you cannot reference HIGHMEM memory in this way.  Thus, there is a
-map/unmap interface pair akin to pci_{map,unmap}_single.  These
+map/unmap interface pair akin to dma_{map,unmap}_single.  These
 interfaces deal with page/offset pairs instead of cpu pointers.
 Specifically:
-        struct pci_dev *pdev = mydev->pdev;
+        struct device *dev = &my_dev->dev;
        dma_addr_t dma_handle;
        struct page *page = buffer->page;
        unsigned long offset = buffer->offset;
        size_t size = buffer->len;
-        dma_handle = pci_map_page(pdev, page, offset, size, direction);
+        dma_handle = dma_map_page(dev, page, offset, size, direction);
        ...
-        pci_unmap_page(pdev, dma_handle, size, direction);
+        dma_unmap_page(dev, dma_handle, size, direction);
 Here, "offset" means byte offset within the given page.
 With scatterlists, you map a region gathered from several regions by:
-        int i, count = pci_map_sg(pdev, sglist, nents, direction);
+        int i, count = dma_map_sg(dev, sglist, nents, direction);
        struct scatterlist *sg;
        for_each_sg(sglist, sg, count, i) {
@@ -527,16 +522,16 @@ accessed sg->address and sg->length as shown above.
 To unmap a scatterlist, just call:
-        pci_unmap_sg(pdev, sglist, nents, direction);
+        dma_unmap_sg(dev, sglist, nents, direction);
 Again, make sure DMA activity has already finished.
-PLEASE NOTE:  The 'nents' argument to the pci_unmap_sg call must be
+PLEASE NOTE:  The 'nents' argument to the dma_unmap_sg call must be
-              the _same_ one you passed into the pci_map_sg call,
+              the _same_ one you passed into the dma_map_sg call,
              it should _NOT_ be the 'count' value _returned_ from the
-              pci_map_sg call.
+              dma_map_sg call.
-Every pci_map_{single,sg} call should have its pci_unmap_{single,sg}
+Every dma_map_{single,sg} call should have its dma_unmap_{single,sg}
 counterpart, because the bus address space is a shared resource (although
 in some ports the mapping is per each BUS so less devices contend for the
 same bus address space) and you could render the machine unusable by eating
@@ -547,14 +542,14 @@ the data in between the DMA transfers, the buffer needs to be synced
 properly in order for the cpu and device to see the most uptodate and
 correct copy of the DMA buffer.
-So, firstly, just map it with pci_map_{single,sg}, and after each DMA
+So, firstly, just map it with dma_map_{single,sg}, and after each DMA
 transfer call either:
-        pci_dma_sync_single_for_cpu(pdev, dma_handle, size, direction);
+        dma_sync_single_for_cpu(dev, dma_handle, size, direction);
 or:
-        pci_dma_sync_sg_for_cpu(pdev, sglist, nents, direction);
+        dma_sync_sg_for_cpu(dev, sglist, nents, direction);
 as appropriate.
@@ -562,27 +557,27 @@ Then, if you wish to let the device get at the DMA area again,
 finish accessing the data with the cpu, and then before actually
 giving the buffer to the hardware call either:
-        pci_dma_sync_single_for_device(pdev, dma_handle, size, direction);
+        dma_sync_single_for_device(dev, dma_handle, size, direction);
 or:
-        pci_dma_sync_sg_for_device(dev, sglist, nents, direction);
+        dma_sync_sg_for_device(dev, sglist, nents, direction);
 as appropriate.
 After the last DMA transfer call one of the DMA unmap routines
-pci_unmap_{single,sg}. If you don't touch the data from the first pci_map_*
+dma_unmap_{single,sg}. If you don't touch the data from the first dma_map_*
-call till pci_unmap_*, then you don't have to call the pci_dma_sync_*
+call till dma_unmap_*, then you don't have to call the dma_sync_*
 routines at all.
 Here is pseudo code which shows a situation in which you would need
-to use the pci_dma_sync_*() interfaces.
+to use the dma_sync_*() interfaces.
        my_card_setup_receive_buffer(struct my_card *cp, char *buffer, int len)
        {
                dma_addr_t mapping;
-                mapping = pci_map_single(cp->pdev, buffer, len, PCI_DMA_FROMDEVICE);
+                mapping = dma_map_single(cp->dev, buffer, len, DMA_FROM_DEVICE);
                cp->rx_buf = buffer;
                cp->rx_len = len;
@@ -606,25 +601,25 @@ to use the pci_dma_sync_*() interfaces.
                         * the DMA transfer with the CPU first
                         * so that we see updated contents.
                         */
-                        pci_dma_sync_single_for_cpu(cp->pdev, cp->rx_dma,
+                        dma_sync_single_for_cpu(&cp->dev, cp->rx_dma,
-                                                    cp->rx_len,
+                                                cp->rx_len,
-                                                    PCI_DMA_FROMDEVICE);
+                                                DMA_FROM_DEVICE);
                        /* Now it is safe to examine the buffer. */
                        hp = (struct my_card_header *) cp->rx_buf;
                        if (header_is_ok(hp)) {
-                                pci_unmap_single(cp->pdev, cp->rx_dma, cp->rx_len,
+                                dma_unmap_single(&cp->dev, cp->rx_dma, cp->rx_len,
-                                                 PCI_DMA_FROMDEVICE);
+                                                 DMA_FROM_DEVICE);
                                pass_to_upper_layers(cp->rx_buf);
                                make_and_setup_new_rx_buf(cp);
                        } else {
                                /* Just sync the buffer and give it back
                                 * to the card.
                                 */
-                                pci_dma_sync_single_for_device(cp->pdev,
+                                dma_sync_single_for_device(&cp->dev,
-                                                               cp->rx_dma,
+                                                           cp->rx_dma,
-                                                               cp->rx_len,
+                                                           cp->rx_len,
-                                                               PCI_DMA_FROMDEVICE);
+                                                           DMA_FROM_DEVICE);
                                give_rx_buf_to_card(cp);
                        }
                }
@@ -634,19 +629,19 @@ Drivers converted fully to this interface should not use virt_to_bus any
 longer, nor should they use bus_to_virt. Some drivers have to be changed a
 little bit, because there is no longer an equivalent to bus_to_virt in the
 dynamic DMA mapping scheme - you have to always store the DMA addresses
-returned by the pci_alloc_consistent, pci_pool_alloc, and pci_map_single
+returned by the dma_alloc_coherent, dma_pool_alloc, and dma_map_single
-calls (pci_map_sg stores them in the scatterlist itself if the platform
+calls (dma_map_sg stores them in the scatterlist itself if the platform
 supports dynamic DMA mapping in hardware) in your driver structures and/or
 in the card registers.
-All PCI drivers should be using these interfaces with no exceptions.
+All drivers should be using these interfaces with no exceptions.  It
-It is planned to completely remove virt_to_bus() and bus_to_virt() as
+is planned to completely remove virt_to_bus() and bus_to_virt() as
 they are entirely deprecated.  Some ports already do not provide these
 as it is impossible to correctly support them.
                Optimizing Unmap State Space Consumption
-On many platforms, pci_unmap_{single,page}() is simply a nop.
+On many platforms, dma_unmap_{single,page}() is simply a nop.
 Therefore, keeping track of the mapping address and length is a waste
 of space.  Instead of filling your drivers up with ifdefs and the like
 to "work around" this (which would defeat the whole purpose of a
@@ -655,7 +650,7 @@ portable API) the following facilities are provided.
 Actually, instead of describing the macros one by one, we'll
 transform some example code.
-1) Use DECLARE_PCI_UNMAP_{ADDR,LEN} in state saving structures.
+1) Use DEFINE_DMA_UNMAP_{ADDR,LEN} in state saving structures.
   Example, before:
        struct ring_state {
@@ -668,14 +663,11 @@ transform some example code.
        struct ring_state {
                struct sk_buff *skb;
-                DECLARE_PCI_UNMAP_ADDR(mapping)
+                DEFINE_DMA_UNMAP_ADDR(mapping);
-                DECLARE_PCI_UNMAP_LEN(len)
+                DEFINE_DMA_UNMAP_LEN(len);
        };
-   NOTE: DO NOT put a semicolon at the end of the DECLARE_*()
+2) Use dma_unmap_{addr,len}_set to set these values.
-         macro.
-2) Use pci_unmap_{addr,len}_set to set these values.
   Example, before:
        ringp->mapping = FOO;
@@ -683,21 +675,21 @@ transform some example code.
   after:
-        pci_unmap_addr_set(ringp, mapping, FOO);
+        dma_unmap_addr_set(ringp, mapping, FOO);
-        pci_unmap_len_set(ringp, len, BAR);
+        dma_unmap_len_set(ringp, len, BAR);
-3) Use pci_unmap_{addr,len} to access these values.
+3) Use dma_unmap_{addr,len} to access these values.
   Example, before:
-        pci_unmap_single(pdev, ringp->mapping, ringp->len,
+        dma_unmap_single(dev, ringp->mapping, ringp->len,
-                         PCI_DMA_FROMDEVICE);
+                         DMA_FROM_DEVICE);
   after:
-        pci_unmap_single(pdev,
+        dma_unmap_single(dev,
-                         pci_unmap_addr(ringp, mapping),
+                         dma_unmap_addr(ringp, mapping),
-                         pci_unmap_len(ringp, len),
+                         dma_unmap_len(ringp, len),
-                         PCI_DMA_FROMDEVICE);
+                         DMA_FROM_DEVICE);
 It really should be self-explanatory.  We treat the ADDR and LEN
 separately, because it is possible for an implementation to only
@@ -732,15 +724,15 @@ to "Closing".
 DMA address space is limited on some architectures and an allocation
 failure can be determined by:
- checking if pci_alloc_consistent returns NULL or pci_map_sg returns 0
+- checking if dma_alloc_coherent returns NULL or dma_map_sg returns 0
- checking the returned dma_addr_t of pci_map_single and pci_map_page
+- checking the returned dma_addr_t of dma_map_single and dma_map_page
-  by using pci_dma_mapping_error():
+  by using dma_mapping_error():
        dma_addr_t dma_handle;
-        dma_handle = pci_map_single(pdev, addr, size, direction);
+        dma_handle = dma_map_single(dev, addr, size, direction);
-        if (pci_dma_mapping_error(pdev, dma_handle)) {
+        if (dma_mapping_error(dev, dma_handle)) {
                /*
                 * reduce current DMA mapping usage,
                 * delay and try again later or
diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist
index 1053a56be3b1..8916ca48bc95 100644
--- a/Documentation/SubmitChecklist
+++ b/Documentation/SubmitChecklist
@@ -9,10 +9,14 @@ Documentation/SubmittingPatches and elsewhere regarding submitting Linux
 kernel patches.
-1: Builds cleanly with applicable or modified CONFIG options =y, =m, and
+1: If you use a facility then #include the file that defines/declares
+   that facility.  Don't depend on other header files pulling in ones
+   that you use.
+2: Builds cleanly with applicable or modified CONFIG options =y, =m, and
   =n.  No gcc warnings/errors, no linker warnings/errors.
-2: Passes allnoconfig, allmodconfig
+2b: Passes allnoconfig, allmodconfig
 3: Builds on multiple CPU architectures by using local cross-compile tools
   or some other build farm.
diff --git a/Documentation/arm/Samsung/Overview.txt b/Documentation/arm/Samsung/Overview.txt
new file mode 100644
index 000000000000..7cced1fea9c3
--- /dev/null
+++ b/Documentation/arm/Samsung/Overview.txt
@@ -0,0 +1,86 @@
+                Samsung ARM Linux Overview
+                ==========================
+Introduction
+------------
+  The Samsung range of ARM SoCs spans many similar devices, from the initial
+  ARM9 through to the newest ARM cores. This document shows an overview of
+  the current kernel support, how to use it and where to find the code
+  that supports this.
+  The currently supported SoCs are:
+  - S3C24XX: See Documentation/arm/Samsung-S3C24XX/Overview.txt for full list
+  - S3C64XX: S3C6400 and S3C6410
+  - S5PC6440
+  S5PC100 and S5PC110 support is currently being merged
+S3C24XX Systems
+---------------
+  There is still documentation in Documnetation/arm/Samsung-S3C24XX/ which
+  deals with the architecture and drivers specific to these devices.
+  See Documentation/arm/Samsung-S3C24XX/Overview.txt for more information
+  on the implementation details and specific support.
+Configuration
+-------------
+  A number of configurations are supplied, as there is no current way of
+  unifying all the SoCs into one kernel.
+  s5p6440_defconfig - S5P6440 specific default configuration
+  s5pc100_defconfig - S5PC100 specific default configuration
+Layout
+------
+  The directory layout is currently being restructured, and consists of
+  several platform directories and then the machine specific directories
+  of the CPUs being built for.
+  plat-samsung provides the base for all the implementations, and is the
+  last in the line of include directories that are processed for the build
+  specific information. It contains the base clock, GPIO and device definitions
+  to get the system running.
+  plat-s3c is the s3c24xx/s3c64xx platform directory, although it is currently
+  involved in other builds this will be phased out once the relevant code is
+  moved elsewhere.
+  plat-s3c24xx is for s3c24xx specific builds, see the S3C24XX docs.
+  plat-s3c64xx is for the s3c64xx specific bits, see the S3C24XX docs.
+  plat-s5p is for s5p specific builds, more to be added.
+  [ to finish ]
+Port Contributors
+-----------------
+  Ben Dooks (BJD)
+  Vincent Sanders
+  Herbert Potzl
+  Arnaud Patard (RTP)
+  Roc Wu
+  Klaus Fetscher
+  Dimitry Andric
+  Shannon Holland
+  Guillaume Gourat (NexVision)
+  Christer Weinigel (wingel) (Acer N30)
+  Lucas Correia Villa Real (S3C2400 port)
+Document Author
+---------------
+Copyright 2009-2010 Ben Dooks <ben-linux@fluff.org>
diff --git a/Documentation/arm/Samsung/clksrc-change-registers.awk b/Documentation/arm/Samsung/clksrc-change-registers.awk
new file mode 100755
index 000000000000..0c50220851fb
--- /dev/null
+++ b/Documentation/arm/Samsung/clksrc-change-registers.awk
@@ -0,0 +1,167 @@
+#!/usr/bin/awk -f
+#
+# Copyright 2010 Ben Dooks <ben-linux@fluff.org>
+#
+# Released under GPLv2
+# example usage
+# ./clksrc-change-registers.awk arch/arm/plat-s5pc1xx/include/plat/regs-clock.h < src > dst
+function extract_value(s)
+{
+    eqat = index(s, "=")
+    comat = index(s, ",")
+    return substr(s, eqat+2, (comat-eqat)-2)
+}
+function remove_brackets(b)
+{
+    return substr(b, 2, length(b)-2)
+}
+function splitdefine(l, p)
+{
+    r = split(l, tp)
+    p[0] = tp[2]
+    p[1] = remove_brackets(tp[3])
+}
+function find_length(f)
+{
+    if (0)
+        printf "find_length " f "\n" > "/dev/stderr"
+    if (f ~ /0x1/)
+        return 1
+    else if (f ~ /0x3/)
+        return 2
+    else if (f ~ /0x7/)
+        return 3
+    else if (f ~ /0xf/)
+        return 4
+    printf "unknown legnth " f "\n" > "/dev/stderr"
+    exit
+}
+function find_shift(s)
+{
+    id = index(s, "<")
+    if (id <= 0) {
+        printf "cannot find shift " s "\n" > "/dev/stderr"
+        exit
+    }
+    return substr(s, id+2)
+}
+BEGIN {
+    if (ARGC < 2) {
+        print "too few arguments" > "/dev/stderr"
+        exit
+    }
+# read the header file and find the mask values that we will need
+# to replace and create an associative array of values
+    while (getline line < ARGV[1] > 0) {
+        if (line ~ /\#define.*_MASK/ &&
+            !(line ~ /S5PC100_EPLL_MASK/) &&
+            !(line ~ /USB_SIG_MASK/)) {
+            splitdefine(line, fields)
+            name = fields[0]
+            if (0)
+                printf "MASK " line "\n" > "/dev/stderr"
+            dmask[name,0] = find_length(fields[1])
+            dmask[name,1] = find_shift(fields[1])
+            if (0)
+                printf "=> '" name "' LENGTH=" dmask[name,0] " SHIFT=" dmask[name,1] "\n" > "/dev/stderr"
+        } else {
+        }
+    }
+    delete ARGV[1]
+}
+/clksrc_clk.*=.*{/ {
+    shift=""
+    mask=""
+    divshift=""
+    reg_div=""
+    reg_src=""
+    indent=1
+    print $0
+    for(; indent >= 1;) {
+        if ((getline line) <= 0) {
+            printf "unexpected end of file" > "/dev/stderr"
+            exit 1;
+        }
+        if (line ~ /\.shift/) {
+            shift = extract_value(line)
+        } else if (line ~ /\.mask/) {
+            mask = extract_value(line)
+        } else if (line ~ /\.reg_divider/) {
+            reg_div = extract_value(line)
+        } else if (line ~ /\.reg_source/) {
+            reg_src = extract_value(line)
+        } else if (line ~ /\.divider_shift/) {
+            divshift = extract_value(line)
+        } else if (line ~ /{/) {
+                indent++
+                print line
+            } else if (line ~ /}/) {
+            indent--
+            if (indent == 0) {
+                if (0) {
+                    printf "shift '" shift   "' ='" dmask[shift,0] "'\n" > "/dev/stderr"
+                    printf "mask  '" mask    "'\n" > "/dev/stderr"
+                    printf "dshft '" divshift "'\n" > "/dev/stderr"
+                    printf "rdiv  '" reg_div "'\n" > "/dev/stderr"
+                    printf "rsrc  '" reg_src "'\n" > "/dev/stderr"
+                }
+                generated = mask
+                sub(reg_src, reg_div, generated)
+                if (0) {
+                    printf "/* rsrc " reg_src " */\n"
+                    printf "/* rdiv " reg_div " */\n"
+                    printf "/* shift " shift " */\n"
+                    printf "/* mask " mask " */\n"
+                    printf "/* generated " generated " */\n"
+                }
+                if (reg_div != "") {
+                    printf "\t.reg_div = { "
+                    printf ".reg = " reg_div ", "
+                    printf ".shift = " dmask[generated,1] ", "
+                    printf ".size = " dmask[generated,0] ", "
+                    printf "},\n"
+                }
+                printf "\t.reg_src = { "
+                printf ".reg = " reg_src ", "
+                printf ".shift = " dmask[mask,1] ", "
+                printf ".size = " dmask[mask,0] ", "
+                printf "},\n"
+            }
+            print line
+        } else {
+            print line
+        }
+        if (0)
+            printf indent ":" line "\n" > "/dev/stderr"
+    }
+}
+// && ! /clksrc_clk.*=.*{/ { print $0 }
diff --git a/Documentation/cgroups/cgroup_event_listener.c b/Documentation/cgroups/cgroup_event_listener.c
new file mode 100644
index 000000000000..8c2bfc4a6358
--- /dev/null
+++ b/Documentation/cgroups/cgroup_event_listener.c
@@ -0,0 +1,110 @@
+/*
+ * cgroup_event_listener.c - Simple listener of cgroup events
+ *
+ * Copyright (C) Kirill A. Shutemov <kirill@shutemov.name>
+ */
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/eventfd.h>
+#define USAGE_STR "Usage: cgroup_event_listener <path-to-control-file> <args>\n"
+int main(int argc, char **argv)
+{
+        int efd = -1;
+        int cfd = -1;
+        int event_control = -1;
+        char event_control_path[PATH_MAX];
+        char line[LINE_MAX];
+        int ret;
+        if (argc != 3) {
+                fputs(USAGE_STR, stderr);
+                return 1;
+        }
+        cfd = open(argv[1], O_RDONLY);
+        if (cfd == -1) {
+                fprintf(stderr, "Cannot open %s: %s\n", argv[1],
+                                strerror(errno));
+                goto out;
+        }
+        ret = snprintf(event_control_path, PATH_MAX, "%s/cgroup.event_control",
+                        dirname(argv[1]));
+        if (ret >= PATH_MAX) {
+                fputs("Path to cgroup.event_control is too long\n", stderr);
+                goto out;
+        }
+        event_control = open(event_control_path, O_WRONLY);
+        if (event_control == -1) {
+                fprintf(stderr, "Cannot open %s: %s\n", event_control_path,
+                                strerror(errno));
+                goto out;
+        }
+        efd = eventfd(0, 0);
+        if (efd == -1) {
+                perror("eventfd() failed");
+                goto out;
+        }
+        ret = snprintf(line, LINE_MAX, "%d %d %s", efd, cfd, argv[2]);
+        if (ret >= LINE_MAX) {
+                fputs("Arguments string is too long\n", stderr);
+                goto out;
+        }
+        ret = write(event_control, line, strlen(line) + 1);
+        if (ret == -1) {
+                perror("Cannot write to cgroup.event_control");
+                goto out;
+        }
+        while (1) {
+                uint64_t result;
+                ret = read(efd, &result, sizeof(result));
+                if (ret == -1) {
+                        if (errno == EINTR)
+                                continue;
+                        perror("Cannot read from eventfd");
+                        break;
+                }
+                assert(ret == sizeof(result));
+                ret = access(event_control_path, W_OK);
+                if ((ret == -1) && (errno == ENOENT)) {
+                                puts("The cgroup seems to have removed.");
+                                ret = 0;
+                                break;
+                }
+                if (ret == -1) {
+                        perror("cgroup.event_control "
+                                        "is not accessable any more");
+                        break;
+                }
+                printf("%s %s: crossed\n", argv[1], argv[2]);
+        }
+out:
+        if (efd >= 0)
+                close(efd);
+        if (event_control >= 0)
+                close(event_control);
+        if (cfd >= 0)
+                close(cfd);
+        return (ret != 0);
+}
diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt
index 0b33bfe7dde9..fd588ff0e296 100644
--- a/Documentation/cgroups/cgroups.txt
+++ b/Documentation/cgroups/cgroups.txt
@@ -22,6 +22,8 @@ CONTENTS:
 2. Usage Examples and Syntax
  2.1 Basic Usage
  2.2 Attaching processes
+  2.3 Mounting hierarchies by name
+  2.4 Notification API
 3. Kernel API
  3.1 Overview
  3.2 Synchronization
@@ -434,6 +436,25 @@ you give a subsystem a name.
 The name of the subsystem appears as part of the hierarchy description
 in /proc/mounts and /proc/<pid>/cgroups.
+2.4 Notification API
+--------------------
+There is mechanism which allows to get notifications about changing
+status of a cgroup.
+To register new notification handler you need:
+ - create a file descriptor for event notification using eventfd(2);
+ - open a control file to be monitored (e.g. memory.usage_in_bytes);
+ - write "<event_fd> <control_fd> <args>" to cgroup.event_control.
+   Interpretation of args is defined by control file implementation;
+eventfd will be woken up by control file implementation or when the
+cgroup is removed.
+To unregister notification handler just close eventfd.
+NOTE: Support of notifications should be implemented for the control
+file. See documentation for the subsystem.
 3. Kernel API
 =============
@@ -488,6 +509,11 @@ Each subsystem should:
 - add an entry in linux/cgroup_subsys.h
 - define a cgroup_subsys object called <name>_subsys
+If a subsystem can be compiled as a module, it should also have in its
+module initcall a call to cgroup_load_subsys(), and in its exitcall a
+call to cgroup_unload_subsys(). It should also set its_subsys.module =
+THIS_MODULE in its .c file.
 Each subsystem may export the following methods. The only mandatory
 methods are create/destroy. Any others that are null are presumed to
 be successful no-ops.
@@ -536,10 +562,21 @@ returns an error, this will abort the attach operation.  If a NULL
 task is passed, then a successful result indicates that *any*
 unspecified task can be moved into the cgroup. Note that this isn't
 called on a fork. If this method returns 0 (success) then this should
-remain valid while the caller holds cgroup_mutex. If threadgroup is
+remain valid while the caller holds cgroup_mutex and it is ensured that either
+attach() or cancel_attach() will be called in future. If threadgroup is
 true, then a successful result indicates that all threads in the given
 thread's threadgroup can be moved together.
+void cancel_attach(struct cgroup_subsys *ss, struct cgroup *cgrp,
+               struct task_struct *task, bool threadgroup)
+(cgroup_mutex held by caller)
+Called when a task attach operation has failed after can_attach() has succeeded.
+A subsystem whose can_attach() has some side-effects should provide this
+function, so that the subsytem can implement a rollback. If not, not necessary.
+This will be called only about subsystems whose can_attach() operation have
+succeeded.
 void attach(struct cgroup_subsys *ss, struct cgroup *cgrp,
            struct cgroup *old_cgrp, struct task_struct *task,
            bool threadgroup)
diff --git a/Documentation/cgroups/memcg_test.txt b/Documentation/cgroups/memcg_test.txt
index 72db89ed0609..f7f68b2ac199 100644
--- a/Documentation/cgroups/memcg_test.txt
+++ b/Documentation/cgroups/memcg_test.txt
@@ -1,6 +1,6 @@
 Memory Resource Controller(Memcg)  Implementation Memo.
-Last Updated: 2009/1/20
+Last Updated: 2010/2
-Base Kernel Version: based on 2.6.29-rc2.
+Base Kernel Version: based on 2.6.33-rc7-mm(candidate for 34).
 Because VM is getting complex (one of reasons is memcg...), memcg's behavior
 is complex. This is a document for memcg's internal behavior.
@@ -337,7 +337,7 @@ Under below explanation, we assume CONFIG_MEM_RES_CTRL_SWAP=y.
        race and lock dependency with other cgroup subsystems.
        example)
-        # mount -t cgroup none /cgroup -t cpuset,memory,cpu,devices
+        # mount -t cgroup none /cgroup -o cpuset,memory,cpu,devices
        and do task move, mkdir, rmdir etc...under this.
@@ -348,7 +348,7 @@ Under below explanation, we assume CONFIG_MEM_RES_CTRL_SWAP=y.
        For example, test like following is good.
        (Shell-A)
-        # mount -t cgroup none /cgroup -t memory
+        # mount -t cgroup none /cgroup -o memory
        # mkdir /cgroup/test
        # echo 40M > /cgroup/test/memory.limit_in_bytes
        # echo 0 > /cgroup/test/tasks
@@ -378,3 +378,42 @@ Under below explanation, we assume CONFIG_MEM_RES_CTRL_SWAP=y.
        #echo 50M > memory.limit_in_bytes
        #echo 50M > memory.memsw.limit_in_bytes
        run 51M of malloc
+ 9.9 Move charges at task migration
+        Charges associated with a task can be moved along with task migration.
+        (Shell-A)
+        #mkdir /cgroup/A
+        #echo $$ >/cgroup/A/tasks
+        run some programs which uses some amount of memory in /cgroup/A.
+        (Shell-B)
+        #mkdir /cgroup/B
+        #echo 1 >/cgroup/B/memory.move_charge_at_immigrate
+        #echo "pid of the program running in group A" >/cgroup/B/tasks
+        You can see charges have been moved by reading *.usage_in_bytes or
+        memory.stat of both A and B.
+        See 8.2 of Documentation/cgroups/memory.txt to see what value should be
+        written to move_charge_at_immigrate.
+ 9.10 Memory thresholds
+        Memory controler implements memory thresholds using cgroups notification
+        API. You can use Documentation/cgroups/cgroup_event_listener.c to test
+        it.
+        (Shell-A) Create cgroup and run event listener
+        # mkdir /cgroup/A
+        # ./cgroup_event_listener /cgroup/A/memory.usage_in_bytes 5M
+        (Shell-B) Add task to cgroup and try to allocate and free memory
+        # echo $$ >/cgroup/A/tasks
+        # a="$(dd if=/dev/zero bs=1M count=10)"
+        # a=
+        You will see message from cgroup_event_listener every time you cross
+        the thresholds.
+        Use /cgroup/A/memory.memsw.usage_in_bytes to test memsw thresholds.
+        It's good idea to test root cgroup as well.
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index b871f2552b45..f8bc802d70b9 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -182,6 +182,8 @@ list.
 NOTE: Reclaim does not work for the root cgroup, since we cannot set any
 limits on the root cgroup.
+Note2: When panic_on_oom is set to "2", the whole system will panic.
 2. Locking
 The memory controller uses the following hierarchy
@@ -262,10 +264,12 @@ some of the pages cached in the cgroup (page cache pages).
 4.2 Task migration
 When a task migrates from one cgroup to another, it's charge is not
-carried forward. The pages allocated from the original cgroup still
+carried forward by default. The pages allocated from the original cgroup still
 remain charged to it, the charge is dropped when the page is freed or
 reclaimed.
+Note: You can move charges of a task along with task migration. See 8.
 4.3 Removing a cgroup
 A cgroup can be removed by rmdir, but as discussed in sections 4.1 and 4.2, a
@@ -377,7 +381,8 @@ The feature can be disabled by
 NOTE1: Enabling/disabling will fail if the cgroup already has other
 cgroups created below it.
-NOTE2: This feature can be enabled/disabled per subtree.
+NOTE2: When panic_on_oom is set to "2", the whole system will panic in
+case of an oom event in any cgroup.
 7. Soft limits
@@ -414,7 +419,76 @@ NOTE1: Soft limits take effect over a long period of time, since they involve
 NOTE2: It is recommended to set the soft limit always below the hard limit,
       otherwise the hard limit will take precedence.
-8. TODO
+8. Move charges at task migration
+Users can move charges associated with a task along with task migration, that
+is, uncharge task's pages from the old cgroup and charge them to the new cgroup.
+This feature is not supported in !CONFIG_MMU environments because of lack of
+page tables.
+8.1 Interface
+This feature is disabled by default. It can be enabled(and disabled again) by
+writing to memory.move_charge_at_immigrate of the destination cgroup.
+If you want to enable it:
+# echo (some positive value) > memory.move_charge_at_immigrate
+Note: Each bits of move_charge_at_immigrate has its own meaning about what type
+      of charges should be moved. See 8.2 for details.
+Note: Charges are moved only when you move mm->owner, IOW, a leader of a thread
+      group.
+Note: If we cannot find enough space for the task in the destination cgroup, we
+      try to make space by reclaiming memory. Task migration may fail if we
+      cannot make enough space.
+Note: It can take several seconds if you move charges in giga bytes order.
+And if you want disable it again:
+# echo 0 > memory.move_charge_at_immigrate
+8.2 Type of charges which can be move
+Each bits of move_charge_at_immigrate has its own meaning about what type of
+charges should be moved.
+  bit | what type of charges would be moved ?
+ -----+------------------------------------------------------------------------
+   0  | A charge of an anonymous page(or swap of it) used by the target task.
+      | Those pages and swaps must be used only by the target task. You must
+      | enable Swap Extension(see 2.4) to enable move of swap charges.
+Note: Those pages and swaps must be charged to the old cgroup.
+Note: More type of pages(e.g. file cache, shmem,) will be supported by other
+      bits in future.
+8.3 TODO
+- Add support for other types of pages(e.g. file cache, shmem, etc.).
+- Implement madvise(2) to let users decide the vma to be moved or not to be
+  moved.
+- All of moving charge operations are done under cgroup_mutex. It's not good
+  behavior to hold the mutex too long, so we may need some trick.
+9. Memory thresholds
+Memory controler implements memory thresholds using cgroups notification
+API (see cgroups.txt). It allows to register multiple memory and memsw
+thresholds and gets notifications when it crosses.
+To register a threshold application need:
+ - create an eventfd using eventfd(2);
+ - open memory.usage_in_bytes or memory.memsw.usage_in_bytes;
+ - write string like "<event_fd> <memory.usage_in_bytes> <threshold>" to
+   cgroup.event_control.
+Application will be notified through eventfd when memory usage crosses
+threshold in any direction.
+It's applicable for root and non-root cgroup.
+10. TODO
 1. Add support for accounting huge pages (as a separate controller)
 2. Make per-cgroup scanner reclaim not-shared pages first
diff --git a/Documentation/email-clients.txt b/Documentation/email-clients.txt
index a618efab7b15..945ff3fda433 100644
--- a/Documentation/email-clients.txt
+++ b/Documentation/email-clients.txt
@@ -216,26 +216,14 @@ Works.  Use "Insert file..." or external editor.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Gmail (Web GUI)
-If you just have to use Gmail to send patches, it CAN be made to work.  It
+Does not work for sending patches.
-requires a bit of external help, though.
+Gmail web client converts tabs to spaces automatically.
-The first problem is that Gmail converts tabs to spaces.  This will
-totally break your patches.  To prevent this, you have to use a different
+At the same time it wraps lines every 78 chars with CRLF style line breaks
-editor.  There is a firefox extension called "ViewSourceWith"
+although tab2space problem can be solved with external editor.
-(https://addons.mozilla.org/en-US/firefox/addon/394) which allows you to
-edit any text box in the editor of your choice.  Configure it to launch
+Another problem is that Gmail will base64-encode any message that has a
-your favorite editor.  When you want to send a patch, use this technique.
+non-ASCII character. That includes things like European names.
-Once you have crafted your messsage + patch, save and exit the editor,
-which should reload the Gmail edit box.  GMAIL WILL PRESERVE THE TABS.
-Hoorah.  Apparently you can cut-n-paste literal tabs, but Gmail will
-convert those to spaces upon sending!
-The second problem is that Gmail converts tabs to spaces on replies.  If
-you reply to a patch, don't expect to be able to apply it as a patch.
-The last problem is that Gmail will base64-encode any message that has a
-non-ASCII character.  That includes things like European names.  Be aware.
-Gmail is not convenient for lkml patches, but CAN be made to work.
                                ###
diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
index 5139b8c9d5af..3bae418c6ad3 100644
--- a/Documentation/filesystems/00-INDEX
+++ b/Documentation/filesystems/00-INDEX
@@ -32,6 +32,8 @@ dlmfs.txt
        - info on the userspace interface to the OCFS2 DLM.
 dnotify.txt
        - info about directory notification in Linux.
+dnotify_test.c
+        - example program for dnotify
 ecryptfs.txt
        - docs on eCryptfs: stacked cryptographic filesystem for Linux.
 exofs.txt
diff --git a/Documentation/filesystems/Makefile b/Documentation/filesystems/Makefile
new file mode 100644
index 000000000000..a5dd114da14f
--- /dev/null
+++ b/Documentation/filesystems/Makefile
@@ -0,0 +1,8 @@
+# kbuild trick to avoid linker error. Can be omitted if a module is built.
+obj- := dummy.o
+# List of programs to build
+hostprogs-y := dnotify_test
+# Tell kbuild to always build the programs
+always := $(hostprogs-y)
diff --git a/Documentation/filesystems/dnotify.txt b/Documentation/filesystems/dnotify.txt
index 9f5d338ddbb8..6baf88f46859 100644
--- a/Documentation/filesystems/dnotify.txt
+++ b/Documentation/filesystems/dnotify.txt
@@ -62,38 +62,9 @@ disabled, fcntl(fd, F_NOTIFY, ...) will return -EINVAL.
 Example
 -------
+See Documentation/filesystems/dnotify_test.c for an example.
-        #define _GNU_SOURCE     /* needed to get the defines */
+NOTE
-        #include <fcntl.h>      /* in glibc 2.2 this has the needed
+----
-                                           values defined */
+Beginning with Linux 2.6.13, dnotify has been replaced by inotify.
-        #include <signal.h>
+See Documentation/filesystems/inotify.txt for more information on it.
-        #include <stdio.h>
-        #include <unistd.h>
-        static volatile int event_fd;
-        static void handler(int sig, siginfo_t *si, void *data)
-        {
-                event_fd = si->si_fd;
-        }
-        int main(void)
-        {
-                struct sigaction act;
-                int fd;
-                act.sa_sigaction = handler;
-                sigemptyset(&act.sa_mask);
-                act.sa_flags = SA_SIGINFO;
-                sigaction(SIGRTMIN + 1, &act, NULL);
-                fd = open(".", O_RDONLY);
-                fcntl(fd, F_SETSIG, SIGRTMIN + 1);
-                fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
-                /* we will now be notified if any of the files
-                   in "." is modified or new files are created */
-                while (1) {
-                        pause();
-                        printf("Got event on fd=%d\n", event_fd);
-                }
-        }
diff --git a/Documentation/filesystems/dnotify_test.c b/Documentation/filesystems/dnotify_test.c
new file mode 100644
index 000000000000..8b37b4a1e18d
--- /dev/null
+++ b/Documentation/filesystems/dnotify_test.c
@@ -0,0 +1,34 @@
+#define _GNU_SOURCE     /* needed to get the defines */
+#include <fcntl.h>      /* in glibc 2.2 this has the needed
+                                   values defined */
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+static volatile int event_fd;
+static void handler(int sig, siginfo_t *si, void *data)
+{
+        event_fd = si->si_fd;
+}
+int main(void)
+{
+        struct sigaction act;
+        int fd;
+        act.sa_sigaction = handler;
+        sigemptyset(&act.sa_mask);
+        act.sa_flags = SA_SIGINFO;
+        sigaction(SIGRTMIN + 1, &act, NULL);
+        fd = open(".", O_RDONLY);
+        fcntl(fd, F_SETSIG, SIGRTMIN + 1);
+        fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT);
+        /* we will now be notified if any of the files
+           in "." is modified or new files are created */
+        while (1) {
+                pause();
+                printf("Got event on fd=%d\n", event_fd);
+        }
+}
diff --git a/Documentation/kobject.txt b/Documentation/kobject.txt
index c79ab996dada..bdb13817e1e9 100644
--- a/Documentation/kobject.txt
+++ b/Documentation/kobject.txt
@@ -266,7 +266,7 @@ kobj_type:
    struct kobj_type {
            void (*release)(struct kobject *);
-            struct sysfs_ops    *sysfs_ops;
+            const struct sysfs_ops *sysfs_ops;
            struct attribute    **default_attrs;
    };
diff --git a/Documentation/laptops/00-INDEX b/Documentation/laptops/00-INDEX
index df4fb52d4594..fa688538e757 100644
--- a/Documentation/laptops/00-INDEX
+++ b/Documentation/laptops/00-INDEX
@@ -6,6 +6,8 @@ asus-laptop.txt
        - information on the Asus Laptop Extras driver.
 disk-shock-protection.txt
        - information on hard disk shock protection.
+dslm.c
+        - Simple Disk Sleep Monitor program
 laptop-mode.txt
        - how to conserve battery power using laptop-mode.
 sony-laptop.txt
diff --git a/Documentation/laptops/Makefile b/Documentation/laptops/Makefile
new file mode 100644
index 000000000000..5cb144af3c09
--- /dev/null
+++ b/Documentation/laptops/Makefile
@@ -0,0 +1,8 @@
+# kbuild trick to avoid linker error. Can be omitted if a module is built.
+obj- := dummy.o
+# List of programs to build
+hostprogs-y := dslm
+# Tell kbuild to always build the programs
+always := $(hostprogs-y)
diff --git a/Documentation/laptops/dslm.c b/Documentation/laptops/dslm.c
new file mode 100644
index 000000000000..72ff290c5fc6
--- /dev/null
+++ b/Documentation/laptops/dslm.c
@@ -0,0 +1,166 @@
+/*
+ * dslm.c
+ * Simple Disk Sleep Monitor
+ *  by Bartek Kania
+ * Licenced under the GPL
+ */
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <time.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <linux/hdreg.h>
+#ifdef DEBUG
+#define D(x) x
+#else
+#define D(x)
+#endif
+int endit = 0;
+/* Check if the disk is in powersave-mode
+ * Most of the code is stolen from hdparm.
+ * 1 = active, 0 = standby/sleep, -1 = unknown */
+static int check_powermode(int fd)
+{
+    unsigned char args[4] = {WIN_CHECKPOWERMODE1,0,0,0};
+    int state;
+    if (ioctl(fd, HDIO_DRIVE_CMD, &args)
+        && (args[0] = WIN_CHECKPOWERMODE2) /* try again with 0x98 */
+        && ioctl(fd, HDIO_DRIVE_CMD, &args)) {
+        if (errno != EIO || args[0] != 0 || args[1] != 0) {
+            state = -1; /* "unknown"; */
+        } else
+            state = 0; /* "sleeping"; */
+    } else {
+        state = (args[2] == 255) ? 1 : 0;
+    }
+    D(printf(" drive state is:  %d\n", state));
+    return state;
+}
+static char *state_name(int i)
+{
+    if (i == -1) return "unknown";
+    if (i == 0) return "sleeping";
+    if (i == 1) return "active";
+    return "internal error";
+}
+static char *myctime(time_t time)
+{
+    char *ts = ctime(&time);
+    ts[strlen(ts) - 1] = 0;
+    return ts;
+}
+static void measure(int fd)
+{
+    time_t start_time;
+    int last_state;
+    time_t last_time;
+    int curr_state;
+    time_t curr_time = 0;
+    time_t time_diff;
+    time_t active_time = 0;
+    time_t sleep_time = 0;
+    time_t unknown_time = 0;
+    time_t total_time = 0;
+    int changes = 0;
+    float tmp;
+    printf("Starting measurements\n");
+    last_state = check_powermode(fd);
+    start_time = last_time = time(0);
+    printf("  System is in state %s\n\n", state_name(last_state));
+    while(!endit) {
+        sleep(1);
+        curr_state = check_powermode(fd);
+        if (curr_state != last_state || endit) {
+            changes++;
+            curr_time = time(0);
+            time_diff = curr_time - last_time;
+            if (last_state == 1) active_time += time_diff;
+            else if (last_state == 0) sleep_time += time_diff;
+            else unknown_time += time_diff;
+            last_state = curr_state;
+            last_time = curr_time;
+            printf("%s: State-change to %s\n", myctime(curr_time),
+                   state_name(curr_state));
+        }
+    }
+    changes--; /* Compensate for SIGINT */
+    total_time = time(0) - start_time;
+    printf("\nTotal running time:  %lus\n", curr_time - start_time);
+    printf(" State changed %d times\n", changes);
+    tmp = (float)sleep_time / (float)total_time * 100;
+    printf(" Time in sleep state:   %lus (%.2f%%)\n", sleep_time, tmp);
+    tmp = (float)active_time / (float)total_time * 100;
+    printf(" Time in active state:  %lus (%.2f%%)\n", active_time, tmp);
+    tmp = (float)unknown_time / (float)total_time * 100;
+    printf(" Time in unknown state: %lus (%.2f%%)\n", unknown_time, tmp);
+}
+static void ender(int s)
+{
+    endit = 1;
+}
+static void usage(void)
+{
+    puts("usage: dslm [-w <time>] <disk>");
+    exit(0);
+}
+int main(int argc, char **argv)
+{
+    int fd;
+    char *disk = 0;
+    int settle_time = 60;
+    /* Parse the simple command-line */
+    if (argc == 2)
+        disk = argv[1];
+    else if (argc == 4) {
+        settle_time = atoi(argv[2]);
+        disk = argv[3];
+    } else
+        usage();
+    if (!(fd = open(disk, O_RDONLY|O_NONBLOCK))) {
+        printf("Can't open %s, because: %s\n", disk, strerror(errno));
+        exit(-1);
+    }
+    if (settle_time) {
+        printf("Waiting %d seconds for the system to settle down to "
+               "'normal'\n", settle_time);
+        sleep(settle_time);
+    } else
+        puts("Not waiting for system to settle down");
+    signal(SIGINT, ender);
+    measure(fd);
+    close(fd);
+    return 0;
+}
diff --git a/Documentation/laptops/laptop-mode.txt b/Documentation/laptops/laptop-mode.txt
index eeedee11c8c2..2c3c35093023 100644
--- a/Documentation/laptops/laptop-mode.txt
+++ b/Documentation/laptops/laptop-mode.txt
@@ -779,172 +779,4 @@ Monitoring tool
 ---------------
 Bartek Kania submitted this, it can be used to measure how much time your disk
-spends spun up/down.
+spends spun up/down.  See Documentation/laptops/dslm.c
---------------------------dslm.c BEGIN-----------------------------------------
-/*
- * Simple Disk Sleep Monitor
- *  by Bartek Kania
- * Licenced under the GPL
- */
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <time.h>
-#include <string.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <linux/hdreg.h>
-#ifdef DEBUG
-#define D(x) x
-#else
-#define D(x)
-#endif
-int endit = 0;
-/* Check if the disk is in powersave-mode
- * Most of the code is stolen from hdparm.
- * 1 = active, 0 = standby/sleep, -1 = unknown */
-int check_powermode(int fd)
-{
-    unsigned char args[4] = {WIN_CHECKPOWERMODE1,0,0,0};
-    int state;
-    if (ioctl(fd, HDIO_DRIVE_CMD, &args)
-        && (args[0] = WIN_CHECKPOWERMODE2) /* try again with 0x98 */
-        && ioctl(fd, HDIO_DRIVE_CMD, &args)) {
-        if (errno != EIO || args[0] != 0 || args[1] != 0) {
-            state = -1; /* "unknown"; */
-        } else
-            state = 0; /* "sleeping"; */
-    } else {
-        state = (args[2] == 255) ? 1 : 0;
-    }
-    D(printf(" drive state is:  %d\n", state));
-    return state;
-}
-char *state_name(int i)
-{
-    if (i == -1) return "unknown";
-    if (i == 0) return "sleeping";
-    if (i == 1) return "active";
-    return "internal error";
-}
-char *myctime(time_t time)
-{
-    char *ts = ctime(&time);
-    ts[strlen(ts) - 1] = 0;
-    return ts;
-}
-void measure(int fd)
-{
-    time_t start_time;
-    int last_state;
-    time_t last_time;
-    int curr_state;
-    time_t curr_time = 0;
-    time_t time_diff;
-    time_t active_time = 0;
-    time_t sleep_time = 0;
-    time_t unknown_time = 0;
-    time_t total_time = 0;
-    int changes = 0;
-    float tmp;
-    printf("Starting measurements\n");
-    last_state = check_powermode(fd);
-    start_time = last_time = time(0);
-    printf("  System is in state %s\n\n", state_name(last_state));
-    while(!endit) {
-        sleep(1);
-        curr_state = check_powermode(fd);
-        if (curr_state != last_state || endit) {
-            changes++;
-            curr_time = time(0);
-            time_diff = curr_time - last_time;
-            if (last_state == 1) active_time += time_diff;
-            else if (last_state == 0) sleep_time += time_diff;
-            else unknown_time += time_diff;
-            last_state = curr_state;
-            last_time = curr_time;
-            printf("%s: State-change to %s\n", myctime(curr_time),
-                   state_name(curr_state));
-        }
-    }
-    changes--; /* Compensate for SIGINT */
-    total_time = time(0) - start_time;
-    printf("\nTotal running time:  %lus\n", curr_time - start_time);
-    printf(" State changed %d times\n", changes);
-    tmp = (float)sleep_time / (float)total_time * 100;
-    printf(" Time in sleep state:   %lus (%.2f%%)\n", sleep_time, tmp);
-    tmp = (float)active_time / (float)total_time * 100;
-    printf(" Time in active state:  %lus (%.2f%%)\n", active_time, tmp);
-    tmp = (float)unknown_time / (float)total_time * 100;
-    printf(" Time in unknown state: %lus (%.2f%%)\n", unknown_time, tmp);
-}
-void ender(int s)
-{
-    endit = 1;
-}
-void usage()
-{
-    puts("usage: dslm [-w <time>] <disk>");
-    exit(0);
-}
-int main(int argc, char **argv)
-{
-    int fd;
-    char *disk = 0;
-    int settle_time = 60;
-    /* Parse the simple command-line */
-    if (argc == 2)
-        disk = argv[1];
-    else if (argc == 4) {
-        settle_time = atoi(argv[2]);
-        disk = argv[3];
-    } else
-        usage();
-    if (!(fd = open(disk, O_RDONLY|O_NONBLOCK))) {
-        printf("Can't open %s, because: %s\n", disk, strerror(errno));
-        exit(-1);
-    }
-    if (settle_time) {
-        printf("Waiting %d seconds for the system to settle down to "
-               "'normal'\n", settle_time);
-        sleep(settle_time);
-    } else
-        puts("Not waiting for system to settle down");
-    signal(SIGINT, ender);
-    measure(fd);
-    close(fd);
-    return 0;
-}
---------------------------dslm.c END-------------------------------------------
diff --git a/Documentation/serial/tty.txt b/Documentation/serial/tty.txt
index 5e5349a4fcd2..7c900507279f 100644
--- a/Documentation/serial/tty.txt
+++ b/Documentation/serial/tty.txt
@@ -105,6 +105,10 @@ write_wakeup()	-	May be called at any point between open and close.
                        is permitted to call the driver write method from
                        this function. In such a situation defer it.
+dcd_change()    -       Report to the tty line the current DCD pin status
+                        changes and the relative timestamp. The timestamp
+                        can be NULL.
 Driver Access
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 33df82e3a398..bfcbbf88c44d 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1812,7 +1812,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
  Module snd-ua101
  ----------------
-    Module for the Edirol UA-101 audio/MIDI interface.
+    Module for the Edirol UA-101/UA-1000 audio/MIDI interfaces.
    This module supports multiple devices, autoprobe and hotplugging.
diff --git a/Documentation/sysctl/vm.txt b/Documentation/sysctl/vm.txt
index fc5790d36cd9..6c7d18c53f84 100644
--- a/Documentation/sysctl/vm.txt
+++ b/Documentation/sysctl/vm.txt
@@ -573,11 +573,14 @@ Because other nodes' memory may be free. This means system total status
 may be not fatal yet.
 If this is set to 2, the kernel panics compulsorily even on the
-above-mentioned.
+above-mentioned. Even oom happens under memory cgroup, the whole
+system panics.
 The default value is 0.
 1 and 2 are for failover of clustering. Please select either
 according to your policy of failover.
+panic_on_oom=2+kdump gives you very strong tool to investigate
+why oom happens. You can get snapshot.
 =============================================================
diff --git a/Documentation/timers/00-INDEX b/Documentation/timers/00-INDEX
index 397dc35e1323..a9248da5cdbc 100644
--- a/Documentation/timers/00-INDEX
+++ b/Documentation/timers/00-INDEX
@@ -4,6 +4,8 @@ highres.txt
        - High resolution timers and dynamic ticks design notes
 hpet.txt
        - High Precision Event Timer Driver for Linux
+hpet_example.c
+        - sample hpet timer test program
 hrtimers.txt
        - subsystem for high-resolution kernel timers
 timer_stats.txt
diff --git a/Documentation/timers/Makefile b/Documentation/timers/Makefile
new file mode 100644
index 000000000000..c85625f4ab25
--- /dev/null
+++ b/Documentation/timers/Makefile
@@ -0,0 +1,8 @@
+# kbuild trick to avoid linker error. Can be omitted if a module is built.
+obj- := dummy.o
+# List of programs to build
+hostprogs-y := hpet_example
+# Tell kbuild to always build the programs
+always := $(hostprogs-y)
diff --git a/Documentation/timers/hpet.txt b/Documentation/timers/hpet.txt
index 16d25e6b5a00..767392ffd31e 100644
--- a/Documentation/timers/hpet.txt
+++ b/Documentation/timers/hpet.txt
@@ -26,274 +26,5 @@ initialization.  An example of this initialization can be found in
 arch/x86/kernel/hpet.c.
 The driver provides a userspace API which resembles the API found in the
-RTC driver framework.  An example user space program is provided below.
+RTC driver framework.  An example user space program is provided in
+file:Documentation/timers/hpet_example.c
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <memory.h>
-#include <malloc.h>
-#include <time.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/time.h>
-#include <linux/hpet.h>
-extern void hpet_open_close(int, const char **);
-extern void hpet_info(int, const char **);
-extern void hpet_poll(int, const char **);
-extern void hpet_fasync(int, const char **);
-extern void hpet_read(int, const char **);
-#include <sys/poll.h>
-#include <sys/ioctl.h>
-#include <signal.h>
-struct hpet_command {
-        char            *command;
-        void            (*func)(int argc, const char ** argv);
-} hpet_command[] = {
-        {
-                "open-close",
-                hpet_open_close
-        },
-        {
-                "info",
-                hpet_info
-        },
-        {
-                "poll",
-                hpet_poll
-        },
-        {
-                "fasync",
-                hpet_fasync
-        },
-};
-int
-main(int argc, const char ** argv)
-{
-        int     i;
-        argc--;
-        argv++;
-        if (!argc) {
-                fprintf(stderr, "-hpet: requires command\n");
-                return -1;
-        }
-        for (i = 0; i < (sizeof (hpet_command) / sizeof (hpet_command[0])); i++)
-                if (!strcmp(argv[0], hpet_command[i].command)) {
-                        argc--;
-                        argv++;
-                        fprintf(stderr, "-hpet: executing %s\n",
-                                hpet_command[i].command);
-                        hpet_command[i].func(argc, argv);
-                        return 0;
-                }
-        fprintf(stderr, "do_hpet: command %s not implemented\n", argv[0]);
-        return -1;
-}
-void
-hpet_open_close(int argc, const char **argv)
-{
-        int     fd;
-        if (argc != 1) {
-                fprintf(stderr, "hpet_open_close: device-name\n");
-                return;
-        }
-        fd = open(argv[0], O_RDONLY);
-        if (fd < 0)
-                fprintf(stderr, "hpet_open_close: open failed\n");
-        else
-                close(fd);
-        return;
-}
-void
-hpet_info(int argc, const char **argv)
-{
-}
-void
-hpet_poll(int argc, const char **argv)
-{
-        unsigned long           freq;
-        int                     iterations, i, fd;
-        struct pollfd           pfd;
-        struct hpet_info        info;
-        struct timeval          stv, etv;
-        struct timezone         tz;
-        long                    usec;
-        if (argc != 3) {
-                fprintf(stderr, "hpet_poll: device-name freq iterations\n");
-                return;
-        }
-        freq = atoi(argv[1]);
-        iterations = atoi(argv[2]);
-        fd = open(argv[0], O_RDONLY);
-        if (fd < 0) {
-                fprintf(stderr, "hpet_poll: open of %s failed\n", argv[0]);
-                return;
-        }
-        if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
-                fprintf(stderr, "hpet_poll: HPET_IRQFREQ failed\n");
-                goto out;
-        }
-        if (ioctl(fd, HPET_INFO, &info) < 0) {
-                fprintf(stderr, "hpet_poll: failed to get info\n");
-                goto out;
-        }
-        fprintf(stderr, "hpet_poll: info.hi_flags 0x%lx\n", info.hi_flags);
-        if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
-                fprintf(stderr, "hpet_poll: HPET_EPI failed\n");
-                goto out;
-        }
-        if (ioctl(fd, HPET_IE_ON, 0) < 0) {
-                fprintf(stderr, "hpet_poll, HPET_IE_ON failed\n");
-                goto out;
-        }
-        pfd.fd = fd;
-        pfd.events = POLLIN;
-        for (i = 0; i < iterations; i++) {
-                pfd.revents = 0;
-                gettimeofday(&stv, &tz);
-                if (poll(&pfd, 1, -1) < 0)
-                        fprintf(stderr, "hpet_poll: poll failed\n");
-                else {
-                        long    data;
-                        gettimeofday(&etv, &tz);
-                        usec = stv.tv_sec * 1000000 + stv.tv_usec;
-                        usec = (etv.tv_sec * 1000000 + etv.tv_usec) - usec;
-                        fprintf(stderr,
-                                "hpet_poll: expired time = 0x%lx\n", usec);
-                        fprintf(stderr, "hpet_poll: revents = 0x%x\n",
-                                pfd.revents);
-                        if (read(fd, &data, sizeof(data)) != sizeof(data)) {
-                                fprintf(stderr, "hpet_poll: read failed\n");
-                        }
-                        else
-                                fprintf(stderr, "hpet_poll: data 0x%lx\n",
-                                        data);
-                }
-        }
-out:
-        close(fd);
-        return;
-}
-static int hpet_sigio_count;
-static void
-hpet_sigio(int val)
-{
-        fprintf(stderr, "hpet_sigio: called\n");
-        hpet_sigio_count++;
-}
-void
-hpet_fasync(int argc, const char **argv)
-{
-        unsigned long           freq;
-        int                     iterations, i, fd, value;
-        sig_t                   oldsig;
-        struct hpet_info        info;
-        hpet_sigio_count = 0;
-        fd = -1;
-        if ((oldsig = signal(SIGIO, hpet_sigio)) == SIG_ERR) {
-                fprintf(stderr, "hpet_fasync: failed to set signal handler\n");
-                return;
-        }
-        if (argc != 3) {
-                fprintf(stderr, "hpet_fasync: device-name freq iterations\n");
-                goto out;
-        }
-        fd = open(argv[0], O_RDONLY);
-        if (fd < 0) {
-                fprintf(stderr, "hpet_fasync: failed to open %s\n", argv[0]);
-                return;
-        }
-        if ((fcntl(fd, F_SETOWN, getpid()) == 1) ||
-                ((value = fcntl(fd, F_GETFL)) == 1) ||
-                (fcntl(fd, F_SETFL, value | O_ASYNC) == 1)) {
-                fprintf(stderr, "hpet_fasync: fcntl failed\n");
-                goto out;
-        }
-        freq = atoi(argv[1]);
-        iterations = atoi(argv[2]);
-        if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
-                fprintf(stderr, "hpet_fasync: HPET_IRQFREQ failed\n");
-                goto out;
-        }
-        if (ioctl(fd, HPET_INFO, &info) < 0) {
-                fprintf(stderr, "hpet_fasync: failed to get info\n");
-                goto out;
-        }
-        fprintf(stderr, "hpet_fasync: info.hi_flags 0x%lx\n", info.hi_flags);
-        if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
-                fprintf(stderr, "hpet_fasync: HPET_EPI failed\n");
-                goto out;
-        }
-        if (ioctl(fd, HPET_IE_ON, 0) < 0) {
-                fprintf(stderr, "hpet_fasync, HPET_IE_ON failed\n");
-                goto out;
-        }
-        for (i = 0; i < iterations; i++) {
-                (void) pause();
-                fprintf(stderr, "hpet_fasync: count = %d\n", hpet_sigio_count);
-        }
-out:
-        signal(SIGIO, oldsig);
-        if (fd >= 0)
-                close(fd);
-        return;
-}
diff --git a/Documentation/timers/hpet_example.c b/Documentation/timers/hpet_example.c
new file mode 100644
index 000000000000..f9ce2d9fdfd5
--- /dev/null
+++ b/Documentation/timers/hpet_example.c
@@ -0,0 +1,269 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <memory.h>
+#include <malloc.h>
+#include <time.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <linux/hpet.h>
+extern void hpet_open_close(int, const char **);
+extern void hpet_info(int, const char **);
+extern void hpet_poll(int, const char **);
+extern void hpet_fasync(int, const char **);
+extern void hpet_read(int, const char **);
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+#include <signal.h>
+struct hpet_command {
+        char            *command;
+        void            (*func)(int argc, const char ** argv);
+} hpet_command[] = {
+        {
+                "open-close",
+                hpet_open_close
+        },
+        {
+                "info",
+                hpet_info
+        },
+        {
+                "poll",
+                hpet_poll
+        },
+        {
+                "fasync",
+                hpet_fasync
+        },
+};
+int
+main(int argc, const char ** argv)
+{
+        int     i;
+        argc--;
+        argv++;
+        if (!argc) {
+                fprintf(stderr, "-hpet: requires command\n");
+                return -1;
+        }
+        for (i = 0; i < (sizeof (hpet_command) / sizeof (hpet_command[0])); i++)
+                if (!strcmp(argv[0], hpet_command[i].command)) {
+                        argc--;
+                        argv++;
+                        fprintf(stderr, "-hpet: executing %s\n",
+                                hpet_command[i].command);
+                        hpet_command[i].func(argc, argv);
+                        return 0;
+                }
+        fprintf(stderr, "do_hpet: command %s not implemented\n", argv[0]);
+        return -1;
+}
+void
+hpet_open_close(int argc, const char **argv)
+{
+        int     fd;
+        if (argc != 1) {
+                fprintf(stderr, "hpet_open_close: device-name\n");
+                return;
+        }
+        fd = open(argv[0], O_RDONLY);
+        if (fd < 0)
+                fprintf(stderr, "hpet_open_close: open failed\n");
+        else
+                close(fd);
+        return;
+}
+void
+hpet_info(int argc, const char **argv)
+{
+}
+void
+hpet_poll(int argc, const char **argv)
+{
+        unsigned long           freq;
+        int                     iterations, i, fd;
+        struct pollfd           pfd;
+        struct hpet_info        info;
+        struct timeval          stv, etv;
+        struct timezone         tz;
+        long                    usec;
+        if (argc != 3) {
+                fprintf(stderr, "hpet_poll: device-name freq iterations\n");
+                return;
+        }
+        freq = atoi(argv[1]);
+        iterations = atoi(argv[2]);
+        fd = open(argv[0], O_RDONLY);
+        if (fd < 0) {
+                fprintf(stderr, "hpet_poll: open of %s failed\n", argv[0]);
+                return;
+        }
+        if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
+                fprintf(stderr, "hpet_poll: HPET_IRQFREQ failed\n");
+                goto out;
+        }
+        if (ioctl(fd, HPET_INFO, &info) < 0) {
+                fprintf(stderr, "hpet_poll: failed to get info\n");
+                goto out;
+        }
+        fprintf(stderr, "hpet_poll: info.hi_flags 0x%lx\n", info.hi_flags);
+        if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
+                fprintf(stderr, "hpet_poll: HPET_EPI failed\n");
+                goto out;
+        }
+        if (ioctl(fd, HPET_IE_ON, 0) < 0) {
+                fprintf(stderr, "hpet_poll, HPET_IE_ON failed\n");
+                goto out;
+        }
+        pfd.fd = fd;
+        pfd.events = POLLIN;
+        for (i = 0; i < iterations; i++) {
+                pfd.revents = 0;
+                gettimeofday(&stv, &tz);
+                if (poll(&pfd, 1, -1) < 0)
+                        fprintf(stderr, "hpet_poll: poll failed\n");
+                else {
+                        long    data;
+                        gettimeofday(&etv, &tz);
+                        usec = stv.tv_sec * 1000000 + stv.tv_usec;
+                        usec = (etv.tv_sec * 1000000 + etv.tv_usec) - usec;
+                        fprintf(stderr,
+                                "hpet_poll: expired time = 0x%lx\n", usec);
+                        fprintf(stderr, "hpet_poll: revents = 0x%x\n",
+                                pfd.revents);
+                        if (read(fd, &data, sizeof(data)) != sizeof(data)) {
+                                fprintf(stderr, "hpet_poll: read failed\n");
+                        }
+                        else
+                                fprintf(stderr, "hpet_poll: data 0x%lx\n",
+                                        data);
+                }
+        }
+out:
+        close(fd);
+        return;
+}
+static int hpet_sigio_count;
+static void
+hpet_sigio(int val)
+{
+        fprintf(stderr, "hpet_sigio: called\n");
+        hpet_sigio_count++;
+}
+void
+hpet_fasync(int argc, const char **argv)
+{
+        unsigned long           freq;
+        int                     iterations, i, fd, value;
+        sig_t                   oldsig;
+        struct hpet_info        info;
+        hpet_sigio_count = 0;
+        fd = -1;
+        if ((oldsig = signal(SIGIO, hpet_sigio)) == SIG_ERR) {
+                fprintf(stderr, "hpet_fasync: failed to set signal handler\n");
+                return;
+        }
+        if (argc != 3) {
+                fprintf(stderr, "hpet_fasync: device-name freq iterations\n");
+                goto out;
+        }
+        fd = open(argv[0], O_RDONLY);
+        if (fd < 0) {
+                fprintf(stderr, "hpet_fasync: failed to open %s\n", argv[0]);
+                return;
+        }
+        if ((fcntl(fd, F_SETOWN, getpid()) == 1) ||
+                ((value = fcntl(fd, F_GETFL)) == 1) ||
+                (fcntl(fd, F_SETFL, value | O_ASYNC) == 1)) {
+                fprintf(stderr, "hpet_fasync: fcntl failed\n");
+                goto out;
+        }
+        freq = atoi(argv[1]);
+        iterations = atoi(argv[2]);
+        if (ioctl(fd, HPET_IRQFREQ, freq) < 0) {
+                fprintf(stderr, "hpet_fasync: HPET_IRQFREQ failed\n");
+                goto out;
+        }
+        if (ioctl(fd, HPET_INFO, &info) < 0) {
+                fprintf(stderr, "hpet_fasync: failed to get info\n");
+                goto out;
+        }
+        fprintf(stderr, "hpet_fasync: info.hi_flags 0x%lx\n", info.hi_flags);
+        if (info.hi_flags && (ioctl(fd, HPET_EPI, 0) < 0)) {
+                fprintf(stderr, "hpet_fasync: HPET_EPI failed\n");
+                goto out;
+        }
+        if (ioctl(fd, HPET_IE_ON, 0) < 0) {
+                fprintf(stderr, "hpet_fasync, HPET_IE_ON failed\n");
+                goto out;
+        }
+        for (i = 0; i < iterations; i++) {
+                (void) pause();
+                fprintf(stderr, "hpet_fasync: count = %d\n", hpet_sigio_count);
+        }
+out:
+        signal(SIGIO, oldsig);
+        if (fd >= 0)
+                close(fd);
+        return;
+}
diff --git a/Documentation/vm/00-INDEX b/Documentation/vm/00-INDEX
index e57d6a9dd32b..dca82d7c83d8 100644
--- a/Documentation/vm/00-INDEX
+++ b/Documentation/vm/00-INDEX
@@ -4,23 +4,35 @@ active_mm.txt
        - An explanation from Linus about tsk->active_mm vs tsk->mm.
 balance
        - various information on memory balancing.
+hugepage-mmap.c
+        - Example app using huge page memory with the mmap system call.
+hugepage-shm.c
+        - Example app using huge page memory with Sys V shared memory system calls.
 hugetlbpage.txt
        - a brief summary of hugetlbpage support in the Linux kernel.
+hwpoison.txt
+        - explains what hwpoison is
 ksm.txt
        - how to use the Kernel Samepage Merging feature.
 locking
        - info on how locking and synchronization is done in the Linux vm code.
+map_hugetlb.c
+        - an example program that uses the MAP_HUGETLB mmap flag.
 numa
        - information about NUMA specific code in the Linux vm.
 numa_memory_policy.txt
        - documentation of concepts and APIs of the 2.6 memory policy support.
 overcommit-accounting
        - description of the Linux kernels overcommit handling modes.
+page-types.c
+        - Tool for querying page flags
 page_migration
        - description of page migration in NUMA systems.
+pagemap.txt
+        - pagemap, from the userspace perspective
 slabinfo.c
        - source code for a tool to get reports about slabs.
 slub.txt
        - a short users guide for SLUB.
-map_hugetlb.c
+unevictable-lru.txt
-        - an example program that uses the MAP_HUGETLB mmap flag.
+        - Unevictable LRU infrastructure
diff --git a/Documentation/vm/Makefile b/Documentation/vm/Makefile
index 5bd269b3731a..9dcff328b964 100644
--- a/Documentation/vm/Makefile
+++ b/Documentation/vm/Makefile
@@ -2,7 +2,7 @@
 obj- := dummy.o
 # List of programs to build
-hostprogs-y := slabinfo page-types
+hostprogs-y := slabinfo page-types hugepage-mmap hugepage-shm map_hugetlb
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)
diff --git a/Documentation/vm/hugepage-mmap.c b/Documentation/vm/hugepage-mmap.c
new file mode 100644
index 000000000000..db0dd9a33d54
--- /dev/null
+++ b/Documentation/vm/hugepage-mmap.c
@@ -0,0 +1,91 @@
+/*
+ * hugepage-mmap:
+ *
+ * Example of using huge page memory in a user application using the mmap
+ * system call.  Before running this application, make sure that the
+ * administrator has mounted the hugetlbfs filesystem (on some directory
+ * like /mnt) using the command mount -t hugetlbfs nodev /mnt. In this
+ * example, the app is requesting memory of size 256MB that is backed by
+ * huge pages.
+ *
+ * For the ia64 architecture, the Linux kernel reserves Region number 4 for
+ * huge pages.  That means that if one requires a fixed address, a huge page
+ * aligned address starting with 0x800000... will be required.  If a fixed
+ * address is not required, the kernel will select an address in the proper
+ * range.
+ * Other architectures, such as ppc64, i386 or x86_64 are not so constrained.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#define FILE_NAME "/mnt/hugepagefile"
+#define LENGTH (256UL*1024*1024)
+#define PROTECTION (PROT_READ | PROT_WRITE)
+/* Only ia64 requires this */
+#ifdef __ia64__
+#define ADDR (void *)(0x8000000000000000UL)
+#define FLAGS (MAP_SHARED | MAP_FIXED)
+#else
+#define ADDR (void *)(0x0UL)
+#define FLAGS (MAP_SHARED)
+#endif
+static void check_bytes(char *addr)
+{
+        printf("First hex is %x\n", *((unsigned int *)addr));
+}
+static void write_bytes(char *addr)
+{
+        unsigned long i;
+        for (i = 0; i < LENGTH; i++)
+                *(addr + i) = (char)i;
+}
+static void read_bytes(char *addr)
+{
+        unsigned long i;
+        check_bytes(addr);
+        for (i = 0; i < LENGTH; i++)
+                if (*(addr + i) != (char)i) {
+                        printf("Mismatch at %lu\n", i);
+                        break;
+                }
+}
+int main(void)
+{
+        void *addr;
+        int fd;
+        fd = open(FILE_NAME, O_CREAT | O_RDWR, 0755);
+        if (fd < 0) {
+                perror("Open failed");
+                exit(1);
+        }
+        addr = mmap(ADDR, LENGTH, PROTECTION, FLAGS, fd, 0);
+        if (addr == MAP_FAILED) {
+                perror("mmap");
+                unlink(FILE_NAME);
+                exit(1);
+        }
+        printf("Returned address is %p\n", addr);
+        check_bytes(addr);
+        write_bytes(addr);
+        read_bytes(addr);
+        munmap(addr, LENGTH);
+        close(fd);
+        unlink(FILE_NAME);
+        return 0;
+}
diff --git a/Documentation/vm/hugepage-shm.c b/Documentation/vm/hugepage-shm.c
new file mode 100644
index 000000000000..07956d8592c9
--- /dev/null
+++ b/Documentation/vm/hugepage-shm.c
@@ -0,0 +1,98 @@
+/*
+ * hugepage-shm:
+ *
+ * Example of using huge page memory in a user application using Sys V shared
+ * memory system calls.  In this example the app is requesting 256MB of
+ * memory that is backed by huge pages.  The application uses the flag
+ * SHM_HUGETLB in the shmget system call to inform the kernel that it is
+ * requesting huge pages.
+ *
+ * For the ia64 architecture, the Linux kernel reserves Region number 4 for
+ * huge pages.  That means that if one requires a fixed address, a huge page
+ * aligned address starting with 0x800000... will be required.  If a fixed
+ * address is not required, the kernel will select an address in the proper
+ * range.
+ * Other architectures, such as ppc64, i386 or x86_64 are not so constrained.
+ *
+ * Note: The default shared memory limit is quite low on many kernels,
+ * you may need to increase it via:
+ *
+ * echo 268435456 > /proc/sys/kernel/shmmax
+ *
+ * This will increase the maximum size per shared memory segment to 256MB.
+ * The other limit that you will hit eventually is shmall which is the
+ * total amount of shared memory in pages. To set it to 16GB on a system
+ * with a 4kB pagesize do:
+ *
+ * echo 4194304 > /proc/sys/kernel/shmall
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/mman.h>
+#ifndef SHM_HUGETLB
+#define SHM_HUGETLB 04000
+#endif
+#define LENGTH (256UL*1024*1024)
+#define dprintf(x)  printf(x)
+/* Only ia64 requires this */
+#ifdef __ia64__
+#define ADDR (void *)(0x8000000000000000UL)
+#define SHMAT_FLAGS (SHM_RND)
+#else
+#define ADDR (void *)(0x0UL)
+#define SHMAT_FLAGS (0)
+#endif
+int main(void)
+{
+        int shmid;
+        unsigned long i;
+        char *shmaddr;
+        if ((shmid = shmget(2, LENGTH,
+                            SHM_HUGETLB | IPC_CREAT | SHM_R | SHM_W)) < 0) {
+                perror("shmget");
+                exit(1);
+        }
+        printf("shmid: 0x%x\n", shmid);
+        shmaddr = shmat(shmid, ADDR, SHMAT_FLAGS);
+        if (shmaddr == (char *)-1) {
+                perror("Shared memory attach failure");
+                shmctl(shmid, IPC_RMID, NULL);
+                exit(2);
+        }
+        printf("shmaddr: %p\n", shmaddr);
+        dprintf("Starting the writes:\n");
+        for (i = 0; i < LENGTH; i++) {
+                shmaddr[i] = (char)(i);
+                if (!(i % (1024 * 1024)))
+                        dprintf(".");
+        }
+        dprintf("\n");
+        dprintf("Starting the Check...");
+        for (i = 0; i < LENGTH; i++)
+                if (shmaddr[i] != (char)i)
+                        printf("\nIndex %lu mismatched\n", i);
+        dprintf("Done.\n");
+        if (shmdt((const void *)shmaddr) != 0) {
+                perror("Detach failure");
+                shmctl(shmid, IPC_RMID, NULL);
+                exit(3);
+        }
+        shmctl(shmid, IPC_RMID, NULL);
+        return 0;
+}
diff --git a/Documentation/vm/hugetlbpage.txt b/Documentation/vm/hugetlbpage.txt
index bc31636973e3..457634c1e03e 100644
--- a/Documentation/vm/hugetlbpage.txt
+++ b/Documentation/vm/hugetlbpage.txt
@@ -299,176 +299,11 @@ map_hugetlb.c.
 *******************************************************************
 /*
- * Example of using huge page memory in a user application using Sys V shared
+ * hugepage-shm:  see Documentation/vm/hugepage-shm.c
- * memory system calls.  In this example the app is requesting 256MB of
- * memory that is backed by huge pages.  The application uses the flag
- * SHM_HUGETLB in the shmget system call to inform the kernel that it is
- * requesting huge pages.
- *
- * For the ia64 architecture, the Linux kernel reserves Region number 4 for
- * huge pages.  That means that if one requires a fixed address, a huge page
- * aligned address starting with 0x800000... will be required.  If a fixed
- * address is not required, the kernel will select an address in the proper
- * range.
- * Other architectures, such as ppc64, i386 or x86_64 are not so constrained.
- *
- * Note: The default shared memory limit is quite low on many kernels,
- * you may need to increase it via:
- *
- * echo 268435456 > /proc/sys/kernel/shmmax
- *
- * This will increase the maximum size per shared memory segment to 256MB.
- * The other limit that you will hit eventually is shmall which is the
- * total amount of shared memory in pages. To set it to 16GB on a system
- * with a 4kB pagesize do:
- *
- * echo 4194304 > /proc/sys/kernel/shmall
 */
-#include <stdlib.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/mman.h>
-#ifndef SHM_HUGETLB
-#define SHM_HUGETLB 04000
-#endif
-#define LENGTH (256UL*1024*1024)
-#define dprintf(x)  printf(x)
-#define ADDR (void *)(0x0UL)    /* let kernel choose address */
-#define SHMAT_FLAGS (0)
-int main(void)
-{
-        int shmid;
-        unsigned long i;
-        char *shmaddr;
-        if ((shmid = shmget(2, LENGTH,
-                            SHM_HUGETLB | IPC_CREAT | SHM_R | SHM_W)) < 0) {
-                perror("shmget");
-                exit(1);
-        }
-        printf("shmid: 0x%x\n", shmid);
-        shmaddr = shmat(shmid, ADDR, SHMAT_FLAGS);
-        if (shmaddr == (char *)-1) {
-                perror("Shared memory attach failure");
-                shmctl(shmid, IPC_RMID, NULL);
-                exit(2);
-        }
-        printf("shmaddr: %p\n", shmaddr);
-        dprintf("Starting the writes:\n");
-        for (i = 0; i < LENGTH; i++) {
-                shmaddr[i] = (char)(i);
-                if (!(i % (1024 * 1024)))
-                        dprintf(".");
-        }
-        dprintf("\n");
-        dprintf("Starting the Check...");
-        for (i = 0; i < LENGTH; i++)
-                if (shmaddr[i] != (char)i)
-                        printf("\nIndex %lu mismatched\n", i);
-        dprintf("Done.\n");
-        if (shmdt((const void *)shmaddr) != 0) {
-                perror("Detach failure");
-                shmctl(shmid, IPC_RMID, NULL);
-                exit(3);
-        }
-        shmctl(shmid, IPC_RMID, NULL);
-        return 0;
-}
 *******************************************************************
 /*
- * Example of using huge page memory in a user application using the mmap
+ * hugepage-mmap:  see Documentation/vm/hugepage-mmap.c
- * system call.  Before running this application, make sure that the
- * administrator has mounted the hugetlbfs filesystem (on some directory
- * like /mnt) using the command mount -t hugetlbfs nodev /mnt. In this
- * example, the app is requesting memory of size 256MB that is backed by
- * huge pages.
- *
- * For the ia64 architecture, the Linux kernel reserves Region number 4 for
- * huge pages.  That means that if one requires a fixed address, a huge page
- * aligned address starting with 0x800000... will be required.  If a fixed
- * address is not required, the kernel will select an address in the proper
- * range.
- * Other architectures, such as ppc64, i386 or x86_64 are not so constrained.
 */
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-#define FILE_NAME "/mnt/hugepagefile"
-#define LENGTH (256UL*1024*1024)
-#define PROTECTION (PROT_READ | PROT_WRITE)
-#define ADDR (void *)(0x0UL)    /* let kernel choose address */
-#define FLAGS (MAP_SHARED)
-void check_bytes(char *addr)
-{
-        printf("First hex is %x\n", *((unsigned int *)addr));
-}
-void write_bytes(char *addr)
-{
-        unsigned long i;
-        for (i = 0; i < LENGTH; i++)
-                *(addr + i) = (char)i;
-}
-void read_bytes(char *addr)
-{
-        unsigned long i;
-        check_bytes(addr);
-        for (i = 0; i < LENGTH; i++)
-                if (*(addr + i) != (char)i) {
-                        printf("Mismatch at %lu\n", i);
-                        break;
-                }
-}
-int main(void)
-{
-        void *addr;
-        int fd;
-        fd = open(FILE_NAME, O_CREAT | O_RDWR, 0755);
-        if (fd < 0) {
-                perror("Open failed");
-                exit(1);
-        }
-        addr = mmap(ADDR, LENGTH, PROTECTION, FLAGS, fd, 0);
-        if (addr == MAP_FAILED) {
-                perror("mmap");
-                unlink(FILE_NAME);
-                exit(1);
-        }
-        printf("Returned address is %p\n", addr);
-        check_bytes(addr);
-        write_bytes(addr);
-        read_bytes(addr);
-        munmap(addr, LENGTH);
-        close(fd);
-        unlink(FILE_NAME);
-        return 0;
-}
diff --git a/Documentation/vm/map_hugetlb.c b/Documentation/vm/map_hugetlb.c
index e2bdae37f499..9969c7d9f985 100644
--- a/Documentation/vm/map_hugetlb.c
+++ b/Documentation/vm/map_hugetlb.c
@@ -31,12 +31,12 @@
 #define FLAGS (MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB)
 #endif
-void check_bytes(char *addr)
+static void check_bytes(char *addr)
 {
        printf("First hex is %x\n", *((unsigned int *)addr));
 }
-void write_bytes(char *addr)
+static void write_bytes(char *addr)
 {
        unsigned long i;
@@ -44,7 +44,7 @@ void write_bytes(char *addr)
                *(addr + i) = (char)i;
 }
-void read_bytes(char *addr)
+static void read_bytes(char *addr)
 {
        unsigned long i;
diff --git a/Documentation/voyager.txt b/Documentation/voyager.txt
deleted file mode 100644
index 2749af552cdf..000000000000
--- a/Documentation/voyager.txt
+++ /dev/null
@@ -1,95 +0,0 @@
-Running Linux on the Voyager Architecture
-=========================================
-For full details and current project status, see
-http://www.hansenpartnership.com/voyager
-The voyager architecture was designed by NCR in the mid 80s to be a
-fully SMP capable RAS computing architecture built around intel's 486
-chip set.  The voyager came in three levels of architectural
-sophistication: 3,4 and 5 --- 1 and 2 never made it out of prototype.
-The linux patches support only the Level 5 voyager architecture (any
-machine class 3435 and above).
-The Voyager Architecture
------------------------
-Voyager machines consist of a Baseboard with a 386 diagnostic
-processor, a Power Supply Interface (PSI) a Primary and possibly
-Secondary Microchannel bus and between 2 and 20 voyager slots.  The
-voyager slots can be populated with memory and cpu cards (up to 4GB
-memory and from 1 486 to 32 Pentium Pro processors).  Internally, the
-voyager has a dual arbitrated system bus and a configuration and test
-bus (CAT).  The voyager bus speed is 40MHz.  Therefore (since all
-voyager cards are dual ported for each system bus) the maximum
-transfer rate is 320Mb/s but only if you have your slot configuration
-tuned (only memory cards can communicate with both busses at once, CPU
-cards utilise them one at a time).
-Voyager SMP
-----------
-Since voyager was the first intel based SMP system, it is slightly
-more primitive than the Intel IO-APIC approach to SMP.  Voyager allows
-arbitrary interrupt routing (including processor affinity routing) of
-all 16 PC type interrupts.  However it does this by using a modified
-5259 master/slave chip set instead of an APIC bus.  Additionally,
-voyager supports Cross Processor Interrupts (CPI) equivalent to the
-APIC IPIs.  There are two routed voyager interrupt lines provided to
-each slot.
-Processor Cards
---------------
-These come in single, dyadic and quad configurations (the quads are
-problematic--see later).  The maximum configuration is 8 quad cards
-for 32 way SMP.
-Quad Processors
---------------
-Because voyager only supplies two interrupt lines to each Processor
-card, the Quad processors have to be configured (and Bootstrapped) in
-as a pair of Master/Slave processors.
-In fact, most Quad cards only accept one VIC interrupt line, so they
-have one interrupt handling processor (called the VIC extended
-processor) and three non-interrupt handling processors.
-Current Status
--------------
-The System will boot on Mono, Dyad and Quad cards.  There was
-originally a Quad boot problem which has been fixed by proper gdt
-alignment in the initial boot loader.  If you still cannot get your
-voyager system to boot, email me at:
-<J.E.J.Bottomley@HansenPartnership.com>
-The Quad cards now support using the separate Quad CPI vectors instead
-of going through the VIC mailbox system.
-The Level 4 architecture (3430 and 3360 Machines) should also work
-fine.
-Dump Switch
-----------
-The voyager dump switch sends out a broadcast NMI which the voyager
-code intercepts and does a task dump.
-Power Switch
------------
-The front panel power switch is intercepted by the kernel and should
-cause a system shutdown and power off.
-A Note About Mixed CPU Systems
------------------------------
-Linux isn't designed to handle mixed CPU systems very well.  In order
-to get everything going you *must* make sure that your lowest
-capability CPU is used for booting.  Also, mixing CPU classes
-(e.g. 486 and 586) is really not going to work very well at all.