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Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6

This commit is contained in:
Steve French 2008-05-06 17:55:32 +00:00
parent 5ade9deaaa a15306365a
commit a815752ac0
2353 changed files with 93736 additions and 39336 deletions
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1
.gitignore vendored
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@ -41,6 +41,7 @@ include/linux/autoconf.h
include/linux/compile.h
include/linux/version.h
include/linux/utsrelease.h
include/linux/bounds.h
# stgit generated dirs
patches-*

1
.mailmap
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@ -88,6 +88,7 @@ Rudolf Marek <R.Marek@sh.cvut.cz>
Rui Saraiva <rmps@joel.ist.utl.pt>
Sachin P Sant <ssant@in.ibm.com>
Sam Ravnborg <sam@mars.ravnborg.org>
S.Çağlar Onur <caglar@pardus.org.tr>
Simon Kelley <simon@thekelleys.org.uk>
Stéphane Witzmann <stephane.witzmann@ubpmes.univ-bpclermont.fr>
Stephen Hemminger <shemminger@osdl.org>

46
Documentation/ABI/testing/sysfs-class-bdi Normal file
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@ -0,0 +1,46 @@
What: /sys/class/bdi/<bdi>/
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
Description:
Provide a place in sysfs for the backing_dev_info object. This allows
setting and retrieving various BDI specific variables.
The <bdi> identifier can be either of the following:
MAJOR:MINOR
Device number for block devices, or value of st_dev on
non-block filesystems which provide their own BDI, such as NFS
and FUSE.
default
The default backing dev, used for non-block device backed
filesystems which do not provide their own BDI.
Files under /sys/class/bdi/<bdi>/
---------------------------------
read_ahead_kb (read-write)
Size of the read-ahead window in kilobytes
min_ratio (read-write)
Under normal circumstances each device is given a part of the
total write-back cache that relates to its current average
writeout speed in relation to the other devices.
The 'min_ratio' parameter allows assigning a minimum
percentage of the write-back cache to a particular device.
For example, this is useful for providing a minimum QoS.
max_ratio (read-write)
Allows limiting a particular device to use not more than the
given percentage of the write-back cache. This is useful in
situations where we want to avoid one device taking all or
most of the write-back cache. For example in case of an NFS
mount that is prone to get stuck, or a FUSE mount which cannot
be trusted to play fair.

69
Documentation/DMA-API.txt
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@ -145,7 +145,7 @@ Part Ic - DMA addressing limitations
int
dma_supported(struct device *dev, u64 mask)
int
pci_dma_supported(struct device *dev, u64 mask)
pci_dma_supported(struct pci_dev *hwdev, u64 mask)
Checks to see if the device can support DMA to the memory described by
mask.
@ -189,7 +189,7 @@ 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 device *dev, void *cpu_addr, size_t size,
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
@ -395,6 +395,71 @@ Notes: You must do this:
See also dma_map_single().
dma_addr_t
dma_map_single_attrs(struct device *dev, void *cpu_addr, size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
void
dma_unmap_single_attrs(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs)
int
dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
void
dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sgl,
int nents, enum dma_data_direction dir,
struct dma_attrs *attrs)
The four functions above are just like the counterpart functions
without the _attrs suffixes, except that they pass an optional
struct dma_attrs*.
struct dma_attrs encapsulates a set of "dma attributes". For the
definition of struct dma_attrs see linux/dma-attrs.h.
The interpretation of dma attributes is architecture-specific, and
each attribute should be documented in Documentation/DMA-attributes.txt.
If struct dma_attrs* is NULL, the semantics of each of these
functions is identical to those of the corresponding function
without the _attrs suffix. As a result dma_map_single_attrs()
can generally replace dma_map_single(), etc.
As an example of the use of the *_attrs functions, here's how
you could pass an attribute DMA_ATTR_FOO when mapping memory
for DMA:
#include <linux/dma-attrs.h>
/* DMA_ATTR_FOO should be defined in linux/dma-attrs.h and
* documented in Documentation/DMA-attributes.txt */
...
DEFINE_DMA_ATTRS(attrs);
dma_set_attr(DMA_ATTR_FOO, &attrs);
....
n = dma_map_sg_attrs(dev, sg, nents, DMA_TO_DEVICE, &attr);
....
Architectures that care about DMA_ATTR_FOO would check for its
presence in their implementations of the mapping and unmapping
routines, e.g.:
void whizco_dma_map_sg_attrs(struct device *dev, dma_addr_t dma_addr,
size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
....
int foo = dma_get_attr(DMA_ATTR_FOO, attrs);
....
if (foo)
/* twizzle the frobnozzle */
....
Part II - Advanced dma_ usage
-----------------------------

24
Documentation/DMA-attributes.txt Normal file
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@ -0,0 +1,24 @@
DMA attributes
==============
This document describes the semantics of the DMA attributes that are
defined in linux/dma-attrs.h.
DMA_ATTR_WRITE_BARRIER
----------------------
DMA_ATTR_WRITE_BARRIER is a (write) barrier attribute for DMA. DMA
to a memory region with the DMA_ATTR_WRITE_BARRIER attribute forces
all pending DMA writes to complete, and thus provides a mechanism to
strictly order DMA from a device across all intervening busses and
bridges. This barrier is not specific to a particular type of
interconnect, it applies to the system as a whole, and so its
implementation must account for the idiosyncracies of the system all
the way from the DMA device to memory.
As an example of a situation where DMA_ATTR_WRITE_BARRIER would be
useful, suppose that a device does a DMA write to indicate that data is
ready and available in memory. The DMA of the "completion indication"
could race with data DMA. Mapping the memory used for completion
indications with DMA_ATTR_WRITE_BARRIER would prevent the race.

38
Documentation/DMA-mapping.txt
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@ -315,11 +315,11 @@ you should do:
dma_addr_t dma_handle;
cpu_addr = pci_alloc_consistent(dev, size, &dma_handle);
cpu_addr = pci_alloc_consistent(pdev, size, &dma_handle);
where dev is a struct pci_dev *. You should pass NULL for PCI like buses
where devices don't have struct pci_dev (like ISA, EISA). This may be
called in interrupt context.
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
specific (and often is private to the bus which the device is attached
@ -332,7 +332,7 @@ __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 consistent DMA mapping interfaces, for non-NULL dev, will by
The consistent DMA mapping interfaces, for non-NULL pdev, will by
default return a DMA address which is SAC (Single Address Cycle)
addressable. Even if the device indicates (via PCI dma mask) that it
may address the upper 32-bits and thus perform DAC cycles, consistent
@ -354,9 +354,9 @@ buffer you receive will not cross a 64K boundary.
To unmap and free such a DMA region, you call:
pci_free_consistent(dev, size, cpu_addr, dma_handle);
pci_free_consistent(pdev, size, cpu_addr, dma_handle);
where dev, size are the same as in the above call and cpu_addr and
where pdev, size are the same as in the above call and cpu_addr and
dma_handle are the values pci_alloc_consistent returned to you.
This function may not be called in interrupt context.
@ -371,9 +371,9 @@ Create a pci_pool like this:
struct pci_pool *pool;
pool = pci_pool_create(name, dev, size, align, alloc);
pool = pci_pool_create(name, pdev, size, align, alloc);
The "name" is for diagnostics (like a kmem_cache name); dev and size
The "name" is for diagnostics (like a kmem_cache name); pdev 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,
@ -472,11 +472,11 @@ To map a single region, you do:
void *addr = buffer->ptr;
size_t size = buffer->len;
dma_handle = pci_map_single(dev, addr, size, direction);
dma_handle = pci_map_single(pdev, addr, size, direction);
and to unmap it:
pci_unmap_single(dev, dma_handle, size, direction);
pci_unmap_single(pdev, dma_handle, size, direction);
You should call pci_unmap_single when the DMA activity is finished, e.g.
from the interrupt which told you that the DMA transfer is done.
@ -493,17 +493,17 @@ Specifically:
unsigned long offset = buffer->offset;
size_t size = buffer->len;
dma_handle = pci_map_page(dev, page, offset, size, direction);
dma_handle = pci_map_page(pdev, page, offset, size, direction);
...
pci_unmap_page(dev, dma_handle, size, direction);
pci_unmap_page(pdev, 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(dev, sglist, nents, direction);
int i, count = pci_map_sg(pdev, sglist, nents, direction);
struct scatterlist *sg;
for_each_sg(sglist, sg, count, i) {
@ -527,7 +527,7 @@ accessed sg->address and sg->length as shown above.
To unmap a scatterlist, just call:
pci_unmap_sg(dev, sglist, nents, direction);
pci_unmap_sg(pdev, sglist, nents, direction);
Again, make sure DMA activity has already finished.
@ -550,11 +550,11 @@ correct copy of the DMA buffer.
So, firstly, just map it with pci_map_{single,sg}, and after each DMA
transfer call either:
pci_dma_sync_single_for_cpu(dev, dma_handle, size, direction);
pci_dma_sync_single_for_cpu(pdev, dma_handle, size, direction);
or:
pci_dma_sync_sg_for_cpu(dev, sglist, nents, direction);
pci_dma_sync_sg_for_cpu(pdev, sglist, nents, direction);
as appropriate.
@ -562,7 +562,7 @@ 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(dev, dma_handle, size, direction);
pci_dma_sync_single_for_device(pdev, dma_handle, size, direction);
or:
@ -739,7 +739,7 @@ failure can be determined by:
dma_addr_t dma_handle;
dma_handle = pci_map_single(dev, addr, size, direction);
dma_handle = pci_map_single(pdev, addr, size, direction);
if (pci_dma_mapping_error(dma_handle)) {
/*
* reduce current DMA mapping usage,

2
Documentation/DocBook/Makefile
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@ -12,7 +12,7 @@ DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \
gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
mac80211.xml
mac80211.xml debugobjects.xml
###
# The build process is as follows (targets):

391
Documentation/DocBook/debugobjects.tmpl Normal file
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@ -0,0 +1,391 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
<book id="debug-objects-guide">
<bookinfo>
<title>Debug objects life time</title>
<authorgroup>
<author>
<firstname>Thomas</firstname>
<surname>Gleixner</surname>
<affiliation>
<address>
<email>tglx@linutronix.de</email>
</address>
</affiliation>
</author>
</authorgroup>
<copyright>
<year>2008</year>
<holder>Thomas Gleixner</holder>
</copyright>
<legalnotice>
<para>
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License version 2 as published by the Free Software Foundation.
</para>
<para>
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
</para>
<para>
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
</para>
<para>
For more details see the file COPYING in the source
distribution of Linux.
</para>
</legalnotice>
</bookinfo>
<toc></toc>
<chapter id="intro">
<title>Introduction</title>
<para>
debugobjects is a generic infrastructure to track the life time
of kernel objects and validate the operations on those.
</para>
<para>
debugobjects is useful to check for the following error patterns:
<itemizedlist>
<listitem><para>Activation of uninitialized objects</para></listitem>
<listitem><para>Initialization of active objects</para></listitem>
<listitem><para>Usage of freed/destroyed objects</para></listitem>
</itemizedlist>
</para>
<para>
debugobjects is not changing the data structure of the real
object so it can be compiled in with a minimal runtime impact
and enabled on demand with a kernel command line option.
</para>
</chapter>
<chapter id="howto">
<title>Howto use debugobjects</title>
<para>
A kernel subsystem needs to provide a data structure which
describes the object type and add calls into the debug code at
appropriate places. The data structure to describe the object
type needs at minimum the name of the object type. Optional
functions can and should be provided to fixup detected problems
so the kernel can continue to work and the debug information can
be retrieved from a live system instead of hard core debugging
with serial consoles and stack trace transcripts from the
monitor.
</para>
<para>
The debug calls provided by debugobjects are:
<itemizedlist>
<listitem><para>debug_object_init</para></listitem>
<listitem><para>debug_object_init_on_stack</para></listitem>
<listitem><para>debug_object_activate</para></listitem>
<listitem><para>debug_object_deactivate</para></listitem>
<listitem><para>debug_object_destroy</para></listitem>
<listitem><para>debug_object_free</para></listitem>
</itemizedlist>
Each of these functions takes the address of the real object and
a pointer to the object type specific debug description
structure.
</para>
<para>
Each detected error is reported in the statistics and a limited
number of errors are printk'ed including a full stack trace.
</para>
<para>
The statistics are available via debugfs/debug_objects/stats.
They provide information about the number of warnings and the
number of successful fixups along with information about the
usage of the internal tracking objects and the state of the
internal tracking objects pool.
</para>
</chapter>
<chapter id="debugfunctions">
<title>Debug functions</title>
<sect1 id="prototypes">
<title>Debug object function reference</title>
!Elib/debugobjects.c
</sect1>
<sect1 id="debug_object_init">
<title>debug_object_init</title>
<para>
This function is called whenever the initialization function
of a real object is called.
</para>
<para>
When the real object is already tracked by debugobjects it is
checked, whether the object can be initialized. Initializing
is not allowed for active and destroyed objects. When
debugobjects detects an error, then it calls the fixup_init
function of the object type description structure if provided
by the caller. The fixup function can correct the problem
before the real initialization of the object happens. E.g. it
can deactivate an active object in order to prevent damage to
the subsystem.
</para>
<para>
When the real object is not yet tracked by debugobjects,
debugobjects allocates a tracker object for the real object
and sets the tracker object state to ODEBUG_STATE_INIT. It
verifies that the object is not on the callers stack. If it is
on the callers stack then a limited number of warnings
including a full stack trace is printk'ed. The calling code
must use debug_object_init_on_stack() and remove the object
before leaving the function which allocated it. See next
section.
</para>
</sect1>
<sect1 id="debug_object_init_on_stack">
<title>debug_object_init_on_stack</title>
<para>
This function is called whenever the initialization function
of a real object which resides on the stack is called.
</para>
<para>
When the real object is already tracked by debugobjects it is
checked, whether the object can be initialized. Initializing
is not allowed for active and destroyed objects. When
debugobjects detects an error, then it calls the fixup_init
function of the object type description structure if provided
by the caller. The fixup function can correct the problem
before the real initialization of the object happens. E.g. it
can deactivate an active object in order to prevent damage to
the subsystem.
</para>
<para>
When the real object is not yet tracked by debugobjects
debugobjects allocates a tracker object for the real object
and sets the tracker object state to ODEBUG_STATE_INIT. It
verifies that the object is on the callers stack.
</para>
<para>
An object which is on the stack must be removed from the
tracker by calling debug_object_free() before the function
which allocates the object returns. Otherwise we keep track of
stale objects.
</para>
</sect1>
<sect1 id="debug_object_activate">
<title>debug_object_activate</title>
<para>
This function is called whenever the activation function of a
real object is called.
</para>
<para>
When the real object is already tracked by debugobjects it is
checked, whether the object can be activated. Activating is
not allowed for active and destroyed objects. When
debugobjects detects an error, then it calls the
fixup_activate function of the object type description
structure if provided by the caller. The fixup function can
correct the problem before the real activation of the object
happens. E.g. it can deactivate an active object in order to
prevent damage to the subsystem.
</para>
<para>
When the real object is not yet tracked by debugobjects then
the fixup_activate function is called if available. This is
necessary to allow the legitimate activation of statically
allocated and initialized objects. The fixup function checks
whether the object is valid and calls the debug_objects_init()
function to initialize the tracking of this object.
</para>
<para>
When the activation is legitimate, then the state of the
associated tracker object is set to ODEBUG_STATE_ACTIVE.
</para>
</sect1>
<sect1 id="debug_object_deactivate">
<title>debug_object_deactivate</title>
<para>
This function is called whenever the deactivation function of
a real object is called.
</para>
<para>
When the real object is tracked by debugobjects it is checked,
whether the object can be deactivated. Deactivating is not
allowed for untracked or destroyed objects.
</para>
<para>
When the deactivation is legitimate, then the state of the
associated tracker object is set to ODEBUG_STATE_INACTIVE.
</para>
</sect1>
<sect1 id="debug_object_destroy">
<title>debug_object_destroy</title>
<para>
This function is called to mark an object destroyed. This is
useful to prevent the usage of invalid objects, which are
still available in memory: either statically allocated objects
or objects which are freed later.
</para>
<para>
When the real object is tracked by debugobjects it is checked,
whether the object can be destroyed. Destruction is not
allowed for active and destroyed objects. When debugobjects
detects an error, then it calls the fixup_destroy function of
the object type description structure if provided by the
caller. The fixup function can correct the problem before the
real destruction of the object happens. E.g. it can deactivate
an active object in order to prevent damage to the subsystem.
</para>
<para>
When the destruction is legitimate, then the state of the
associated tracker object is set to ODEBUG_STATE_DESTROYED.
</para>
</sect1>
<sect1 id="debug_object_free">
<title>debug_object_free</title>
<para>
This function is called before an object is freed.
</para>
<para>
When the real object is tracked by debugobjects it is checked,
whether the object can be freed. Free is not allowed for
active objects. When debugobjects detects an error, then it
calls the fixup_free function of the object type description
structure if provided by the caller. The fixup function can
correct the problem before the real free of the object
happens. E.g. it can deactivate an active object in order to
prevent damage to the subsystem.
</para>
<para>
Note that debug_object_free removes the object from the
tracker. Later usage of the object is detected by the other
debug checks.
</para>
</sect1>
</chapter>
<chapter id="fixupfunctions">
<title>Fixup functions</title>
<sect1 id="debug_obj_descr">
<title>Debug object type description structure</title>
!Iinclude/linux/debugobjects.h
</sect1>
<sect1 id="fixup_init">
<title>fixup_init</title>
<para>
This function is called from the debug code whenever a problem
in debug_object_init is detected. The function takes the
address of the object and the state which is currently
recorded in the tracker.
</para>
<para>
Called from debug_object_init when the object state is:
<itemizedlist>
<listitem><para>ODEBUG_STATE_ACTIVE</para></listitem>
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
statistics.
</para>
<para>
Note, that the function needs to call the debug_object_init()
function again, after the damage has been repaired in order to
keep the state consistent.
</para>
</sect1>
<sect1 id="fixup_activate">
<title>fixup_activate</title>
<para>
This function is called from the debug code whenever a problem
in debug_object_activate is detected.
</para>
<para>
Called from debug_object_activate when the object state is:
<itemizedlist>
<listitem><para>ODEBUG_STATE_NOTAVAILABLE</para></listitem>
<listitem><para>ODEBUG_STATE_ACTIVE</para></listitem>
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
statistics.
</para>
<para>
Note that the function needs to call the debug_object_activate()
function again after the damage has been repaired in order to
keep the state consistent.
</para>
<para>
The activation of statically initialized objects is a special
case. When debug_object_activate() has no tracked object for
this object address then fixup_activate() is called with
object state ODEBUG_STATE_NOTAVAILABLE. The fixup function
needs to check whether this is a legitimate case of a
statically initialized object or not. In case it is it calls
debug_object_init() and debug_object_activate() to make the
object known to the tracker and marked active. In this case
the function should return 0 because this is not a real fixup.
</para>
</sect1>
<sect1 id="fixup_destroy">
<title>fixup_destroy</title>
<para>
This function is called from the debug code whenever a problem
in debug_object_destroy is detected.
</para>
<para>
Called from debug_object_destroy when the object state is:
<itemizedlist>
<listitem><para>ODEBUG_STATE_ACTIVE</para></listitem>
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
statistics.
</para>
</sect1>
<sect1 id="fixup_free">
<title>fixup_free</title>
<para>
This function is called from the debug code whenever a problem
in debug_object_free is detected. Further it can be called
from the debug checks in kfree/vfree, when an active object is
detected from the debug_check_no_obj_freed() sanity checks.
</para>
<para>
Called from debug_object_free() or debug_check_no_obj_freed()
when the object state is:
<itemizedlist>
<listitem><para>ODEBUG_STATE_ACTIVE</para></listitem>
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
statistics.
</para>
</sect1>
</chapter>
<chapter id="bugs">
<title>Known Bugs And Assumptions</title>
<para>
None (knock on wood).
</para>
</chapter>
</book>

8
Documentation/DocBook/kgdb.tmpl
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@ -72,7 +72,7 @@
kgdb is a source level debugger for linux kernel. It is used along
with gdb to debug a linux kernel. The expectation is that gdb can
be used to "break in" to the kernel to inspect memory, variables
and look through a cal stack information similar to what an
and look through call stack information similar to what an
application developer would use gdb for. It is possible to place
breakpoints in kernel code and perform some limited execution
stepping.
@ -93,8 +93,10 @@
<chapter id="CompilingAKernel">
<title>Compiling a kernel</title>
<para>
To enable <symbol>CONFIG_KGDB</symbol>, look under the "Kernel debugging"
and then select "KGDB: kernel debugging with remote gdb".
To enable <symbol>CONFIG_KGDB</symbol> you should first turn on
"Prompt for development and/or incomplete code/drivers"
(CONFIG_EXPERIMENTAL) in "General setup", then under the
"Kernel debugging" select "KGDB: kernel debugging with remote gdb".
</para>
<para>
Next you should choose one of more I/O drivers to interconnect debugging

1
Documentation/DocBook/rapidio.tmpl
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@ -133,7 +133,6 @@
!Idrivers/rapidio/rio-sysfs.c
</sect1>
<sect1 id="PPC32_support"><title>PPC32 support</title>
!Iarch/powerpc/kernel/rio.c
!Earch/powerpc/sysdev/fsl_rio.c
!Iarch/powerpc/sysdev/fsl_rio.c
</sect1>

34
Documentation/braille-console.txt Normal file
View File

@ -0,0 +1,34 @@
Linux Braille Console
To get early boot messages on a braille device (before userspace screen
readers can start), you first need to compile the support for the usual serial
console (see serial-console.txt), and for braille device (in Device Drivers -
Accessibility).
Then you need to specify a console=brl, option on the kernel command line, the
format is:
console=brl,serial_options...
where serial_options... are the same as described in serial-console.txt
So for instance you can use console=brl,ttyS0 if the braille device is connected
to the first serial port, and console=brl,ttyS0,115200 to override the baud rate
to 115200, etc.
By default, the braille device will just show the last kernel message (console
mode). To review previous messages, press the Insert key to switch to the VT
review mode. In review mode, the arrow keys permit to browse in the VT content,
page up/down keys go at the top/bottom of the screen, and the home key goes back
to the cursor, hence providing very basic screen reviewing facility.
Sound feedback can be obtained by adding the braille_console.sound=1 kernel
parameter.
For simplicity, only one braille console can be enabled, other uses of
console=brl,... will be discarded. Also note that it does not interfere with
the console selection mecanism described in serial-console.txt
For now, only the VisioBraille device is supported.
Samuel Thibault <samuel.thibault@ens-lyon.org>

3
Documentation/cgroups.txt
View File

@ -500,8 +500,7 @@ post-attachment activity that requires memory allocations or blocking.
void fork(struct cgroup_subsy *ss, struct task_struct *task)
Called when a task is forked into a cgroup. Also called during
registration for all existing tasks.
Called when a task is forked into a cgroup.
void exit(struct cgroup_subsys *ss, struct task_struct *task)

48
Documentation/controllers/devices.txt Normal file
View File

@ -0,0 +1,48 @@
Device Whitelist Controller
1. Description:
Implement a cgroup to track and enforce open and mknod restrictions
on device files. A device cgroup associates a device access
whitelist with each cgroup. A whitelist entry has 4 fields.
'type' is a (all), c (char), or b (block). 'all' means it applies
to all types and all major and minor numbers. Major and minor are
either an integer or * for all. Access is a composition of r
(read), w (write), and m (mknod).
The root device cgroup starts with rwm to 'all'. A child device
cgroup gets a copy of the parent. Administrators can then remove
devices from the whitelist or add new entries. A child cgroup can
never receive a device access which is denied its parent. However
when a device access is removed from a parent it will not also be
removed from the child(ren).
2. User Interface
An entry is added using devices.allow, and removed using
devices.deny. For instance
echo 'c 1:3 mr' > /cgroups/1/devices.allow
allows cgroup 1 to read and mknod the device usually known as
/dev/null. Doing
echo a > /cgroups/1/devices.deny
will remove the default 'a *:* mrw' entry.
3. Security
Any task can move itself between cgroups. This clearly won't
suffice, but we can decide the best way to adequately restrict
movement as people get some experience with this. We may just want
to require CAP_SYS_ADMIN, which at least is a separate bit from
CAP_MKNOD. We may want to just refuse moving to a cgroup which
isn't a descendent of the current one. Or we may want to use
CAP_MAC_ADMIN, since we really are trying to lock down root.
CAP_SYS_ADMIN is needed to modify the whitelist or move another
task to a new cgroup. (Again we'll probably want to change that).
A cgroup may not be granted more permissions than the cgroup's
parent has.

181
Documentation/controllers/resource_counter.txt Normal file
View File

@ -0,0 +1,181 @@
The Resource Counter
The resource counter, declared at include/linux/res_counter.h,
is supposed to facilitate the resource management by controllers
by providing common stuff for accounting.
This "stuff" includes the res_counter structure and routines
to work with it.
1. Crucial parts of the res_counter structure
a. unsigned long long usage
The usage value shows the amount of a resource that is consumed
by a group at a given time. The units of measurement should be
determined by the controller that uses this counter. E.g. it can
be bytes, items or any other unit the controller operates on.
b. unsigned long long max_usage
The maximal value of the usage over time.
This value is useful when gathering statistical information about
the particular group, as it shows the actual resource requirements
for a particular group, not just some usage snapshot.
c. unsigned long long limit
The maximal allowed amount of resource to consume by the group. In
case the group requests for more resources, so that the usage value
would exceed the limit, the resource allocation is rejected (see
the next section).
d. unsigned long long failcnt
The failcnt stands for "failures counter". This is the number of
resource allocation attempts that failed.
c. spinlock_t lock
Protects changes of the above values.
2. Basic accounting routines
a. void res_counter_init(struct res_counter *rc)
Initializes the resource counter. As usual, should be the first
routine called for a new counter.
b. int res_counter_charge[_locked]
(struct res_counter *rc, unsigned long val)
When a resource is about to be allocated it has to be accounted
with the appropriate resource counter (controller should determine
which one to use on its own). This operation is called "charging".
This is not very important which operation - resource allocation
or charging - is performed first, but
* if the allocation is performed first, this may create a
temporary resource over-usage by the time resource counter is
charged;
* if the charging is performed first, then it should be uncharged
on error path (if the one is called).
c. void res_counter_uncharge[_locked]
(struct res_counter *rc, unsigned long val)
When a resource is released (freed) it should be de-accounted
from the resource counter it was accounted to. This is called
"uncharging".
The _locked routines imply that the res_counter->lock is taken.
2.1 Other accounting routines
There are more routines that may help you with common needs, like
checking whether the limit is reached or resetting the max_usage
value. They are all declared in include/linux/res_counter.h.
3. Analyzing the resource counter registrations
a. If the failcnt value constantly grows, this means that the counter's
limit is too tight. Either the group is misbehaving and consumes too
many resources, or the configuration is not suitable for the group
and the limit should be increased.
b. The max_usage value can be used to quickly tune the group. One may
set the limits to maximal values and either load the container with
a common pattern or leave one for a while. After this the max_usage
value shows the amount of memory the container would require during
its common activity.
Setting the limit a bit above this value gives a pretty good
configuration that works in most of the cases.
c. If the max_usage is much less than the limit, but the failcnt value
is growing, then the group tries to allocate a big chunk of resource
at once.
d. If the max_usage is much less than the limit, but the failcnt value
is 0, then this group is given too high limit, that it does not
require. It is better to lower the limit a bit leaving more resource
for other groups.
4. Communication with the control groups subsystem (cgroups)
All the resource controllers that are using cgroups and resource counters
should provide files (in the cgroup filesystem) to work with the resource
counter fields. They are recommended to adhere to the following rules:
a. File names
Field name File name
---------------------------------------------------
usage usage_in_<unit_of_measurement>
max_usage max_usage_in_<unit_of_measurement>
limit limit_in_<unit_of_measurement>
failcnt failcnt
lock no file :)
b. Reading from file should show the corresponding field value in the
appropriate format.
c. Writing to file
Field Expected behavior
----------------------------------
usage prohibited
max_usage reset to usage
limit set the limit
failcnt reset to zero
5. Usage example
a. Declare a task group (take a look at cgroups subsystem for this) and
fold a res_counter into it
struct my_group {
struct res_counter res;
<other fields>
}
b. Put hooks in resource allocation/release paths
int alloc_something(...)
{
if (res_counter_charge(res_counter_ptr, amount) < 0)
return -ENOMEM;
<allocate the resource and return to the caller>
}
void release_something(...)
{
res_counter_uncharge(res_counter_ptr, amount);
<release the resource>
}
In order to keep the usage value self-consistent, both the
"res_counter_ptr" and the "amount" in release_something() should be
the same as they were in the alloc_something() when the releasing
resource was allocated.
c. Provide the way to read res_counter values and set them (the cgroups
still can help with it).
c. Compile and run :)

14
Documentation/cpu-freq/user-guide.txt
View File

@ -154,6 +154,11 @@ scaling_governor, and by "echoing" the name of another
that some governors won't load - they only
work on some specific architectures or
processors.
cpuinfo_cur_freq : Current speed of the CPU, in KHz.
scaling_available_frequencies : List of available frequencies, in KHz.
scaling_min_freq and
scaling_max_freq show the current "policy limits" (in
kHz). By echoing new values into these
@ -162,6 +167,15 @@ scaling_max_freq show the current "policy limits" (in
first set scaling_max_freq, then
scaling_min_freq.
affected_cpus : List of CPUs that require software coordination
of frequency.
related_cpus : List of CPUs that need some sort of frequency
coordination, whether software or hardware.
scaling_driver : Hardware driver for cpufreq.
scaling_cur_freq : Current frequency of the CPU, in KHz.
If you have selected the "userspace" governor which allows you to
set the CPU operating frequency to a specific value, you can read out

26
Documentation/cpusets.txt
View File

@ -171,6 +171,7 @@ files describing that cpuset:
- memory_migrate flag: if set, move pages to cpusets nodes
- cpu_exclusive flag: is cpu placement exclusive?
- mem_exclusive flag: is memory placement exclusive?
- mem_hardwall flag: is memory allocation hardwalled
- memory_pressure: measure of how much paging pressure in cpuset
In addition, the root cpuset only has the following file:
@ -222,17 +223,18 @@ If a cpuset is cpu or mem exclusive, no other cpuset, other than
a direct ancestor or descendent, may share any of the same CPUs or
Memory Nodes.
A cpuset that is mem_exclusive restricts kernel allocations for
page, buffer and other data commonly shared by the kernel across
multiple users. All cpusets, whether mem_exclusive or not, restrict
allocations of memory for user space. This enables configuring a
system so that several independent jobs can share common kernel data,
such as file system pages, while isolating each jobs user allocation in
its own cpuset. To do this, construct a large mem_exclusive cpuset to
hold all the jobs, and construct child, non-mem_exclusive cpusets for
each individual job. Only a small amount of typical kernel memory,
such as requests from interrupt handlers, is allowed to be taken
outside even a mem_exclusive cpuset.
A cpuset that is mem_exclusive *or* mem_hardwall is "hardwalled",
i.e. it restricts kernel allocations for page, buffer and other data
commonly shared by the kernel across multiple users. All cpusets,
whether hardwalled or not, restrict allocations of memory for user
space. This enables configuring a system so that several independent
jobs can share common kernel data, such as file system pages, while
isolating each job's user allocation in its own cpuset. To do this,
construct a large mem_exclusive cpuset to hold all the jobs, and
construct child, non-mem_exclusive cpusets for each individual job.
Only a small amount of typical kernel memory, such as requests from
interrupt handlers, is allowed to be taken outside even a
mem_exclusive cpuset.
1.5 What is memory_pressure ?
@ -707,7 +709,7 @@ Now you want to do something with this cpuset.
In this directory you can find several files:
# ls
cpus cpu_exclusive mems mem_exclusive tasks
cpus cpu_exclusive mems mem_exclusive mem_hardwall tasks
Reading them will give you information about the state of this cpuset:
the CPUs and Memory Nodes it can use, the processes that are using

2
Documentation/dontdiff
View File

@ -141,6 +141,7 @@ mkprep
mktables
mktree
modpost
modules.order
modversions.h*
offset.h
offsets.h
@ -171,6 +172,7 @@ sm_tbl*
split-include
tags
tftpboot.img
timeconst.h
times.h*
tkparse
trix_boot.h

18
Documentation/feature-removal-schedule.txt
View File

@ -138,6 +138,24 @@ Who: Kay Sievers <kay.sievers@suse.de>
---------------------------
What: find_task_by_pid
When: 2.6.26
Why: With pid namespaces, calling this funciton will return the
wrong task when called from inside a namespace.
The best way to save a task pid and find a task by this
pid later, is to find this task's struct pid pointer (or get
it directly from the task) and call pid_task() later.
If someone really needs to get a task by its pid_t, then
he most likely needs the find_task_by_vpid() to get the
task from the same namespace as the current task is in, but
this may be not so in general.
Who: Pavel Emelyanov <xemul@openvz.org>
---------------------------
What: ACPI procfs interface
When: July 2008
Why: ACPI sysfs conversion should be finished by January 2008.

21
Documentation/filesystems/proc.txt
View File

@ -463,11 +463,17 @@ SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 968 kB
Writeback: 0 kB
AnonPages: 861800 kB
Mapped: 280372 kB
Slab: 684068 kB
Slab: 284364 kB
SReclaimable: 159856 kB
SUnreclaim: 124508 kB
PageTables: 24448 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 7669796 kB
Committed_AS: 100056 kB
PageTables: 24448 kB
VmallocTotal: 112216 kB
VmallocUsed: 428 kB
VmallocChunk: 111088 kB
@ -503,8 +509,17 @@ VmallocChunk: 111088 kB
on the disk
Dirty: Memory which is waiting to get written back to the disk
Writeback: Memory which is actively being written back to the disk
AnonPages: Non-file backed pages mapped into userspace page tables
Mapped: files which have been mmaped, such as libraries
Slab: in-kernel data structures cache
SReclaimable: Part of Slab, that might be reclaimed, such as caches
SUnreclaim: Part of Slab, that cannot be reclaimed on memory pressure
PageTables: amount of memory dedicated to the lowest level of page
tables.
NFS_Unstable: NFS pages sent to the server, but not yet committed to stable
storage
Bounce: Memory used for block device "bounce buffers"
WritebackTmp: Memory used by FUSE for temporary writeback buffers
CommitLimit: Based on the overcommit ratio ('vm.overcommit_ratio'),
this is the total amount of memory currently available to
be allocated on the system. This limit is only adhered to
@ -531,8 +546,6 @@ Committed_AS: The amount of memory presently allocated on the system.
above) will not be permitted. This is useful if one needs
to guarantee that processes will not fail due to lack of
memory once that memory has been successfully allocated.
PageTables: amount of memory dedicated to the lowest level of page
tables.
VmallocTotal: total size of vmalloc memory area
VmallocUsed: amount of vmalloc area which is used
VmallocChunk: largest contigious block of vmalloc area which is free

3
Documentation/hwmon/w83l785ts
View File

@ -33,7 +33,8 @@ Known Issues
------------
On some systems (Asus), the BIOS is known to interfere with the driver
and cause read errors. The driver will retry a given number of times
and cause read errors. Or maybe the W83L785TS-S chip is simply unreliable,
we don't really know. The driver will retry a given number of times
(5 by default) and then give up, returning the old value (or 0 if
there is no old value). It seems to work well enough so that you should
not notice anything. Thanks to James Bolt for helping test this feature.

3
Documentation/i2c/writing-clients
View File

@ -164,7 +164,8 @@ I2C device drivers using this binding model work just like any other
kind of driver in Linux: they provide a probe() method to bind to
those devices, and a remove() method to unbind.
static int foo_probe(struct i2c_client *client);
static int foo_probe(struct i2c_client *client,
const struct i2c_device_id *id);
static int foo_remove(struct i2c_client *client);
Remember that the i2c_driver does not create those client handles. The

12
Documentation/i386/boot.txt
View File

@ -40,9 +40,17 @@ Protocol 2.05: (Kernel 2.6.20) Make protected mode kernel relocatable.
Introduce relocatable_kernel and kernel_alignment fields.
Protocol 2.06: (Kernel 2.6.22) Added a field that contains the size of
the boot command line
the boot command line.
Protocol 2.09: (kernel 2.6.26) Added a field of 64-bit physical
Protocol 2.07: (Kernel 2.6.24) Added paravirtualised boot protocol.
Introduced hardware_subarch and hardware_subarch_data
and KEEP_SEGMENTS flag in load_flags.
Protocol 2.08: (Kernel 2.6.26) Added crc32 checksum and ELF format
payload. Introduced payload_offset and payload length
fields to aid in locating the payload.
Protocol 2.09: (Kernel 2.6.26) Added a field of 64-bit physical
pointer to single linked list of struct setup_data.
**** MEMORY LAYOUT

41
Documentation/kbuild/kconfig-language.txt
View File

@ -104,14 +104,15 @@ applicable everywhere (see syntax).
Reverse dependencies can only be used with boolean or tristate
symbols.
Note:
select is evil.... select will by brute force set a symbol
equal to 'y' without visiting the dependencies. So abusing
select you are able to select a symbol FOO even if FOO depends
on BAR that is not set. In general use select only for
non-visible symbols (no prompts anywhere) and for symbols with
no dependencies. That will limit the usefulness but on the
other hand avoid the illegal configurations all over. kconfig
should one day warn about such things.
select should be used with care. select will force
a symbol to a value without visiting the dependencies.
By abusing select you are able to select a symbol FOO even
if FOO depends on BAR that is not set.
In general use select only for non-visible symbols
(no prompts anywhere) and for symbols with no dependencies.
That will limit the usefulness but on the other hand avoid
the illegal configurations all over.
kconfig should one day warn about such things.
- numerical ranges: "range" <symbol> <symbol> ["if" <expr>]
This allows to limit the range of possible input values for int
@ -376,27 +377,3 @@ config FOO
limits FOO to module (=m) or disabled (=n).
Build limited by a third config symbol which may be =y or =m
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A common idiom that we see (and sometimes have problems with) is this:
When option C in B (module or subsystem) uses interfaces from A (module
or subsystem), and both A and B are tristate (could be =y or =m if they
were independent of each other, but they aren't), then we need to limit
C such that it cannot be built statically if A is built as a loadable
module. (C already depends on B, so there is no dependency issue to
take care of here.)
If A is linked statically into the kernel image, C can be built
statically or as loadable module(s). However, if A is built as loadable
module(s), then C must be restricted to loadable module(s) also. This
can be expressed in kconfig language as:
config C
depends on A = y || A = B
or for real examples, use this command in a kernel tree:
$ find . -name Kconfig\* | xargs grep -ns "depends on.*=.*||.*=" | grep -v orig

5
Documentation/kdump/kdump.txt
View File

@ -245,6 +245,8 @@ The syntax is:
crashkernel=<range1>:<size1>[,<range2>:<size2>,...][@offset]
range=start-[end]
'start' is inclusive and 'end' is exclusive.
For example:
crashkernel=512M-2G:64M,2G-:128M
@ -253,10 +255,11 @@ This would mean:
1) if the RAM is smaller than 512M, then don't reserve anything
(this is the "rescue" case)
2) if the RAM size is between 512M and 2G, then reserve 64M
2) if the RAM size is between 512M and 2G (exclusive), then reserve 64M
3) if the RAM size is larger than 2G, then reserve 128M
Boot into System Kernel
=======================

22
Documentation/kernel-parameters.txt
View File

@ -496,6 +496,11 @@ and is between 256 and 4096 characters. It is defined in the file
switching to the matching ttyS device later. The
options are the same as for ttyS, above.
If the device connected to the port is not a TTY but a braille
device, prepend "brl," before the device type, for instance
console=brl,ttyS0
For now, only VisioBraille is supported.
earlycon= [KNL] Output early console device and options.
uart[8250],io,<addr>[,options]
uart[8250],mmio,<addr>[,options]
@ -556,6 +561,8 @@ and is between 256 and 4096 characters. It is defined in the file
1 will print _a lot_ more information - normally
only useful to kernel developers.
debug_objects [KNL] Enable object debugging
decnet.addr= [HW,NET]
Format: <area>[,<node>]
See also Documentation/networking/decnet.txt.
@ -627,8 +634,7 @@ and is between 256 and 4096 characters. It is defined in the file
eata= [HW,SCSI]
edd= [EDD]
Format: {"of[f]" | "sk[ipmbr]"}
See comment in arch/i386/boot/edd.S
Format: {"off" | "on" | "skip[mbr]"}
eisa_irq_edge= [PARISC,HW]
See header of drivers/parisc/eisa.c.
@ -1088,9 +1094,6 @@ and is between 256 and 4096 characters. It is defined in the file
mac5380= [HW,SCSI] Format:
<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
mac53c9x= [HW,SCSI] Format:
<num_esps>,<disconnect>,<nosync>,<can_queue>,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>
machvec= [IA64] Force the use of a particular machine-vector
(machvec) in a generic kernel.
Example: machvec=hpzx1_swiotlb
@ -1389,6 +1392,13 @@ and is between 256 and 4096 characters. It is defined in the file
nr_uarts= [SERIAL] maximum number of UARTs to be registered.
olpc_ec_timeout= [OLPC] ms delay when issuing EC commands
Rather than timing out after 20 ms if an EC
command is not properly ACKed, override the length
of the timeout. We have interrupts disabled while
waiting for the ACK, so if this is set too high
interrupts *may* be lost!
opl3= [HW,OSS]
Format: <io>
@ -1512,6 +1522,8 @@ and is between 256 and 4096 characters. It is defined in the file
This is normally done in pci_enable_device(),
so this option is a temporary workaround
for broken drivers that don't call it.
skip_isa_align [X86] do not align io start addr, so can
handle more pci cards
firmware [ARM] Do not re-enumerate the bus but instead
just use the configuration from the
bootloader. This is currently used on

11
Documentation/keys-request-key.txt
View File

@ -11,26 +11,29 @@ request_key*():
struct key *request_key(const struct key_type *type,
const char *description,
const char *callout_string);
const char *callout_info);
or:
struct key *request_key_with_auxdata(const struct key_type *type,
const char *description,
const char *callout_string,
const char *callout_info,
size_t callout_len,
void *aux);
or:
struct key *request_key_async(const struct key_type *type,
const char *description,
const char *callout_string);
const char *callout_info,
size_t callout_len);
or:
struct key *request_key_async_with_auxdata(const struct key_type *type,
const char *description,
const char *callout_string,
const char *callout_info,
size_t callout_len,
void *aux);
Or by userspace invoking the request_key system call:

59
Documentation/keys.txt
View File

@ -170,7 +170,8 @@ The key service provides a number of features besides keys:
amount of description and payload space that can be consumed.
The user can view information on this and other statistics through procfs
files.
files. The root user may also alter the quota limits through sysctl files
(see the section "New procfs files").
Process-specific and thread-specific keyrings are not counted towards a
user's quota.
@ -329,6 +330,27 @@ about the status of the key service:
<bytes>/<max> Key size quota
Four new sysctl files have been added also for the purpose of controlling the
quota limits on keys:
(*) /proc/sys/kernel/keys/root_maxkeys
/proc/sys/kernel/keys/root_maxbytes
These files hold the maximum number of keys that root may have and the
maximum total number of bytes of data that root may have stored in those
keys.
(*) /proc/sys/kernel/keys/maxkeys
/proc/sys/kernel/keys/maxbytes
These files hold the maximum number of keys that each non-root user may
have and the maximum total number of bytes of data that each of those
users may have stored in their keys.
Root may alter these by writing each new limit as a decimal number string to
the appropriate file.
===============================
USERSPACE SYSTEM CALL INTERFACE
===============================
@ -711,6 +733,27 @@ The keyctl syscall functions are:
The assumed authoritative key is inherited across fork and exec.
(*) Get the LSM security context attached to a key.
long keyctl(KEYCTL_GET_SECURITY, key_serial_t key, char *buffer,
size_t buflen)
This function returns a string that represents the LSM security context
attached to a key in the buffer provided.
Unless there's an error, it always returns the amount of data it could
produce, even if that's too big for the buffer, but it won't copy more
than requested to userspace. If the buffer pointer is NULL then no copy
will take place.
A NUL character is included at the end of the string if the buffer is
sufficiently big. This is included in the returned count. If no LSM is
in force then an empty string will be returned.
A process must have view permission on the key for this function to be
successful.
===============
KERNEL SERVICES
===============
@ -771,7 +814,7 @@ payload contents" for more information.
struct key *request_key(const struct key_type *type,
const char *description,
const char *callout_string);
const char *callout_info);
This is used to request a key or keyring with a description that matches
the description specified according to the key type's match function. This
@ -793,24 +836,28 @@ payload contents" for more information.
struct key *request_key_with_auxdata(const struct key_type *type,
const char *description,
const char *callout_string,
const void *callout_info,
size_t callout_len,
void *aux);
This is identical to request_key(), except that the auxiliary data is
passed to the key_type->request_key() op if it exists.
passed to the key_type->request_key() op if it exists, and the callout_info
is a blob of length callout_len, if given (the length may be 0).
(*) A key can be requested asynchronously by calling one of:
struct key *request_key_async(const struct key_type *type,
const char *description,
const char *callout_string);
const void *callout_info,
size_t callout_len);
or:
struct key *request_key_async_with_auxdata(const struct key_type *type,
const char *description,
const char *callout_string,
const char *callout_info,
size_t callout_len,
void *aux);
which are asynchronous equivalents of request_key() and

139
Documentation/laptops/thinkpad-acpi.txt
View File

@ -1,7 +1,7 @@
ThinkPad ACPI Extras Driver
Version 0.19
January 06th, 2008
Version 0.20
April 09th, 2008
Borislav Deianov <borislav@users.sf.net>
Henrique de Moraes Holschuh <hmh@hmh.eng.br>
@ -18,6 +18,11 @@ This driver used to be named ibm-acpi until kernel 2.6.21 and release
moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
2.6.22, and release 0.14.
The driver is named "thinkpad-acpi". In some places, like module
names, "thinkpad_acpi" is used because of userspace issues.
"tpacpi" is used as a shorthand where "thinkpad-acpi" would be too
long due to length limitations on some Linux kernel versions.
Status
------
@ -571,6 +576,47 @@ netlink interface and the input layer interface, and don't bother at all
with hotkey_report_mode.
Brightness hotkey notes:
These are the current sane choices for brightness key mapping in
thinkpad-acpi:
For IBM and Lenovo models *without* ACPI backlight control (the ones on
which thinkpad-acpi will autoload its backlight interface by default,
and on which ACPI video does not export a backlight interface):
1. Don't enable or map the brightness hotkeys in thinkpad-acpi, as
these older firmware versions unfortunately won't respect the hotkey
mask for brightness keys anyway, and always reacts to them. This
usually work fine, unless X.org drivers are doing something to block
the BIOS. In that case, use (3) below. This is the default mode of
operation.
2. Enable the hotkeys, but map them to something else that is NOT
KEY_BRIGHTNESS_UP/DOWN or any other keycode that would cause
userspace to try to change the backlight level, and use that as an
on-screen-display hint.
3. IF AND ONLY IF X.org drivers find a way to block the firmware from
automatically changing the brightness, enable the hotkeys and map
them to KEY_BRIGHTNESS_UP and KEY_BRIGHTNESS_DOWN, and feed that to
something that calls xbacklight. thinkpad-acpi will not be able to
change brightness in that case either, so you should disable its
backlight interface.
For Lenovo models *with* ACPI backlight control:
1. Load up ACPI video and use that. ACPI video will report ACPI
events for brightness change keys. Do not mess with thinkpad-acpi
defaults in this case. thinkpad-acpi should not have anything to do
with backlight events in a scenario where ACPI video is loaded:
brightness hotkeys must be disabled, and the backlight interface is
to be kept disabled as well. This is the default mode of operation.
2. Do *NOT* load up ACPI video, enable the hotkeys in thinkpad-acpi,
and map them to KEY_BRIGHTNESS_UP and KEY_BRIGHTNESS_DOWN. Process
these keys on userspace somehow (e.g. by calling xbacklight).
Bluetooth
---------
@ -647,16 +693,31 @@ while others are still having problems. For more information:
https://bugs.freedesktop.org/show_bug.cgi?id=2000
ThinkLight control -- /proc/acpi/ibm/light
------------------------------------------
ThinkLight control
------------------
The current status of the ThinkLight can be found in this file. A few
models which do not make the status available will show it as
"unknown". The available commands are:
procfs: /proc/acpi/ibm/light
sysfs attributes: as per LED class, for the "tpacpi::thinklight" LED
procfs notes:
The ThinkLight status can be read and set through the procfs interface. A
few models which do not make the status available will show the ThinkLight
status as "unknown". The available commands are:
echo on > /proc/acpi/ibm/light
echo off > /proc/acpi/ibm/light
sysfs notes:
The ThinkLight sysfs interface is documented by the LED class
documentation, in Documentation/leds-class.txt. The ThinkLight LED name
is "tpacpi::thinklight".
Due to limitations in the sysfs LED class, if the status of the thinklight
cannot be read or if it is unknown, thinkpad-acpi will report it as "off".
It is impossible to know if the status returned through sysfs is valid.
Docking / undocking -- /proc/acpi/ibm/dock
------------------------------------------
@ -815,28 +876,63 @@ The cmos command interface is prone to firmware split-brain problems, as
in newer ThinkPads it is just a compatibility layer. Do not use it, it is
exported just as a debug tool.
LED control -- /proc/acpi/ibm/led
---------------------------------
LED control
-----------
Some of the LED indicators can be controlled through this feature. The
available commands are:
procfs: /proc/acpi/ibm/led
sysfs attributes: as per LED class, see below for names
echo '<led number> on' >/proc/acpi/ibm/led
echo '<led number> off' >/proc/acpi/ibm/led
echo '<led number> blink' >/proc/acpi/ibm/led
Some of the LED indicators can be controlled through this feature. On
some older ThinkPad models, it is possible to query the status of the
LED indicators as well. Newer ThinkPads cannot query the real status
of the LED indicators.
The <led number> range is 0 to 7. The set of LEDs that can be
controlled varies from model to model. Here is the mapping on the X40:
procfs notes:
The available commands are:
echo '<LED number> on' >/proc/acpi/ibm/led
echo '<LED number> off' >/proc/acpi/ibm/led
echo '<LED number> blink' >/proc/acpi/ibm/led
The <LED number> range is 0 to 7. The set of LEDs that can be
controlled varies from model to model. Here is the common ThinkPad
mapping:
0 - power
1 - battery (orange)
2 - battery (green)
3 - UltraBase
3 - UltraBase/dock
4 - UltraBay
5 - UltraBase battery slot
6 - (unknown)
7 - standby
All of the above can be turned on and off and can be made to blink.
sysfs notes:
The ThinkPad LED sysfs interface is described in detail by the LED class
documentation, in Documentation/leds-class.txt.
The leds are named (in LED ID order, from 0 to 7):
"tpacpi::power", "tpacpi:orange:batt", "tpacpi:green:batt",
"tpacpi::dock_active", "tpacpi::bay_active", "tpacpi::dock_batt",
"tpacpi::unknown_led", "tpacpi::standby".
Due to limitations in the sysfs LED class, if the status of the LED
indicators cannot be read due to an error, thinkpad-acpi will report it as
a brightness of zero (same as LED off).
If the thinkpad firmware doesn't support reading the current status,
trying to read the current LED brightness will just return whatever
brightness was last written to that attribute.
These LEDs can blink using hardware acceleration. To request that a
ThinkPad indicator LED should blink in hardware accelerated mode, use the
"timer" trigger, and leave the delay_on and delay_off parameters set to
zero (to request hardware acceleration autodetection).
ACPI sounds -- /proc/acpi/ibm/beep
----------------------------------
@ -1090,6 +1186,15 @@ it there will be the following attributes:
dim the display.
WARNING:
Whatever you do, do NOT ever call thinkpad-acpi backlight-level change
interface and the ACPI-based backlight level change interface
(available on newer BIOSes, and driven by the Linux ACPI video driver)
at the same time. The two will interact in bad ways, do funny things,
and maybe reduce the life of the backlight lamps by needlessly kicking
its level up and down at every change.
Volume control -- /proc/acpi/ibm/volume
---------------------------------------

62
Documentation/lguest/lguest.c
View File

@ -131,6 +131,9 @@ struct device
/* Any queues attached to this device */
struct virtqueue *vq;
/* Handle status being finalized (ie. feature bits stable). */
void (*ready)(struct device *me);
/* Device-specific data. */
void *priv;
};
@ -925,24 +928,40 @@ static void enable_fd(int fd, struct virtqueue *vq)
write(waker_fd, &vq->dev->fd, sizeof(vq->dev->fd));
}
/* When the Guest asks us to reset a device, it's is fairly easy. */
static void reset_device(struct device *dev)
/* When the Guest tells us they updated the status field, we handle it. */
static void update_device_status(struct device *dev)
{
struct virtqueue *vq;
verbose("Resetting device %s\n", dev->name);
/* Clear the status. */
dev->desc->status = 0;
/* This is a reset. */
if (dev->desc->status == 0) {
verbose("Resetting device %s\n", dev->name);
/* Clear any features they've acked. */
memset(get_feature_bits(dev) + dev->desc->feature_len, 0,
dev->desc->feature_len);
/* Clear any features they've acked. */
memset(get_feature_bits(dev) + dev->desc->feature_len, 0,
dev->desc->feature_len);
/* Zero out the virtqueues. */
for (vq = dev->vq; vq; vq = vq->next) {
memset(vq->vring.desc, 0,
vring_size(vq->config.num, getpagesize()));
vq->last_avail_idx = 0;
/* Zero out the virtqueues. */
for (vq = dev->vq; vq; vq = vq->next) {
memset(vq->vring.desc, 0,
vring_size(vq->config.num, getpagesize()));
vq->last_avail_idx = 0;
}
} else if (dev->desc->status & VIRTIO_CONFIG_S_FAILED) {
warnx("Device %s configuration FAILED", dev->name);
} else if (dev->desc->status & VIRTIO_CONFIG_S_DRIVER_OK) {
unsigned int i;
verbose("Device %s OK: offered", dev->name);
for (i = 0; i < dev->desc->feature_len; i++)
verbose(" %08x", get_feature_bits(dev)[i]);
verbose(", accepted");
for (i = 0; i < dev->desc->feature_len; i++)
verbose(" %08x", get_feature_bits(dev)
[dev->desc->feature_len+i]);
if (dev->ready)
dev->ready(dev);
}
}
@ -954,9 +973,9 @@ static void handle_output(int fd, unsigned long addr)
/* Check each device and virtqueue. */
for (i = devices.dev; i; i = i->next) {
/* Notifications to device descriptors reset the device. */
/* Notifications to device descriptors update device status. */
if (from_guest_phys(addr) == i->desc) {
reset_device(i);
update_device_status(i);
return;
}
@ -1170,6 +1189,7 @@ static struct device *new_device(const char *name, u16 type, int fd,
dev->handle_input = handle_input;
dev->name = name;
dev->vq = NULL;
dev->ready = NULL;
/* Append to device list. Prepending to a single-linked list is
* easier, but the user expects the devices to be arranged on the bus
@ -1398,7 +1418,7 @@ static bool service_io(struct device *dev)
struct vblk_info *vblk = dev->priv;
unsigned int head, out_num, in_num, wlen;
int ret;
struct virtio_blk_inhdr *in;
u8 *in;
struct virtio_blk_outhdr *out;
struct iovec iov[dev->vq->vring.num];
off64_t off;
@ -1416,7 +1436,7 @@ static bool service_io(struct device *dev)
head, out_num, in_num);
out = convert(&iov[0], struct virtio_blk_outhdr);
in = convert(&iov[out_num+in_num-1], struct virtio_blk_inhdr);
in = convert(&iov[out_num+in_num-1], u8);
off = out->sector * 512;
/* The block device implements "barriers", where the Guest indicates
@ -1430,7 +1450,7 @@ static bool service_io(struct device *dev)
* It'd be nice if we supported eject, for example, but we don't. */
if (out->type & VIRTIO_BLK_T_SCSI_CMD) {
fprintf(stderr, "Scsi commands unsupported\n");
in->status = VIRTIO_BLK_S_UNSUPP;
*in = VIRTIO_BLK_S_UNSUPP;
wlen = sizeof(*in);
} else if (out->type & VIRTIO_BLK_T_OUT) {
/* Write */
@ -1453,7 +1473,7 @@ static bool service_io(struct device *dev)
errx(1, "Write past end %llu+%u", off, ret);
}
wlen = sizeof(*in);
in->status = (ret >= 0 ? VIRTIO_BLK_S_OK : VIRTIO_BLK_S_IOERR);
*in = (ret >= 0 ? VIRTIO_BLK_S_OK : VIRTIO_BLK_S_IOERR);
} else {
/* Read */
@ -1466,10 +1486,10 @@ static bool service_io(struct device *dev)
verbose("READ from sector %llu: %i\n", out->sector, ret);
if (ret >= 0) {
wlen = sizeof(*in) + ret;
in->status = VIRTIO_BLK_S_OK;
*in = VIRTIO_BLK_S_OK;
} else {
wlen = sizeof(*in);
in->status = VIRTIO_BLK_S_IOERR;
*in = VIRTIO_BLK_S_IOERR;
}
}

4
Documentation/oops-tracing.txt
View File

@ -253,6 +253,10 @@ characters, each representing a particular tainted value.
8: 'D' if the kernel has died recently, i.e. there was an OOPS or BUG.
9: 'A' if the ACPI table has been overridden.
10: 'W' if a warning has previously been issued by the kernel.
The primary reason for the 'Tainted: ' string is to tell kernel
debuggers if this is a clean kernel or if anything unusual has
occurred. Tainting is permanent: even if an offending module is

23
Documentation/powerpc/mpc52xx-device-tree-bindings.txt
View File

@ -186,6 +186,12 @@ Recommended soc5200 child nodes; populate as needed for your board
name device_type compatible Description
---- ----------- ---------- -----------
gpt@<addr> gpt fsl,mpc5200-gpt General purpose timers
gpt@<addr> gpt fsl,mpc5200-gpt-gpio General purpose
timers in GPIO mode
gpio@<addr> fsl,mpc5200-gpio MPC5200 simple gpio
controller
gpio@<addr> fsl,mpc5200-gpio-wkup MPC5200 wakeup gpio
controller
rtc@<addr> rtc mpc5200-rtc Real time clock
mscan@<addr> mscan mpc5200-mscan CAN bus controller
pci@<addr> pci mpc5200-pci PCI bridge
@ -225,6 +231,23 @@ PSC in i2s mode: The mpc5200 and mpc5200b PSCs are not compatible when in
i2s mode. An 'mpc5200b-psc-i2s' node cannot include 'mpc5200-psc-i2s' in the
compatible field.
7) GPIO controller nodes
Each GPIO controller node should have the empty property gpio-controller and
#gpio-cells set to 2. First cell is the GPIO number which is interpreted
according to the bit numbers in the GPIO control registers. The second cell
is for flags which is currently unsused.
8) FEC nodes
The FEC node can specify one of the following properties to configure
the MII link:
"fsl,7-wire-mode" - An empty property that specifies the link uses 7-wire
mode instead of MII
"current-speed" - Specifies that the MII should be configured for a fixed
speed. This property should contain two cells. The
first cell specifies the speed in Mbps and the second
should be '0' for half duplex and '1' for full duplex
"phy-handle" - Contains a phandle to an Ethernet PHY.
IV - Extra Notes
================

165
Documentation/scheduler/sched-design.txt
View File

@ -1,165 +0,0 @@
Goals, Design and Implementation of the
new ultra-scalable O(1) scheduler
This is an edited version of an email Ingo Molnar sent to
lkml on 4 Jan 2002. It describes the goals, design, and
implementation of Ingo's new ultra-scalable O(1) scheduler.
Last Updated: 18 April 2002.
Goal
====
The main goal of the new scheduler is to keep all the good things we know
and love about the current Linux scheduler:
- good interactive performance even during high load: if the user
types or clicks then the system must react instantly and must execute
the user tasks smoothly, even during considerable background load.
- good scheduling/wakeup performance with 1-2 runnable processes.
- fairness: no process should stay without any timeslice for any
unreasonable amount of time. No process should get an unjustly high
amount of CPU time.
- priorities: less important tasks can be started with lower priority,
more important tasks with higher priority.
- SMP efficiency: no CPU should stay idle if there is work to do.
- SMP affinity: processes which run on one CPU should stay affine to
that CPU. Processes should not bounce between CPUs too frequently.
- plus additional scheduler features: RT scheduling, CPU binding.
and the goal is also to add a few new things:
- fully O(1) scheduling. Are you tired of the recalculation loop
blowing the L1 cache away every now and then? Do you think the goodness
loop is taking a bit too long to finish if there are lots of runnable
processes? This new scheduler takes no prisoners: wakeup(), schedule(),
the timer interrupt are all O(1) algorithms. There is no recalculation
loop. There is no goodness loop either.
- 'perfect' SMP scalability. With the new scheduler there is no 'big'
runqueue_lock anymore - it's all per-CPU runqueues and locks - two
tasks on two separate CPUs can wake up, schedule and context-switch
completely in parallel, without any interlocking. All
scheduling-relevant data is structured for maximum scalability.
- better SMP affinity. The old scheduler has a particular weakness that
causes the random bouncing of tasks between CPUs if/when higher
priority/interactive tasks, this was observed and reported by many
people. The reason is that the timeslice recalculation loop first needs
every currently running task to consume its timeslice. But when this
happens on eg. an 8-way system, then this property starves an
increasing number of CPUs from executing any process. Once the last
task that has a timeslice left has finished using up that timeslice,
the recalculation loop is triggered and other CPUs can start executing
tasks again - after having idled around for a number of timer ticks.
The more CPUs, the worse this effect.
Furthermore, this same effect causes the bouncing effect as well:
whenever there is such a 'timeslice squeeze' of the global runqueue,
idle processors start executing tasks which are not affine to that CPU.
(because the affine tasks have finished off their timeslices already.)
The new scheduler solves this problem by distributing timeslices on a
per-CPU basis, without having any global synchronization or
recalculation.
- batch scheduling. A significant proportion of computing-intensive tasks
benefit from batch-scheduling, where timeslices are long and processes
are roundrobin scheduled. The new scheduler does such batch-scheduling
of the lowest priority tasks - so nice +19 jobs will get
'batch-scheduled' automatically. With this scheduler, nice +19 jobs are
in essence SCHED_IDLE, from an interactiveness point of view.
- handle extreme loads more smoothly, without breakdown and scheduling
storms.
- O(1) RT scheduling. For those RT folks who are paranoid about the
O(nr_running) property of the goodness loop and the recalculation loop.
- run fork()ed children before the parent. Andrea has pointed out the
advantages of this a few months ago, but patches for this feature
do not work with the old scheduler as well as they should,
because idle processes often steal the new child before the fork()ing
CPU gets to execute it.
Design
======
The core of the new scheduler contains the following mechanisms:
- *two* priority-ordered 'priority arrays' per CPU. There is an 'active'
array and an 'expired' array. The active array contains all tasks that
are affine to this CPU and have timeslices left. The expired array
contains all tasks which have used up their timeslices - but this array
is kept sorted as well. The active and expired array is not accessed
directly, it's accessed through two pointers in the per-CPU runqueue
structure. If all active tasks are used up then we 'switch' the two
pointers and from now on the ready-to-go (former-) expired array is the
active array - and the empty active array serves as the new collector
for expired tasks.
- there is a 64-bit bitmap cache for array indices. Finding the highest
priority task is thus a matter of two x86 BSFL bit-search instructions.
the split-array solution enables us to have an arbitrary number of active
and expired tasks, and the recalculation of timeslices can be done
immediately when the timeslice expires. Because the arrays are always
access through the pointers in the runqueue, switching the two arrays can
be done very quickly.
this is a hybride priority-list approach coupled with roundrobin
scheduling and the array-switch method of distributing timeslices.
- there is a per-task 'load estimator'.
one of the toughest things to get right is good interactive feel during
heavy system load. While playing with various scheduler variants i found
that the best interactive feel is achieved not by 'boosting' interactive
tasks, but by 'punishing' tasks that want to use more CPU time than there
is available. This method is also much easier to do in an O(1) fashion.
to establish the actual 'load' the task contributes to the system, a
complex-looking but pretty accurate method is used: there is a 4-entry
'history' ringbuffer of the task's activities during the last 4 seconds.
This ringbuffer is operated without much overhead. The entries tell the
scheduler a pretty accurate load-history of the task: has it used up more
CPU time or less during the past N seconds. [the size '4' and the interval
of 4x 1 seconds was found by lots of experimentation - this part is
flexible and can be changed in both directions.]
the penalty a task gets for generating more load than the CPU can handle
is a priority decrease - there is a maximum amount to this penalty
relative to their static priority, so even fully CPU-bound tasks will
observe each other's priorities, and will share the CPU accordingly.
the SMP load-balancer can be extended/switched with additional parallel
computing and cache hierarchy concepts: NUMA scheduling, multi-core CPUs
can be supported easily by changing the load-balancer. Right now it's
tuned for my SMP systems.
i skipped the prev->mm == next->mm advantage - no workload i know of shows
any sensitivity to this. It can be added back by sacrificing O(1)
schedule() [the current and one-lower priority list can be searched for a
that->mm == current->mm condition], but costs a fair number of cycles
during a number of important workloads, so i wanted to avoid this as much
as possible.
- the SMP idle-task startup code was still racy and the new scheduler
triggered this. So i streamlined the idle-setup code a bit. We do not call
into schedule() before all processors have started up fully and all idle
threads are in place.
- the patch also cleans up a number of aspects of sched.c - moves code
into other areas of the kernel where it's appropriate, and simplifies
certain code paths and data constructs. As a result, the new scheduler's
code is smaller than the old one.
Ingo

22
Documentation/scsi/ChangeLog.megaraid_sas
View File

@ -1,3 +1,25 @@
1 Release Date : Mon. March 10 11:02:31 PDT 2008 -
(emaild-id:megaraidlinux@lsi.com)
Sumant Patro
Bo Yang
2 Current Version : 00.00.03.20-RC1
3 Older Version : 00.00.03.16
1. Rollback the sense info implementation
Sense buffer ptr data type in the ioctl path is reverted back
to u32 * as in previous versions of driver.
2. Fixed the driver frame count.
When Driver sent wrong frame count to firmware. As this
particular command is sent to drive, FW is seeing continuous
chip resets and so the command will timeout.
3. Add the new controller(1078DE) support to the driver
and Increase the max_wait to 60 from 10 in the controller
operational status. With this max_wait increase, driver will
make sure the FW will finish the pending cmd for KDUMP case.
1 Release Date : Thur. Nov. 07 16:30:43 PST 2007 -
(emaild-id:megaraidlinux@lsi.com)
Sumant Patro

1
Documentation/sound/alsa/ALSA-Configuration.txt
View File

@ -795,6 +795,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
lg-lw LG LW20/LW25 laptop
tcl TCL S700
clevo Clevo laptops (m520G, m665n)
medion Medion Rim 2150
test for testing/debugging purpose, almost all controls can be
adjusted. Appearing only when compiled with
$CONFIG_SND_DEBUG=y

2
Documentation/sysrq.txt
View File

@ -85,6 +85,8 @@ On all - write a character to /proc/sysrq-trigger. e.g.:
'k' - Secure Access Key (SAK) Kills all programs on the current virtual
console. NOTE: See important comments below in SAK section.
'l' - Shows a stack backtrace for all active CPUs.
'm' - Will dump current memory info to your console.
'n' - Used to make RT tasks nice-able

33
Documentation/thermal/sysfs-api.txt
View File

@ -108,10 +108,12 @@ and throttle appropriate devices.
RO read only value
RW read/write value
All thermal sysfs attributes will be represented under /sys/class/thermal
Thermal sysfs attributes will be represented under /sys/class/thermal.
Hwmon sysfs I/F extension is also available under /sys/class/hwmon
if hwmon is compiled in or built as a module.
Thermal zone device sys I/F, created once it's registered:
|thermal_zone[0-*]:
/sys/class/thermal/thermal_zone[0-*]:
|-----type: Type of the thermal zone
|-----temp: Current temperature
|-----mode: Working mode of the thermal zone
@ -119,7 +121,7 @@ Thermal zone device sys I/F, created once it's registered:
|-----trip_point_[0-*]_type: Trip point type
Thermal cooling device sys I/F, created once it's registered:
|cooling_device[0-*]:
/sys/class/thermal/cooling_device[0-*]:
|-----type : Type of the cooling device(processor/fan/...)
|-----max_state: Maximum cooling state of the cooling device
|-----cur_state: Current cooling state of the cooling device
@ -130,10 +132,19 @@ They represent the relationship between a thermal zone and its associated coolin
They are created/removed for each
thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful execution.
|thermal_zone[0-*]
/sys/class/thermal/thermal_zone[0-*]
|-----cdev[0-*]: The [0-*]th cooling device in the current thermal zone
|-----cdev[0-*]_trip_point: Trip point that cdev[0-*] is associated with
Besides the thermal zone device sysfs I/F and cooling device sysfs I/F,
the generic thermal driver also creates a hwmon sysfs I/F for each _type_ of
thermal zone device. E.g. the generic thermal driver registers one hwmon class device
and build the associated hwmon sysfs I/F for all the registered ACPI thermal zones.
/sys/class/hwmon/hwmon[0-*]:
|-----name: The type of the thermal zone devices.
|-----temp[1-*]_input: The current temperature of thermal zone [1-*].
|-----temp[1-*]_critical: The critical trip point of thermal zone [1-*].
Please read Documentation/hwmon/sysfs-interface for additional information.
***************************
* Thermal zone attributes *
@ -141,7 +152,10 @@ thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful e
type Strings which represent the thermal zone type.
This is given by thermal zone driver as part of registration.
Eg: "ACPI thermal zone" indicates it's a ACPI thermal device
Eg: "acpitz" indicates it's an ACPI thermal device.
In order to keep it consistent with hwmon sys attribute,
this should be a short, lowercase string,
not containing spaces nor dashes.
RO
Required
@ -218,7 +232,7 @@ the sys I/F structure will be built like this:
/sys/class/thermal:
|thermal_zone1:
|-----type: ACPI thermal zone
|-----type: acpitz
|-----temp: 37000
|-----mode: kernel
|-----trip_point_0_temp: 100000
@ -243,3 +257,10 @@ the sys I/F structure will be built like this:
|-----type: Fan
|-----max_state: 2
|-----cur_state: 0
/sys/class/hwmon:
|hwmon0:
|-----name: acpitz
|-----temp1_input: 37000
|-----temp1_crit: 100000

3
Documentation/video4linux/CARDLIST.saa7134
View File

@ -128,7 +128,7 @@
127 -> Beholder BeholdTV 507 FM/RDS / BeholdTV 509 FM [0000:5071,0000:507B,5ace:5070,5ace:5090]
128 -> Beholder BeholdTV Columbus TVFM [0000:5201]
129 -> Beholder BeholdTV 607 / BeholdTV 609 [5ace:6070,5ace:6071,5ace:6072,5ace:6073,5ace:6090,5ace:6091,5ace:6092,5ace:6093]
130 -> Beholder BeholdTV M6 / BeholdTV M6 Extra [5ace:6190,5ace:6193]
130 -> Beholder BeholdTV M6 / BeholdTV M6 Extra [5ace:6190,5ace:6193,5ace:6191]
131 -> Twinhan Hybrid DTV-DVB 3056 PCI [1822:0022]
132 -> Genius TVGO AM11MCE
133 -> NXP Snake DVB-S reference design
@ -140,3 +140,4 @@
139 -> Compro VideoMate T750 [185b:c900]
140 -> Avermedia DVB-S Pro A700 [1461:a7a1]
141 -> Avermedia DVB-S Hybrid+FM A700 [1461:a7a2]
142 -> Beholder BeholdTV H6 [5ace:6290]

34
Documentation/video4linux/cx18.txt Normal file
View File

@ -0,0 +1,34 @@
Some notes regarding the cx18 driver for the Conexant CX23418 MPEG
encoder chip:
1) The only hardware currently supported is the Hauppauge HVR-1600.
2) Some people have problems getting the i2c bus to work. Cause unknown.
The symptom is that the eeprom cannot be read and the card is
unusable.
3) The audio from the analog tuner is mono only. Probably caused by
incorrect audio register information in the datasheet. We are
waiting for updated information from Conexant.
4) VBI (raw or sliced) has not yet been implemented.
5) MPEG indexing is not yet implemented.
6) The driver is still a bit rough around the edges, this should
improve over time.
Firmware:
The firmware needs to be extracted from the Windows Hauppauge HVR-1600
driver, available here:
http://hauppauge.lightpath.net/software/install_cd/hauppauge_cd_3.4d1.zip
Unzip, then copy the following files to the firmware directory
and rename them as follows:
Drivers/Driver18/hcw18apu.rom -> v4l-cx23418-apu.fw
Drivers/Driver18/hcw18enc.rom -> v4l-cx23418-cpu.fw
Drivers/Driver18/hcw18mlC.rom -> v4l-cx23418-dig.fw

37
Documentation/vm/slabinfo.c
View File

@ -31,14 +31,14 @@ struct slabinfo {
int hwcache_align, object_size, objs_per_slab;
int sanity_checks, slab_size, store_user, trace;
int order, poison, reclaim_account, red_zone;
unsigned long partial, objects, slabs;
unsigned long partial, objects, slabs, objects_partial, objects_total;
unsigned long alloc_fastpath, alloc_slowpath;
unsigned long free_fastpath, free_slowpath;
unsigned long free_frozen, free_add_partial, free_remove_partial;
unsigned long alloc_from_partial, alloc_slab, free_slab, alloc_refill;
unsigned long cpuslab_flush, deactivate_full, deactivate_empty;
unsigned long deactivate_to_head, deactivate_to_tail;
unsigned long deactivate_remote_frees;
unsigned long deactivate_remote_frees, order_fallback;
int numa[MAX_NODES];
int numa_partial[MAX_NODES];
} slabinfo[MAX_SLABS];
@ -293,7 +293,7 @@ int line = 0;
void first_line(void)
{
if (show_activity)
printf("Name Objects Alloc Free %%Fast\n");
printf("Name Objects Alloc Free %%Fast Fallb O\n");
else
printf("Name Objects Objsize Space "
"Slabs/Part/Cpu O/S O %%Fr %%Ef Flg\n");
@ -540,7 +540,8 @@ void slabcache(struct slabinfo *s)
return;
store_size(size_str, slab_size(s));
snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs, s->partial, s->cpu_slabs);
snprintf(dist_str, 40, "%lu/%lu/%d", s->slabs - s->cpu_slabs,
s->partial, s->cpu_slabs);
if (!line++)
first_line();
@ -572,11 +573,12 @@ void slabcache(struct slabinfo *s)
total_alloc = s->alloc_fastpath + s->alloc_slowpath;
total_free = s->free_fastpath + s->free_slowpath;
printf("%-21s %8ld %8ld %8ld %3ld %3ld \n",
printf("%-21s %8ld %10ld %10ld %3ld %3ld %5ld %1d\n",
s->name, s->objects,
total_alloc, total_free,
total_alloc ? (s->alloc_fastpath * 100 / total_alloc) : 0,
total_free ? (s->free_fastpath * 100 / total_free) : 0);
total_free ? (s->free_fastpath * 100 / total_free) : 0,
s->order_fallback, s->order);
}
else
printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n",
@ -776,7 +778,6 @@ void totals(void)
unsigned long used;
unsigned long long wasted;
unsigned long long objwaste;
long long objects_in_partial_slabs;
unsigned long percentage_partial_slabs;
unsigned long percentage_partial_objs;
@ -790,18 +791,11 @@ void totals(void)
wasted = size - used;
objwaste = s->slab_size - s->object_size;
objects_in_partial_slabs = s->objects -
(s->slabs - s->partial - s ->cpu_slabs) *
s->objs_per_slab;
if (objects_in_partial_slabs < 0)
objects_in_partial_slabs = 0;
percentage_partial_slabs = s->partial * 100 / s->slabs;
if (percentage_partial_slabs > 100)
percentage_partial_slabs = 100;
percentage_partial_objs = objects_in_partial_slabs * 100
percentage_partial_objs = s->objects_partial * 100
/ s->objects;
if (percentage_partial_objs > 100)
@ -823,8 +817,8 @@ void totals(void)
min_objects = s->objects;
if (used < min_used)
min_used = used;
if (objects_in_partial_slabs < min_partobj)
min_partobj = objects_in_partial_slabs;
if (s->objects_partial < min_partobj)
min_partobj = s->objects_partial;
if (percentage_partial_slabs < min_ppart)
min_ppart = percentage_partial_slabs;
if (percentage_partial_objs < min_ppartobj)
@ -848,8 +842,8 @@ void totals(void)
max_objects = s->objects;
if (used > max_used)
max_used = used;
if (objects_in_partial_slabs > max_partobj)
max_partobj = objects_in_partial_slabs;
if (s->objects_partial > max_partobj)
max_partobj = s->objects_partial;
if (percentage_partial_slabs > max_ppart)
max_ppart = percentage_partial_slabs;
if (percentage_partial_objs > max_ppartobj)
@ -864,7 +858,7 @@ void totals(void)
total_objects += s->objects;
total_used += used;
total_partobj += objects_in_partial_slabs;
total_partobj += s->objects_partial;
total_ppart += percentage_partial_slabs;
total_ppartobj += percentage_partial_objs;
@ -1160,6 +1154,8 @@ void read_slab_dir(void)
slab->hwcache_align = get_obj("hwcache_align");
slab->object_size = get_obj("object_size");
slab->objects = get_obj("objects");
slab->objects_partial = get_obj("objects_partial");
slab->objects_total = get_obj("objects_total");
slab->objs_per_slab = get_obj("objs_per_slab");
slab->order = get_obj("order");
slab->partial = get_obj("partial");
@ -1193,6 +1189,7 @@ void read_slab_dir(void)
slab->deactivate_to_head = get_obj("deactivate_to_head");
slab->deactivate_to_tail = get_obj("deactivate_to_tail");
slab->deactivate_remote_frees = get_obj("deactivate_remote_frees");
slab->order_fallback = get_obj("order_fallback");
chdir("..");
if (slab->name[0] == ':')
alias_targets++;

169
MAINTAINERS
View File

@ -752,11 +752,13 @@ W: http://atmelwlandriver.sourceforge.net/
S: Maintained
AUDIT SUBSYSTEM
P: David Woodhouse
M: dwmw2@infradead.org
P: Al Viro
M: viro@zeniv.linux.org.uk
P: Eric Paris
M: eparis@redhat.com
L: linux-audit@redhat.com (subscribers-only)
W: http://people.redhat.com/sgrubb/audit/
T: git kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6.git
T: git git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current.git
S: Maintained
AUXILIARY DISPLAY DRIVERS
@ -1037,7 +1039,7 @@ P: Urs Thuermann
M: urs.thuermann@volkswagen.de
P: Oliver Hartkopp
M: oliver.hartkopp@volkswagen.de
L: socketcan-core@lists.berlios.de
L: socketcan-core@lists.berlios.de (subscribers-only)
W: http://developer.berlios.de/projects/socketcan/
S: Maintained
@ -1194,9 +1196,9 @@ S: Maintained
CPUSETS
P: Paul Jackson
P: Simon Derr
P: Paul Menage
M: pj@sgi.com
M: simon.derr@bull.net
M: menage@google.com
L: linux-kernel@vger.kernel.org
W: http://www.bullopensource.org/cpuset/
S: Supported
@ -1531,6 +1533,13 @@ L: bluesmoke-devel@lists.sourceforge.net
W: bluesmoke.sourceforge.net
S: Maintained
EEEPC LAPTOP EXTRAS DRIVER
P: Corentin Chary
M: corentincj@iksaif.net
L: acpi4asus-user@lists.sourceforge.net
W: http://sourceforge.net/projects/acpi4asus
S: Maintained
EEPRO100 NETWORK DRIVER
P: Andrey V. Savochkin
M: saw@saw.sw.com.sg
@ -1548,6 +1557,14 @@ M: raisch@de.ibm.com
L: general@lists.openfabrics.org
S: Supported
EMBEDDED LINUX
P: Paul Gortmaker
M: paul.gortmaker@windriver.com
P David Woodhouse
M: dwmw2@infradead.org
L: linux-embedded@vger.kernel.org
S: Maintained
EMULEX LPFC FC SCSI DRIVER
P: James Smart
M: james.smart@emulex.com
@ -2694,7 +2711,7 @@ P: David Howells
M: dhowells@redhat.com
P: Koichi Yasutake
M: yasutake.koichi@jp.panasonic.com
L: linux-am33-list@redhat.com
L: linux-am33-list@redhat.com (moderated for non-subscribers)
W: ftp://ftp.redhat.com/pub/redhat/gnupro/AM33/
S: Maintained
@ -2757,7 +2774,7 @@ M: rubini@ipvvis.unipv.it
L: linux-kernel@vger.kernel.org
S: Maintained
MOXA SMARTIO/INDUSTIO SERIAL CARD (MXSER 2.0)
MOXA SMARTIO/INDUSTIO/INTELLIO SERIAL CARD
P: Jiri Slaby
M: jirislaby@gmail.com
L: linux-kernel@vger.kernel.org
@ -3113,7 +3130,8 @@ PCI SUBSYSTEM
P: Jesse Barnes
M: jbarnes@virtuousgeek.org
L: linux-kernel@vger.kernel.org
L: linux-pci@atrey.karlin.mff.cuni.cz
L: linux-pci@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/jbarnes/pci-2.6.git
S: Supported
PCI HOTPLUG CORE
@ -3574,6 +3592,13 @@ M: pfg@sgi.com
L: linux-ia64@vger.kernel.org
S: Supported
SFC NETWORK DRIVER
P: Steve Hodgson
P: Ben Hutchings
P: Robert Stonehouse
M: linux-net-drivers@solarflare.com
S: Supported
SGI VISUAL WORKSTATION 320 AND 540
P: Andrey Panin
M: pazke@donpac.ru
@ -3740,42 +3765,6 @@ M: chrisw@sous-sol.org
L: stable@kernel.org
S: Maintained
TPM DEVICE DRIVER
P: Kylene Hall
M: tpmdd-devel@lists.sourceforge.net
W: http://tpmdd.sourceforge.net
P: Marcel Selhorst
M: tpm@selhorst.net
W: http://www.prosec.rub.de/tpm/
L: tpmdd-devel@lists.sourceforge.net
S: Maintained
Telecom Clock Driver for MCPL0010
P: Mark Gross
M: mark.gross@intel.com
S: Supported
TENSILICA XTENSA PORT (xtensa):
P: Chris Zankel
M: chris@zankel.net
S: Maintained
THINKPAD ACPI EXTRAS DRIVER
P: Henrique de Moraes Holschuh
M: ibm-acpi@hmh.eng.br
L: ibm-acpi-devel@lists.sourceforge.net
W: http://ibm-acpi.sourceforge.net
W: http://thinkwiki.org/wiki/Ibm-acpi
T: git repo.or.cz/linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git
S: Maintained
UltraSPARC (sparc64):
P: David S. Miller
M: davem@davemloft.net
L: sparclinux@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6.git
S: Maintained
SHARP LH SUPPORT (LH7952X & LH7A40X)
P: Marc Singer
M: elf@buici.com
@ -3872,6 +3861,12 @@ P: Christoph Hellwig
M: hch@infradead.org
S: Maintained
TASKSTATS STATISTICS INTERFACE
P: Shailabh Nagar
M: nagar@watson.ibm.com
L: linux-kernel@vger.kernel.org
S: Maintained
TC CLASSIFIER
P: Jamal Hadi Salim
M: hadi@cyberus.ca
@ -3894,6 +3889,25 @@ M: andy@greyhouse.net
L: netdev@vger.kernel.org
S: Supported
Telecom Clock Driver for MCPL0010
P: Mark Gross
M: mark.gross@intel.com
S: Supported
TENSILICA XTENSA PORT (xtensa):
P: Chris Zankel
M: chris@zankel.net
S: Maintained
THINKPAD ACPI EXTRAS DRIVER
P: Henrique de Moraes Holschuh
M: ibm-acpi@hmh.eng.br
L: ibm-acpi-devel@lists.sourceforge.net
W: http://ibm-acpi.sourceforge.net
W: http://thinkwiki.org/wiki/Ibm-acpi
T: git repo.or.cz/linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git
S: Maintained
TI FLASH MEDIA INTERFACE DRIVER
P: Alex Dubov
M: oakad@yahoo.com
@ -3911,12 +3925,6 @@ P: Deepak Saxena
M: dsaxena@plexity.net
S: Maintained
TASKSTATS STATISTICS INTERFACE
P: Shailabh Nagar
M: nagar@watson.ibm.com
L: linux-kernel@vger.kernel.org
S: Maintained
TIPC NETWORK LAYER
P: Per Liden
M: per.liden@ericsson.com
@ -3950,6 +3958,16 @@ L: tlinux-users@tce.toshiba-dme.co.jp
W: http://www.buzzard.org.uk/toshiba/
S: Maintained
TPM DEVICE DRIVER
P: Kylene Hall
M: tpmdd-devel@lists.sourceforge.net
W: http://tpmdd.sourceforge.net
P: Marcel Selhorst
M: tpm@selhorst.net
W: http://www.prosec.rub.de/tpm/
L: tpmdd-devel@lists.sourceforge.net
S: Maintained
TRIDENT 4DWAVE/SIS 7018 PCI AUDIO CORE
P: Muli Ben-Yehuda
M: mulix@mulix.org
@ -3962,6 +3980,12 @@ M: trivial@kernel.org
L: linux-kernel@vger.kernel.org
S: Maintained
TTY LAYER
P: Alan Cox
M: alan@lxorguk.ukuu.org.uk
L: linux-kernel@vger.kernel.org
S: Maintained
TULIP NETWORK DRIVERS
P: Grant Grundler
M: grundler@parisc-linux.org
@ -4027,6 +4051,12 @@ L: linux-usb@vger.kernel.org
S: Maintained
W: http://www.kroah.com/linux-usb/
USB CYPRESS C67X00 DRIVER
P: Peter Korsgaard
M: jacmet@sunsite.dk
L: linux-usb@vger.kernel.org
S: Maintained
USB DAVICOM DM9601 DRIVER
P: Peter Korsgaard
M: jacmet@sunsite.dk
@ -4130,6 +4160,20 @@ L: linux-usb@vger.kernel.org
W: http://www.chello.nl/~j.vreeken/se401/
S: Maintained
USB SERIAL BELKIN F5U103 DRIVER
P: William Greathouse
M: wgreathouse@smva.com
L: linux-usb@vger.kernel.org
S: Maintained
USB SERIAL CYPRESS M8 DRIVER
P: Lonnie Mendez
M: dignome@gmail.com
L: linux-usb@vger.kernel.org
S: Maintained
W: http://geocities.com/i0xox0i
W: http://firstlight.net/cvs
USB SERIAL CYBERJACK DRIVER
P: Matthias Bruestle and Harald Welte
M: support@reiner-sct.com
@ -4149,20 +4193,6 @@ M: gregkh@suse.de
L: linux-usb@vger.kernel.org
S: Supported
USB SERIAL BELKIN F5U103 DRIVER
P: William Greathouse
M: wgreathouse@smva.com
L: linux-usb@vger.kernel.org
S: Maintained
USB SERIAL CYPRESS M8 DRIVER
P: Lonnie Mendez
M: dignome@gmail.com
L: linux-usb@vger.kernel.org
S: Maintained
W: http://geocities.com/i0xox0i
W: http://firstlight.net/cvs
USB SERIAL EMPEG EMPEG-CAR MARK I/II DRIVER
P: Gary Brubaker
M: xavyer@ix.netcom.com
@ -4265,7 +4295,7 @@ M: gregkh@suse.de
L: linux-kernel@vger.kernel.org
S: Maintained
FAT/VFAT/MSDOS FILESYSTEM:
VFAT/FAT/MSDOS FILESYSTEM:
P: OGAWA Hirofumi
M: hirofumi@mail.parknet.co.jp
L: linux-kernel@vger.kernel.org
@ -4310,6 +4340,13 @@ M: dushistov@mail.ru
L: linux-kernel@vger.kernel.org
S: Maintained
UltraSPARC (sparc64):
P: David S. Miller
M: davem@davemloft.net
L: sparclinux@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6.git
S: Maintained
USB DIAMOND RIO500 DRIVER
P: Cesar Miquel
M: miquel@df.uba.ar

37
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 25
EXTRAVERSION =
SUBLEVEL = 26
EXTRAVERSION = -rc1
NAME = Funky Weasel is Jiggy wit it
# *DOCUMENTATION*
@ -794,7 +794,7 @@ endif # ifdef CONFIG_KALLSYMS
quiet_cmd_vmlinux-modpost = LD $@
cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
$(vmlinux-init) --start-group $(vmlinux-main) --end-group \
$(filter-out $(vmlinux-init) $(vmlinux-main) $(vmlinux-lds) FORCE ,$^)
$(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
define rule_vmlinux-modpost
:
+$(call cmd,vmlinux-modpost)
@ -818,7 +818,9 @@ endif
ifdef CONFIG_KALLSYMS
.tmp_vmlinux1: vmlinux.o
endif
vmlinux.o: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE
modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
$(call if_changed_rule,vmlinux-modpost)
# The actual objects are generated when descending,
@ -1174,8 +1176,10 @@ rpm: include/config/kernel.release FORCE
# Brief documentation of the typical targets used
# ---------------------------------------------------------------------------
boards := $(wildcard $(srctree)/arch/$(ARCH)/configs/*_defconfig)
boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
boards := $(notdir $(boards))
board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
board-dirs := $(sort $(notdir $(board-dirs:/=)))
help:
@echo 'Cleaning targets:'
@ -1221,14 +1225,19 @@ help:
@echo 'Documentation targets:'
@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
@echo ''
@echo 'Architecture specific targets ($(ARCH)):'
@echo 'Architecture specific targets ($(SRCARCH)):'
@$(if $(archhelp),$(archhelp),\
echo ' No architecture specific help defined for $(ARCH)')
echo ' No architecture specific help defined for $(SRCARCH)')
@echo ''
@$(if $(boards), \
$(foreach b, $(boards), \
printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
echo '')
@$(if $(board-dirs), \
$(foreach b, $(board-dirs), \
printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
printf " %-16s - Show all of the above\\n" help-boards; \
echo '')
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
@echo ' make V=2 [targets] 2 => give reason for rebuild of target'
@ -1240,6 +1249,20 @@ help:
@echo 'For further info see the ./README file'
help-board-dirs := $(addprefix help-,$(board-dirs))
help-boards: $(help-board-dirs)
boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
$(help-board-dirs): help-%:
@echo 'Architecture specific targets ($(SRCARCH) $*):'
@$(if $(boards-per-dir), \
$(foreach b, $(boards-per-dir), \
printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
echo '')
# Documentation targets
# ---------------------------------------------------------------------------
%docs: scripts_basic FORCE

3
arch/Kconfig
View File

@ -36,3 +36,6 @@ config HAVE_KPROBES
config HAVE_KRETPROBES
def_bool n
config HAVE_DMA_ATTRS
def_bool n

6
arch/alpha/kernel/asm-offsets.c
View File

@ -8,13 +8,9 @@
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/ptrace.h>
#include <linux/kbuild.h>
#include <asm/io.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
void foo(void)
{
DEFINE(TI_TASK, offsetof(struct thread_info, task));

69
arch/alpha/kernel/osf_sys.c
View File

@ -981,27 +981,18 @@ asmlinkage int
osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
struct timeval32 __user *tvp)
{
fd_set_bits fds;
char *bits;
size_t size;
long timeout;
int ret = -EINVAL;
struct fdtable *fdt;
int max_fds;
timeout = MAX_SCHEDULE_TIMEOUT;
s64 timeout = MAX_SCHEDULE_TIMEOUT;
if (tvp) {
time_t sec, usec;
if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp))
|| __get_user(sec, &tvp->tv_sec)
|| __get_user(usec, &tvp->tv_usec)) {
ret = -EFAULT;
goto out_nofds;
return -EFAULT;
}
if (sec < 0 || usec < 0)
goto out_nofds;
return -EINVAL;
if ((unsigned long) sec < MAX_SELECT_SECONDS) {
timeout = (usec + 1000000/HZ - 1) / (1000000/HZ);
@ -1009,60 +1000,8 @@ osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp,
}
}
rcu_read_lock();
fdt = files_fdtable(current->files);
max_fds = fdt->max_fds;
rcu_read_unlock();
if (n < 0 || n > max_fds)
goto out_nofds;
/*
* We need 6 bitmaps (in/out/ex for both incoming and outgoing),
* since we used fdset we need to allocate memory in units of
* long-words.
*/
ret = -ENOMEM;
size = FDS_BYTES(n);
bits = kmalloc(6 * size, GFP_KERNEL);
if (!bits)
goto out_nofds;
fds.in = (unsigned long *) bits;
fds.out = (unsigned long *) (bits + size);
fds.ex = (unsigned long *) (bits + 2*size);
fds.res_in = (unsigned long *) (bits + 3*size);
fds.res_out = (unsigned long *) (bits + 4*size);
fds.res_ex = (unsigned long *) (bits + 5*size);
if ((ret = get_fd_set(n, inp->fds_bits, fds.in)) ||
(ret = get_fd_set(n, outp->fds_bits, fds.out)) ||
(ret = get_fd_set(n, exp->fds_bits, fds.ex)))
goto out;
zero_fd_set(n, fds.res_in);
zero_fd_set(n, fds.res_out);
zero_fd_set(n, fds.res_ex);
ret = do_select(n, &fds, &timeout);
/* OSF does not copy back the remaining time. */
if (ret < 0)
goto out;
if (!ret) {
ret = -ERESTARTNOHAND;
if (signal_pending(current))
goto out;
ret = 0;
}
if (set_fd_set(n, inp->fds_bits, fds.res_in) ||
set_fd_set(n, outp->fds_bits, fds.res_out) ||
set_fd_set(n, exp->fds_bits, fds.res_ex))
ret = -EFAULT;
out:
kfree(bits);
out_nofds:
return ret;
return core_sys_select(n, inp, outp, exp, &timeout);
}
struct rusage32 {

4
arch/alpha/kernel/pci.c
View File

@ -514,8 +514,8 @@ sys_pciconfig_iobase(long which, unsigned long bus, unsigned long dfn)
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
{
unsigned long start = pci_resource_start(dev, bar);
unsigned long len = pci_resource_len(dev, bar);
resource_size_t start = pci_resource_start(dev, bar);
resource_size_t len = pci_resource_len(dev, bar);
unsigned long flags = pci_resource_flags(dev, bar);
if (!len || !start)

15
arch/arm/Kconfig
View File

@ -8,6 +8,7 @@ mainmenu "Linux Kernel Configuration"
config ARM
bool
default y
select HAVE_IDE
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
select HAVE_OPROFILE
@ -223,7 +224,6 @@ config ARCH_CLPS7500
select TIMER_ACORN
select ISA
select NO_IOPORT
select HAVE_IDE
help
Support for the Cirrus Logic PS7500FE system-on-a-chip.
@ -236,7 +236,6 @@ config ARCH_CO285
bool "Co-EBSA285"
select FOOTBRIDGE
select FOOTBRIDGE_ADDIN
select HAVE_IDE
help
Support for Intel's EBSA285 companion chip.
@ -262,7 +261,6 @@ config ARCH_EP93XX
config ARCH_FOOTBRIDGE
bool "FootBridge"
select FOOTBRIDGE
select HAVE_IDE
help
Support for systems based on the DC21285 companion chip
("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
@ -301,7 +299,6 @@ config ARCH_IOP32X
depends on MMU
select PLAT_IOP
select PCI
select HAVE_IDE
help
Support for Intel's 80219 and IOP32X (XScale) family of
processors.
@ -311,14 +308,12 @@ config ARCH_IOP33X
depends on MMU
select PLAT_IOP
select PCI
select HAVE_IDE
help
Support for Intel's IOP33X (XScale) family of processors.
config ARCH_IXP23XX
bool "IXP23XX-based"
depends on MMU
select HAVE_IDE
select PCI
help
Support for Intel's IXP23xx (XScale) family of processors.
@ -336,14 +331,12 @@ config ARCH_IXP4XX
select GENERIC_GPIO
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
select HAVE_IDE
help
Support for Intel's IXP4XX (XScale) family of processors.
config ARCH_L7200
bool "LinkUp-L7200"
select FIQ
select HAVE_IDE
help
Say Y here if you intend to run this kernel on a LinkUp Systems
L7200 Software Development Board which uses an ARM720T processor.
@ -400,7 +393,6 @@ config ARCH_PXA
depends on MMU
select ARCH_MTD_XIP
select GENERIC_GPIO
select HAVE_IDE
select HAVE_GPIO_LIB
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
@ -416,7 +408,6 @@ config ARCH_RPC
select ARCH_MAY_HAVE_PC_FDC
select ISA_DMA_API
select NO_IOPORT
select HAVE_IDE
help
On the Acorn Risc-PC, Linux can support the internal IDE disk and
CD-ROM interface, serial and parallel port, and the floppy drive.
@ -432,7 +423,6 @@ config ARCH_SA1100
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
select TICK_ONESHOT
select HAVE_IDE
select HAVE_GPIO_LIB
help
Support for StrongARM 11x0 based boards.
@ -440,7 +430,6 @@ config ARCH_SA1100
config ARCH_S3C2410
bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
select GENERIC_GPIO
select HAVE_IDE
help
Samsung S3C2410X CPU based systems, such as the Simtec Electronics
BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
@ -448,7 +437,6 @@ config ARCH_S3C2410
config ARCH_SHARK
bool "Shark"
select HAVE_IDE
select ISA
select ISA_DMA
select PCI
@ -458,7 +446,6 @@ config ARCH_SHARK
config ARCH_LH7A40X
bool "Sharp LH7A40X"
select HAVE_IDE
help
Say Y here for systems based on one of the Sharp LH7A40X
System on a Chip processors. These CPUs include an ARM922T

22
arch/arm/configs/am200epdkit_defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.25-rc3
# Sun Mar 9 06:33:33 2008
# Linux kernel version: 2.6.25
# Sun Apr 20 00:29:49 2008
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
@ -51,7 +51,8 @@ CONFIG_FAIR_GROUP_SCHED=y
# CONFIG_RT_GROUP_SCHED is not set
CONFIG_USER_SCHED=y
# CONFIG_CGROUP_SCHED is not set
# CONFIG_SYSFS_DEPRECATED is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
# CONFIG_RELAY is not set
# CONFIG_NAMESPACES is not set
# CONFIG_BLK_DEV_INITRD is not set
@ -85,6 +86,7 @@ CONFIG_SLAB=y
CONFIG_HAVE_OPROFILE=y
# CONFIG_KPROBES is not set
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
@ -115,7 +117,6 @@ CONFIG_IOSCHED_NOOP=y
CONFIG_DEFAULT_NOOP=y
CONFIG_DEFAULT_IOSCHED="noop"
CONFIG_CLASSIC_RCU=y
# CONFIG_PREEMPT_RCU is not set
#
# System Type
@ -320,8 +321,6 @@ CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_INET6_XFRM_TUNNEL is not set
# CONFIG_INET6_TUNNEL is not set
# CONFIG_NETWORK_SECMARK is not set
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
@ -383,7 +382,6 @@ CONFIG_IEEE80211=m
CONFIG_IEEE80211_CRYPT_WEP=m
# CONFIG_IEEE80211_CRYPT_CCMP is not set
# CONFIG_IEEE80211_CRYPT_TKIP is not set
# CONFIG_IEEE80211_SOFTMAC is not set
# CONFIG_RFKILL is not set
# CONFIG_NET_9P is not set
@ -503,7 +501,7 @@ CONFIG_IDE_MAX_HWIFS=2
CONFIG_BLK_DEV_IDE=m
#
# Please see Documentation/ide.txt for help/info on IDE drives
# Please see Documentation/ide/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_IDE_SATA is not set
CONFIG_BLK_DEV_IDEDISK=m
@ -518,10 +516,9 @@ CONFIG_IDE_PROC_FS=y
#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=m
# CONFIG_BLK_DEV_PLATFORM is not set
# CONFIG_BLK_DEV_IDEDMA is not set
CONFIG_IDE_ARCH_OBSOLETE_INIT=y
# CONFIG_BLK_DEV_HD_ONLY is not set
# CONFIG_BLK_DEV_HD is not set
#
@ -562,6 +559,7 @@ CONFIG_NETDEV_10000=y
#
# CONFIG_WLAN_PRE80211 is not set
# CONFIG_WLAN_80211 is not set
# CONFIG_IWLWIFI_LEDS is not set
# CONFIG_NET_PCMCIA is not set
# CONFIG_WAN is not set
# CONFIG_PPP is not set
@ -707,6 +705,8 @@ CONFIG_SSB_POSSIBLE=y
#
# CONFIG_MFD_SM501 is not set
# CONFIG_MFD_ASIC3 is not set
# CONFIG_HTC_EGPIO is not set
# CONFIG_HTC_PASIC3 is not set
#
# Multimedia devices
@ -745,6 +745,7 @@ CONFIG_FB_TILEBLITTING=y
CONFIG_FB_PXA=y
CONFIG_FB_PXA_PARAMETERS=y
CONFIG_FB_MBX=m
# CONFIG_FB_METRONOME is not set
CONFIG_FB_VIRTUAL=m
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
@ -891,7 +892,6 @@ CONFIG_RTC_LIB=y
# CONFIG_JFS_FS is not set
# CONFIG_FS_POSIX_ACL is not set
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY=y

8
arch/arm/kernel/asm-offsets.c
View File

@ -16,6 +16,7 @@
#include <asm/thread_info.h>
#include <asm/memory.h>
#include <asm/procinfo.h>
#include <linux/kbuild.h>
/*
* Make sure that the compiler and target are compatible.
@ -35,13 +36,6 @@
#error Known good compilers: 3.3
#endif
/* Use marker if you need to separate the values later */
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
int main(void)
{
DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm));

2
arch/arm/kernel/atags.c
View File

@ -35,7 +35,7 @@ create_proc_entries(void)
{
struct proc_dir_entry* tags_entry;
tags_entry = create_proc_read_entry("atags", 0400, &proc_root, read_buffer, &tags_buffer);
tags_entry = create_proc_read_entry("atags", 0400, NULL, read_buffer, &tags_buffer);
if (!tags_entry)
return -ENOMEM;

54
arch/arm/kernel/ecard.c
View File

@ -37,6 +37,7 @@
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/mutex.h>
@ -723,17 +724,14 @@ unsigned int __ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed)
return address;
}
static int ecard_prints(char *buffer, ecard_t *ec)
static int ecard_prints(struct seq_file *m, ecard_t *ec)
{
char *start = buffer;
buffer += sprintf(buffer, " %d: %s ", ec->slot_no,
ec->easi ? "EASI" : " ");
seq_printf(m, " %d: %s ", ec->slot_no, ec->easi ? "EASI" : " ");
if (ec->cid.id == 0) {
struct in_chunk_dir incd;
buffer += sprintf(buffer, "[%04X:%04X] ",
seq_printf(m, "[%04X:%04X] ",
ec->cid.manufacturer, ec->cid.product);
if (!ec->card_desc && ec->cid.cd &&
@ -744,43 +742,43 @@ static int ecard_prints(char *buffer, ecard_t *ec)
strcpy((char *)ec->card_desc, incd.d.string);
}
buffer += sprintf(buffer, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
seq_printf(m, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*");
} else
buffer += sprintf(buffer, "Simple card %d\n", ec->cid.id);
seq_printf(m, "Simple card %d\n", ec->cid.id);
return buffer - start;
return 0;
}
static int get_ecard_dev_info(char *buf, char **start, off_t pos, int count)
static int ecard_devices_proc_show(struct seq_file *m, void *v)
{
ecard_t *ec = cards;
off_t at = 0;
int len, cnt;
cnt = 0;
while (ec && count > cnt) {
len = ecard_prints(buf, ec);
at += len;
if (at >= pos) {
if (!*start) {
*start = buf + (pos - (at - len));
cnt = at - pos;
} else
cnt += len;
buf += len;
}
while (ec) {
ecard_prints(m, ec);
ec = ec->next;
}
return (count > cnt) ? cnt : count;
return 0;
}
static int ecard_devices_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, ecard_devices_proc_show, NULL);
}
static const struct file_operations bus_ecard_proc_fops = {
.owner = THIS_MODULE,
.open = ecard_devices_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static struct proc_dir_entry *proc_bus_ecard_dir = NULL;
static void ecard_proc_init(void)
{
proc_bus_ecard_dir = proc_mkdir("ecard", proc_bus);
create_proc_info_entry("devices", 0, proc_bus_ecard_dir,
get_ecard_dev_info);
proc_bus_ecard_dir = proc_mkdir("bus/ecard", NULL);
proc_create("devices", 0, proc_bus_ecard_dir, &bus_ecard_proc_fops);
}
#define ec_set_resource(ec,nr,st,sz) \

2
arch/arm/kernel/kprobes-decode.c
View File

@ -1176,7 +1176,7 @@ space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi)
* *S (bit 20) updates condition codes
* ADC/SBC/RSC reads the C flag
*/
insn &= 0xfff00ff0; /* Rn = r0, Rd = r0 */
insn &= 0xfff00fff; /* Rn = r0, Rd = r0 */
asi->insn[0] = insn;
asi->insn_handler = (insn & (1 << 20)) ? /* S-bit */
emulate_alu_imm_rwflags : emulate_alu_imm_rflags;

2
arch/arm/kernel/kprobes.c
View File

@ -66,7 +66,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
return -ENOMEM;
for (is = 0; is < MAX_INSN_SIZE; ++is)
p->ainsn.insn[is] = tmp_insn[is];
flush_insns(&p->ainsn.insn, MAX_INSN_SIZE);
flush_insns(p->ainsn.insn, MAX_INSN_SIZE);
break;
case INSN_GOOD_NO_SLOT: /* instruction doesn't need insn slot */

17
arch/arm/kernel/sys_arm.c
View File

@ -34,23 +34,6 @@ extern unsigned long do_mremap(unsigned long addr, unsigned long old_len,
unsigned long new_len, unsigned long flags,
unsigned long new_addr);
/*
* sys_pipe() is the normal C calling standard for creating
* a pipe. It's not the way unix traditionally does this, though.
*/
asmlinkage int sys_pipe(unsigned long __user *fildes)
{
int fd[2];
int error;
error = do_pipe(fd);
if (!error) {
if (copy_to_user(fildes, fd, 2*sizeof(int)))
error = -EFAULT;
}
return error;
}
/* common code for old and new mmaps */
inline long do_mmap2(
unsigned long addr, unsigned long len,

2
arch/arm/mach-at91/at91cap9_devices.c
View File

@ -246,7 +246,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
}
mmc0_data = *data;
at91_clock_associate("mci0_clk", &at91cap9_mmc1_device.dev, "mci_clk");
at91_clock_associate("mci0_clk", &at91cap9_mmc0_device.dev, "mci_clk");
platform_device_register(&at91cap9_mmc0_device);
} else { /* MCI1 */
/* CLK */

2
arch/arm/mach-at91/at91sam9263_devices.c
View File

@ -308,7 +308,7 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data)
}
mmc0_data = *data;
at91_clock_associate("mci0_clk", &at91sam9263_mmc1_device.dev, "mci_clk");
at91_clock_associate("mci0_clk", &at91sam9263_mmc0_device.dev, "mci_clk");
platform_device_register(&at91sam9263_mmc0_device);
} else { /* MCI1 */
/* CLK */

3
arch/arm/mach-at91/board-csb337.c
View File

@ -79,8 +79,7 @@ static struct at91_udc_data __initdata csb337_udc_data = {
static struct i2c_board_info __initdata csb337_i2c_devices[] = {
{
I2C_BOARD_INFO("rtc-ds1307", 0x68),
.type = "ds1307",
I2C_BOARD_INFO("ds1307", 0x68),
},
};

3
arch/arm/mach-at91/board-dk.c
View File

@ -132,8 +132,7 @@ static struct i2c_board_info __initdata dk_i2c_devices[] = {
I2C_BOARD_INFO("x9429", 0x28),
},
{
I2C_BOARD_INFO("at24c", 0x50),
.type = "24c1024",
I2C_BOARD_INFO("24c1024", 0x50),
}
};

3
arch/arm/mach-at91/board-eb9200.c
View File

@ -93,8 +93,7 @@ static struct at91_mmc_data __initdata eb9200_mmc_data = {
static struct i2c_board_info __initdata eb9200_i2c_devices[] = {
{
I2C_BOARD_INFO("at24c", 0x50),
.type = "24c512",
I2C_BOARD_INFO("24c512", 0x50),
},
};

14
arch/arm/mach-at91/pm.c
View File

@ -61,6 +61,15 @@ static inline void sdram_selfrefresh_enable(void)
#else
#include <asm/arch/at91sam9_sdramc.h>
#ifdef CONFIG_ARCH_AT91SAM9263
/*
* FIXME either or both the SDRAM controllers (EB0, EB1) might be in use;
* handle those cases both here and in the Suspend-To-RAM support.
*/
#define AT91_SDRAMC AT91_SDRAMC0
#warning Assuming EB1 SDRAM controller is *NOT* used
#endif
static u32 saved_lpr;
static inline void sdram_selfrefresh_enable(void)
@ -75,11 +84,6 @@ static inline void sdram_selfrefresh_enable(void)
#define sdram_selfrefresh_disable() at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
/*
* FIXME: The AT91SAM9263 has a second EBI controller which may have
* additional SDRAM. pm_slowclock.S will require a similar fix.
*/
#endif

6
arch/arm/mach-davinci/clock.c
View File

@ -311,11 +311,7 @@ static const struct file_operations proc_davinci_ck_operations = {
static int __init davinci_ck_proc_init(void)
{
struct proc_dir_entry *entry;
entry = create_proc_entry("davinci_clocks", 0, NULL);
if (entry)
entry->proc_fops = &proc_davinci_ck_operations;
proc_create("davinci_clocks", 0, NULL, &proc_davinci_ck_operations);
return 0;
}

3
arch/arm/mach-iop32x/em7210.c
View File

@ -50,8 +50,7 @@ static struct sys_timer em7210_timer = {
*/
static struct i2c_board_info __initdata em7210_i2c_devices[] = {
{
I2C_BOARD_INFO("rtc-rs5c372", 0x32),
.type = "rs5c372a",
I2C_BOARD_INFO("rs5c372a", 0x32),
},
};

4
arch/arm/mach-iop32x/glantank.c
View File

@ -176,12 +176,10 @@ static struct f75375s_platform_data glantank_f75375s = {
static struct i2c_board_info __initdata glantank_i2c_devices[] = {
{
I2C_BOARD_INFO("rtc-rs5c372", 0x32),
.type = "rs5c372a",
I2C_BOARD_INFO("rs5c372a", 0x32),
},
{
I2C_BOARD_INFO("f75375", 0x2e),
.type = "f75375",
.platform_data = &glantank_f75375s,
},
};

4
arch/arm/mach-iop32x/n2100.c
View File

@ -208,12 +208,10 @@ static struct f75375s_platform_data n2100_f75375s = {
static struct i2c_board_info __initdata n2100_i2c_devices[] = {
{
I2C_BOARD_INFO("rtc-rs5c372", 0x32),
.type = "rs5c372b",
I2C_BOARD_INFO("rs5c372b", 0x32),
},
{
I2C_BOARD_INFO("f75375", 0x2e),
.type = "f75375",
.platform_data = &n2100_f75375s,
},
};

2
arch/arm/mach-ixp4xx/dsmg600-setup.c
View File

@ -65,7 +65,7 @@ static struct platform_device dsmg600_i2c_gpio = {
static struct i2c_board_info __initdata dsmg600_i2c_board_info [] = {
{
I2C_BOARD_INFO("rtc-pcf8563", 0x51),
I2C_BOARD_INFO("pcf8563", 0x51),
},
};

4
arch/arm/mach-ixp4xx/ixp4xx_npe.c
View File

@ -448,7 +448,9 @@ int npe_send_message(struct npe *npe, const void *msg, const char *what)
return -ETIMEDOUT;
}
#if DEBUG_MSG > 1
debug_msg(npe, "Sending a message took %i cycles\n", cycles);
#endif
return 0;
}
@ -484,7 +486,9 @@ int npe_recv_message(struct npe *npe, void *msg, const char *what)
return -ETIMEDOUT;
}
#if DEBUG_MSG > 1
debug_msg(npe, "Receiving a message took %i cycles\n", cycles);
#endif
return 0;
}

2
arch/arm/mach-ixp4xx/ixp4xx_qmgr.c
View File

@ -184,6 +184,8 @@ void qmgr_release_queue(unsigned int queue)
case 3: mask[0] = 0xFF; break;
}
mask[1] = mask[2] = mask[3] = 0;
while (addr--)
shift_mask(mask);

2
arch/arm/mach-ixp4xx/nas100d-setup.c
View File

@ -54,7 +54,7 @@ static struct platform_device nas100d_flash = {
static struct i2c_board_info __initdata nas100d_i2c_board_info [] = {
{
I2C_BOARD_INFO("rtc-pcf8563", 0x51),
I2C_BOARD_INFO("pcf8563", 0x51),
},
};

2
arch/arm/mach-ixp4xx/nslu2-setup.c
View File

@ -57,7 +57,7 @@ static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = {
static struct i2c_board_info __initdata nslu2_i2c_board_info [] = {
{
I2C_BOARD_INFO("rtc-x1205", 0x6f),
I2C_BOARD_INFO("x1205", 0x6f),
},
};

2
arch/arm/mach-omap1/board-h2.c
View File

@ -351,11 +351,9 @@ static void __init h2_init_smc91x(void)
static struct i2c_board_info __initdata h2_i2c_board_info[] = {
{
I2C_BOARD_INFO("tps65010", 0x48),
.type = "tps65010",
.irq = OMAP_GPIO_IRQ(58),
}, {
I2C_BOARD_INFO("isp1301_omap", 0x2d),
.type = "isp1301_omap",
.irq = OMAP_GPIO_IRQ(2),
},
};

3
arch/arm/mach-omap1/board-h3.c
View File

@ -473,8 +473,7 @@ static struct omap_board_config_kernel h3_config[] __initdata = {
static struct i2c_board_info __initdata h3_i2c_board_info[] = {
{
I2C_BOARD_INFO("tps65010", 0x48),
.type = "tps65013",
I2C_BOARD_INFO("tps65013", 0x48),
/* .irq = OMAP_GPIO_IRQ(??), */
},
};

1
arch/arm/mach-omap1/board-osk.c
View File

@ -254,7 +254,6 @@ static struct tps65010_board tps_board = {
static struct i2c_board_info __initdata osk_i2c_board_info[] = {
{
I2C_BOARD_INFO("tps65010", 0x48),
.type = "tps65010",
.irq = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
.platform_data = &tps_board,

4
arch/arm/mach-orion5x/addr-map.c
View File

@ -19,14 +19,14 @@
/*
* The Orion has fully programable address map. There's a separate address
* map for each of the device _master_ interfaces, e.g. CPU, PCI, PCIE, USB,
* map for each of the device _master_ interfaces, e.g. CPU, PCI, PCIe, USB,
* Gigabit Ethernet, DMA/XOR engines, etc. Each interface has its own
* address decode windows that allow it to access any of the Orion resources.
*
* CPU address decoding --
* Linux assumes that it is the boot loader that already setup the access to
* DDR and internal registers.
* Setup access to PCI and PCI-E IO/MEM space is issued by this file.
* Setup access to PCI and PCIe IO/MEM space is issued by this file.
* Setup access to various devices located on the device bus interface (e.g.
* flashes, RTC, etc) should be issued by machine-setup.c according to
* specific board population (by using orion5x_setup_*_win()).

6
arch/arm/mach-orion5x/common.c
View File

@ -132,7 +132,7 @@ static struct platform_device orion5x_uart = {
static struct resource orion5x_ehci0_resources[] = {
{
.start = ORION5X_USB0_PHYS_BASE,
.end = ORION5X_USB0_PHYS_BASE + SZ_4K,
.end = ORION5X_USB0_PHYS_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
{
@ -145,7 +145,7 @@ static struct resource orion5x_ehci0_resources[] = {
static struct resource orion5x_ehci1_resources[] = {
{
.start = ORION5X_USB1_PHYS_BASE,
.end = ORION5X_USB1_PHYS_BASE + SZ_4K,
.end = ORION5X_USB1_PHYS_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
{
@ -317,7 +317,7 @@ struct sys_timer orion5x_timer = {
****************************************************************************/
/*
* Identify device ID and rev from PCIE configuration header space '0'.
* Identify device ID and rev from PCIe configuration header space '0'.
*/
static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
{

3
arch/arm/mach-orion5x/common.h
View File

@ -33,10 +33,9 @@ struct pci_sys_data;
struct pci_bus;
void orion5x_pcie_id(u32 *dev, u32 *rev);
int orion5x_pcie_local_bus_nr(void);
int orion5x_pci_local_bus_nr(void);
int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys);
struct pci_bus *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys);
int orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin);
/*
* Valid GPIO pins according to MPP setup, used by machine-setup.

19
arch/arm/mach-orion5x/db88f5281-setup.c
View File

@ -241,14 +241,17 @@ void __init db88f5281_pci_preinit(void)
static int __init db88f5281_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
/*
* PCIE IRQ is connected internally (not GPIO)
*/
if (dev->bus->number == orion5x_pcie_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
int irq;
/*
* PCI IRQs are connected via GPIOs
* Check for devices with hard-wired IRQs.
*/
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
/*
* PCI IRQs are connected via GPIOs.
*/
switch (slot - DB88F5281_PCI_SLOT0_OFFS) {
case 0:
@ -292,9 +295,7 @@ static struct mv643xx_eth_platform_data db88f5281_eth_data = {
* RTC DS1339 on I2C bus
****************************************************************************/
static struct i2c_board_info __initdata db88f5281_i2c_rtc = {
.driver_name = "rtc-ds1307",
.type = "ds1339",
.addr = 0x68,
I2C_BOARD_INFO("ds1339", 0x68),
};
/*****************************************************************************

24
arch/arm/mach-orion5x/dns323-setup.c
View File

@ -43,11 +43,16 @@
static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
/* PCI-E */
if (dev->bus->number == orion5x_pcie_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
int irq;
pr_err("%s: requested mapping for unknown bus\n", __func__);
/*
* Check for devices with hard-wired IRQs.
*/
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
pr_err("%s: requested mapping for unknown device\n", __func__);
return -1;
}
@ -220,19 +225,16 @@ static struct platform_device *dns323_plat_devices[] __initdata = {
static struct i2c_board_info __initdata dns323_i2c_devices[] = {
{
I2C_BOARD_INFO("g760a", 0x3e),
.type = "g760a",
},
#if 0
/* this entry requires the new-style driver model lm75 driver,
* for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
{
I2C_BOARD_INFO("lm75", 0x48),
.type = "g751",
I2C_BOARD_INFO("g751", 0x48),
},
#endif
{
I2C_BOARD_INFO("rtc-m41t80", 0x68),
.type = "m41t80",
I2C_BOARD_INFO("m41t80", 0x68),
}
};
@ -253,9 +255,9 @@ static void __init dns323_init(void)
*/
orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
/* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIE
/* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIe
*
* Open a special address decode windows for the PCIE WA.
* Open a special address decode windows for the PCIe WA.
*/
orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
ORION5X_PCIE_WA_SIZE);

20
arch/arm/mach-orion5x/kurobox_pro-setup.c
View File

@ -120,13 +120,19 @@ static struct platform_device kurobox_pro_nor_flash = {
static int __init kurobox_pro_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
/*
* Check for devices with hard-wired IRQs.
*/
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
/*
* PCI isn't used on the Kuro
*/
if (dev->bus->number == orion5x_pcie_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
else
printk(KERN_ERR "kurobox_pro_pci_map_irq failed, unknown bus\n");
printk(KERN_ERR "kurobox_pro_pci_map_irq failed, unknown bus\n");
return -1;
}
@ -162,9 +168,7 @@ static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
* RTC 5C372a on I2C bus
****************************************************************************/
static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
.driver_name = "rtc-rs5c372",
.type = "rs5c372a",
.addr = 0x32,
I2C_BOARD_INFO("rs5c372a", 0x32),
};
/*****************************************************************************
@ -193,7 +197,7 @@ static void __init kurobox_pro_init(void)
orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE, KUROBOX_PRO_NAND_SIZE);
/*
* Open a special address decode windows for the PCIE WA.
* Open a special address decode windows for the PCIe WA.
*/
orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
ORION5X_PCIE_WA_SIZE);

20
arch/arm/mach-orion5x/pci.c
View File

@ -41,11 +41,6 @@ void __init orion5x_pcie_id(u32 *dev, u32 *rev)
*rev = orion_pcie_rev(PCIE_BASE);
}
int __init orion5x_pcie_local_bus_nr(void)
{
return orion_pcie_get_local_bus_nr(PCIE_BASE);
}
static int pcie_valid_config(int bus, int dev)
{
/*
@ -269,7 +264,7 @@ static int __init pcie_setup(struct pci_sys_data *sys)
*/
static DEFINE_SPINLOCK(orion5x_pci_lock);
int orion5x_pci_local_bus_nr(void)
static int orion5x_pci_local_bus_nr(void)
{
u32 conf = orion5x_read(PCI_P2P_CONF);
return((conf & PCI_P2P_BUS_MASK) >> PCI_P2P_BUS_OFFS);
@ -557,3 +552,16 @@ struct pci_bus __init *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys
return bus;
}
int __init orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
int bus = dev->bus->number;
/*
* PCIe endpoint?
*/
if (bus < orion5x_pci_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
return -1;
}

15
arch/arm/mach-orion5x/rd88f5182-setup.c
View File

@ -172,11 +172,14 @@ void __init rd88f5182_pci_preinit(void)
static int __init rd88f5182_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
/*
* PCI-E isn't used on the RD2
* Check for devices with hard-wired IRQs.
*/
if (dev->bus->number == orion5x_pcie_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
/*
* PCI IRQs are connected via GPIOs
@ -224,9 +227,7 @@ static struct mv643xx_eth_platform_data rd88f5182_eth_data = {
* RTC DS1338 on I2C bus
****************************************************************************/
static struct i2c_board_info __initdata rd88f5182_i2c_rtc = {
.driver_name = "rtc-ds1307",
.type = "ds1338",
.addr = 0x68,
I2C_BOARD_INFO("ds1338", 0x68),
};
/*****************************************************************************
@ -259,7 +260,7 @@ static void __init rd88f5182_init(void)
orion5x_setup_dev1_win(RD88F5182_NOR_BASE, RD88F5182_NOR_SIZE);
/*
* Open a special address decode windows for the PCIE WA.
* Open a special address decode windows for the PCIe WA.
*/
orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
ORION5X_PCIE_WA_SIZE);

20
arch/arm/mach-orion5x/ts209-setup.c
View File

@ -141,14 +141,17 @@ void __init qnap_ts209_pci_preinit(void)
static int __init qnap_ts209_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
/*
* PCIE IRQ is connected internally (not GPIO)
*/
if (dev->bus->number == orion5x_pcie_local_bus_nr())
return IRQ_ORION5X_PCIE0_INT;
int irq;
/*
* PCI IRQs are connected via GPIOs
* Check for devices with hard-wired IRQs.
*/
irq = orion5x_pci_map_irq(dev, slot, pin);
if (irq != -1)
return irq;
/*
* PCI IRQs are connected via GPIOs.
*/
switch (slot - QNAP_TS209_PCI_SLOT0_OFFS) {
case 0:
@ -276,8 +279,7 @@ static void __init ts209_find_mac_addr(void)
#define TS209_RTC_GPIO 3
static struct i2c_board_info __initdata qnap_ts209_i2c_rtc = {
.driver_name = "rtc-s35390a",
.addr = 0x30,
I2C_BOARD_INFO("s35390a", 0x30),
.irq = 0,
};
@ -373,7 +375,7 @@ static void __init qnap_ts209_init(void)
QNAP_TS209_NOR_BOOT_SIZE);
/*
* Open a special address decode windows for the PCIE WA.
* Open a special address decode windows for the PCIe WA.
*/
orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
ORION5X_PCIE_WA_SIZE);

6
arch/arm/mach-pxa/Makefile
View File

@ -5,9 +5,9 @@
# Common support (must be linked before board specific support)
obj-y += clock.o devices.o generic.o irq.o dma.o \
time.o gpio.o
obj-$(CONFIG_PXA25x) += pxa25x.o mfp-pxa2xx.o
obj-$(CONFIG_PXA27x) += pxa27x.o mfp-pxa2xx.o
obj-$(CONFIG_PXA3xx) += pxa3xx.o mfp-pxa3xx.o smemc.o
obj-$(CONFIG_PXA25x) += mfp-pxa2xx.o pxa25x.o
obj-$(CONFIG_PXA27x) += mfp-pxa2xx.o pxa27x.o
obj-$(CONFIG_PXA3xx) += mfp-pxa3xx.o pxa3xx.o smemc.o
obj-$(CONFIG_CPU_PXA300) += pxa300.o
obj-$(CONFIG_CPU_PXA320) += pxa320.o

5
arch/arm/mach-pxa/generic.c
View File

@ -90,11 +90,6 @@ static struct map_desc standard_io_desc[] __initdata = {
.pfn = __phys_to_pfn(0x40000000),
.length = 0x02000000,
.type = MT_DEVICE
}, { /* LCD */
.virtual = 0xf4000000,
.pfn = __phys_to_pfn(0x44000000),
.length = 0x00100000,
.type = MT_DEVICE
}, { /* Mem Ctl */
.virtual = 0xf6000000,
.pfn = __phys_to_pfn(0x48000000),

1
arch/arm/mach-pxa/gumstix.c
View File

@ -40,6 +40,7 @@
#include <asm/arch/pxa-regs.h>
#include <asm/arch/pxa2xx-regs.h>
#include <asm/arch/pxa2xx-gpio.h>
#include "generic.h"

3
arch/arm/mach-pxa/littleton.c
View File

@ -301,8 +301,7 @@ static struct pxafb_mode_info tpo_tdo24mtea1_modes[] = {
static struct pxafb_mach_info littleton_lcd_info = {
.modes = tpo_tdo24mtea1_modes,
.num_modes = 2,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_HSP | LCCR3_VSP,
.lcd_conn = LCD_COLOR_TFT_16BPP,
.pxafb_lcd_power = littleton_lcd_power,
};

4
arch/arm/mach-pxa/lubbock.c
View File

@ -395,8 +395,8 @@ static struct pxafb_mach_info sharp_lm8v31 = {
.num_modes = 1,
.cmap_inverse = 0,
.cmap_static = 0,
.lccr0 = LCCR0_SDS,
.lccr3 = LCCR3_PCP | LCCR3_Acb(255),
.lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
LCD_AC_BIAS_FREQ(255);
};
#define MMC_POLL_RATE msecs_to_jiffies(1000)

61
arch/arm/mach-pxa/magician.c
View File

@ -114,6 +114,14 @@ static unsigned long magician_pin_config[] = {
GPIO82_CIF_DD_5,
GPIO84_CIF_FV,
GPIO85_CIF_LV,
/* Magician specific input GPIOs */
GPIO9_GPIO, /* unknown */
GPIO10_GPIO, /* GSM_IRQ */
GPIO13_GPIO, /* CPLD_IRQ */
GPIO107_GPIO, /* DS1WM_IRQ */
GPIO108_GPIO, /* GSM_READY */
GPIO115_GPIO, /* nPEN_IRQ */
};
/*
@ -438,7 +446,7 @@ static struct pasic3_led pasic3_leds[] = {
static struct platform_device pasic3;
static struct pasic3_leds_machinfo __devinit pasic3_leds_info = {
static struct pasic3_leds_machinfo pasic3_leds_info = {
.num_leds = ARRAY_SIZE(pasic3_leds),
.power_gpio = EGPIO_MAGICIAN_LED_POWER,
.leds = pasic3_leds,
@ -543,9 +551,28 @@ static struct platform_device power_supply = {
static int magician_mci_init(struct device *dev,
irq_handler_t detect_irq, void *data)
{
return request_irq(IRQ_MAGICIAN_SD, detect_irq,
int err;
err = request_irq(IRQ_MAGICIAN_SD, detect_irq,
IRQF_DISABLED | IRQF_SAMPLE_RANDOM,
"MMC card detect", data);
if (err)
goto err_request_irq;
err = gpio_request(EGPIO_MAGICIAN_SD_POWER, "SD_POWER");
if (err)
goto err_request_power;
err = gpio_request(EGPIO_MAGICIAN_nSD_READONLY, "nSD_READONLY");
if (err)
goto err_request_readonly;
return 0;
err_request_readonly:
gpio_free(EGPIO_MAGICIAN_SD_POWER);
err_request_power:
free_irq(IRQ_MAGICIAN_SD, data);
err_request_irq:
return err;
}
static void magician_mci_setpower(struct device *dev, unsigned int vdd)
@ -562,6 +589,8 @@ static int magician_mci_get_ro(struct device *dev)
static void magician_mci_exit(struct device *dev, void *data)
{
gpio_free(EGPIO_MAGICIAN_nSD_READONLY);
gpio_free(EGPIO_MAGICIAN_SD_POWER);
free_irq(IRQ_MAGICIAN_SD, data);
}
@ -643,28 +672,42 @@ static void __init magician_init(void)
{
void __iomem *cpld;
int lcd_select;
int err;
gpio_request(GPIO13_MAGICIAN_CPLD_IRQ, "CPLD_IRQ");
gpio_request(GPIO107_MAGICIAN_DS1WM_IRQ, "DS1WM_IRQ");
pxa2xx_mfp_config(ARRAY_AND_SIZE(magician_pin_config));
platform_add_devices(devices, ARRAY_SIZE(devices));
err = gpio_request(GPIO83_MAGICIAN_nIR_EN, "nIR_EN");
if (!err) {
gpio_direction_output(GPIO83_MAGICIAN_nIR_EN, 1);
pxa_set_ficp_info(&magician_ficp_info);
}
pxa_set_i2c_info(NULL);
pxa_set_mci_info(&magician_mci_info);
pxa_set_ohci_info(&magician_ohci_info);
pxa_set_ficp_info(&magician_ficp_info);
/* Check LCD type we have */
cpld = ioremap_nocache(PXA_CS3_PHYS, 0x1000);
if (cpld) {
u8 board_id = __raw_readb(cpld+0x14);
iounmap(cpld);
system_rev = board_id & 0x7;
lcd_select = board_id & 0x8;
iounmap(cpld);
pr_info("LCD type: %s\n", lcd_select ? "Samsung" : "Toppoly");
if (lcd_select && (system_rev < 3))
pxa_gpio_mode(GPIO75_MAGICIAN_SAMSUNG_POWER_MD);
pxa_gpio_mode(GPIO104_MAGICIAN_LCD_POWER_1_MD);
pxa_gpio_mode(GPIO105_MAGICIAN_LCD_POWER_2_MD);
pxa_gpio_mode(GPIO106_MAGICIAN_LCD_POWER_3_MD);
if (lcd_select && (system_rev < 3)) {
gpio_request(GPIO75_MAGICIAN_SAMSUNG_POWER, "SAMSUNG_POWER");
gpio_direction_output(GPIO75_MAGICIAN_SAMSUNG_POWER, 0);
}
gpio_request(GPIO104_MAGICIAN_LCD_POWER_1, "LCD_POWER_1");
gpio_request(GPIO105_MAGICIAN_LCD_POWER_2, "LCD_POWER_2");
gpio_request(GPIO106_MAGICIAN_LCD_POWER_3, "LCD_POWER_3");
gpio_direction_output(GPIO104_MAGICIAN_LCD_POWER_1, 0);
gpio_direction_output(GPIO105_MAGICIAN_LCD_POWER_2, 0);
gpio_direction_output(GPIO106_MAGICIAN_LCD_POWER_3, 0);
set_pxa_fb_info(lcd_select ? &samsung_info : &toppoly_info);
} else
pr_err("LCD detection: CPLD mapping failed\n");

3
arch/arm/mach-pxa/mainstone.c
View File

@ -434,8 +434,7 @@ static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
static struct pxafb_mach_info mainstone_pxafb_info = {
.num_modes = 1,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)

5
arch/arm/mach-pxa/pcm990-baseboard.c
View File

@ -320,16 +320,13 @@ static struct soc_camera_link iclink[] = {
static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
{
/* Must initialize before the camera(s) */
I2C_BOARD_INFO("pca953x", 0x41),
.type = "pca9536",
I2C_BOARD_INFO("pca9536", 0x41),
.platform_data = &pca9536_data,
}, {
I2C_BOARD_INFO("mt9v022", 0x48),
.type = "mt9v022",
.platform_data = &iclink[0], /* With extender */
}, {
I2C_BOARD_INFO("mt9m001", 0x5d),
.type = "mt9m001",
.platform_data = &iclink[0], /* With extender */
},
};

4
arch/arm/mach-pxa/pm.c
View File

@ -46,8 +46,8 @@ int pxa_pm_enter(suspend_state_t state)
sleep_save_checksum += sleep_save[i];
}
/* Clear sleep reset status */
RCSR = RCSR_SMR;
/* Clear reset status */
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
/* *** go zzz *** */
pxa_cpu_pm_fns->enter(state);

2
arch/arm/mach-pxa/pxa3xx.c
View File

@ -486,6 +486,8 @@ static int pxa3xx_set_wake(unsigned int irq, unsigned int on)
case IRQ_MMC3:
mask = ADXER_MFP_GEN12;
break;
default:
return -EINVAL;
}
local_irq_save(flags);

6
arch/arm/mach-pxa/zylonite.c
View File

@ -97,8 +97,7 @@ static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
static struct pxafb_mach_info zylonite_toshiba_lcd_info = {
.num_modes = 1,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
.pxafb_backlight_power = zylonite_backlight_power,
};
@ -134,8 +133,7 @@ static struct pxafb_mode_info sharp_ls037_modes[] = {
static struct pxafb_mach_info zylonite_sharp_lcd_info = {
.modes = sharp_ls037_modes,
.num_modes = 2,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP | LCCR3_HSP | LCCR3_VSP,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
.pxafb_backlight_power = zylonite_backlight_power,
};

7
arch/arm/mm/Kconfig
View File

@ -372,7 +372,7 @@ config CPU_FEROCEON
select CPU_PABRT_NOIFAR
select CPU_CACHE_VIVT
select CPU_CP15_MMU
select CPU_COPY_V4WB if MMU
select CPU_COPY_FEROCEON if MMU
select CPU_TLB_V4WBI if MMU
config CPU_FEROCEON_OLD_ID
@ -523,6 +523,9 @@ config CPU_COPY_V4WT
config CPU_COPY_V4WB
bool
config CPU_COPY_FEROCEON
bool
config CPU_COPY_V6
bool
@ -658,7 +661,7 @@ config CPU_DCACHE_SIZE
config CPU_DCACHE_WRITETHROUGH
bool "Force write through D-cache"
depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_FEROCEON) && !CPU_DCACHE_DISABLE
depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE
default y if CPU_ARM925T
help
Say Y here to use the data cache in writethrough mode. Unless you

1
arch/arm/mm/Makefile
View File

@ -36,6 +36,7 @@ obj-$(CONFIG_CPU_CACHE_V7) += cache-v7.o
obj-$(CONFIG_CPU_COPY_V3) += copypage-v3.o
obj-$(CONFIG_CPU_COPY_V4WT) += copypage-v4wt.o
obj-$(CONFIG_CPU_COPY_V4WB) += copypage-v4wb.o
obj-$(CONFIG_CPU_COPY_FEROCEON) += copypage-feroceon.o
obj-$(CONFIG_CPU_COPY_V6) += copypage-v6.o context.o
obj-$(CONFIG_CPU_SA1100) += copypage-v4mc.o
obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o

95
arch/arm/mm/copypage-feroceon.S Normal file
View File

@ -0,0 +1,95 @@
/*
* linux/arch/arm/lib/copypage-feroceon.S
*
* Copyright (C) 2008 Marvell Semiconductors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This handles copy_user_page and clear_user_page on Feroceon
* more optimally than the generic implementations.
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/asm-offsets.h>
.text
.align 5
ENTRY(feroceon_copy_user_page)
stmfd sp!, {r4-r9, lr}
mov ip, #PAGE_SZ
1: mov lr, r1
ldmia r1!, {r2 - r9}
pld [lr, #32]
pld [lr, #64]
pld [lr, #96]
pld [lr, #128]
pld [lr, #160]
pld [lr, #192]
pld [lr, #224]
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
ldmia r1!, {r2 - r9}
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
stmia r0, {r2 - r9}
subs ip, ip, #(32 * 8)
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
bne 1b
mcr p15, 0, ip, c7, c10, 4 @ drain WB
ldmfd sp!, {r4-r9, pc}
.align 5
ENTRY(feroceon_clear_user_page)
stmfd sp!, {r4-r7, lr}
mov r1, #PAGE_SZ/32
mov r2, #0
mov r3, #0
mov r4, #0
mov r5, #0
mov r6, #0
mov r7, #0
mov ip, #0
mov lr, #0
1: stmia r0, {r2-r7, ip, lr}
subs r1, r1, #1
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D line
add r0, r0, #32
bne 1b
mcr p15, 0, r1, c7, c10, 4 @ drain WB
ldmfd sp!, {r4-r7, pc}
__INITDATA
.type feroceon_user_fns, #object
ENTRY(feroceon_user_fns)
.long feroceon_clear_user_page
.long feroceon_copy_user_page
.size feroceon_user_fns, . - feroceon_user_fns

4
arch/arm/mm/iomap.c
View File

@ -26,8 +26,8 @@ EXPORT_SYMBOL(ioport_unmap);
#ifdef CONFIG_PCI
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
{
unsigned long start = pci_resource_start(dev, bar);
unsigned long len = pci_resource_len(dev, bar);
resource_size_t start = pci_resource_start(dev, bar);
resource_size_t len = pci_resource_len(dev, bar);
unsigned long flags = pci_resource_flags(dev, bar);
if (!len || !start)

1
arch/arm/mm/mmu.c
View File

@ -35,6 +35,7 @@ extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
* zero-initialized data and COW.
*/
struct page *empty_zero_page;
EXPORT_SYMBOL(empty_zero_page);
/*
* The pmd table for the upper-most set of pages.

60
arch/arm/mm/proc-feroceon.S
View File

@ -93,7 +93,7 @@ ENTRY(cpu_feroceon_reset)
*
* Called with IRQs disabled
*/
.align 10
.align 5
ENTRY(cpu_feroceon_do_idle)
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer
@ -106,6 +106,7 @@ ENTRY(cpu_feroceon_do_idle)
* Clean and invalidate all cache entries in a particular
* address space.
*/
.align 5
ENTRY(feroceon_flush_user_cache_all)
/* FALLTHROUGH */
@ -118,12 +119,8 @@ ENTRY(feroceon_flush_kern_cache_all)
mov r2, #VM_EXEC
mov ip, #0
__flush_whole_cache:
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
#else
1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate
bne 1b
#endif
tst r2, #VM_EXEC
mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache
mcrne p15, 0, ip, c7, c10, 4 @ drain WB
@ -139,27 +136,19 @@ __flush_whole_cache:
* - end - end address (exclusive)
* - flags - vm_flags describing address space
*/
.align 5
ENTRY(feroceon_flush_user_cache_range)
mov ip, #0
sub r3, r1, r0 @ calculate total size
cmp r3, #CACHE_DLIMIT
bgt __flush_whole_cache
1: tst r2, #VM_EXEC
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry
add r0, r0, #CACHE_DLINESIZE
mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry
add r0, r0, #CACHE_DLINESIZE
#else
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry
mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry
add r0, r0, #CACHE_DLINESIZE
mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry
mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry
add r0, r0, #CACHE_DLINESIZE
#endif
cmp r0, r1
blo 1b
tst r2, #VM_EXEC
@ -176,6 +165,7 @@ ENTRY(feroceon_flush_user_cache_range)
* - start - virtual start address
* - end - virtual end address
*/
.align 5
ENTRY(feroceon_coherent_kern_range)
/* FALLTHROUGH */
@ -207,6 +197,7 @@ ENTRY(feroceon_coherent_user_range)
*
* - addr - page aligned address
*/
.align 5
ENTRY(feroceon_flush_kern_dcache_page)
add r1, r0, #PAGE_SZ
1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
@ -231,13 +222,12 @@ ENTRY(feroceon_flush_kern_dcache_page)
*
* (same as v4wb)
*/
.align 5
ENTRY(feroceon_dma_inv_range)
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
tst r0, #CACHE_DLINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
tst r1, #CACHE_DLINESIZE - 1
mcrne p15, 0, r1, c7, c10, 1 @ clean D entry
#endif
bic r0, r0, #CACHE_DLINESIZE - 1
1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
add r0, r0, #CACHE_DLINESIZE
@ -256,14 +246,13 @@ ENTRY(feroceon_dma_inv_range)
*
* (same as v4wb)
*/
.align 5
ENTRY(feroceon_dma_clean_range)
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
bic r0, r0, #CACHE_DLINESIZE - 1
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1
blo 1b
#endif
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
@ -275,14 +264,10 @@ ENTRY(feroceon_dma_clean_range)
* - start - virtual start address
* - end - virtual end address
*/
.align 5
ENTRY(feroceon_dma_flush_range)
bic r0, r0, #CACHE_DLINESIZE - 1
1:
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
#else
mcr p15, 0, r0, c7, c10, 1 @ clean D entry
#endif
1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1
blo 1b
@ -300,13 +285,12 @@ ENTRY(feroceon_cache_fns)
.long feroceon_dma_clean_range
.long feroceon_dma_flush_range
.align 5
ENTRY(cpu_feroceon_dcache_clean_area)
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHE_DLINESIZE
subs r1, r1, #CACHE_DLINESIZE
bhi 1b
#endif
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
@ -323,13 +307,9 @@ ENTRY(cpu_feroceon_dcache_clean_area)
ENTRY(cpu_feroceon_switch_mm)
#ifdef CONFIG_MMU
mov ip, #0
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache
#else
@ && 'Clean & Invalidate whole DCache'
1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate
bne 1b
#endif
mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
mcr p15, 0, ip, c7, c10, 4 @ drain WB
mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
@ -362,16 +342,9 @@ ENTRY(cpu_feroceon_set_pte_ext)
tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young?
movne r2, #0
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
eor r3, r2, #0x0a @ C & small page?
tst r3, #0x0b
biceq r2, r2, #4
#endif
str r2, [r0] @ hardware version
mov r0, r0
#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH
mcr p15, 0, r0, c7, c10, 1 @ clean D entry
#endif
mcr p15, 0, r0, c7, c10, 4 @ drain WB
#endif
mov pc, lr
@ -387,20 +360,11 @@ __feroceon_setup:
mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4
#endif
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
mov r0, #4 @ disable write-back on caches explicitly
mcr p15, 7, r0, c15, c0, 0
#endif
adr r5, feroceon_crval
ldmia r5, {r5, r6}
mrc p15, 0, r0, c1, c0 @ get control register v4
bic r0, r0, r5
orr r0, r0, r6
#ifdef CONFIG_CPU_CACHE_ROUND_ROBIN
orr r0, r0, #0x4000 @ .1.. .... .... ....
#endif
mov pc, lr
.size __feroceon_setup, . - __feroceon_setup
@ -476,7 +440,7 @@ __feroceon_old_id_proc_info:
.long cpu_feroceon_name
.long feroceon_processor_functions
.long v4wbi_tlb_fns
.long v4wb_user_fns
.long feroceon_user_fns
.long feroceon_cache_fns
.size __feroceon_old_id_proc_info, . - __feroceon_old_id_proc_info
#endif
@ -502,6 +466,6 @@ __feroceon_proc_info:
.long cpu_feroceon_name
.long feroceon_processor_functions
.long v4wbi_tlb_fns
.long v4wb_user_fns
.long feroceon_user_fns
.long feroceon_cache_fns
.size __feroceon_proc_info, . - __feroceon_proc_info

44
arch/arm/oprofile/op_model_mpcore.c
View File

@ -51,7 +51,7 @@
/*
* MPCore SCU event monitor support
*/
#define SCU_EVENTMONITORS_VA_BASE __io_address(REALVIEW_MPCORE_SCU_BASE + 0x10)
#define SCU_EVENTMONITORS_VA_BASE __io_address(REALVIEW_EB11MP_SCU_BASE + 0x10)
/*
* Bitmask of used SCU counters
@ -80,7 +80,7 @@ static irqreturn_t scu_em_interrupt(int irq, void *arg)
struct eventmonitor __iomem *emc = SCU_EVENTMONITORS_VA_BASE;
unsigned int cnt;
cnt = irq - IRQ_PMU_SCU0;
cnt = irq - IRQ_EB11MP_PMU_SCU0;
oprofile_add_sample(get_irq_regs(), SCU_COUNTER(cnt));
scu_reset_counter(emc, cnt);
@ -119,10 +119,10 @@ static int scu_start(void)
*/
for (i = 0; i < NUM_SCU_COUNTERS; i++) {
if (scu_em_used & (1 << i)) {
ret = request_irq(IRQ_PMU_SCU0 + i, scu_em_interrupt, IRQF_DISABLED, "SCU PMU", NULL);
ret = request_irq(IRQ_EB11MP_PMU_SCU0 + i, scu_em_interrupt, IRQF_DISABLED, "SCU PMU", NULL);
if (ret) {
printk(KERN_ERR "oprofile: unable to request IRQ%u for SCU Event Monitor\n",
IRQ_PMU_SCU0 + i);
IRQ_EB11MP_PMU_SCU0 + i);
goto err_free_scu;
}
}
@ -153,7 +153,7 @@ static int scu_start(void)
err_free_scu:
while (i--)
free_irq(IRQ_PMU_SCU0 + i, NULL);
free_irq(IRQ_EB11MP_PMU_SCU0 + i, NULL);
return ret;
}
@ -175,7 +175,7 @@ static void scu_stop(void)
for (i = 0; i < NUM_SCU_COUNTERS; i++) {
if (scu_em_used & (1 << i)) {
scu_reset_counter(emc, i);
free_irq(IRQ_PMU_SCU0 + i, NULL);
free_irq(IRQ_EB11MP_PMU_SCU0 + i, NULL);
}
}
}
@ -225,10 +225,10 @@ static int em_setup_ctrs(void)
}
static int arm11_irqs[] = {
[0] = IRQ_PMU_CPU0,
[1] = IRQ_PMU_CPU1,
[2] = IRQ_PMU_CPU2,
[3] = IRQ_PMU_CPU3
[0] = IRQ_EB11MP_PMU_CPU0,
[1] = IRQ_EB11MP_PMU_CPU1,
[2] = IRQ_EB11MP_PMU_CPU2,
[3] = IRQ_EB11MP_PMU_CPU3
};
static int em_start(void)
@ -273,22 +273,22 @@ static int em_setup(void)
/*
* Send SCU PMU interrupts to the "owner" CPU.
*/
em_route_irq(IRQ_PMU_SCU0, 0);
em_route_irq(IRQ_PMU_SCU1, 0);
em_route_irq(IRQ_PMU_SCU2, 1);
em_route_irq(IRQ_PMU_SCU3, 1);
em_route_irq(IRQ_PMU_SCU4, 2);
em_route_irq(IRQ_PMU_SCU5, 2);
em_route_irq(IRQ_PMU_SCU6, 3);
em_route_irq(IRQ_PMU_SCU7, 3);
em_route_irq(IRQ_EB11MP_PMU_SCU0, 0);
em_route_irq(IRQ_EB11MP_PMU_SCU1, 0);
em_route_irq(IRQ_EB11MP_PMU_SCU2, 1);
em_route_irq(IRQ_EB11MP_PMU_SCU3, 1);
em_route_irq(IRQ_EB11MP_PMU_SCU4, 2);
em_route_irq(IRQ_EB11MP_PMU_SCU5, 2);
em_route_irq(IRQ_EB11MP_PMU_SCU6, 3);
em_route_irq(IRQ_EB11MP_PMU_SCU7, 3);
/*
* Send CP15 PMU interrupts to the owner CPU.
*/
em_route_irq(IRQ_PMU_CPU0, 0);
em_route_irq(IRQ_PMU_CPU1, 1);
em_route_irq(IRQ_PMU_CPU2, 2);
em_route_irq(IRQ_PMU_CPU3, 3);
em_route_irq(IRQ_EB11MP_PMU_CPU0, 0);
em_route_irq(IRQ_EB11MP_PMU_CPU1, 1);
em_route_irq(IRQ_EB11MP_PMU_CPU2, 2);
em_route_irq(IRQ_EB11MP_PMU_CPU3, 3);
return 0;
}

9
arch/avr32/kernel/asm-offsets.c
View File

@ -5,14 +5,7 @@
*/
#include <linux/thread_info.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
#define OFFSET(sym, str, mem) \
DEFINE(sym, offsetof(struct str, mem));
#include <linux/kbuild.h>
void foo(void)
{

13
arch/avr32/kernel/sys_avr32.c
View File

@ -14,19 +14,6 @@
#include <asm/mman.h>
#include <asm/uaccess.h>
asmlinkage int sys_pipe(unsigned long __user *filedes)
{
int fd[2];
int error;
error = do_pipe(fd);
if (!error) {
if (copy_to_user(filedes, fd, sizeof(fd)))
error = -EFAULT;
}
return error;
}
asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, off_t offset)

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