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authorJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-11-22 12:06:44 -0600
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-11-22 12:06:44 -0600
commit0bd2af46839ad6262d25714a6ec0365db9d6b98f (patch)
treedcced72d230d69fd0c5816ac6dd03ab84799a93e /Documentation
parente138a5d2356729b8752e88520cc1525fae9794ac (diff)
parentf26b90440cd74c78fe10c9bd5160809704a9627c (diff)
downloadlinux-linaro-stable-0bd2af46839ad6262d25714a6ec0365db9d6b98f.tar.gz
Merge ../scsi-rc-fixes-2.6
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-power17
-rw-r--r--Documentation/DocBook/Makefile2
-rw-r--r--Documentation/DocBook/filesystems.tmpl (renamed from Documentation/DocBook/journal-api.tmpl)252
-rw-r--r--Documentation/DocBook/kernel-api.tmpl60
-rw-r--r--Documentation/HOWTO20
-rw-r--r--Documentation/MSI-HOWTO.txt63
-rw-r--r--Documentation/accounting/getdelays.c2
-rw-r--r--Documentation/cpu-hotplug.txt148
-rw-r--r--Documentation/feature-removal-schedule.txt14
-rw-r--r--Documentation/filesystems/00-INDEX2
-rw-r--r--Documentation/filesystems/ext4.txt236
-rw-r--r--Documentation/filesystems/udf.txt13
-rw-r--r--Documentation/hwmon/adm92402
-rw-r--r--Documentation/hwmon/f71805f2
-rw-r--r--Documentation/hwmon/k8temp13
-rw-r--r--Documentation/hwmon/smsc47m14
-rw-r--r--Documentation/hwmon/w83627ehf6
-rw-r--r--Documentation/ibm-acpi.txt75
-rw-r--r--Documentation/input/xpad.txt115
-rw-r--r--Documentation/kernel-doc-nano-HOWTO.txt2
-rw-r--r--Documentation/kernel-parameters.txt9
-rw-r--r--Documentation/kprobes.txt5
-rw-r--r--Documentation/lockdep-design.txt6
-rw-r--r--Documentation/memory-barriers.txt4
-rw-r--r--Documentation/mips/time.README49
-rw-r--r--Documentation/power/interface.txt13
-rw-r--r--Documentation/s390/CommonIO2
-rw-r--r--Documentation/s390/cds.txt52
-rw-r--r--Documentation/s390/driver-model.txt3
-rw-r--r--Documentation/sound/alsa/ALSA-Configuration.txt2
-rw-r--r--Documentation/sysctl/kernel.txt5
-rw-r--r--Documentation/usb/usb-serial.txt6
-rw-r--r--Documentation/video4linux/CARDLIST.cx882
-rw-r--r--Documentation/watchdog/src/watchdog-simple.c2
34 files changed, 796 insertions, 412 deletions
diff --git a/Documentation/ABI/testing/sysfs-power b/Documentation/ABI/testing/sysfs-power
index d882f8093871..dcff4d0623ad 100644
--- a/Documentation/ABI/testing/sysfs-power
+++ b/Documentation/ABI/testing/sysfs-power
@@ -21,7 +21,7 @@ Description:
these states.
What: /sys/power/disk
-Date: August 2006
+Date: September 2006
Contact: Rafael J. Wysocki <rjw@sisk.pl>
Description:
The /sys/power/disk file controls the operating mode of the
@@ -39,6 +39,19 @@ Description:
'reboot' - the memory image will be saved by the kernel and
the system will be rebooted.
+ Additionally, /sys/power/disk can be used to turn on one of the
+ two testing modes of the suspend-to-disk mechanism: 'testproc'
+ or 'test'. If the suspend-to-disk mechanism is in the
+ 'testproc' mode, writing 'disk' to /sys/power/state will cause
+ the kernel to disable nonboot CPUs and freeze tasks, wait for 5
+ seconds, unfreeze tasks and enable nonboot CPUs. If it is in
+ the 'test' mode, writing 'disk' to /sys/power/state will cause
+ the kernel to disable nonboot CPUs and freeze tasks, shrink
+ memory, suspend devices, wait for 5 seconds, resume devices,
+ unfreeze tasks and enable nonboot CPUs. Then, we are able to
+ look in the log messages and work out, for example, which code
+ is being slow and which device drivers are misbehaving.
+
The suspend-to-disk method may be chosen by writing to this
file one of the accepted strings:
@@ -46,6 +59,8 @@ Description:
'platform'
'shutdown'
'reboot'
+ 'testproc'
+ 'test'
It will only change to 'firmware' or 'platform' if the system
supports that.
diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 66e1cf733571..db9499adbed4 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -9,7 +9,7 @@
DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
procfs-guide.xml writing_usb_driver.xml \
- kernel-api.xml journal-api.xml lsm.xml usb.xml \
+ kernel-api.xml filesystems.xml lsm.xml usb.xml \
gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
genericirq.xml
diff --git a/Documentation/DocBook/journal-api.tmpl b/Documentation/DocBook/filesystems.tmpl
index 2077f9a28c19..39fa2aba7f9b 100644
--- a/Documentation/DocBook/journal-api.tmpl
+++ b/Documentation/DocBook/filesystems.tmpl
@@ -2,39 +2,11 @@
<!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="LinuxJBDAPI">
+<book id="Linux-filesystems-API">
<bookinfo>
- <title>The Linux Journalling API</title>
- <authorgroup>
- <author>
- <firstname>Roger</firstname>
- <surname>Gammans</surname>
- <affiliation>
- <address>
- <email>rgammans@computer-surgery.co.uk</email>
- </address>
- </affiliation>
- </author>
- </authorgroup>
-
- <authorgroup>
- <author>
- <firstname>Stephen</firstname>
- <surname>Tweedie</surname>
- <affiliation>
- <address>
- <email>sct@redhat.com</email>
- </address>
- </affiliation>
- </author>
- </authorgroup>
+ <title>Linux Filesystems API</title>
- <copyright>
- <year>2002</year>
- <holder>Roger Gammans</holder>
- </copyright>
-
-<legalnotice>
+ <legalnotice>
<para>
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
@@ -42,21 +14,21 @@
version 2 of the License, or (at your option) any later
version.
</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.
@@ -66,17 +38,113 @@
<toc></toc>
- <chapter id="Overview">
+ <chapter id="vfs">
+ <title>The Linux VFS</title>
+ <sect1><title>The Filesystem types</title>
+!Iinclude/linux/fs.h
+ </sect1>
+ <sect1><title>The Directory Cache</title>
+!Efs/dcache.c
+!Iinclude/linux/dcache.h
+ </sect1>
+ <sect1><title>Inode Handling</title>
+!Efs/inode.c
+!Efs/bad_inode.c
+ </sect1>
+ <sect1><title>Registration and Superblocks</title>
+!Efs/super.c
+ </sect1>
+ <sect1><title>File Locks</title>
+!Efs/locks.c
+!Ifs/locks.c
+ </sect1>
+ <sect1><title>Other Functions</title>
+!Efs/mpage.c
+!Efs/namei.c
+!Efs/buffer.c
+!Efs/bio.c
+!Efs/seq_file.c
+!Efs/filesystems.c
+!Efs/fs-writeback.c
+!Efs/block_dev.c
+ </sect1>
+ </chapter>
+
+ <chapter id="proc">
+ <title>The proc filesystem</title>
+
+ <sect1><title>sysctl interface</title>
+!Ekernel/sysctl.c
+ </sect1>
+
+ <sect1><title>proc filesystem interface</title>
+!Ifs/proc/base.c
+ </sect1>
+ </chapter>
+
+ <chapter id="sysfs">
+ <title>The Filesystem for Exporting Kernel Objects</title>
+!Efs/sysfs/file.c
+!Efs/sysfs/symlink.c
+!Efs/sysfs/bin.c
+ </chapter>
+
+ <chapter id="debugfs">
+ <title>The debugfs filesystem</title>
+
+ <sect1><title>debugfs interface</title>
+!Efs/debugfs/inode.c
+!Efs/debugfs/file.c
+ </sect1>
+ </chapter>
+
+ <chapter id="LinuxJDBAPI">
+ <chapterinfo>
+ <title>The Linux Journalling API</title>
+
+ <authorgroup>
+ <author>
+ <firstname>Roger</firstname>
+ <surname>Gammans</surname>
+ <affiliation>
+ <address>
+ <email>rgammans@computer-surgery.co.uk</email>
+ </address>
+ </affiliation>
+ </author>
+ </authorgroup>
+
+ <authorgroup>
+ <author>
+ <firstname>Stephen</firstname>
+ <surname>Tweedie</surname>
+ <affiliation>
+ <address>
+ <email>sct@redhat.com</email>
+ </address>
+ </affiliation>
+ </author>
+ </authorgroup>
+
+ <copyright>
+ <year>2002</year>
+ <holder>Roger Gammans</holder>
+ </copyright>
+ </chapterinfo>
+
+ <title>The Linux Journalling API</title>
+
+ <sect1>
<title>Overview</title>
- <sect1>
+ <sect2>
<title>Details</title>
<para>
-The journalling layer is easy to use. You need to
+The journalling layer is easy to use. You need to
first of all create a journal_t data structure. There are
two calls to do this dependent on how you decide to allocate the physical
-media on which the journal resides. The journal_init_inode() call
+media on which the journal resides. The journal_init_inode() call
is for journals stored in filesystem inodes, or the journal_init_dev()
-call can be use for journal stored on a raw device (in a continuous range
+call can be use for journal stored on a raw device (in a continuous range
of blocks). A journal_t is a typedef for a struct pointer, so when
you are finally finished make sure you call journal_destroy() on it
to free up any used kernel memory.
@@ -91,27 +159,26 @@ need to call journal_create().
<para>
Most of the time however your journal file will already have been created, but
before you load it you must call journal_wipe() to empty the journal file.
-Hang on, you say , what if the filesystem wasn't cleanly umount()'d . Well, it is the
+Hang on, you say , what if the filesystem wasn't cleanly umount()'d . Well, it is the
job of the client file system to detect this and skip the call to journal_wipe().
</para>
<para>
In either case the next call should be to journal_load() which prepares the
-journal file for use. Note that journal_wipe(..,0) calls journal_skip_recovery()
+journal file for use. Note that journal_wipe(..,0) calls journal_skip_recovery()
for you if it detects any outstanding transactions in the journal and similarly
journal_load() will call journal_recover() if necessary.
I would advise reading fs/ext3/super.c for examples on this stage.
-[RGG: Why is the journal_wipe() call necessary - doesn't this needlessly
-complicate the API. Or isn't a good idea for the journal layer to hide
+[RGG: Why is the journal_wipe() call necessary - doesn't this needlessly
+complicate the API. Or isn't a good idea for the journal layer to hide
dirty mounts from the client fs]
</para>
<para>
-Now you can go ahead and start modifying the underlying
+Now you can go ahead and start modifying the underlying
filesystem. Almost.
</para>
-
<para>
You still need to actually journal your filesystem changes, this
@@ -138,10 +205,10 @@ individual buffers (blocks). Before you start to modify a buffer you
need to call journal_get_{create,write,undo}_access() as appropriate,
this allows the journalling layer to copy the unmodified data if it
needs to. After all the buffer may be part of a previously uncommitted
-transaction.
+transaction.
At this point you are at last ready to modify a buffer, and once
you are have done so you need to call journal_dirty_{meta,}data().
-Or if you've asked for access to a buffer you now know is now longer
+Or if you've asked for access to a buffer you now know is now longer
required to be pushed back on the device you can call journal_forget()
in much the same way as you might have used bforget() in the past.
</para>
@@ -156,7 +223,6 @@ Then at umount time , in your put_super() (2.4) or write_super() (2.5)
you can then call journal_destroy() to clean up your in-core journal object.
</para>
-
<para>
Unfortunately there a couple of ways the journal layer can cause a deadlock.
The first thing to note is that each task can only have
@@ -164,19 +230,19 @@ a single outstanding transaction at any one time, remember nothing
commits until the outermost journal_stop(). This means
you must complete the transaction at the end of each file/inode/address
etc. operation you perform, so that the journalling system isn't re-entered
-on another journal. Since transactions can't be nested/batched
+on another journal. Since transactions can't be nested/batched
across differing journals, and another filesystem other than
yours (say ext3) may be modified in a later syscall.
</para>
<para>
-The second case to bear in mind is that journal_start() can
-block if there isn't enough space in the journal for your transaction
+The second case to bear in mind is that journal_start() can
+block if there isn't enough space in the journal for your transaction
(based on the passed nblocks param) - when it blocks it merely(!) needs to
-wait for transactions to complete and be committed from other tasks,
-so essentially we are waiting for journal_stop(). So to avoid
+wait for transactions to complete and be committed from other tasks,
+so essentially we are waiting for journal_stop(). So to avoid
deadlocks you must treat journal_start/stop() as if they
-were semaphores and include them in your semaphore ordering rules to prevent
+were semaphores and include them in your semaphore ordering rules to prevent
deadlocks. Note that journal_extend() has similar blocking behaviour to
journal_start() so you can deadlock here just as easily as on journal_start().
</para>
@@ -184,7 +250,7 @@ journal_start() so you can deadlock here just as easily as on journal_start().
<para>
Try to reserve the right number of blocks the first time. ;-). This will
be the maximum number of blocks you are going to touch in this transaction.
-I advise having a look at at least ext3_jbd.h to see the basis on which
+I advise having a look at at least ext3_jbd.h to see the basis on which
ext3 uses to make these decisions.
</para>
@@ -193,13 +259,13 @@ Another wriggle to watch out for is your on-disk block allocation strategy.
why? Because, if you undo a delete, you need to ensure you haven't reused any
of the freed blocks in a later transaction. One simple way of doing this
is make sure any blocks you allocate only have checkpointed transactions
-listed against them. Ext3 does this in ext3_test_allocatable().
+listed against them. Ext3 does this in ext3_test_allocatable().
</para>
<para>
Lock is also providing through journal_{un,}lock_updates(),
ext3 uses this when it wants a window with a clean and stable fs for a moment.
-eg.
+eg.
</para>
<programlisting>
@@ -230,19 +296,19 @@ extend it like this:-
struct journal_callback for_jbd;
// Stuff for myfs allocated together.
myfs_inode* i_commited;
-
+
}
</programlisting>
<para>
-this would be useful if you needed to know when data was committed to a
+this would be useful if you needed to know when data was committed to a
particular inode.
</para>
-</sect1>
+ </sect2>
-<sect1>
-<title>Summary</title>
+ <sect2>
+ <title>Summary</title>
<para>
Using the journal is a matter of wrapping the different context changes,
being each mount, each modification (transaction) and each changed buffer
@@ -260,15 +326,15 @@ an example.
if (clean) journal_wipe();
journal_load();
- foreach(transaction) { /*transactions must be
+ foreach(transaction) { /*transactions must be
completed before
- a syscall returns to
+ a syscall returns to
userspace*/
handle_t * xct=journal_start(my_jnrl);
foreach(bh) {
journal_get_{create,write,undo}_access(xact,bh);
- if ( myfs_modify(bh) ) { /* returns true
+ if ( myfs_modify(bh) ) { /* returns true
if makes changes */
journal_dirty_{meta,}data(xact,bh);
} else {
@@ -279,55 +345,57 @@ an example.
}
journal_destroy(my_jrnl);
</programlisting>
-</sect1>
+ </sect2>
-</chapter>
+ </sect1>
- <chapter id="adt">
+ <sect1>
<title>Data Types</title>
- <para>
+ <para>
The journalling layer uses typedefs to 'hide' the concrete definitions
of the structures used. As a client of the JBD layer you can
just rely on the using the pointer as a magic cookie of some sort.
-
+
Obviously the hiding is not enforced as this is 'C'.
- </para>
- <sect1><title>Structures</title>
+ </para>
+ <sect2><title>Structures</title>
!Iinclude/linux/jbd.h
- </sect1>
-</chapter>
+ </sect2>
+ </sect1>
- <chapter id="calls">
+ <sect1>
<title>Functions</title>
- <para>
+ <para>
The functions here are split into two groups those that
affect a journal as a whole, and those which are used to
manage transactions
-</para>
- <sect1><title>Journal Level</title>
+ </para>
+ <sect2><title>Journal Level</title>
!Efs/jbd/journal.c
!Ifs/jbd/recovery.c
- </sect1>
- <sect1><title>Transasction Level</title>
-!Efs/jbd/transaction.c
- </sect1>
-</chapter>
-<chapter>
+ </sect2>
+ <sect2><title>Transasction Level</title>
+!Efs/jbd/transaction.c
+ </sect2>
+ </sect1>
+ <sect1>
<title>See also</title>
<para>
- <citation>
+ <citation>
<ulink url="ftp://ftp.uk.linux.org/pub/linux/sct/fs/jfs/journal-design.ps.gz">
- Journaling the Linux ext2fs Filesystem,LinuxExpo 98, Stephen Tweedie
+ Journaling the Linux ext2fs Filesystem, LinuxExpo 98, Stephen Tweedie
</ulink>
- </citation>
- </para>
- <para>
+ </citation>
+ </para>
+ <para>
<citation>
<ulink url="http://olstrans.sourceforge.net/release/OLS2000-ext3/OLS2000-ext3.html">
- Ext3 Journalling FileSystem , OLS 2000, Dr. Stephen Tweedie
+ Ext3 Journalling FileSystem, OLS 2000, Dr. Stephen Tweedie
</ulink>
</citation>
- </para>
-</chapter>
+ </para>
+ </sect1>
+
+ </chapter>
</book>
diff --git a/Documentation/DocBook/kernel-api.tmpl b/Documentation/DocBook/kernel-api.tmpl
index 2b5ac604948c..a166675c4303 100644
--- a/Documentation/DocBook/kernel-api.tmpl
+++ b/Documentation/DocBook/kernel-api.tmpl
@@ -182,66 +182,6 @@ X!Ilib/string.c
</sect1>
</chapter>
- <chapter id="vfs">
- <title>The Linux VFS</title>
- <sect1><title>The Filesystem types</title>
-!Iinclude/linux/fs.h
- </sect1>
- <sect1><title>The Directory Cache</title>
-!Efs/dcache.c
-!Iinclude/linux/dcache.h
- </sect1>
- <sect1><title>Inode Handling</title>
-!Efs/inode.c
-!Efs/bad_inode.c
- </sect1>
- <sect1><title>Registration and Superblocks</title>
-!Efs/super.c
- </sect1>
- <sect1><title>File Locks</title>
-!Efs/locks.c
-!Ifs/locks.c
- </sect1>
- <sect1><title>Other Functions</title>
-!Efs/mpage.c
-!Efs/namei.c
-!Efs/buffer.c
-!Efs/bio.c
-!Efs/seq_file.c
-!Efs/filesystems.c
-!Efs/fs-writeback.c
-!Efs/block_dev.c
- </sect1>
- </chapter>
-
- <chapter id="proc">
- <title>The proc filesystem</title>
-
- <sect1><title>sysctl interface</title>
-!Ekernel/sysctl.c
- </sect1>
-
- <sect1><title>proc filesystem interface</title>
-!Ifs/proc/base.c
- </sect1>
- </chapter>
-
- <chapter id="sysfs">
- <title>The Filesystem for Exporting Kernel Objects</title>
-!Efs/sysfs/file.c
-!Efs/sysfs/symlink.c
-!Efs/sysfs/bin.c
- </chapter>
-
- <chapter id="debugfs">
- <title>The debugfs filesystem</title>
-
- <sect1><title>debugfs interface</title>
-!Efs/debugfs/inode.c
-!Efs/debugfs/file.c
- </sect1>
- </chapter>
-
<chapter id="relayfs">
<title>relay interface support</title>
diff --git a/Documentation/HOWTO b/Documentation/HOWTO
index d6f3dd1a3464..8d51c148f721 100644
--- a/Documentation/HOWTO
+++ b/Documentation/HOWTO
@@ -395,6 +395,26 @@ bugme-janitor mailing list (every change in the bugzilla is mailed here)
+Managing bug reports
+--------------------
+
+One of the best ways to put into practice your hacking skills is by fixing
+bugs reported by other people. Not only you will help to make the kernel
+more stable, you'll learn to fix real world problems and you will improve
+your skills, and other developers will be aware of your presence. Fixing
+bugs is one of the best ways to get merits among other developers, because
+not many people like wasting time fixing other people's bugs.
+
+To work in the already reported bug reports, go to http://bugzilla.kernel.org.
+If you want to be advised of the future bug reports, you can subscribe to the
+bugme-new mailing list (only new bug reports are mailed here) or to the
+bugme-janitor mailing list (every change in the bugzilla is mailed here)
+
+ http://lists.osdl.org/mailman/listinfo/bugme-new
+ http://lists.osdl.org/mailman/listinfo/bugme-janitors
+
+
+
Mailing lists
-------------
diff --git a/Documentation/MSI-HOWTO.txt b/Documentation/MSI-HOWTO.txt
index c70306abb7b2..5c34910665d1 100644
--- a/Documentation/MSI-HOWTO.txt
+++ b/Documentation/MSI-HOWTO.txt
@@ -470,7 +470,68 @@ LOC: 324553 325068
ERR: 0
MIS: 0
-6. FAQ
+6. MSI quirks
+
+Several PCI chipsets or devices are known to not support MSI.
+The PCI stack provides 3 possible levels of MSI disabling:
+* on a single device
+* on all devices behind a specific bridge
+* globally
+
+6.1. Disabling MSI on a single device
+
+Under some circumstances, it might be required to disable MSI on a
+single device, It may be achived by either not calling pci_enable_msi()
+or all, or setting the pci_dev->no_msi flag before (most of the time
+in a quirk).
+
+6.2. Disabling MSI below a bridge
+
+The vast majority of MSI quirks are required by PCI bridges not
+being able to route MSI between busses. In this case, MSI have to be
+disabled on all devices behind this bridge. It is achieves by setting
+the PCI_BUS_FLAGS_NO_MSI flag in the pci_bus->bus_flags of the bridge
+subordinate bus. There is no need to set the same flag on bridges that
+are below the broken brigde. When pci_enable_msi() is called to enable
+MSI on a device, pci_msi_supported() takes care of checking the NO_MSI
+flag in all parent busses of the device.
+
+Some bridges actually support dynamic MSI support enabling/disabling
+by changing some bits in their PCI configuration space (especially
+the Hypertransport chipsets such as the nVidia nForce and Serverworks
+HT2000). It may then be required to update the NO_MSI flag on the
+corresponding devices in the sysfs hierarchy. To enable MSI support
+on device "0000:00:0e", do:
+
+ echo 1 > /sys/bus/pci/devices/0000:00:0e/msi_bus
+
+To disable MSI support, echo 0 instead of 1. Note that it should be
+used with caution since changing this value might break interrupts.
+
+6.3. Disabling MSI globally
+
+Some extreme cases may require to disable MSI globally on the system.
+For now, the only known case is a Serverworks PCI-X chipsets (MSI are
+not supported on several busses that are not all connected to the
+chipset in the Linux PCI hierarchy). In the vast majority of other
+cases, disabling only behind a specific bridge is enough.
+
+For debugging purpose, the user may also pass pci=nomsi on the kernel
+command-line to explicitly disable MSI globally. But, once the appro-
+priate quirks are added to the kernel, this option should not be
+required anymore.
+
+6.4. Finding why MSI cannot be enabled on a device
+
+Assuming that MSI are not enabled on a device, you should look at
+dmesg to find messages that quirks may output when disabling MSI
+on some devices, some bridges or even globally.
+Then, lspci -t gives the list of bridges above a device. Reading
+/sys/bus/pci/devices/0000:00:0e/msi_bus will tell you whether MSI
+are enabled (1) or disabled (0). In 0 is found in a single bridge
+msi_bus file above the device, MSI cannot be enabled.
+
+7. FAQ
Q1. Are there any limitations on using the MSI?
diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c
index b11792abd6b6..bf2b0e2f87e1 100644
--- a/Documentation/accounting/getdelays.c
+++ b/Documentation/accounting/getdelays.c
@@ -49,7 +49,7 @@ __u64 stime, utime;
}
/* Maximum size of response requested or message sent */
-#define MAX_MSG_SIZE 256
+#define MAX_MSG_SIZE 1024
/* Maximum number of cpus expected to be specified in a cpumask */
#define MAX_CPUS 32
/* Maximum length of pathname to log file */
diff --git a/Documentation/cpu-hotplug.txt b/Documentation/cpu-hotplug.txt
index bc107cb157a8..4868c34f7509 100644
--- a/Documentation/cpu-hotplug.txt
+++ b/Documentation/cpu-hotplug.txt
@@ -46,7 +46,7 @@ maxcpus=n Restrict boot time cpus to n. Say if you have 4 cpus, using
maxcpus=2 will only boot 2. You can choose to bring the
other cpus later online, read FAQ's for more info.
-additional_cpus*=n Use this to limit hotpluggable cpus. This option sets
+additional_cpus=n (*) Use this to limit hotpluggable cpus. This option sets
cpu_possible_map = cpu_present_map + additional_cpus
(*) Option valid only for following architectures
@@ -101,15 +101,15 @@ cpu_possible_map/for_each_possible_cpu() to iterate.
Never use anything other than cpumask_t to represent bitmap of CPUs.
-#include <linux/cpumask.h>
+ #include <linux/cpumask.h>
-for_each_possible_cpu - Iterate over cpu_possible_map
-for_each_online_cpu - Iterate over cpu_online_map
-for_each_present_cpu - Iterate over cpu_present_map
-for_each_cpu_mask(x,mask) - Iterate over some random collection of cpu mask.
+ for_each_possible_cpu - Iterate over cpu_possible_map
+ for_each_online_cpu - Iterate over cpu_online_map
+ for_each_present_cpu - Iterate over cpu_present_map
+ for_each_cpu_mask(x,mask) - Iterate over some random collection of cpu mask.
-#include <linux/cpu.h>
-lock_cpu_hotplug() and unlock_cpu_hotplug():
+ #include <linux/cpu.h>
+ lock_cpu_hotplug() and unlock_cpu_hotplug():
The above calls are used to inhibit cpu hotplug operations. While holding the
cpucontrol mutex, cpu_online_map will not change. If you merely need to avoid
@@ -120,7 +120,7 @@ will work as long as stop_machine_run() is used to take a cpu down.
CPU Hotplug - Frequently Asked Questions.
-Q: How to i enable my kernel to support CPU hotplug?
+Q: How to enable my kernel to support CPU hotplug?
A: When doing make defconfig, Enable CPU hotplug support
"Processor type and Features" -> Support for Hotpluggable CPUs
@@ -141,39 +141,39 @@ A: You should now notice an entry in sysfs.
Check if sysfs is mounted, using the "mount" command. You should notice
an entry as shown below in the output.
-....
-none on /sys type sysfs (rw)
-....
+ ....
+ none on /sys type sysfs (rw)
+ ....
-if this is not mounted, do the following.
+If this is not mounted, do the following.
-#mkdir /sysfs
-#mount -t sysfs sys /sys
+ #mkdir /sysfs
+ #mount -t sysfs sys /sys
-now you should see entries for all present cpu, the following is an example
+Now you should see entries for all present cpu, the following is an example
in a 8-way system.
-#pwd
-#/sys/devices/system/cpu
-#ls -l
-total 0
-drwxr-xr-x 10 root root 0 Sep 19 07:44 .
-drwxr-xr-x 13 root root 0 Sep 19 07:45 ..
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu0
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu1
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu2
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu3
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu4
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu5
-drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu6
-drwxr-xr-x 3 root root 0 Sep 19 07:48 cpu7
+ #pwd
+ #/sys/devices/system/cpu
+ #ls -l
+ total 0
+ drwxr-xr-x 10 root root 0 Sep 19 07:44 .
+ drwxr-xr-x 13 root root 0 Sep 19 07:45 ..
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu0
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu1
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu2
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu3
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu4
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu5
+ drwxr-xr-x 3 root root 0 Sep 19 07:44 cpu6
+ drwxr-xr-x 3 root root 0 Sep 19 07:48 cpu7
Under each directory you would find an "online" file which is the control
file to logically online/offline a processor.
Q: Does hot-add/hot-remove refer to physical add/remove of cpus?
A: The usage of hot-add/remove may not be very consistently used in the code.
-CONFIG_CPU_HOTPLUG enables logical online/offline capability in the kernel.
+CONFIG_HOTPLUG_CPU enables logical online/offline capability in the kernel.
To support physical addition/removal, one would need some BIOS hooks and
the platform should have something like an attention button in PCI hotplug.
CONFIG_ACPI_HOTPLUG_CPU enables ACPI support for physical add/remove of CPUs.
@@ -181,17 +181,17 @@ CONFIG_ACPI_HOTPLUG_CPU enables ACPI support for physical add/remove of CPUs.
Q: How do i logically offline a CPU?
A: Do the following.
-#echo 0 > /sys/devices/system/cpu/cpuX/online
+ #echo 0 > /sys/devices/system/cpu/cpuX/online
-once the logical offline is successful, check
+Once the logical offline is successful, check
-#cat /proc/interrupts
+ #cat /proc/interrupts
-you should now not see the CPU that you removed. Also online file will report
+You should now not see the CPU that you removed. Also online file will report
the state as 0 when a cpu if offline and 1 when its online.
-#To display the current cpu state.
-#cat /sys/devices/system/cpu/cpuX/online
+ #To display the current cpu state.
+ #cat /sys/devices/system/cpu/cpuX/online
Q: Why cant i remove CPU0 on some systems?
A: Some architectures may have some special dependency on a certain CPU.
@@ -234,8 +234,8 @@ Q: If i have some kernel code that needs to be aware of CPU arrival and
departure, how to i arrange for proper notification?
A: This is what you would need in your kernel code to receive notifications.
- #include <linux/cpu.h>
- static int __cpuinit foobar_cpu_callback(struct notifier_block *nfb,
+ #include <linux/cpu.h>
+ static int __cpuinit foobar_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
@@ -279,10 +279,10 @@ Q: I don't see my action being called for all CPUs already up and running?
A: Yes, CPU notifiers are called only when new CPUs are on-lined or offlined.
If you need to perform some action for each cpu already in the system, then
- for_each_online_cpu(i) {
+ for_each_online_cpu(i) {
foobar_cpu_callback(&foobar_cpu_notifier, CPU_UP_PREPARE, i);
- foobar_cpu_callback(&foobar-cpu_notifier, CPU_ONLINE, i);
- }
+ foobar_cpu_callback(&foobar_cpu_notifier, CPU_ONLINE, i);
+ }
Q: If i would like to develop cpu hotplug support for a new architecture,
what do i need at a minimum?
@@ -307,38 +307,38 @@ Q: I need to ensure that a particular cpu is not removed when there is some
work specific to this cpu is in progress.
A: First switch the current thread context to preferred cpu
- int my_func_on_cpu(int cpu)
- {
- cpumask_t saved_mask, new_mask = CPU_MASK_NONE;
- int curr_cpu, err = 0;
-
- saved_mask = current->cpus_allowed;
- cpu_set(cpu, new_mask);
- err = set_cpus_allowed(current, new_mask);
-
- if (err)
- return err;
-
- /*
- * If we got scheduled out just after the return from
- * set_cpus_allowed() before running the work, this ensures
- * we stay locked.
- */
- curr_cpu = get_cpu();
-
- if (curr_cpu != cpu) {
- err = -EAGAIN;
- goto ret;
- } else {
- /*
- * Do work : But cant sleep, since get_cpu() disables preempt
- */
- }
- ret:
- put_cpu();
- set_cpus_allowed(current, saved_mask);
- return err;
- }
+ int my_func_on_cpu(int cpu)
+ {
+ cpumask_t saved_mask, new_mask = CPU_MASK_NONE;
+ int curr_cpu, err = 0;
+
+ saved_mask = current->cpus_allowed;
+ cpu_set(cpu, new_mask);
+ err = set_cpus_allowed(current, new_mask);
+
+ if (err)
+ return err;
+
+ /*
+ * If we got scheduled out just after the return from
+ * set_cpus_allowed() before running the work, this ensures
+ * we stay locked.
+ */
+ curr_cpu = get_cpu();
+
+ if (curr_cpu != cpu) {
+ err = -EAGAIN;
+ goto ret;
+ } else {
+ /*
+ * Do work : But cant sleep, since get_cpu() disables preempt
+ */
+ }
+ ret:
+ put_cpu();
+ set_cpus_allowed(current, saved_mask);
+ return err;
+ }
Q: How do we determine how many CPUs are available for hotplug.
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 24f3c63b3017..d52c4aaaf17f 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -53,18 +53,6 @@ Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
---------------------------
-What: sys_sysctl
-When: January 2007
-Why: The same information is available through /proc/sys and that is the
- interface user space prefers to use. And there do not appear to be
- any existing user in user space of sys_sysctl. The additional
- maintenance overhead of keeping a set of binary names gets
- in the way of doing a good job of maintaining this interface.
-
-Who: Eric Biederman <ebiederm@xmission.com>
-
----------------------------
-
What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
When: November 2005
Files: drivers/pcmcia/: pcmcia_ioctl.c
@@ -255,7 +243,7 @@ Who: Stephen Hemminger <shemminger@osdl.org>
What: PHYSDEVPATH, PHYSDEVBUS, PHYSDEVDRIVER in the uevent environment
-When: Oktober 2008
+When: October 2008
Why: The stacking of class devices makes these values misleading and
inconsistent.
Class devices should not carry any of these properties, and bus
diff --git a/Documentation/filesystems/00-INDEX b/Documentation/filesystems/00-INDEX
index 3c384c0cf86e..4dc28cc93503 100644
--- a/Documentation/filesystems/00-INDEX
+++ b/Documentation/filesystems/00-INDEX
@@ -34,6 +34,8 @@ ext2.txt
- info, mount options and specifications for the Ext2 filesystem.
ext3.txt
- info, mount options and specifications for the Ext3 filesystem.
+ext4.txt
+ - info, mount options and specifications for the Ext4 filesystem.
files.txt
- info on file management in the Linux kernel.
fuse.txt
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
new file mode 100644
index 000000000000..6a4adcae9f9a
--- /dev/null
+++ b/Documentation/filesystems/ext4.txt
@@ -0,0 +1,236 @@
+
+Ext4 Filesystem
+===============
+
+This is a development version of the ext4 filesystem, an advanced level
+of the ext3 filesystem which incorporates scalability and reliability
+enhancements for supporting large filesystems (64 bit) in keeping with
+increasing disk capacities and state-of-the-art feature requirements.
+
+Mailing list: linux-ext4@vger.kernel.org
+
+
+1. Quick usage instructions:
+===========================
+
+ - Grab updated e2fsprogs from
+ ftp://ftp.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs-interim/
+ This is a patchset on top of e2fsprogs-1.39, which can be found at
+ ftp://ftp.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs/
+
+ - It's still mke2fs -j /dev/hda1
+
+ - mount /dev/hda1 /wherever -t ext4dev
+
+ - To enable extents,
+
+ mount /dev/hda1 /wherever -t ext4dev -o extents
+
+ - The filesystem is compatible with the ext3 driver until you add a file
+ which has extents (ie: `mount -o extents', then create a file).
+
+ NOTE: The "extents" mount flag is temporary. It will soon go away and
+ extents will be enabled by the "-o extents" flag to mke2fs or tune2fs
+
+ - When comparing performance with other filesystems, remember that
+ ext3/4 by default offers higher data integrity guarantees than most. So
+ when comparing with a metadata-only journalling filesystem, use `mount -o
+ data=writeback'. And you might as well use `mount -o nobh' too along
+ with it. Making the journal larger than the mke2fs default often helps
+ performance with metadata-intensive workloads.
+
+2. Features
+===========
+
+2.1 Currently available
+
+* ability to use filesystems > 16TB
+* extent format reduces metadata overhead (RAM, IO for access, transactions)
+* extent format more robust in face of on-disk corruption due to magics,
+* internal redunancy in tree
+
+2.1 Previously available, soon to be enabled by default by "mkefs.ext4":
+
+* dir_index and resize inode will be on by default
+* large inodes will be used by default for fast EAs, nsec timestamps, etc
+
+2.2 Candidate features for future inclusion
+
+There are several under discussion, whether they all make it in is
+partly a function of how much time everyone has to work on them:
+
+* improved file allocation (multi-block alloc, delayed alloc; basically done)
+* fix 32000 subdirectory limit (patch exists, needs some e2fsck work)
+* nsec timestamps for mtime, atime, ctime, create time (patch exists,
+ needs some e2fsck work)
+* inode version field on disk (NFSv4, Lustre; prototype exists)
+* reduced mke2fs/e2fsck time via uninitialized groups (prototype exists)
+* journal checksumming for robustness, performance (prototype exists)
+* persistent file preallocation (e.g for streaming media, databases)
+
+Features like metadata checksumming have been discussed and planned for
+a bit but no patches exist yet so I'm not sure they're in the near-term
+roadmap.
+
+The big performance win will come with mballoc and delalloc. CFS has
+been using mballoc for a few years already with Lustre, and IBM + Bull
+did a lot of benchmarking on it. The reason it isn't in the first set of
+patches is partly a manageability issue, and partly because it doesn't
+directly affect the on-disk format (outside of much better allocation)
+so it isn't critical to get into the first round of changes. I believe
+Alex is working on a new set of patches right now.
+
+3. Options
+==========
+
+When mounting an ext4 filesystem, the following option are accepted:
+(*) == default
+
+extents ext4 will use extents to address file data. The
+ file system will no longer be mountable by ext3.
+
+journal=update Update the ext4 file system's journal to the current
+ format.
+
+journal=inum When a journal already exists, this option is ignored.
+ Otherwise, it specifies the number of the inode which
+ will represent the ext4 file system's journal file.
+
+journal_dev=devnum When the external journal device's major/minor numbers
+ have changed, this option allows the user to specify
+ the new journal location. The journal device is
+ identified through its new major/minor numbers encoded
+ in devnum.
+
+noload Don't load the journal on mounting.
+
+data=journal All data are committed into the journal prior to being
+ written into the main file system.
+
+data=ordered (*) All data are forced directly out to the main file
+ system prior to its metadata being committed to the
+ journal.
+
+data=writeback Data ordering is not preserved, data may be written
+ into the main file system after its metadata has been
+ committed to the journal.
+
+commit=nrsec (*) Ext4 can be told to sync all its data and metadata
+ every 'nrsec' seconds. The default value is 5 seconds.
+ This means that if you lose your power, you will lose
+ as much as the latest 5 seconds of work (your
+ filesystem will not be damaged though, thanks to the
+ journaling). This default value (or any low value)
+ will hurt performance, but it's good for data-safety.
+ Setting it to 0 will have the same effect as leaving
+ it at the default (5 seconds).
+ Setting it to very large values will improve
+ performance.
+
+barrier=1 This enables/disables barriers. barrier=0 disables
+ it, barrier=1 enables it.
+
+orlov (*) This enables the new Orlov block allocator. It is
+ enabled by default.
+
+oldalloc This disables the Orlov block allocator and enables
+ the old block allocator. Orlov should have better
+ performance - we'd like to get some feedback if it's
+ the contrary for you.
+
+user_xattr Enables Extended User Attributes. Additionally, you
+ need to have extended attribute support enabled in the
+ kernel configuration (CONFIG_EXT4_FS_XATTR). See the
+ attr(5) manual page and http://acl.bestbits.at/ to
+ learn more about extended attributes.
+
+nouser_xattr Disables Extended User Attributes.
+
+acl Enables POSIX Access Control Lists support.
+ Additionally, you need to have ACL support enabled in
+ the kernel configuration (CONFIG_EXT4_FS_POSIX_ACL).
+ See the acl(5) manual page and http://acl.bestbits.at/
+ for more information.
+
+noacl This option disables POSIX Access Control List
+ support.
+
+reservation
+
+noreservation
+
+bsddf (*) Make 'df' act like BSD.
+minixdf Make 'df' act like Minix.
+
+check=none Don't do extra checking of bitmaps on mount.
+nocheck
+
+debug Extra debugging information is sent to syslog.
+
+errors=remount-ro(*) Remount the filesystem read-only on an error.
+errors=continue Keep going on a filesystem error.
+errors=panic Panic and halt the machine if an error occurs.
+
+grpid Give objects the same group ID as their creator.
+bsdgroups
+
+nogrpid (*) New objects have the group ID of their creator.
+sysvgroups
+
+resgid=n The group ID which may use the reserved blocks.
+
+resuid=n The user ID which may use the reserved blocks.
+
+sb=n Use alternate superblock at this location.
+
+quota
+noquota
+grpquota
+usrquota
+
+bh (*) ext4 associates buffer heads to data pages to
+nobh (a) cache disk block mapping information
+ (b) link pages into transaction to provide
+ ordering guarantees.
+ "bh" option forces use of buffer heads.
+ "nobh" option tries to avoid associating buffer
+ heads (supported only for "writeback" mode).
+
+
+Data Mode
+---------
+There are 3 different data modes:
+
+* writeback mode
+In data=writeback mode, ext4 does not journal data at all. This mode provides
+a similar level of journaling as that of XFS, JFS, and ReiserFS in its default
+mode - metadata journaling. A crash+recovery can cause incorrect data to
+appear in files which were written shortly before the crash. This mode will
+typically provide the best ext4 performance.
+
+* ordered mode
+In data=ordered mode, ext4 only officially journals metadata, but it logically
+groups metadata and data blocks into a single unit called a transaction. When
+it's time to write the new metadata out to disk, the associated data blocks
+are written first. In general, this mode performs slightly slower than
+writeback but significantly faster than journal mode.
+
+* journal mode
+data=journal mode provides full data and metadata journaling. All new data is
+written to the journal first, and then to its final location.
+In the event of a crash, the journal can be replayed, bringing both data and
+metadata into a consistent state. This mode is the slowest except when data
+needs to be read from and written to disk at the same time where it
+outperforms all others modes.
+
+References
+==========
+
+kernel source: <file:fs/ext4/>
+ <file:fs/jbd2/>
+
+programs: http://e2fsprogs.sourceforge.net/
+ http://ext2resize.sourceforge.net
+
+useful links: http://fedoraproject.org/wiki/ext3-devel
+ http://www.bullopensource.org/ext4/
diff --git a/Documentation/filesystems/udf.txt b/Documentation/filesystems/udf.txt
index 511b4230c053..fde829a756e6 100644
--- a/Documentation/filesystems/udf.txt
+++ b/Documentation/filesystems/udf.txt
@@ -7,8 +7,17 @@ If you encounter problems with reading UDF discs using this driver,
please report them to linux_udf@hpesjro.fc.hp.com, which is the
developer's list.
-Write support requires a block driver which supports writing. The current
-scsi and ide cdrom drivers do not support writing.
+Write support requires a block driver which supports writing. Currently
+dvd+rw drives and media support true random sector writes, and so a udf
+filesystem on such devices can be directly mounted read/write. CD-RW
+media however, does not support this. Instead the media can be formatted
+for packet mode using the utility cdrwtool, then the pktcdvd driver can
+be bound to the underlying cd device to provide the required buffering
+and read-modify-write cycles to allow the filesystem random sector writes
+while providing the hardware with only full packet writes. While not
+required for dvd+rw media, use of the pktcdvd driver often enhances
+performance due to very poor read-modify-write support supplied internally
+by drive firmware.
-------------------------------------------------------------------------------
The following mount options are supported:
diff --git a/Documentation/hwmon/adm9240 b/Documentation/hwmon/adm9240
index 35f618f32896..2c6f1fed4618 100644
--- a/Documentation/hwmon/adm9240
+++ b/Documentation/hwmon/adm9240
@@ -24,7 +24,7 @@ Authors:
Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>,
Michiel Rook <michiel@grendelproject.nl>,
- Grant Coady <gcoady@gmail.com> with guidance
+ Grant Coady <gcoady.lk@gmail.com> with guidance
from Jean Delvare <khali@linux-fr.org>
Interface
diff --git a/Documentation/hwmon/f71805f b/Documentation/hwmon/f71805f
index 28c5b7d1eb90..2ca69df669c3 100644
--- a/Documentation/hwmon/f71805f
+++ b/Documentation/hwmon/f71805f
@@ -17,7 +17,7 @@ Thanks to Kris Chen from Fintek for answering technical questions and
providing additional documentation.
Thanks to Chris Lin from Jetway for providing wiring schematics and
-anwsering technical questions.
+answering technical questions.
Description
diff --git a/Documentation/hwmon/k8temp b/Documentation/hwmon/k8temp
index bab445ab0f52..30d123b8d920 100644
--- a/Documentation/hwmon/k8temp
+++ b/Documentation/hwmon/k8temp
@@ -2,7 +2,7 @@ Kernel driver k8temp
====================
Supported chips:
- * AMD K8 CPU
+ * AMD Athlon64/FX or Opteron CPUs
Prefix: 'k8temp'
Addresses scanned: PCI space
Datasheet: http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/32559.pdf
@@ -13,10 +13,13 @@ Contact: Rudolf Marek <r.marek@sh.cvut.cz>
Description
-----------
-This driver permits reading temperature sensor(s) embedded inside AMD K8 CPUs.
-Official documentation says that it works from revision F of K8 core, but
-in fact it seems to be implemented for all revisions of K8 except the first
-two revisions (SH-B0 and SH-B3).
+This driver permits reading temperature sensor(s) embedded inside AMD K8
+family CPUs (Athlon64/FX, Opteron). Official documentation says that it works
+from revision F of K8 core, but in fact it seems to be implemented for all
+revisions of K8 except the first two revisions (SH-B0 and SH-B3).
+
+Please note that you will need at least lm-sensors 2.10.1 for proper userspace
+support.
There can be up to four temperature sensors inside single CPU. The driver
will auto-detect the sensors and will display only temperatures from
diff --git a/Documentation/hwmon/smsc47m1 b/Documentation/hwmon/smsc47m1
index c15bbe68264e..04a11124f667 100644
--- a/Documentation/hwmon/smsc47m1
+++ b/Documentation/hwmon/smsc47m1
@@ -2,12 +2,14 @@ Kernel driver smsc47m1
======================
Supported chips:
- * SMSC LPC47B27x, LPC47M10x, LPC47M13x, LPC47M14x, LPC47M15x and LPC47M192
+ * SMSC LPC47B27x, LPC47M112, LPC47M10x, LPC47M13x, LPC47M14x,
+ LPC47M15x and LPC47M192
Addresses scanned: none, address read from Super I/O config space
Prefix: 'smsc47m1'
Datasheets:
http://www.smsc.com/main/datasheets/47b27x.pdf
http://www.smsc.com/main/datasheets/47m10x.pdf
+ http://www.smsc.com/main/datasheets/47m112.pdf
http://www.smsc.com/main/tools/discontinued/47m13x.pdf
http://www.smsc.com/main/datasheets/47m14x.pdf
http://www.smsc.com/main/tools/discontinued/47m15x.pdf
diff --git a/Documentation/hwmon/w83627ehf b/Documentation/hwmon/w83627ehf
index fae3b781d82d..caa610a297e8 100644
--- a/Documentation/hwmon/w83627ehf
+++ b/Documentation/hwmon/w83627ehf
@@ -26,7 +26,7 @@ fan control mode).
Temperatures are measured in degrees Celsius and measurement resolution is 1
degC for temp1 and 0.5 degC for temp2 and temp3. An alarm is triggered when
the temperature gets higher than high limit; it stays on until the temperature
-falls below the Hysteresis value.
+falls below the hysteresis value.
Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
@@ -67,9 +67,9 @@ Thermal Cruise mode
If the temperature is in the range defined by:
-pwm[1-4]_target - set target temperature, unit millidegree Celcius
+pwm[1-4]_target - set target temperature, unit millidegree Celsius
(range 0 - 127000)
-pwm[1-4]_tolerance - tolerance, unit millidegree Celcius (range 0 - 15000)
+pwm[1-4]_tolerance - tolerance, unit millidegree Celsius (range 0 - 15000)
there are no changes to fan speed. Once the temperature leaves the interval,
fan speed increases (temp is higher) or decreases if lower than desired.
diff --git a/Documentation/ibm-acpi.txt b/Documentation/ibm-acpi.txt
index 71aa40345272..e50595bfd8ea 100644
--- a/Documentation/ibm-acpi.txt
+++ b/Documentation/ibm-acpi.txt
@@ -30,9 +30,10 @@ detailed description):
- ACPI sounds
- temperature sensors
- Experimental: embedded controller register dump
- - Experimental: LCD brightness control
- - Experimental: volume control
+ - LCD brightness control
+ - Volume control
- Experimental: fan speed, fan enable/disable
+ - Experimental: WAN enable and disable
A compatibility table by model and feature is maintained on the web
site, http://ibm-acpi.sf.net/. I appreciate any success or failure
@@ -52,40 +53,7 @@ Installation
If you are compiling this driver as included in the Linux kernel
sources, simply enable the CONFIG_ACPI_IBM option (Power Management /
-ACPI / IBM ThinkPad Laptop Extras). The rest of this section describes
-how to install this driver when downloaded from the web site.
-
-First, you need to get a kernel with ACPI support up and running.
-Please refer to http://acpi.sourceforge.net/ for help with this
-step. How successful you will be depends a lot on you ThinkPad model,
-the kernel you are using and any additional patches applied. The
-kernel provided with your distribution may not be good enough. I
-needed to compile a 2.6.7 kernel with the 20040715 ACPI patch to get
-ACPI working reliably on my ThinkPad X40. Old ThinkPad models may not
-be supported at all.
-
-Assuming you have the basic ACPI support working (e.g. you can see the
-/proc/acpi directory), follow the following steps to install this
-driver:
-
- - unpack the archive:
-
- tar xzvf ibm-acpi-x.y.tar.gz; cd ibm-acpi-x.y
-
- - compile the driver:
-
- make
-
- - install the module in your kernel modules directory:
-
- make install
-
- - load the module:
-
- modprobe ibm_acpi
-
-After loading the module, check the "dmesg" output for any error messages.
-
+ACPI / IBM ThinkPad Laptop Extras).
Features
--------
@@ -523,13 +491,8 @@ registers contain the current battery capacity, etc. If you experiment
with this, do send me your results (including some complete dumps with
a description of the conditions when they were taken.)
-EXPERIMENTAL: LCD brightness control -- /proc/acpi/ibm/brightness
------------------------------------------------------------------
-
-This feature is marked EXPERIMENTAL because the implementation
-directly accesses hardware registers and may not work as expected. USE
-WITH CAUTION! To use this feature, you need to supply the
-experimental=1 parameter when loading the module.
+LCD brightness control -- /proc/acpi/ibm/brightness
+---------------------------------------------------
This feature allows software control of the LCD brightness on ThinkPad
models which don't have a hardware brightness slider. The available
@@ -542,13 +505,8 @@ commands are:
The <level> number range is 0 to 7, although not all of them may be
distinct. The current brightness level is shown in the file.
-EXPERIMENTAL: Volume control -- /proc/acpi/ibm/volume
------------------------------------------------------
-
-This feature is marked EXPERIMENTAL because the implementation
-directly accesses hardware registers and may not work as expected. USE
-WITH CAUTION! To use this feature, you need to supply the
-experimental=1 parameter when loading the module.
+Volume control -- /proc/acpi/ibm/volume
+---------------------------------------
This feature allows volume control on ThinkPad models which don't have
a hardware volume knob. The available commands are:
@@ -611,6 +569,23 @@ with the following command:
echo 'level <level>' > /proc/acpi/ibm/thermal
+EXPERIMENTAL: WAN -- /proc/acpi/ibm/wan
+---------------------------------------
+
+This feature is marked EXPERIMENTAL because the implementation
+directly accesses hardware registers and may not work as expected. USE
+WITH CAUTION! To use this feature, you need to supply the
+experimental=1 parameter when loading the module.
+
+This feature shows the presence and current state of a WAN (Sierra
+Wireless EV-DO) device. If WAN is installed, the following commands can
+be used:
+
+ echo enable > /proc/acpi/ibm/wan
+ echo disable > /proc/acpi/ibm/wan
+
+It was tested on a Lenovo Thinkpad X60. It should probably work on other
+Thinkpad models which come with this module installed.
Multiple Commands, Module Parameters
------------------------------------
diff --git a/Documentation/input/xpad.txt b/Documentation/input/xpad.txt
index b9111a703ce0..5427bdf225ed 100644
--- a/Documentation/input/xpad.txt
+++ b/Documentation/input/xpad.txt
@@ -3,20 +3,37 @@ xpad - Linux USB driver for X-Box gamepads
This is the very first release of a driver for X-Box gamepads.
Basically, this was hacked away in just a few hours, so don't expect
miracles.
+
In particular, there is currently NO support for the rumble pack.
You won't find many ff-aware linux applications anyway.
-0. Status
----------
+0. Notes
+--------
+
+Driver updated for kernel 2.6.17.11. (Based on a patch for 2.6.11.4.)
-For now, this driver has only been tested on just one Linux-Box.
-This one is running a 2.4.18 kernel with usb-uhci on an amd athlon 600.
+The number of buttons/axes reported varies based on 3 things:
+- if you are using a known controller
+- if you are using a known dance pad
+- if using an unknown device (one not listed below), what you set in the
+ module configuration for "Map D-PAD to buttons rather than axes for unknown
+ pads" (module option dpad_to_buttons)
-The jstest-program from joystick-1.2.15 (jstest-version 2.1.0) reports
-8 axes and 10 buttons.
+If you set dpad_to_buttons to 0 and you are using an unknown device (one
+not listed below), the driver will map the directional pad to axes (X/Y),
+if you said N it will map the d-pad to buttons, which is needed for dance
+style games to function correctly. The default is Y.
+
+dpad_to_buttons has no effect for known pads.
+
+0.1 Normal Controllers
+----------------------
+With a normal controller, the directional pad is mapped to its own X/Y axes.
+The jstest-program from joystick-1.2.15 (jstest-version 2.1.0) will report 8
+axes and 10 buttons.
-Alls 8 axes work, though they all have the same range (-32768..32767)
+All 8 axes work, though they all have the same range (-32768..32767)
and the zero-setting is not correct for the triggers (I don't know if that
is some limitation of jstest, since the input device setup should be fine. I
didn't have a look at jstest itself yet).
@@ -30,16 +47,50 @@ in game functionality were OK. However, I find it rather difficult to
play first person shooters with a pad. Your mileage may vary.
+0.2 Xbox Dance Pads
+-------------------
+When using a known dance pad, jstest will report 6 axes and 14 buttons.
+
+For dance style pads (like the redoctane pad) several changes
+have been made. The old driver would map the d-pad to axes, resulting
+in the driver being unable to report when the user was pressing both
+left+right or up+down, making DDR style games unplayable.
+
+Known dance pads automatically map the d-pad to buttons and will work
+correctly out of the box.
+
+If your dance pad is recognized by the driver but is using axes instead
+of buttons, see section 0.3 - Unknown Controllers
+
+I've tested this with Stepmania, and it works quite well.
+
+
+0.3 Unkown Controllers
+----------------------
+If you have an unkown xbox controller, it should work just fine with
+the default settings.
+
+HOWEVER if you have an unknown dance pad not listed below, it will not
+work UNLESS you set "dpad_to_buttons" to 1 in the module configuration.
+
+PLEASE if you have an unkown controller, email Dom <binary1230@yahoo.com> with
+a dump from /proc/bus/usb and a description of the pad (manufacturer, country,
+whether it is a dance pad or normal controller) so that we can add your pad
+to the list of supported devices, ensuring that it will work out of the
+box in the future.
+
+
1. USB adapter
--------------
Before you can actually use the driver, you need to get yourself an
-adapter cable to connect the X-Box controller to your Linux-Box.
+adapter cable to connect the X-Box controller to your Linux-Box. You
+can buy these online fairly cheap, or build your own.
-Such a cable is pretty easy to build. The Controller itself is a USB compound
-device (a hub with three ports for two expansion slots and the controller
-device) with the only difference in a nonstandard connector (5 pins vs. 4 on
-standard USB connector).
+Such a cable is pretty easy to build. The Controller itself is a USB
+compound device (a hub with three ports for two expansion slots and
+the controller device) with the only difference in a nonstandard connector
+(5 pins vs. 4 on standard USB connector).
You just need to solder a USB connector onto the cable and keep the
yellow wire unconnected. The other pins have the same order on both
@@ -51,36 +102,36 @@ original one. You can buy an extension cable and cut that instead. That way,
you can still use the controller with your X-Box, if you have one ;)
-2. driver installation
+2. Driver Installation
----------------------
Once you have the adapter cable and the controller is connected, you need
to load your USB subsystem and should cat /proc/bus/usb/devices.
There should be an entry like the one at the end [4].
-Currently (as of version 0.0.4), the following three devices are included:
+Currently (as of version 0.0.6), the following devices are included:
original Microsoft XBOX controller (US), vendor=0x045e, product=0x0202
+ smaller Microsoft XBOX controller (US), vendor=0x045e, product=0x0289
original Microsoft XBOX controller (Japan), vendor=0x045e, product=0x0285
InterAct PowerPad Pro (Germany), vendor=0x05fd, product=0x107a
+ RedOctane Xbox Dance Pad (US), vendor=0x0c12, product=0x8809
-If you have another controller that is not listed above and is not recognized
-by the driver, please drop me a line with the appropriate info (that is, include
-the name, vendor and product ID, as well as the country where you bought it;
-sending the whole dump out of /proc/bus/usb/devices along would be even better).
+The driver should work with xbox pads not listed above as well, however
+you will need to do something extra for dance pads to work.
-In theory, the driver should work with other controllers than mine
-(InterAct PowerPad pro, bought in Germany) just fine, but I cannot test this
-for I only have this one controller.
+If you have a controller not listed above, see 0.3 - Unknown Controllers
If you compiled and installed the driver, test the functionality:
> modprobe xpad
> modprobe joydev
> jstest /dev/js0
-There should be a single line showing 18 inputs (8 axes, 10 buttons), and
-it's values should change if you move the sticks and push the buttons.
+If you're using a normal controller, there should be a single line showing
+18 inputs (8 axes, 10 buttons), and its values should change if you move
+the sticks and push the buttons. If you're using a dance pad, it should
+show 20 inputs (6 axes, 14 buttons).
-It works? Voila, your done ;)
+It works? Voila, you're done ;)
3. Thanks
@@ -111,6 +162,22 @@ I: If#= 0 Alt= 0 #EPs= 2 Cls=58(unk. ) Sub=42 Prot=00 Driver=(none)
E: Ad=81(I) Atr=03(Int.) MxPS= 32 Ivl= 10ms
E: Ad=02(O) Atr=03(Int.) MxPS= 32 Ivl= 10ms
+5. /proc/bus/usb/devices - dump from Redoctane Xbox Dance Pad (US):
+
+T: Bus=01 Lev=02 Prnt=09 Port=00 Cnt=01 Dev#= 10 Spd=12 MxCh= 0
+D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
+P: Vendor=0c12 ProdID=8809 Rev= 0.01
+S: Product=XBOX DDR
+C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
+I: If#= 0 Alt= 0 #EPs= 2 Cls=58(unk. ) Sub=42 Prot=00 Driver=xpad
+E: Ad=82(I) Atr=03(Int.) MxPS= 32 Ivl=4ms
+E: Ad=02(O) Atr=03(Int.) MxPS= 32 Ivl=4ms
+
--
Marko Friedemann <mfr@bmx-chemnitz.de>
2002-07-16
+ - original doc
+
+Dominic Cerquetti <binary1230@yahoo.com>
+2005-03-19
+ - added stuff for dance pads, new d-pad->axes mappings
diff --git a/Documentation/kernel-doc-nano-HOWTO.txt b/Documentation/kernel-doc-nano-HOWTO.txt
index c65233d430f0..284e7e198e93 100644
--- a/Documentation/kernel-doc-nano-HOWTO.txt
+++ b/Documentation/kernel-doc-nano-HOWTO.txt
@@ -17,7 +17,7 @@ are:
special place-holders for where the extracted documentation should
go.
-- scripts/docproc.c
+- scripts/basic/docproc.c
This is a program for converting SGML template files into SGML
files. When a file is referenced it is searched for symbols
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 5a92ac085969..9913f0676643 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -164,6 +164,10 @@ and is between 256 and 4096 characters. It is defined in the file
acpi_skip_timer_override [HW,ACPI]
Recognize and ignore IRQ0/pin2 Interrupt Override.
For broken nForce2 BIOS resulting in XT-PIC timer.
+ acpi_use_timer_override [HW,ACPI}
+ Use timer override. For some broken Nvidia NF5 boards
+ that require a timer override, but don't have
+ HPET
acpi_dbg_layer= [HW,ACPI]
Format: <int>
@@ -1231,6 +1235,11 @@ and is between 256 and 4096 characters. It is defined in the file
machine check when some devices' config space
is read. But various workarounds are disabled
and some IOMMU drivers will not work.
+ bfsort Sort PCI devices into breadth-first order.
+ This sorting is done to get a device
+ order compatible with older (<= 2.4) kernels.
+ nobfsort Don't sort PCI devices into breadth-first order.
+
pcmv= [HW,PCMCIA] BadgePAD 4
pd. [PARIDE]
diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt
index ba26201d5023..d71fafffce90 100644
--- a/Documentation/kprobes.txt
+++ b/Documentation/kprobes.txt
@@ -442,9 +442,10 @@ static int __init kprobe_init(void)
kp.fault_handler = handler_fault;
kp.symbol_name = "do_fork";
- if ((ret = register_kprobe(&kp) < 0)) {
+ ret = register_kprobe(&kp);
+ if (ret < 0) {
printk("register_kprobe failed, returned %d\n", ret);
- return -1;
+ return ret;
}
printk("kprobe registered\n");
return 0;
diff --git a/Documentation/lockdep-design.txt b/Documentation/lockdep-design.txt
index dab123db5a4f..488773018152 100644
--- a/Documentation/lockdep-design.txt
+++ b/Documentation/lockdep-design.txt
@@ -50,10 +50,10 @@ The bit position indicates hardirq, softirq, hardirq-read,
softirq-read respectively, and the character displayed in each
indicates:
- '.' acquired while irqs enabled
+ '.' acquired while irqs disabled
'+' acquired in irq context
- '-' acquired in process context with irqs disabled
- '?' read-acquired both with irqs enabled and in irq context
+ '-' acquired with irqs enabled
+ '?' read acquired in irq context with irqs enabled.
Unused mutexes cannot be part of the cause of an error.
diff --git a/Documentation/memory-barriers.txt b/Documentation/memory-barriers.txt
index 994355b0cd19..7751704b6db1 100644
--- a/Documentation/memory-barriers.txt
+++ b/Documentation/memory-barriers.txt
@@ -1016,7 +1016,7 @@ There are some more advanced barrier functions:
(*) set_mb(var, value)
- This assigns the value to the variable and then inserts at least a write
+ This assigns the value to the variable and then inserts a full memory
barrier after it, depending on the function. It isn't guaranteed to
insert anything more than a compiler barrier in a UP compilation.
@@ -1898,7 +1898,7 @@ queue before processing any further requests:
smp_wmb();
<A:modify v=2> <C:busy>
<C:queue v=2>
- p = &b; q = p;
+ p = &v; q = p;
<D:request p>
<B:modify p=&v> <D:commit p=&v>
<D:read p>
diff --git a/Documentation/mips/time.README b/Documentation/mips/time.README
index 69ddc5c14b79..a4ce603ed3b3 100644
--- a/Documentation/mips/time.README
+++ b/Documentation/mips/time.README
@@ -38,19 +38,14 @@ The new time code provide the following services:
a) Implements functions required by Linux common code:
time_init
- do_gettimeofday
- do_settimeofday
b) provides an abstraction of RTC and null RTC implementation as default.
extern unsigned long (*rtc_get_time)(void);
extern int (*rtc_set_time)(unsigned long);
- c) a set of gettimeoffset functions for different CPUs and different
- needs.
-
- d) high-level and low-level timer interrupt routines where the timer
- interrupt source may or may not be the CPU timer. The high-level
- routine is dispatched through do_IRQ() while the low-level is
+ c) high-level and low-level timer interrupt routines where the timer
+ interrupt source may or may not be the CPU timer. The high-level
+ routine is dispatched through do_IRQ() while the low-level is
dispatched in assemably code (usually int-handler.S)
@@ -63,7 +58,7 @@ the following functions or values:
a) board_time_init - a function pointer. Invoked at the beginnig of
time_init(). It is optional.
1. (optional) set up RTC routines
- 2. (optional) calibrate and set the mips_counter_frequency
+ 2. (optional) calibrate and set the mips_hpt_frequency
b) plat_timer_setup - a function pointer. Invoked at the end of time_init()
1. (optional) over-ride any decisions made in time_init()
@@ -72,9 +67,8 @@ the following functions or values:
c) (optional) board-specific RTC routines.
- d) (optional) mips_counter_frequency - It must be definied if the board
- is using CPU counter for timer interrupt or it is using fixed rate
- gettimeoffset().
+ d) (optional) mips_hpt_frequency - It must be definied if the board
+ is using CPU counter for timer interrupt.
PORTING GUIDE
@@ -89,22 +83,12 @@ Step 1: decide how you like to implement the time services.
If the answer is no, you need a timer to provide the timer interrupt
at 100 HZ speed.
- You cannot use the fast gettimeoffset functions, i.e.,
-
- unsigned long fixed_rate_gettimeoffset(void);
- unsigned long calibrate_div32_gettimeoffset(void);
- unsigned long calibrate_div64_gettimeoffset(void);
-
- You can use null_gettimeoffset() will gives the same time resolution as
- jiffy. Or you can implement your own gettimeoffset (probably based on
- some ad hoc hardware on your machine.)
-
c) The following sub steps assume your CPU has counter register.
Do you plan to use the CPU counter register as the timer interrupt
or use an exnternal timer?
In order to use CPU counter register as the timer interrupt source, you
- must know the counter speed (mips_counter_frequency). It is usually the
+ must know the counter speed (mips_hpt_frequency). It is usually the
same as the CPU speed or an integral divisor of it.
d) decide on whether you want to use high-level or low-level timer
@@ -121,10 +105,10 @@ Step 3: implement rtc routines, board_time_init() and plat_timer_setup()
if needed.
board_time_init() -
- a) (optional) set up RTC routines,
- b) (optional) calibrate and set the mips_counter_frequency
- (only needed if you intended to use fixed_rate_gettimeoffset
- or use cpu counter as timer interrupt source)
+ a) (optional) set up RTC routines,
+ b) (optional) calibrate and set the mips_hpt_frequency
+ (only needed if you intended to use cpu counter as timer interrupt
+ source)
plat_timer_setup() -
a) (optional) over-write any choices made above by time_init().
@@ -154,8 +138,8 @@ for some of the functions in time.c.
For example, you may define your own timer interrupt routine, which does
some of its own processing and then calls timer_interrupt().
-You can also over-ride any of the built-in functions (gettimeoffset,
-RTC routines and/or timer interrupt routine).
+You can also over-ride any of the built-in functions (RTC routines
+and/or timer interrupt routine).
PORTING NOTES FOR SMP
@@ -187,10 +171,3 @@ You need to decide on your timer interrupt sources.
You can also do the low-level version of those interrupt routines,
following similar dispatching routes described above.
-
-Note about do_gettimeoffset():
-
- It is very likely the CPU counter registers are not sync'ed up in a SMP box.
- Therefore you cannot really use the many of the existing routines that
- are based on CPU counter. You should wirte your own gettimeoffset rouinte
- if you want intra-jiffy resolution.
diff --git a/Documentation/power/interface.txt b/Documentation/power/interface.txt
index a66bec222b16..74311d7e0f3c 100644
--- a/Documentation/power/interface.txt
+++ b/Documentation/power/interface.txt
@@ -30,6 +30,17 @@ testing). The system will support either 'firmware' or 'platform', and
that is known a priori. But, the user may choose 'shutdown' or
'reboot' as alternatives.
+Additionally, /sys/power/disk can be used to turn on one of the two testing
+modes of the suspend-to-disk mechanism: 'testproc' or 'test'. If the
+suspend-to-disk mechanism is in the 'testproc' mode, writing 'disk' to
+/sys/power/state will cause the kernel to disable nonboot CPUs and freeze
+tasks, wait for 5 seconds, unfreeze tasks and enable nonboot CPUs. If it is
+in the 'test' mode, writing 'disk' to /sys/power/state will cause the kernel
+to disable nonboot CPUs and freeze tasks, shrink memory, suspend devices, wait
+for 5 seconds, resume devices, unfreeze tasks and enable nonboot CPUs. Then,
+we are able to look in the log messages and work out, for example, which code
+is being slow and which device drivers are misbehaving.
+
Reading from this file will display what the mode is currently set
to. Writing to this file will accept one of
@@ -37,6 +48,8 @@ to. Writing to this file will accept one of
'platform'
'shutdown'
'reboot'
+ 'testproc'
+ 'test'
It will only change to 'firmware' or 'platform' if the system supports
it.
diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO
index 59d1166d41ee..d684a6ac69a8 100644
--- a/Documentation/s390/CommonIO
+++ b/Documentation/s390/CommonIO
@@ -66,7 +66,7 @@ Command line parameters
When a device is un-ignored, device recognition and sensing is performed and
the device driver will be notified if possible, so the device will become
- available to the system.
+ available to the system. Note that un-ignoring is performed asynchronously.
You can also add ranges of devices to be ignored by piping to
/proc/cio_ignore; "add <device range>, <device range>, ..." will ignore the
diff --git a/Documentation/s390/cds.txt b/Documentation/s390/cds.txt
index d80e5733827d..32a96cc39215 100644
--- a/Documentation/s390/cds.txt
+++ b/Documentation/s390/cds.txt
@@ -174,14 +174,10 @@ read_dev_chars() - Read Device Characteristics
This routine returns the characteristics for the device specified.
-The function is meant to be called with an irq handler in place; that is,
+The function is meant to be called with the device already enabled; that is,
at earliest during set_online() processing.
-While the request is processed synchronously, the device interrupt
-handler is called for final ending status. In case of error situations the
-interrupt handler may recover appropriately. The device irq handler can
-recognize the corresponding interrupts by the interruption parameter be
-0x00524443. The ccw_device must not be locked prior to calling read_dev_chars().
+The ccw_device must not be locked prior to calling read_dev_chars().
The function may be called enabled or disabled.
@@ -410,26 +406,7 @@ individual flag meanings.
Usage Notes :
-Prior to call ccw_device_start() the device driver must assure disabled state,
-i.e. the I/O mask value in the PSW must be disabled. This can be accomplished
-by calling local_save_flags( flags). The current PSW flags are preserved and
-can be restored by local_irq_restore( flags) at a later time.
-
-If the device driver violates this rule while running in a uni-processor
-environment an interrupt might be presented prior to the ccw_device_start()
-routine returning to the device driver main path. In this case we will end in a
-deadlock situation as the interrupt handler will try to obtain the irq
-lock the device driver still owns (see below) !
-
-The driver must assure to hold the device specific lock. This can be
-accomplished by
-
-(i) spin_lock(get_ccwdev_lock(cdev)), or
-(ii) spin_lock_irqsave(get_ccwdev_lock(cdev), flags)
-
-Option (i) should be used if the calling routine is running disabled for
-I/O interrupts (see above) already. Option (ii) obtains the device gate und
-puts the CPU into I/O disabled state by preserving the current PSW flags.
+ccw_device_start() must be called disabled and with the ccw device lock held.
The device driver is allowed to issue the next ccw_device_start() call from
within its interrupt handler already. It is not required to schedule a
@@ -488,7 +465,7 @@ int ccw_device_resume(struct ccw_device *cdev);
cdev - ccw_device the resume operation is requested for
-The resume_IO() function returns:
+The ccw_device_resume() function returns:
0 - suspended channel program is resumed
-EBUSY - status pending
@@ -507,6 +484,8 @@ a long-running channel program or the device might require to initially issue
a halt subchannel (HSCH) I/O command. For those purposes the ccw_device_halt()
command is provided.
+ccw_device_halt() must be called disabled and with the ccw device lock held.
+
int ccw_device_halt(struct ccw_device *cdev,
unsigned long intparm);
@@ -517,7 +496,7 @@ intparm : interruption parameter; value is only used if no I/O
The ccw_device_halt() function returns :
- 0 - successful completion or request successfully initiated
+ 0 - request successfully initiated
-EBUSY - the device is currently busy, or status pending.
-ENODEV - cdev invalid.
-EINVAL - The device is not operational or the ccw device is not online.
@@ -533,6 +512,23 @@ can then perform an appropriate action. Prior to interrupt of an outstanding
read to a network device (with or without PCI flag) a ccw_device_halt()
is required to end the pending operation.
+ccw_device_clear() - Terminage I/O Request Processing
+
+In order to terminate all I/O processing at the subchannel, the clear subchannel
+(CSCH) command is used. It can be issued via ccw_device_clear().
+
+ccw_device_clear() must be called disabled and with the ccw device lock held.
+
+int ccw_device_clear(struct ccw_device *cdev, unsigned long intparm);
+
+cdev: ccw_device the clear operation is requested for
+intparm: interruption parameter (see ccw_device_halt())
+
+The ccw_device_clear() function returns:
+
+ 0 - request successfully initiated
+-ENODEV - cdev invalid
+-EINVAL - The device is not operational or the ccw device is not online.
Miscellaneous Support Routines
diff --git a/Documentation/s390/driver-model.txt b/Documentation/s390/driver-model.txt
index 62c082387aea..77bf450ec39b 100644
--- a/Documentation/s390/driver-model.txt
+++ b/Documentation/s390/driver-model.txt
@@ -239,6 +239,9 @@ status - Can be 'online' or 'offline'.
type - The physical type of the channel path.
+shared - Whether the channel path is shared.
+
+cmg - The channel measurement group.
3. System devices
-----------------
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 138673a907f5..3472d9c4ef1b 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -753,7 +753,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
position_fix - Fix DMA pointer (0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size)
single_cmd - Use single immediate commands to communicate with
codecs (for debugging only)
- disable_msi - Disable Message Signaled Interrupt (MSI)
+ enable_msi - Enable Message Signaled Interrupt (MSI) (default = off)
This module supports one card and autoprobe.
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 89bf8c20a586..0bc7f1e3c9e6 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -86,7 +86,7 @@ valid for 30 seconds.
core_pattern:
core_pattern is used to specify a core dumpfile pattern name.
-. max length 64 characters; default value is "core"
+. max length 128 characters; default value is "core"
. core_pattern is used as a pattern template for the output filename;
certain string patterns (beginning with '%') are substituted with
their actual values.
@@ -105,6 +105,9 @@ core_pattern is used to specify a core dumpfile pattern name.
%h hostname
%e executable filename
%<OTHER> both are dropped
+. If the first character of the pattern is a '|', the kernel will treat
+ the rest of the pattern as a command to run. The core dump will be
+ written to the standard input of that program instead of to a file.
==============================================================
diff --git a/Documentation/usb/usb-serial.txt b/Documentation/usb/usb-serial.txt
index 8dc2bacc8f1f..50436e1663ea 100644
--- a/Documentation/usb/usb-serial.txt
+++ b/Documentation/usb/usb-serial.txt
@@ -428,12 +428,6 @@ Options supported:
See http://www.uuhaus.de/linux/palmconnect.html for up-to-date
information on this driver.
-AIRcable USB Dongle Bluetooth driver
- If there is the cdc_acm driver loaded in the system, you will find that the
- cdc_acm claims the device before AIRcable can. This is simply corrected
- by unloading both modules and then loading the aircable module before
- cdc_acm module
-
Generic Serial driver
If your device is not one of the above listed devices, compatible with
diff --git a/Documentation/video4linux/CARDLIST.cx88 b/Documentation/video4linux/CARDLIST.cx88
index 126e59d935cd..8755b3e7b09e 100644
--- a/Documentation/video4linux/CARDLIST.cx88
+++ b/Documentation/video4linux/CARDLIST.cx88
@@ -51,7 +51,7 @@
50 -> NPG Tech Real TV FM Top 10 [14f1:0842]
51 -> WinFast DTV2000 H [107d:665e]
52 -> Geniatech DVB-S [14f1:0084]
- 53 -> Hauppauge WinTV-HVR3000 TriMode Analog/DVB-S/DVB-T [0070:1404]
+ 53 -> Hauppauge WinTV-HVR3000 TriMode Analog/DVB-S/DVB-T [0070:1404,0070:1400,0070:1401,0070:1402]
54 -> Norwood Micro TV Tuner
55 -> Shenzhen Tungsten Ages Tech TE-DTV-250 / Swann OEM [c180:c980]
56 -> Hauppauge WinTV-HVR1300 DVB-T/Hybrid MPEG Encoder [0070:9600,0070:9601,0070:9602]
diff --git a/Documentation/watchdog/src/watchdog-simple.c b/Documentation/watchdog/src/watchdog-simple.c
index 85cf17c48669..47801bc7e742 100644
--- a/Documentation/watchdog/src/watchdog-simple.c
+++ b/Documentation/watchdog/src/watchdog-simple.c
@@ -1,4 +1,6 @@
+#include <stdio.h>
#include <stdlib.h>
+#include <unistd.h>
#include <fcntl.h>
int main(int argc, const char *argv[]) {