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Len Brown 2006-01-07 03:50:18 -05:00
commit ed03f430cd
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2
.gitignore vendored
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@ -10,6 +10,7 @@
*.a
*.s
*.ko
*.so
*.mod.c
#
@ -23,6 +24,7 @@ Module.symvers
# Generated include files
#
include/asm
include/asm-*/asm-offsets.h
include/config
include/linux/autoconf.h
include/linux/compile.h

1
CREDITS
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@ -1883,6 +1883,7 @@ N: Jaya Kumar
E: jayalk@intworks.biz
W: http://www.intworks.biz
D: Arc monochrome LCD framebuffer driver, x86 reboot fixups
D: pirq addr, CS5535 alsa audio driver
S: Gurgaon, India
S: Kuala Lumpur, Malaysia

1
Documentation/DocBook/usb.tmpl
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@ -253,6 +253,7 @@
!Edrivers/usb/core/urb.c
!Edrivers/usb/core/message.c
!Edrivers/usb/core/file.c
!Edrivers/usb/core/driver.c
!Edrivers/usb/core/usb.c
!Edrivers/usb/core/hub.c
</chapter>

4
Documentation/SubmittingPatches
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@ -158,7 +158,7 @@ Even if the maintainer did not respond in step #4, make sure to ALWAYS
copy the maintainer when you change their code.
For small patches you may want to CC the Trivial Patch Monkey
trivial@rustcorp.com.au set up by Rusty Russell; which collects "trivial"
trivial@kernel.org managed by Adrian Bunk; which collects "trivial"
patches. Trivial patches must qualify for one of the following rules:
Spelling fixes in documentation
Spelling fixes which could break grep(1).
@ -171,7 +171,7 @@ patches. Trivial patches must qualify for one of the following rules:
since people copy, as long as it's trivial)
Any fix by the author/maintainer of the file. (ie. patch monkey
in re-transmission mode)
URL: <http://www.kernel.org/pub/linux/kernel/people/rusty/trivial/>
URL: <http://www.kernel.org/pub/linux/kernel/people/bunk/trivial/>

2
Documentation/arm/00-INDEX
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@ -16,5 +16,7 @@ empeg
- Empeg documentation
mem_alignment
- alignment abort handler documentation
memory.txt
- description of the virtual memory layout
nwfpe
- NWFPE floating point emulator documentation

12
Documentation/block/biodoc.txt
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@ -31,7 +31,7 @@ The following people helped with review comments and inputs for this
document:
Christoph Hellwig <hch@infradead.org>
Arjan van de Ven <arjanv@redhat.com>
Randy Dunlap <rddunlap@osdl.org>
Randy Dunlap <rdunlap@xenotime.net>
Andre Hedrick <andre@linux-ide.org>
The following people helped with fixes/contributions to the bio patches
@ -263,14 +263,8 @@ A flag in the bio structure, BIO_BARRIER is used to identify a barrier i/o.
The generic i/o scheduler would make sure that it places the barrier request and
all other requests coming after it after all the previous requests in the
queue. Barriers may be implemented in different ways depending on the
driver. A SCSI driver for example could make use of ordered tags to
preserve the necessary ordering with a lower impact on throughput. For IDE
this might be two sync cache flush: a pre and post flush when encountering
a barrier write.
There is a provision for queues to indicate what kind of barriers they
can provide. This is as of yet unmerged, details will be added here once it
is in the kernel.
driver. For more details regarding I/O barriers, please read barrier.txt
in this directory.
1.2.2 Request Priority/Latency

58
Documentation/cpu-freq/governors.txt
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@ -27,6 +27,7 @@ Contents:
2.2 Powersave
2.3 Userspace
2.4 Ondemand
2.5 Conservative
3. The Governor Interface in the CPUfreq Core
@ -110,9 +111,64 @@ directory.
The CPUfreq govenor "ondemand" sets the CPU depending on the
current usage. To do this the CPU must have the capability to
switch the frequency very fast.
switch the frequency very quickly. There are a number of sysfs file
accessible parameters:
sampling_rate: measured in uS (10^-6 seconds), this is how often you
want the kernel to look at the CPU usage and to make decisions on
what to do about the frequency. Typically this is set to values of
around '10000' or more.
show_sampling_rate_(min|max): the minimum and maximum sampling rates
available that you may set 'sampling_rate' to.
up_threshold: defines what the average CPU usaged between the samplings
of 'sampling_rate' needs to be for the kernel to make a decision on
whether it should increase the frequency. For example when it is set
to its default value of '80' it means that between the checking
intervals the CPU needs to be on average more than 80% in use to then
decide that the CPU frequency needs to be increased.
sampling_down_factor: this parameter controls the rate that the CPU
makes a decision on when to decrease the frequency. When set to its
default value of '5' it means that at 1/5 the sampling_rate the kernel
makes a decision to lower the frequency. Five "lower rate" decisions
have to be made in a row before the CPU frequency is actually lower.
If set to '1' then the frequency decreases as quickly as it increases,
if set to '2' it decreases at half the rate of the increase.
ignore_nice_load: this parameter takes a value of '0' or '1', when set
to '0' (its default) then all processes are counted towards towards the
'cpu utilisation' value. When set to '1' then processes that are
run with a 'nice' value will not count (and thus be ignored) in the
overal usage calculation. This is useful if you are running a CPU
intensive calculation on your laptop that you do not care how long it
takes to complete as you can 'nice' it and prevent it from taking part
in the deciding process of whether to increase your CPU frequency.
2.5 Conservative
----------------
The CPUfreq governor "conservative", much like the "ondemand"
governor, sets the CPU depending on the current usage. It differs in
behaviour in that it gracefully increases and decreases the CPU speed
rather than jumping to max speed the moment there is any load on the
CPU. This behaviour more suitable in a battery powered environment.
The governor is tweaked in the same manner as the "ondemand" governor
through sysfs with the addition of:
freq_step: this describes what percentage steps the cpu freq should be
increased and decreased smoothly by. By default the cpu frequency will
increase in 5% chunks of your maximum cpu frequency. You can change this
value to anywhere between 0 and 100 where '0' will effectively lock your
CPU at a speed regardless of its load whilst '100' will, in theory, make
it behave identically to the "ondemand" governor.
down_threshold: same as the 'up_threshold' found for the "ondemand"
governor but for the opposite direction. For example when set to its
default value of '20' it means that if the CPU usage needs to be below
20% between samples to have the frequency decreased.
3. The Governor Interface in the CPUfreq Core
=============================================

50
Documentation/dvb/README.dvb-usb
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@ -50,12 +50,12 @@ http://www.linuxtv.org/wiki/index.php/DVB_USB
0. History & News:
2005-06-30 - added support for WideView WT-220U (Thanks to Steve Chang)
2005-05-30 - added basic isochronous support to the dvb-usb-framework
added support for Conexant Hybrid reference design and Nebula DigiTV USB
added support for Conexant Hybrid reference design and Nebula DigiTV USB
2005-04-17 - all dibusb devices ported to make use of the dvb-usb-framework
2005-04-02 - re-enabled and improved remote control code.
2005-03-31 - ported the Yakumo/Hama/Typhoon DVB-T USB2.0 device to dvb-usb.
2005-03-30 - first commit of the dvb-usb-module based on the dibusb-source. First device is a new driver for the
TwinhanDTV Alpha / MagicBox II USB2.0-only DVB-T device.
TwinhanDTV Alpha / MagicBox II USB2.0-only DVB-T device.
(change from dvb-dibusb to dvb-usb)
2005-03-28 - added support for the AVerMedia AverTV DVB-T USB2.0 device (Thanks to Glen Harris and Jiun-Kuei Jung, AVerMedia)
@ -64,50 +64,50 @@ http://www.linuxtv.org/wiki/index.php/DVB_USB
2005-02-02 - added support for the Hauppauge Win-TV Nova-T USB2
2005-01-31 - distorted streaming is gone for USB1.1 devices
2005-01-13 - moved the mirrored pid_filter_table back to dvb-dibusb
- first almost working version for HanfTek UMT-010
- found out, that Yakumo/HAMA/Typhoon are predecessors of the HanfTek UMT-010
- first almost working version for HanfTek UMT-010
- found out, that Yakumo/HAMA/Typhoon are predecessors of the HanfTek UMT-010
2005-01-10 - refactoring completed, now everything is very delightful
- tuner quirks for some weird devices (Artec T1 AN2235 device has sometimes a
Panasonic Tuner assembled). Tunerprobing implemented. Thanks a lot to Gunnar Wittich.
- tuner quirks for some weird devices (Artec T1 AN2235 device has sometimes a
Panasonic Tuner assembled). Tunerprobing implemented. Thanks a lot to Gunnar Wittich.
2004-12-29 - after several days of struggling around bug of no returning URBs fixed.
2004-12-26 - refactored the dibusb-driver, splitted into separate files
- i2c-probing enabled
- i2c-probing enabled
2004-12-06 - possibility for demod i2c-address probing
- new usb IDs (Compro, Artec)
- new usb IDs (Compro, Artec)
2004-11-23 - merged changes from DiB3000MC_ver2.1
- revised the debugging
- possibility to deliver the complete TS for USB2.0
- revised the debugging
- possibility to deliver the complete TS for USB2.0
2004-11-21 - first working version of the dib3000mc/p frontend driver.
2004-11-12 - added additional remote control keys. Thanks to Uwe Hanke.
2004-11-07 - added remote control support. Thanks to David Matthews.
2004-11-05 - added support for a new devices (Grandtec/Avermedia/Artec)
- merged my changes (for dib3000mb/dibusb) to the FE_REFACTORING, because it became HEAD
- moved transfer control (pid filter, fifo control) from usb driver to frontend, it seems
better settled there (added xfer_ops-struct)
- created a common files for frontends (mc/p/mb)
- merged my changes (for dib3000mb/dibusb) to the FE_REFACTORING, because it became HEAD
- moved transfer control (pid filter, fifo control) from usb driver to frontend, it seems
better settled there (added xfer_ops-struct)
- created a common files for frontends (mc/p/mb)
2004-09-28 - added support for a new device (Unkown, vendor ID is Hyper-Paltek)
2004-09-20 - added support for a new device (Compro DVB-U2000), thanks
to Amaury Demol for reporting
- changed usb TS transfer method (several urbs, stopping transfer
before setting a new pid)
to Amaury Demol for reporting
- changed usb TS transfer method (several urbs, stopping transfer
before setting a new pid)
2004-09-13 - added support for a new device (Artec T1 USB TVBOX), thanks
to Christian Motschke for reporting
to Christian Motschke for reporting
2004-09-05 - released the dibusb device and dib3000mb-frontend driver
(old news for vp7041.c)
2004-07-15 - found out, by accident, that the device has a TUA6010XS for
PLL
PLL
2004-07-12 - figured out, that the driver should also work with the
CTS Portable (Chinese Television System)
CTS Portable (Chinese Television System)
2004-07-08 - firmware-extraction-2.422-problem solved, driver is now working
properly with firmware extracted from 2.422
- #if for 2.6.4 (dvb), compile issue
- changed firmware handling, see vp7041.txt sec 1.1
properly with firmware extracted from 2.422
- #if for 2.6.4 (dvb), compile issue
- changed firmware handling, see vp7041.txt sec 1.1
2004-07-02 - some tuner modifications, v0.1, cleanups, first public
2004-06-28 - now using the dvb_dmx_swfilter_packets, everything
runs fine now
runs fine now
2004-06-27 - able to watch and switching channels (pre-alpha)
- no section filtering yet
- no section filtering yet
2004-06-06 - first TS received, but kernel oops :/
2004-05-14 - firmware loader is working
2004-05-11 - start writing the driver

2
Documentation/dvb/README.flexcop
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@ -174,7 +174,7 @@ Debugging
Everything which is identical in the following table, can be put into a common
flexcop-module.
PCI USB
PCI USB
-------------------------------------------------------------------------------
Different:
Register access: accessing IO memory USB control message

2
Documentation/dvb/avermedia.txt
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@ -1,6 +1,6 @@
HOWTO: Get An Avermedia DVB-T working under Linux
______________________________________________
______________________________________________
Table of Contents
Assumptions and Introduction

8
Documentation/dvb/cards.txt
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@ -16,7 +16,7 @@ Hardware supported by the linuxtv.org DVB drivers
shielding, and the whole metal box has its own part number.
o Frontends drivers:
o Frontends drivers:
- dvb_dummy_fe: for testing...
DVB-S:
- ves1x93 : Alps BSRV2 (ves1893 demodulator) and dbox2 (ves1993)
@ -24,7 +24,7 @@ o Frontends drivers:
- grundig_29504-491 : Grundig 29504-491 (Philips TDA8083 demodulator), tsa5522 PLL
- mt312 : Zarlink mt312 or Mitel vp310 demodulator, sl1935 or tsa5059 PLL
- stv0299 : Alps BSRU6 (tsa5059 PLL), LG TDQB-S00x (tsa5059 PLL),
LG TDQF-S001F (sl1935 PLL), Philips SU1278 (tua6100 PLL),
LG TDQF-S001F (sl1935 PLL), Philips SU1278 (tua6100 PLL),
Philips SU1278SH (tsa5059 PLL), Samsung TBMU24112IMB
DVB-C:
- ves1820 : various (ves1820 demodulator, sp5659c or spXXXX PLL)
@ -35,8 +35,8 @@ o Frontends drivers:
- grundig_29504-401 : Grundig 29504-401 (LSI L64781 demodulator), tsa5060 PLL
- tda1004x : Philips tda10045h (td1344 or tdm1316l PLL)
- nxt6000 : Alps TDME7 (MITEL SP5659 PLL), Alps TDED4 (TI ALP510 PLL),
Comtech DVBT-6k07 (SP5730 PLL)
(NxtWave Communications NXT6000 demodulator)
Comtech DVBT-6k07 (SP5730 PLL)
(NxtWave Communications NXT6000 demodulator)
- sp887x : Microtune 7202D
- dib3000mb : DiBcom 3000-MB demodulator
DVB-S/C/T:

4
Documentation/dvb/contributors.txt
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@ -15,7 +15,7 @@ Michael Holzt <kju@debian.org>
Diego Picciani <d.picciani@novacomp.it>
for CyberLogin for Linux which allows logging onto EON
(in case you are wondering where CyberLogin is, EON changed its login
(in case you are wondering where CyberLogin is, EON changed its login
procedure and CyberLogin is no longer used.)
Martin Schaller <martin@smurf.franken.de>
@ -57,7 +57,7 @@ Augusto Cardoso <augusto@carhil.net>
Davor Emard <emard@softhome.net>
for his work on the budget drivers, the demux code,
the module unloading problems, ...
Hans-Frieder Vogt <hfvogt@arcor.de>
for his work on calculating and checking the crc's for the
TechnoTrend/Hauppauge DEC driver firmware

4
Documentation/dvb/readme.txt
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@ -20,7 +20,7 @@ http://linuxtv.org/downloads/
What's inside this directory:
"cards.txt"
"cards.txt"
contains a list of supported hardware.
"contributors.txt"
@ -37,7 +37,7 @@ that require it.
contains detailed informations about the
TT DEC2000/DEC3000 USB DVB hardware.
"bt8xx.txt"
"bt8xx.txt"
contains detailed installation instructions for the
various bt8xx based "budget" DVB cards
(Nebula, Pinnacle PCTV, Twinhan DST)

20
Documentation/feature-removal-schedule.txt
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@ -47,17 +47,6 @@ Who: Paul E. McKenney <paulmck@us.ibm.com>
---------------------------
What: IEEE1394 Audio and Music Data Transmission Protocol driver,
Connection Management Procedures driver
When: November 2005
Files: drivers/ieee1394/{amdtp,cmp}*
Why: These are incomplete, have never worked, and are better implemented
in userland via raw1394 (see http://freebob.sourceforge.net/ for
example.)
Who: Jody McIntyre <scjody@steamballoon.com>
---------------------------
What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
When: November 2005
Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
@ -82,15 +71,6 @@ Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
---------------------------
What: i2c sysfs name change: in1_ref, vid deprecated in favour of cpu0_vid
When: November 2005
Files: drivers/i2c/chips/adm1025.c, drivers/i2c/chips/adm1026.c
Why: Match the other drivers' name for the same function, duplicate names
will be available until removal of old names.
Who: Grant Coady <gcoady@gmail.com>
---------------------------
What: remove EXPORT_SYMBOL(panic_timeout)
When: April 2006
Files: kernel/panic.c

8
Documentation/filesystems/00-INDEX
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@ -12,14 +12,16 @@ cifs.txt
- description of the CIFS filesystem
coda.txt
- description of the CODA filesystem.
configfs/
- directory containing configfs documentation and example code.
cramfs.txt
- info on the cram filesystem for small storage (ROMs etc)
devfs/
- directory containing devfs documentation.
dlmfs.txt
- info on the userspace interface to the OCFS2 DLM.
ext2.txt
- info, mount options and specifications for the Ext2 filesystem.
fat_cvf.txt
- info on the Compressed Volume Files extension to the FAT filesystem
hpfs.txt
- info and mount options for the OS/2 HPFS.
isofs.txt
@ -32,6 +34,8 @@ ntfs.txt
- info and mount options for the NTFS filesystem (Windows NT).
proc.txt
- info on Linux's /proc filesystem.
ocfs2.txt
- info and mount options for the OCFS2 clustered filesystem.
romfs.txt
- Description of the ROMFS filesystem.
smbfs.txt

434
Documentation/filesystems/configfs/configfs.txt Normal file
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@ -0,0 +1,434 @@
configfs - Userspace-driven kernel object configuation.
Joel Becker <joel.becker@oracle.com>
Updated: 31 March 2005
Copyright (c) 2005 Oracle Corporation,
Joel Becker <joel.becker@oracle.com>
[What is configfs?]
configfs is a ram-based filesystem that provides the converse of
sysfs's functionality. Where sysfs is a filesystem-based view of
kernel objects, configfs is a filesystem-based manager of kernel
objects, or config_items.
With sysfs, an object is created in kernel (for example, when a device
is discovered) and it is registered with sysfs. Its attributes then
appear in sysfs, allowing userspace to read the attributes via
readdir(3)/read(2). It may allow some attributes to be modified via
write(2). The important point is that the object is created and
destroyed in kernel, the kernel controls the lifecycle of the sysfs
representation, and sysfs is merely a window on all this.
A configfs config_item is created via an explicit userspace operation:
mkdir(2). It is destroyed via rmdir(2). The attributes appear at
mkdir(2) time, and can be read or modified via read(2) and write(2).
As with sysfs, readdir(3) queries the list of items and/or attributes.
symlink(2) can be used to group items together. Unlike sysfs, the
lifetime of the representation is completely driven by userspace. The
kernel modules backing the items must respond to this.
Both sysfs and configfs can and should exist together on the same
system. One is not a replacement for the other.
[Using configfs]
configfs can be compiled as a module or into the kernel. You can access
it by doing
mount -t configfs none /config
The configfs tree will be empty unless client modules are also loaded.
These are modules that register their item types with configfs as
subsystems. Once a client subsystem is loaded, it will appear as a
subdirectory (or more than one) under /config. Like sysfs, the
configfs tree is always there, whether mounted on /config or not.
An item is created via mkdir(2). The item's attributes will also
appear at this time. readdir(3) can determine what the attributes are,
read(2) can query their default values, and write(2) can store new
values. Like sysfs, attributes should be ASCII text files, preferably
with only one value per file. The same efficiency caveats from sysfs
apply. Don't mix more than one attribute in one attribute file.
Like sysfs, configfs expects write(2) to store the entire buffer at
once. When writing to configfs attributes, userspace processes should
first read the entire file, modify the portions they wish to change, and
then write the entire buffer back. Attribute files have a maximum size
of one page (PAGE_SIZE, 4096 on i386).
When an item needs to be destroyed, remove it with rmdir(2). An
item cannot be destroyed if any other item has a link to it (via
symlink(2)). Links can be removed via unlink(2).
[Configuring FakeNBD: an Example]
Imagine there's a Network Block Device (NBD) driver that allows you to
access remote block devices. Call it FakeNBD. FakeNBD uses configfs
for its configuration. Obviously, there will be a nice program that
sysadmins use to configure FakeNBD, but somehow that program has to tell
the driver about it. Here's where configfs comes in.
When the FakeNBD driver is loaded, it registers itself with configfs.
readdir(3) sees this just fine:
# ls /config
fakenbd
A fakenbd connection can be created with mkdir(2). The name is
arbitrary, but likely the tool will make some use of the name. Perhaps
it is a uuid or a disk name:
# mkdir /config/fakenbd/disk1
# ls /config/fakenbd/disk1
target device rw
The target attribute contains the IP address of the server FakeNBD will
connect to. The device attribute is the device on the server.
Predictably, the rw attribute determines whether the connection is
read-only or read-write.
# echo 10.0.0.1 > /config/fakenbd/disk1/target
# echo /dev/sda1 > /config/fakenbd/disk1/device
# echo 1 > /config/fakenbd/disk1/rw
That's it. That's all there is. Now the device is configured, via the
shell no less.
[Coding With configfs]
Every object in configfs is a config_item. A config_item reflects an
object in the subsystem. It has attributes that match values on that
object. configfs handles the filesystem representation of that object
and its attributes, allowing the subsystem to ignore all but the
basic show/store interaction.
Items are created and destroyed inside a config_group. A group is a
collection of items that share the same attributes and operations.
Items are created by mkdir(2) and removed by rmdir(2), but configfs
handles that. The group has a set of operations to perform these tasks
A subsystem is the top level of a client module. During initialization,
the client module registers the subsystem with configfs, the subsystem
appears as a directory at the top of the configfs filesystem. A
subsystem is also a config_group, and can do everything a config_group
can.
[struct config_item]
struct config_item {
char *ci_name;
char ci_namebuf[UOBJ_NAME_LEN];
struct kref ci_kref;
struct list_head ci_entry;
struct config_item *ci_parent;
struct config_group *ci_group;
struct config_item_type *ci_type;
struct dentry *ci_dentry;
};
void config_item_init(struct config_item *);
void config_item_init_type_name(struct config_item *,
const char *name,
struct config_item_type *type);
struct config_item *config_item_get(struct config_item *);
void config_item_put(struct config_item *);
Generally, struct config_item is embedded in a container structure, a
structure that actually represents what the subsystem is doing. The
config_item portion of that structure is how the object interacts with
configfs.
Whether statically defined in a source file or created by a parent
config_group, a config_item must have one of the _init() functions
called on it. This initializes the reference count and sets up the
appropriate fields.
All users of a config_item should have a reference on it via
config_item_get(), and drop the reference when they are done via
config_item_put().
By itself, a config_item cannot do much more than appear in configfs.
Usually a subsystem wants the item to display and/or store attributes,
among other things. For that, it needs a type.
[struct config_item_type]
struct configfs_item_operations {
void (*release)(struct config_item *);
ssize_t (*show_attribute)(struct config_item *,
struct configfs_attribute *,
char *);
ssize_t (*store_attribute)(struct config_item *,
struct configfs_attribute *,
const char *, size_t);
int (*allow_link)(struct config_item *src,
struct config_item *target);
int (*drop_link)(struct config_item *src,
struct config_item *target);
};
struct config_item_type {
struct module *ct_owner;
struct configfs_item_operations *ct_item_ops;
struct configfs_group_operations *ct_group_ops;
struct configfs_attribute **ct_attrs;
};
The most basic function of a config_item_type is to define what
operations can be performed on a config_item. All items that have been
allocated dynamically will need to provide the ct_item_ops->release()
method. This method is called when the config_item's reference count
reaches zero. Items that wish to display an attribute need to provide
the ct_item_ops->show_attribute() method. Similarly, storing a new
attribute value uses the store_attribute() method.
[struct configfs_attribute]
struct configfs_attribute {
char *ca_name;
struct module *ca_owner;
mode_t ca_mode;
};
When a config_item wants an attribute to appear as a file in the item's
configfs directory, it must define a configfs_attribute describing it.
It then adds the attribute to the NULL-terminated array
config_item_type->ct_attrs. When the item appears in configfs, the
attribute file will appear with the configfs_attribute->ca_name
filename. configfs_attribute->ca_mode specifies the file permissions.
If an attribute is readable and the config_item provides a
ct_item_ops->show_attribute() method, that method will be called
whenever userspace asks for a read(2) on the attribute. The converse
will happen for write(2).
[struct config_group]
A config_item cannot live in a vaccum. The only way one can be created
is via mkdir(2) on a config_group. This will trigger creation of a
child item.
struct config_group {
struct config_item cg_item;
struct list_head cg_children;
struct configfs_subsystem *cg_subsys;
struct config_group **default_groups;
};
void config_group_init(struct config_group *group);
void config_group_init_type_name(struct config_group *group,
const char *name,
struct config_item_type *type);
The config_group structure contains a config_item. Properly configuring
that item means that a group can behave as an item in its own right.
However, it can do more: it can create child items or groups. This is
accomplished via the group operations specified on the group's
config_item_type.
struct configfs_group_operations {
struct config_item *(*make_item)(struct config_group *group,
const char *name);
struct config_group *(*make_group)(struct config_group *group,
const char *name);
int (*commit_item)(struct config_item *item);
void (*drop_item)(struct config_group *group,
struct config_item *item);
};
A group creates child items by providing the
ct_group_ops->make_item() method. If provided, this method is called from mkdir(2) in the group's directory. The subsystem allocates a new
config_item (or more likely, its container structure), initializes it,
and returns it to configfs. Configfs will then populate the filesystem
tree to reflect the new item.
If the subsystem wants the child to be a group itself, the subsystem
provides ct_group_ops->make_group(). Everything else behaves the same,
using the group _init() functions on the group.
Finally, when userspace calls rmdir(2) on the item or group,
ct_group_ops->drop_item() is called. As a config_group is also a
config_item, it is not necessary for a seperate drop_group() method.
The subsystem must config_item_put() the reference that was initialized
upon item allocation. If a subsystem has no work to do, it may omit
the ct_group_ops->drop_item() method, and configfs will call
config_item_put() on the item on behalf of the subsystem.
IMPORTANT: drop_item() is void, and as such cannot fail. When rmdir(2)
is called, configfs WILL remove the item from the filesystem tree
(assuming that it has no children to keep it busy). The subsystem is
responsible for responding to this. If the subsystem has references to
the item in other threads, the memory is safe. It may take some time
for the item to actually disappear from the subsystem's usage. But it
is gone from configfs.
A config_group cannot be removed while it still has child items. This
is implemented in the configfs rmdir(2) code. ->drop_item() will not be
called, as the item has not been dropped. rmdir(2) will fail, as the
directory is not empty.
[struct configfs_subsystem]
A subsystem must register itself, ususally at module_init time. This
tells configfs to make the subsystem appear in the file tree.
struct configfs_subsystem {
struct config_group su_group;
struct semaphore su_sem;
};
int configfs_register_subsystem(struct configfs_subsystem *subsys);
void configfs_unregister_subsystem(struct configfs_subsystem *subsys);
A subsystem consists of a toplevel config_group and a semaphore.
The group is where child config_items are created. For a subsystem,
this group is usually defined statically. Before calling
configfs_register_subsystem(), the subsystem must have initialized the
group via the usual group _init() functions, and it must also have
initialized the semaphore.
When the register call returns, the subsystem is live, and it
will be visible via configfs. At that point, mkdir(2) can be called and
the subsystem must be ready for it.
[An Example]
The best example of these basic concepts is the simple_children
subsystem/group and the simple_child item in configfs_example.c It
shows a trivial object displaying and storing an attribute, and a simple
group creating and destroying these children.
[Hierarchy Navigation and the Subsystem Semaphore]
There is an extra bonus that configfs provides. The config_groups and
config_items are arranged in a hierarchy due to the fact that they
appear in a filesystem. A subsystem is NEVER to touch the filesystem
parts, but the subsystem might be interested in this hierarchy. For
this reason, the hierarchy is mirrored via the config_group->cg_children
and config_item->ci_parent structure members.
A subsystem can navigate the cg_children list and the ci_parent pointer
to see the tree created by the subsystem. This can race with configfs'
management of the hierarchy, so configfs uses the subsystem semaphore to
protect modifications. Whenever a subsystem wants to navigate the
hierarchy, it must do so under the protection of the subsystem
semaphore.
A subsystem will be prevented from acquiring the semaphore while a newly
allocated item has not been linked into this hierarchy. Similarly, it
will not be able to acquire the semaphore while a dropping item has not
yet been unlinked. This means that an item's ci_parent pointer will
never be NULL while the item is in configfs, and that an item will only
be in its parent's cg_children list for the same duration. This allows
a subsystem to trust ci_parent and cg_children while they hold the
semaphore.
[Item Aggregation Via symlink(2)]
configfs provides a simple group via the group->item parent/child
relationship. Often, however, a larger environment requires aggregation
outside of the parent/child connection. This is implemented via
symlink(2).
A config_item may provide the ct_item_ops->allow_link() and
ct_item_ops->drop_link() methods. If the ->allow_link() method exists,
symlink(2) may be called with the config_item as the source of the link.
These links are only allowed between configfs config_items. Any
symlink(2) attempt outside the configfs filesystem will be denied.
When symlink(2) is called, the source config_item's ->allow_link()
method is called with itself and a target item. If the source item
allows linking to target item, it returns 0. A source item may wish to
reject a link if it only wants links to a certain type of object (say,
in its own subsystem).
When unlink(2) is called on the symbolic link, the source item is
notified via the ->drop_link() method. Like the ->drop_item() method,
this is a void function and cannot return failure. The subsystem is
responsible for responding to the change.
A config_item cannot be removed while it links to any other item, nor
can it be removed while an item links to it. Dangling symlinks are not
allowed in configfs.
[Automatically Created Subgroups]
A new config_group may want to have two types of child config_items.
While this could be codified by magic names in ->make_item(), it is much
more explicit to have a method whereby userspace sees this divergence.
Rather than have a group where some items behave differently than
others, configfs provides a method whereby one or many subgroups are
automatically created inside the parent at its creation. Thus,
mkdir("parent) results in "parent", "parent/subgroup1", up through
"parent/subgroupN". Items of type 1 can now be created in
"parent/subgroup1", and items of type N can be created in
"parent/subgroupN".
These automatic subgroups, or default groups, do not preclude other
children of the parent group. If ct_group_ops->make_group() exists,
other child groups can be created on the parent group directly.
A configfs subsystem specifies default groups by filling in the
NULL-terminated array default_groups on the config_group structure.
Each group in that array is populated in the configfs tree at the same
time as the parent group. Similarly, they are removed at the same time
as the parent. No extra notification is provided. When a ->drop_item()
method call notifies the subsystem the parent group is going away, it
also means every default group child associated with that parent group.
As a consequence of this, default_groups cannot be removed directly via
rmdir(2). They also are not considered when rmdir(2) on the parent
group is checking for children.
[Committable Items]
NOTE: Committable items are currently unimplemented.
Some config_items cannot have a valid initial state. That is, no
default values can be specified for the item's attributes such that the
item can do its work. Userspace must configure one or more attributes,
after which the subsystem can start whatever entity this item
represents.
Consider the FakeNBD device from above. Without a target address *and*
a target device, the subsystem has no idea what block device to import.
The simple example assumes that the subsystem merely waits until all the
appropriate attributes are configured, and then connects. This will,
indeed, work, but now every attribute store must check if the attributes
are initialized. Every attribute store must fire off the connection if
that condition is met.
Far better would be an explicit action notifying the subsystem that the
config_item is ready to go. More importantly, an explicit action allows
the subsystem to provide feedback as to whether the attibutes are
initialized in a way that makes sense. configfs provides this as
committable items.
configfs still uses only normal filesystem operations. An item is
committed via rename(2). The item is moved from a directory where it
can be modified to a directory where it cannot.
Any group that provides the ct_group_ops->commit_item() method has
committable items. When this group appears in configfs, mkdir(2) will
not work directly in the group. Instead, the group will have two
subdirectories: "live" and "pending". The "live" directory does not
support mkdir(2) or rmdir(2) either. It only allows rename(2). The
"pending" directory does allow mkdir(2) and rmdir(2). An item is
created in the "pending" directory. Its attributes can be modified at
will. Userspace commits the item by renaming it into the "live"
directory. At this point, the subsystem recieves the ->commit_item()
callback. If all required attributes are filled to satisfaction, the
method returns zero and the item is moved to the "live" directory.
As rmdir(2) does not work in the "live" directory, an item must be
shutdown, or "uncommitted". Again, this is done via rename(2), this
time from the "live" directory back to the "pending" one. The subsystem
is notified by the ct_group_ops->uncommit_object() method.

474
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@ -0,0 +1,474 @@
/*
* vim: noexpandtab ts=8 sts=0 sw=8:
*
* configfs_example.c - This file is a demonstration module containing
* a number of configfs subsystems.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* 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.
*
* 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 021110-1307, USA.
*
* Based on sysfs:
* sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel
*
* configfs Copyright (C) 2005 Oracle. All rights reserved.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/configfs.h>
/*
* 01-childless
*
* This first example is a childless subsystem. It cannot create
* any config_items. It just has attributes.
*
* Note that we are enclosing the configfs_subsystem inside a container.
* This is not necessary if a subsystem has no attributes directly
* on the subsystem. See the next example, 02-simple-children, for
* such a subsystem.
*/
struct childless {
struct configfs_subsystem subsys;
int showme;
int storeme;
};
struct childless_attribute {
struct configfs_attribute attr;
ssize_t (*show)(struct childless *, char *);
ssize_t (*store)(struct childless *, const char *, size_t);
};
static inline struct childless *to_childless(struct config_item *item)
{
return item ? container_of(to_configfs_subsystem(to_config_group(item)), struct childless, subsys) : NULL;
}
static ssize_t childless_showme_read(struct childless *childless,
char *page)
{
ssize_t pos;
pos = sprintf(page, "%d\n", childless->showme);
childless->showme++;
return pos;
}
static ssize_t childless_storeme_read(struct childless *childless,
char *page)
{
return sprintf(page, "%d\n", childless->storeme);
}
static ssize_t childless_storeme_write(struct childless *childless,
const char *page,
size_t count)
{
unsigned long tmp;
char *p = (char *) page;
tmp = simple_strtoul(p, &p, 10);
if (!p || (*p && (*p != '\n')))
return -EINVAL;
if (tmp > INT_MAX)
return -ERANGE;
childless->storeme = tmp;
return count;
}
static ssize_t childless_description_read(struct childless *childless,
char *page)
{
return sprintf(page,
"[01-childless]\n"
"\n"
"The childless subsystem is the simplest possible subsystem in\n"
"configfs. It does not support the creation of child config_items.\n"
"It only has a few attributes. In fact, it isn't much different\n"
"than a directory in /proc.\n");
}
static struct childless_attribute childless_attr_showme = {
.attr = { .ca_owner = THIS_MODULE, .ca_name = "showme", .ca_mode = S_IRUGO },
.show = childless_showme_read,
};
static struct childless_attribute childless_attr_storeme = {
.attr = { .ca_owner = THIS_MODULE, .ca_name = "storeme", .ca_mode = S_IRUGO | S_IWUSR },
.show = childless_storeme_read,
.store = childless_storeme_write,
};
static struct childless_attribute childless_attr_description = {
.attr = { .ca_owner = THIS_MODULE, .ca_name = "description", .ca_mode = S_IRUGO },
.show = childless_description_read,
};
static struct configfs_attribute *childless_attrs[] = {
&childless_attr_showme.attr,
&childless_attr_storeme.attr,
&childless_attr_description.attr,
NULL,
};
static ssize_t childless_attr_show(struct config_item *item,
struct configfs_attribute *attr,
char *page)
{
struct childless *childless = to_childless(item);
struct childless_attribute *childless_attr =
container_of(attr, struct childless_attribute, attr);
ssize_t ret = 0;
if (childless_attr->show)
ret = childless_attr->show(childless, page);
return ret;
}
static ssize_t childless_attr_store(struct config_item *item,
struct configfs_attribute *attr,
const char *page, size_t count)
{
struct childless *childless = to_childless(item);
struct childless_attribute *childless_attr =
container_of(attr, struct childless_attribute, attr);
ssize_t ret = -EINVAL;
if (childless_attr->store)
ret = childless_attr->store(childless, page, count);
return ret;
}
static struct configfs_item_operations childless_item_ops = {
.show_attribute = childless_attr_show,
.store_attribute = childless_attr_store,
};
static struct config_item_type childless_type = {
.ct_item_ops = &childless_item_ops,
.ct_attrs = childless_attrs,
.ct_owner = THIS_MODULE,
};
static struct childless childless_subsys = {
.subsys = {
.su_group = {
.cg_item = {
.ci_namebuf = "01-childless",
.ci_type = &childless_type,
},
},
},
};
/* ----------------------------------------------------------------- */
/*
* 02-simple-children
*
* This example merely has a simple one-attribute child. Note that
* there is no extra attribute structure, as the child's attribute is
* known from the get-go. Also, there is no container for the
* subsystem, as it has no attributes of its own.
*/
struct simple_child {
struct config_item item;
int storeme;
};
static inline struct simple_child *to_simple_child(struct config_item *item)
{
return item ? container_of(item, struct simple_child, item) : NULL;
}
static struct configfs_attribute simple_child_attr_storeme = {
.ca_owner = THIS_MODULE,
.ca_name = "storeme",
.ca_mode = S_IRUGO | S_IWUSR,
};
static struct configfs_attribute *simple_child_attrs[] = {
&simple_child_attr_storeme,
NULL,
};
static ssize_t simple_child_attr_show(struct config_item *item,
struct configfs_attribute *attr,
char *page)
{
ssize_t count;
struct simple_child *simple_child = to_simple_child(item);
count = sprintf(page, "%d\n", simple_child->storeme);
return count;
}
static ssize_t simple_child_attr_store(struct config_item *item,
struct configfs_attribute *attr,
const char *page, size_t count)
{
struct simple_child *simple_child = to_simple_child(item);
unsigned long tmp;
char *p = (char *) page;
tmp = simple_strtoul(p, &p, 10);
if (!p || (*p && (*p != '\n')))
return -EINVAL;
if (tmp > INT_MAX)
return -ERANGE;
simple_child->storeme = tmp;
return count;
}
static void simple_child_release(struct config_item *item)
{
kfree(to_simple_child(item));
}
static struct configfs_item_operations simple_child_item_ops = {
.release = simple_child_release,
.show_attribute = simple_child_attr_show,
.store_attribute = simple_child_attr_store,
};
static struct config_item_type simple_child_type = {
.ct_item_ops = &simple_child_item_ops,
.ct_attrs = simple_child_attrs,
.ct_owner = THIS_MODULE,
};
static struct config_item *simple_children_make_item(struct config_group *group, const char *name)
{
struct simple_child *simple_child;
simple_child = kmalloc(sizeof(struct simple_child), GFP_KERNEL);
if (!simple_child)
return NULL;
memset(simple_child, 0, sizeof(struct simple_child));
config_item_init_type_name(&simple_child->item, name,
&simple_child_type);
simple_child->storeme = 0;
return &simple_child->item;
}
static struct configfs_attribute simple_children_attr_description = {
.ca_owner = THIS_MODULE,
.ca_name = "description",
.ca_mode = S_IRUGO,
};
static struct configfs_attribute *simple_children_attrs[] = {
&simple_children_attr_description,
NULL,
};
static ssize_t simple_children_attr_show(struct config_item *item,
struct configfs_attribute *attr,
char *page)
{
return sprintf(page,
"[02-simple-children]\n"
"\n"
"This subsystem allows the creation of child config_items. These\n"
"items have only one attribute that is readable and writeable.\n");
}
static struct configfs_item_operations simple_children_item_ops = {
.show_attribute = simple_children_attr_show,
};
/*
* Note that, since no extra work is required on ->drop_item(),
* no ->drop_item() is provided.
*/
static struct configfs_group_operations simple_children_group_ops = {
.make_item = simple_children_make_item,
};
static struct config_item_type simple_children_type = {
.ct_item_ops = &simple_children_item_ops,
.ct_group_ops = &simple_children_group_ops,
.ct_attrs = simple_children_attrs,
};
static struct configfs_subsystem simple_children_subsys = {
.su_group = {
.cg_item = {
.ci_namebuf = "02-simple-children",
.ci_type = &simple_children_type,
},
},
};
/* ----------------------------------------------------------------- */
/*
* 03-group-children
*
* This example reuses the simple_children group from above. However,
* the simple_children group is not the subsystem itself, it is a
* child of the subsystem. Creation of a group in the subsystem creates
* a new simple_children group. That group can then have simple_child
* children of its own.
*/
struct simple_children {
struct config_group group;
};
static struct config_group *group_children_make_group(struct config_group *group, const char *name)
{
struct simple_children *simple_children;
simple_children = kmalloc(sizeof(struct simple_children),
GFP_KERNEL);
if (!simple_children)
return NULL;
memset(simple_children, 0, sizeof(struct simple_children));
config_group_init_type_name(&simple_children->group, name,
&simple_children_type);
return &simple_children->group;
}
static struct configfs_attribute group_children_attr_description = {
.ca_owner = THIS_MODULE,
.ca_name = "description",
.ca_mode = S_IRUGO,
};
static struct configfs_attribute *group_children_attrs[] = {
&group_children_attr_description,
NULL,
};
static ssize_t group_children_attr_show(struct config_item *item,
struct configfs_attribute *attr,
char *page)
{
return sprintf(page,
"[03-group-children]\n"
"\n"
"This subsystem allows the creation of child config_groups. These\n"
"groups are like the subsystem simple-children.\n");
}
static struct configfs_item_operations group_children_item_ops = {
.show_attribute = group_children_attr_show,
};
/*
* Note that, since no extra work is required on ->drop_item(),
* no ->drop_item() is provided.
*/
static struct configfs_group_operations group_children_group_ops = {
.make_group = group_children_make_group,
};
static struct config_item_type group_children_type = {
.ct_item_ops = &group_children_item_ops,
.ct_group_ops = &group_children_group_ops,
.ct_attrs = group_children_attrs,
};
static struct configfs_subsystem group_children_subsys = {
.su_group = {
.cg_item = {
.ci_namebuf = "03-group-children",
.ci_type = &group_children_type,
},
},
};
/* ----------------------------------------------------------------- */
/*
* We're now done with our subsystem definitions.
* For convenience in this module, here's a list of them all. It
* allows the init function to easily register them. Most modules
* will only have one subsystem, and will only call register_subsystem
* on it directly.
*/
static struct configfs_subsystem *example_subsys[] = {
&childless_subsys.subsys,
&simple_children_subsys,
&group_children_subsys,
NULL,
};
static int __init configfs_example_init(void)
{
int ret;
int i;
struct configfs_subsystem *subsys;
for (i = 0; example_subsys[i]; i++) {
subsys = example_subsys[i];
config_group_init(&subsys->su_group);
init_MUTEX(&subsys->su_sem);
ret = configfs_register_subsystem(subsys);
if (ret) {
printk(KERN_ERR "Error %d while registering subsystem %s\n",
ret,
subsys->su_group.cg_item.ci_namebuf);
goto out_unregister;
}
}
return 0;
out_unregister:
for (; i >= 0; i--) {
configfs_unregister_subsystem(example_subsys[i]);
}
return ret;
}
static void __exit configfs_example_exit(void)
{
int i;
for (i = 0; example_subsys[i]; i++) {
configfs_unregister_subsystem(example_subsys[i]);
}
}
module_init(configfs_example_init);
module_exit(configfs_example_exit);
MODULE_LICENSE("GPL");

130
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@ -0,0 +1,130 @@
dlmfs
==================
A minimal DLM userspace interface implemented via a virtual file
system.
dlmfs is built with OCFS2 as it requires most of its infrastructure.
Project web page: http://oss.oracle.com/projects/ocfs2
Tools web page: http://oss.oracle.com/projects/ocfs2-tools
OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
All code copyright 2005 Oracle except when otherwise noted.
CREDITS
=======
Some code taken from ramfs which is Copyright (C) 2000 Linus Torvalds
and Transmeta Corp.
Mark Fasheh <mark.fasheh@oracle.com>
Caveats
=======
- Right now it only works with the OCFS2 DLM, though support for other
DLM implementations should not be a major issue.
Mount options
=============
None
Usage
=====
If you're just interested in OCFS2, then please see ocfs2.txt. The
rest of this document will be geared towards those who want to use
dlmfs for easy to setup and easy to use clustered locking in
userspace.
Setup
=====
dlmfs requires that the OCFS2 cluster infrastructure be in
place. Please download ocfs2-tools from the above url and configure a
cluster.
You'll want to start heartbeating on a volume which all the nodes in
your lockspace can access. The easiest way to do this is via
ocfs2_hb_ctl (distributed with ocfs2-tools). Right now it requires
that an OCFS2 file system be in place so that it can automatically
find it's heartbeat area, though it will eventually support heartbeat
against raw disks.
Please see the ocfs2_hb_ctl and mkfs.ocfs2 manual pages distributed
with ocfs2-tools.
Once you're heartbeating, DLM lock 'domains' can be easily created /
destroyed and locks within them accessed.
Locking
=======
Users may access dlmfs via standard file system calls, or they can use
'libo2dlm' (distributed with ocfs2-tools) which abstracts the file
system calls and presents a more traditional locking api.
dlmfs handles lock caching automatically for the user, so a lock
request for an already acquired lock will not generate another DLM
call. Userspace programs are assumed to handle their own local
locking.
Two levels of locks are supported - Shared Read, and Exlcusive.
Also supported is a Trylock operation.
For information on the libo2dlm interface, please see o2dlm.h,
distributed with ocfs2-tools.
Lock value blocks can be read and written to a resource via read(2)
and write(2) against the fd obtained via your open(2) call. The
maximum currently supported LVB length is 64 bytes (though that is an
OCFS2 DLM limitation). Through this mechanism, users of dlmfs can share
small amounts of data amongst their nodes.
mkdir(2) signals dlmfs to join a domain (which will have the same name
as the resulting directory)
rmdir(2) signals dlmfs to leave the domain
Locks for a given domain are represented by regular inodes inside the
domain directory. Locking against them is done via the open(2) system
call.
The open(2) call will not return until your lock has been granted or
an error has occurred, unless it has been instructed to do a trylock
operation. If the lock succeeds, you'll get an fd.
open(2) with O_CREAT to ensure the resource inode is created - dlmfs does
not automatically create inodes for existing lock resources.
Open Flag Lock Request Type
--------- -----------------
O_RDONLY Shared Read
O_RDWR Exclusive
Open Flag Resulting Locking Behavior
--------- --------------------------
O_NONBLOCK Trylock operation
You must provide exactly one of O_RDONLY or O_RDWR.
If O_NONBLOCK is also provided and the trylock operation was valid but
could not lock the resource then open(2) will return ETXTBUSY.
close(2) drops the lock associated with your fd.
Modes passed to mkdir(2) or open(2) are adhered to locally. Chown is
supported locally as well. This means you can use them to restrict
access to the resources via dlmfs on your local node only.
The resource LVB may be read from the fd in either Shared Read or
Exclusive modes via the read(2) system call. It can be written via
write(2) only when open in Exclusive mode.
Once written, an LVB will be visible to other nodes who obtain Read
Only or higher level locks on the resource.
See Also
========
http://opendlm.sourceforge.net/cvsmirror/opendlm/docs/dlmbook_final.pdf
For more information on the VMS distributed locking API.

22
Documentation/filesystems/ext3.txt
View File

@ -57,19 +57,19 @@ oldalloc This disables the Orlov block allocator and enables the
we'd like to get some feedback if it's the contrary for
you.
user_xattr (*) Enables POSIX Extended Attributes. It's enabled by
default, however you need to confifure its support
(CONFIG_EXT3_FS_XATTR). This is neccesary if you want
to use POSIX Acces Control Lists support. You can visit
http://acl.bestbits.at to know more about POSIX Extended
attributes.
user_xattr Enables Extended User Attributes. Additionally, you need
to have extended attribute support enabled in the kernel
configuration (CONFIG_EXT3_FS_XATTR). See the attr(5)
manual page and http://acl.bestbits.at to learn more
about extended attributes.
nouser_xattr Disables POSIX Extended Attributes.
nouser_xattr Disables Extended User Attributes.
acl (*) Enables POSIX Access Control Lists support. This is
enabled by default, however you need to configure
its support (CONFIG_EXT3_FS_POSIX_ACL). If you want
to know more about ACLs visit http://acl.bestbits.at
acl Enables POSIX Access Control Lists support. Additionally,
you need to have ACL support enabled in the kernel
configuration (CONFIG_EXT3_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.

55
Documentation/filesystems/ocfs2.txt Normal file
View File

@ -0,0 +1,55 @@
OCFS2 filesystem
==================
OCFS2 is a general purpose extent based shared disk cluster file
system with many similarities to ext3. It supports 64 bit inode
numbers, and has automatically extending metadata groups which may
also make it attractive for non-clustered use.
You'll want to install the ocfs2-tools package in order to at least
get "mount.ocfs2" and "ocfs2_hb_ctl".
Project web page: http://oss.oracle.com/projects/ocfs2
Tools web page: http://oss.oracle.com/projects/ocfs2-tools
OCFS2 mailing lists: http://oss.oracle.com/projects/ocfs2/mailman/
All code copyright 2005 Oracle except when otherwise noted.
CREDITS:
Lots of code taken from ext3 and other projects.
Authors in alphabetical order:
Joel Becker <joel.becker@oracle.com>
Zach Brown <zach.brown@oracle.com>
Mark Fasheh <mark.fasheh@oracle.com>
Kurt Hackel <kurt.hackel@oracle.com>
Sunil Mushran <sunil.mushran@oracle.com>
Manish Singh <manish.singh@oracle.com>
Caveats
=======
Features which OCFS2 does not support yet:
- sparse files
- extended attributes
- shared writeable mmap
- loopback is supported, but data written will not
be cluster coherent.
- quotas
- cluster aware flock
- Directory change notification (F_NOTIFY)
- Distributed Caching (F_SETLEASE/F_GETLEASE/break_lease)
- POSIX ACLs
- readpages / writepages (not user visible)
Mount options
=============
OCFS2 supports the following mount options:
(*) == default
barrier=1 This enables/disables barriers. barrier=0 disables it,
barrier=1 enables it.
errors=remount-ro(*) Remount the filesystem read-only on an error.
errors=panic Panic and halt the machine if an error occurs.
intr (*) Allow signals to interrupt cluster operations.
nointr Do not allow signals to interrupt cluster
operations.

5
Documentation/filesystems/vfs.txt
View File

@ -162,9 +162,8 @@ get_sb() method fills in is the "s_op" field. This is a pointer to
a "struct super_operations" which describes the next level of the
filesystem implementation.
Usually, a filesystem uses generic one of the generic get_sb()
implementations and provides a fill_super() method instead. The
generic methods are:
Usually, a filesystem uses one of the generic get_sb() implementations
and provides a fill_super() method instead. The generic methods are:
get_sb_bdev: mount a filesystem residing on a block device

19
Documentation/hwmon/w83627hf
View File

@ -54,13 +54,16 @@ If you really want i2c accesses for these Super I/O chips,
use the w83781d driver. However this is not the preferred method
now that this ISA driver has been developed.
Technically, the w83627thf does not support a VID reading. However, it's
possible or even likely that your mainboard maker has routed these signals
to a specific set of general purpose IO pins (the Asus P4C800-E is one such
board). The w83627thf driver now interprets these as VID. If the VID on
your board doesn't work, first see doc/vid in the lm_sensors package. If
that still doesn't help, email us at lm-sensors@lm-sensors.org.
The w83627_HF_ uses pins 110-106 as VID0-VID4. The w83627_THF_ uses the
same pins as GPIO[0:4]. Technically, the w83627_THF_ does not support a
VID reading. However the two chips have the identical 128 pin package. So,
it is possible or even likely for a w83627thf to have the VID signals routed
to these pins despite their not being labeled for that purpose. Therefore,
the w83627thf driver interprets these as VID. If the VID on your board
doesn't work, first see doc/vid in the lm_sensors package[1]. If that still
doesn't help, you may just ignore the bogus VID reading with no harm done.
For further information on this driver see the w83781d driver
documentation.
For further information on this driver see the w83781d driver documentation.
[1] http://www2.lm-sensors.nu/~lm78/cvs/browse.cgi/lm_sensors2/doc/vid

3
Documentation/i2c/busses/i2c-nforce2
View File

@ -5,7 +5,8 @@ Supported adapters:
* nForce2 Ultra 400 MCP 10de:0084
* nForce3 Pro150 MCP 10de:00D4
* nForce3 250Gb MCP 10de:00E4
* nForce4 MCP 10de:0052
* nForce4 MCP 10de:0052
* nForce4 MCP-04 10de:0034
Datasheet: not publically available, but seems to be similar to the
AMD-8111 SMBus 2.0 adapter.

1
Documentation/i2c/busses/i2c-parport
View File

@ -17,6 +17,7 @@ It currently supports the following devices:
* Velleman K8000 adapter
* ELV adapter
* Analog Devices evaluation boards (ADM1025, ADM1030, ADM1031, ADM1032)
* Barco LPT->DVI (K5800236) adapter
These devices use different pinout configurations, so you have to tell
the driver what you have, using the type module parameter. There is no

86
Documentation/i2c/porting-clients
View File

@ -1,10 +1,13 @@
Revision 5, 2005-07-29
Revision 6, 2005-11-20
Jean Delvare <khali@linux-fr.org>
Greg KH <greg@kroah.com>
This is a guide on how to convert I2C chip drivers from Linux 2.4 to
Linux 2.6. I have been using existing drivers (lm75, lm78) as examples.
Then I converted a driver myself (lm83) and updated this document.
Note that this guide is strongly oriented towards hardware monitoring
drivers. Many points are still valid for other type of drivers, but
others may be irrelevant.
There are two sets of points below. The first set concerns technical
changes. The second set concerns coding policy. Both are mandatory.
@ -22,16 +25,20 @@ Technical changes:
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/i2c-isa.h> /* for ISA drivers */
#include <linux/hwmon.h> /* for hardware monitoring drivers */
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h> /* if you need VRM support */
#include <linux/err.h> /* for class registration */
#include <asm/io.h> /* if you have I/O operations */
Please respect this inclusion order. Some extra headers may be
required for a given driver (e.g. "lm75.h").
* [Addresses] SENSORS_I2C_END becomes I2C_CLIENT_END, ISA addresses
are no more handled by the i2c core.
are no more handled by the i2c core. Address ranges are no more
supported either, define each individual address separately.
SENSORS_INSMOD_<n> becomes I2C_CLIENT_INSMOD_<n>.
* [Client data] Get rid of sysctl_id. Try using standard names for
@ -48,23 +55,23 @@ Technical changes:
int kind);
static void lm75_init_client(struct i2c_client *client);
static int lm75_detach_client(struct i2c_client *client);
static void lm75_update_client(struct i2c_client *client);
static struct lm75_data lm75_update_device(struct device *dev);
* [Sysctl] All sysctl stuff is of course gone (defines, ctl_table
and functions). Instead, you have to define show and set functions for
each sysfs file. Only define set for writable values. Take a look at an
existing 2.6 driver for details (lm78 for example). Don't forget
existing 2.6 driver for details (it87 for example). Don't forget
to define the attributes for each file (this is that step that
links callback functions). Use the file names specified in
Documentation/i2c/sysfs-interface for the individual files. Also
Documentation/hwmon/sysfs-interface for the individual files. Also
convert the units these files read and write to the specified ones.
If you need to add a new type of file, please discuss it on the
sensors mailing list <lm-sensors@lm-sensors.org> by providing a
patch to the Documentation/i2c/sysfs-interface file.
patch to the Documentation/hwmon/sysfs-interface file.
* [Attach] For I2C drivers, the attach function should make sure
that the adapter's class has I2C_CLASS_HWMON, using the
following construct:
that the adapter's class has I2C_CLASS_HWMON (or whatever class is
suitable for your driver), using the following construct:
if (!(adapter->class & I2C_CLASS_HWMON))
return 0;
ISA-only drivers of course don't need this.
@ -72,63 +79,72 @@ Technical changes:
* [Detect] As mentioned earlier, the flags parameter is gone.
The type_name and client_name strings are replaced by a single
name string, which will be filled with a lowercase, short string
(typically the driver name, e.g. "lm75").
name string, which will be filled with a lowercase, short string.
In i2c-only drivers, drop the i2c_is_isa_adapter check, it's
useless. Same for isa-only drivers, as the test would always be
true. Only hybrid drivers (which are quite rare) still need it.
The errorN labels are reduced to the number needed. If that number
is 2 (i2c-only drivers), it is advised that the labels are named
exit and exit_free. For i2c+isa drivers, labels should be named
ERROR0, ERROR1 and ERROR2. Don't forget to properly set err before
The labels used for error paths are reduced to the number needed.
It is advised that the labels are given descriptive names such as
exit and exit_free. Don't forget to properly set err before
jumping to error labels. By the way, labels should be left-aligned.
Use kzalloc instead of kmalloc.
Use i2c_set_clientdata to set the client data (as opposed to
a direct access to client->data).
Use strlcpy instead of strcpy to copy the client name.
Use strlcpy instead of strcpy or snprintf to copy the client name.
Replace the sysctl directory registration by calls to
device_create_file. Move the driver initialization before any
sysfs file creation.
Register the client with the hwmon class (using hwmon_device_register)
if applicable.
Drop client->id.
Drop any 24RF08 corruption prevention you find, as this is now done
at the i2c-core level, and doing it twice voids it.
Don't add I2C_CLIENT_ALLOW_USE to client->flags, it's the default now.
* [Init] Limits must not be set by the driver (can be done later in
user-space). Chip should not be reset default (although a module
parameter may be used to force is), and initialization should be
parameter may be used to force it), and initialization should be
limited to the strictly necessary steps.
* [Detach] Get rid of data, remove the call to
i2c_deregister_entry. Do not log an error message if
i2c_detach_client fails, as i2c-core will now do it for you.
* [Detach] Remove the call to i2c_deregister_entry. Do not log an
error message if i2c_detach_client fails, as i2c-core will now do
it for you.
Unregister from the hwmon class if applicable.
* [Update] Don't access client->data directly, use
i2c_get_clientdata(client) instead.
* [Update] The function prototype changed, it is now
passed a device structure, which you have to convert to a client
using to_i2c_client(dev). The update function should return a
pointer to the client data.
Don't access client->data directly, use i2c_get_clientdata(client)
instead.
Use time_after() instead of direct jiffies comparison.
* [Interface] Init function should not print anything. Make sure
there is a MODULE_LICENSE() line, at the bottom of the file
(after MODULE_AUTHOR() and MODULE_DESCRIPTION(), in this order).
* [Interface] Make sure there is a MODULE_LICENSE() line, at the bottom
of the file (after MODULE_AUTHOR() and MODULE_DESCRIPTION(), in this
order).
* [Driver] The flags field of the i2c_driver structure is gone.
I2C_DF_NOTIFY is now the default behavior.
The i2c_driver structure has a driver member, which is itself a
structure, those name member should be initialized to a driver name
string. i2c_driver itself has no name member anymore.
Coding policy:
* [Copyright] Use (C), not (c), for copyright.
* [Debug/log] Get rid of #ifdef DEBUG/#endif constructs whenever you
can. Calls to printk/pr_debug for debugging purposes are replaced
by calls to dev_dbg. Here is an example on how to call it (taken
from lm75_detect):
can. Calls to printk for debugging purposes are replaced by calls to
dev_dbg where possible, else to pr_debug. Here is an example of how
to call it (taken from lm75_detect):
dev_dbg(&client->dev, "Starting lm75 update\n");
Replace other printk calls with the dev_info, dev_err or dev_warn
function, as appropriate.
* [Constants] Constants defines (registers, conversions, initial
values) should be aligned. This greatly improves readability.
Same goes for variables declarations. Alignments are achieved by the
means of tabs, not spaces. Remember that tabs are set to 8 in the
Linux kernel code.
* [Structure definition] The name field should be standardized. All
lowercase and as simple as the driver name itself (e.g. "lm75").
* [Constants] Constants defines (registers, conversions) should be
aligned. This greatly improves readability.
Alignments are achieved by the means of tabs, not spaces. Remember
that tabs are set to 8 in the Linux kernel code.
* [Layout] Avoid extra empty lines between comments and what they
comment. Respect the coding style (see Documentation/CodingStyle),

20
Documentation/i2c/writing-clients
View File

@ -25,9 +25,9 @@ routines, a client structure specific information like the actual I2C
address.
static struct i2c_driver foo_driver = {
.owner = THIS_MODULE,
.name = "Foo version 2.3 driver",
.flags = I2C_DF_NOTIFY,
.driver = {
.name = "foo",
},
.attach_adapter = &foo_attach_adapter,
.detach_client = &foo_detach_client,
.command = &foo_command /* may be NULL */
@ -36,10 +36,6 @@ static struct i2c_driver foo_driver = {
The name field must match the driver name, including the case. It must not
contain spaces, and may be up to 31 characters long.
Don't worry about the flags field; just put I2C_DF_NOTIFY into it. This
means that your driver will be notified when new adapters are found.
This is almost always what you want.
All other fields are for call-back functions which will be explained
below.
@ -496,17 +492,13 @@ Note that some functions are marked by `__init', and some data structures
by `__init_data'. Hose functions and structures can be removed after
kernel booting (or module loading) is completed.
Command function
================
A generic ioctl-like function call back is supported. You will seldom
need this. You may even set it to NULL.
/* No commands defined */
int foo_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
return 0;
}
need this, and its use is deprecated anyway, so newer design should not
use it. Set it to NULL.
Sending and receiving

64
Documentation/kbuild/modules.txt
View File

@ -18,6 +18,7 @@ In this document you will find information about:
=== 5. Include files
--- 5.1 How to include files from the kernel include dir
--- 5.2 External modules using an include/ dir
--- 5.3 External modules using several directories
=== 6. Module installation
--- 6.1 INSTALL_MOD_PATH
--- 6.2 INSTALL_MOD_DIR
@ -38,7 +39,7 @@ included in the kernel tree.
What is covered within this file is mainly information to authors
of modules. The author of an external modules should supply
a makefile that hides most of the complexity so one only has to type
'make' to buld the module. A complete example will be present in
'make' to build the module. A complete example will be present in
chapter ¤. Creating a kbuild file for an external module".
@ -69,7 +70,7 @@ when building an external module.
--- 2.2 Available targets
$KDIR refers to path to kernel source top-level directory
$KDIR refers to the path to the kernel source top-level directory
make -C $KDIR M=`pwd`
Will build the module(s) located in current directory.
@ -87,11 +88,11 @@ when building an external module.
make -C $KDIR M=$PWD modules_install
Install the external module(s).
Installation default is in /lib/modules/<kernel-version>/extra,
but may be prefixed with INSTALL_MOD_PATH - see separate chater.
but may be prefixed with INSTALL_MOD_PATH - see separate chapter.
make -C $KDIR M=$PWD clean
Remove all generated files for the module - the kernel
source directory is not moddified.
source directory is not modified.
make -C $KDIR M=`pwd` help
help will list the available target when building external
@ -99,7 +100,7 @@ when building an external module.
--- 2.3 Available options:
$KDIR refer to path to kernel src
$KDIR refers to the path to the kernel source top-level directory
make -C $KDIR
Used to specify where to find the kernel source.
@ -206,11 +207,11 @@ following files:
KERNELDIR := /lib/modules/`uname -r`/build
all::
$(MAKE) -C $KERNELDIR M=`pwd` $@
$(MAKE) -C $(KERNELDIR) M=`pwd` $@
# Module specific targets
genbin:
echo "X" > 8123_bini.o_shipped
echo "X" > 8123_bin.o_shipped
endif
@ -341,13 +342,52 @@ directory and therefore needs to deal with this in their kbuild file.
EXTRA_CFLAGS := -Iinclude
8123-y := 8123_if.o 8123_pci.o 8123_bin.o
Note that in the assingment there is no space between -I and the path.
This is a kbuild limitation and no space must be present.
Note that in the assignment there is no space between -I and the path.
This is a kbuild limitation: there must be no space present.
--- 5.3 External modules using several directories
If an external module does not follow the usual kernel style but
decide to spread files over several directories then kbuild can
support this too.
Consider the following example:
|
+- src/complex_main.c
| +- hal/hardwareif.c
| +- hal/include/hardwareif.h
+- include/complex.h
To build a single module named complex.ko we then need the following
kbuild file:
Kbuild:
obj-m := complex.o
complex-y := src/complex_main.o
complex-y += src/hal/hardwareif.o
EXTRA_CFLAGS := -I$(src)/include
EXTRA_CFLAGS += -I$(src)src/hal/include
kbuild knows how to handle .o files located in another directory -
although this is NOT reccommended practice. The syntax is to specify
the directory relative to the directory where the Kbuild file is
located.
To find the .h files we have to explicitly tell kbuild where to look
for the .h files. When kbuild executes current directory is always
the root of the kernel tree (argument to -C) and therefore we have to
tell kbuild how to find the .h files using absolute paths.
$(src) will specify the absolute path to the directory where the
Kbuild file are located when being build as an external module.
Therefore -I$(src)/ is used to point out the directory of the Kbuild
file and any additional path are just appended.
=== 6. Module installation
Modules which are included in the kernel is installed in the directory:
Modules which are included in the kernel are installed in the directory:
/lib/modules/$(KERNELRELEASE)/kernel
@ -365,7 +405,7 @@ External modules are installed in the directory:
=> Install dir: /frodo/lib/modules/$(KERNELRELEASE)/kernel
INSTALL_MOD_PATH may be set as an ordinary shell variable or as in the
example above be specified on the commandline when calling make.
example above be specified on the command line when calling make.
INSTALL_MOD_PATH has effect both when installing modules included in
the kernel as well as when installing external modules.
@ -384,7 +424,7 @@ External modules are installed in the directory:
=== 7. Module versioning
Module versioning are enabled by the CONFIG_MODVERSIONS tag.
Module versioning is enabled by the CONFIG_MODVERSIONS tag.
Module versioning is used as a simple ABI consistency check. The Module
versioning creates a CRC value of the full prototype for an exported symbol and

16
Documentation/kernel-parameters.txt
View File

@ -633,6 +633,14 @@ running once the system is up.
inport.irq= [HW] Inport (ATI XL and Microsoft) busmouse driver
Format: <irq>
combined_mode= [HW] control which driver uses IDE ports in combined
mode: legacy IDE driver, libata, or both
(in the libata case, libata.atapi_enabled=1 may be
useful as well). Note that using the ide or libata
options may affect your device naming (e.g. by
changing hdc to sdb).
Format: combined (default), ide, or libata
inttest= [IA64]
io7= [HW] IO7 for Marvel based alpha systems
@ -902,6 +910,14 @@ running once the system is up.
nfsroot= [NFS] nfs root filesystem for disk-less boxes.
See Documentation/nfsroot.txt.
nfs.callback_tcpport=
[NFS] set the TCP port on which the NFSv4 callback
channel should listen.
nfs.idmap_cache_timeout=
[NFS] set the maximum lifetime for idmapper cache
entries.
nmi_watchdog= [KNL,BUGS=IA-32] Debugging features for SMP kernels
no387 [BUGS=IA-32] Tells the kernel to use the 387 maths

18
Documentation/keys.txt
View File

@ -860,24 +860,6 @@ The structure has a number of fields, some of which are mandatory:
It is safe to sleep in this method.
(*) int (*duplicate)(struct key *key, const struct key *source);
If this type of key can be duplicated, then this method should be
provided. It is called to copy the payload attached to the source into the
new key. The data length on the new key will have been updated and the
quota adjusted already.
This method will be called with the source key's semaphore read-locked to
prevent its payload from being changed, thus RCU constraints need not be
applied to the source key.
This method does not have to lock the destination key in order to attach a
payload. The fact that KEY_FLAG_INSTANTIATED is not set in key->flags
prevents anything else from gaining access to the key.
It is safe to sleep in this method.
(*) int (*update)(struct key *key, const void *data, size_t datalen);
If this type of key can be updated, then this method should be provided.

120
Documentation/md.txt
View File

@ -51,6 +51,30 @@ superblock can be autodetected and run at boot time.
The kernel parameter "raid=partitionable" (or "raid=part") means
that all auto-detected arrays are assembled as partitionable.
Boot time assembly of degraded/dirty arrays
-------------------------------------------
If a raid5 or raid6 array is both dirty and degraded, it could have
undetectable data corruption. This is because the fact that it is
'dirty' means that the parity cannot be trusted, and the fact that it
is degraded means that some datablocks are missing and cannot reliably
be reconstructed (due to no parity).
For this reason, md will normally refuse to start such an array. This
requires the sysadmin to take action to explicitly start the array
desipite possible corruption. This is normally done with
mdadm --assemble --force ....
This option is not really available if the array has the root
filesystem on it. In order to support this booting from such an
array, md supports a module parameter "start_dirty_degraded" which,
when set to 1, bypassed the checks and will allows dirty degraded
arrays to be started.
So, to boot with a root filesystem of a dirty degraded raid[56], use
md-mod.start_dirty_degraded=1
Superblock formats
------------------
@ -141,6 +165,70 @@ All md devices contain:
in a fully functional array. If this is not yet known, the file
will be empty. If an array is being resized (not currently
possible) this will contain the larger of the old and new sizes.
Some raid level (RAID1) allow this value to be set while the
array is active. This will reconfigure the array. Otherwise
it can only be set while assembling an array.
chunk_size
This is the size if bytes for 'chunks' and is only relevant to
raid levels that involve striping (1,4,5,6,10). The address space
of the array is conceptually divided into chunks and consecutive
chunks are striped onto neighbouring devices.
The size should be atleast PAGE_SIZE (4k) and should be a power
of 2. This can only be set while assembling an array
component_size
For arrays with data redundancy (i.e. not raid0, linear, faulty,
multipath), all components must be the same size - or at least
there must a size that they all provide space for. This is a key
part or the geometry of the array. It is measured in sectors
and can be read from here. Writing to this value may resize
the array if the personality supports it (raid1, raid5, raid6),
and if the component drives are large enough.
metadata_version
This indicates the format that is being used to record metadata
about the array. It can be 0.90 (traditional format), 1.0, 1.1,
1.2 (newer format in varying locations) or "none" indicating that
the kernel isn't managing metadata at all.
level
The raid 'level' for this array. The name will often (but not
always) be the same as the name of the module that implements the
level. To be auto-loaded the module must have an alias
md-$LEVEL e.g. md-raid5
This can be written only while the array is being assembled, not
after it is started.
new_dev
This file can be written but not read. The value written should
be a block device number as major:minor. e.g. 8:0
This will cause that device to be attached to the array, if it is
available. It will then appear at md/dev-XXX (depending on the
name of the device) and further configuration is then possible.
sync_speed_min
sync_speed_max
This are similar to /proc/sys/dev/raid/speed_limit_{min,max}
however they only apply to the particular array.
If no value has been written to these, of if the word 'system'
is written, then the system-wide value is used. If a value,
in kibibytes-per-second is written, then it is used.
When the files are read, they show the currently active value
followed by "(local)" or "(system)" depending on whether it is
a locally set or system-wide value.
sync_completed
This shows the number of sectors that have been completed of
whatever the current sync_action is, followed by the number of
sectors in total that could need to be processed. The two
numbers are separated by a '/' thus effectively showing one
value, a fraction of the process that is complete.
sync_speed
This shows the current actual speed, in K/sec, of the current
sync_action. It is averaged over the last 30 seconds.
As component devices are added to an md array, they appear in the 'md'
directory as new directories named
@ -167,6 +255,38 @@ Each directory contains:
of being recoverred to
This list make grow in future.
errors
An approximate count of read errors that have been detected on
this device but have not caused the device to be evicted from
the array (either because they were corrected or because they
happened while the array was read-only). When using version-1
metadata, this value persists across restarts of the array.
This value can be written while assembling an array thus
providing an ongoing count for arrays with metadata managed by
userspace.
slot
This gives the role that the device has in the array. It will
either be 'none' if the device is not active in the array
(i.e. is a spare or has failed) or an integer less than the
'raid_disks' number for the array indicating which possition
it currently fills. This can only be set while assembling an
array. A device for which this is set is assumed to be working.
offset
This gives the location in the device (in sectors from the
start) where data from the array will be stored. Any part of
the device before this offset us not touched, unless it is
used for storing metadata (Formats 1.1 and 1.2).
size
The amount of the device, after the offset, that can be used
for storage of data. This will normally be the same as the
component_size. This can be written while assembling an
array. If a value less than the current component_size is
written, component_size will be reduced to this value.
An active md device will also contain and entry for each active device
in the array. These are named

72
Documentation/networking/gianfar.txt Normal file
View File

@ -0,0 +1,72 @@
The Gianfar Ethernet Driver
Sysfs File description
Author: Andy Fleming <afleming@freescale.com>
Updated: 2005-07-28
SYSFS
Several of the features of the gianfar driver are controlled
through sysfs files. These are:
bd_stash:
To stash RX Buffer Descriptors in the L2, echo 'on' or '1' to
bd_stash, echo 'off' or '0' to disable
rx_stash_len:
To stash the first n bytes of the packet in L2, echo the number
of bytes to buf_stash_len. echo 0 to disable.
WARNING: You could really screw these up if you set them too low or high!
fifo_threshold:
To change the number of bytes the controller needs in the
fifo before it starts transmission, echo the number of bytes to
fifo_thresh. Range should be 0-511.
fifo_starve:
When the FIFO has less than this many bytes during a transmit, it
enters starve mode, and increases the priority of TX memory
transactions. To change, echo the number of bytes to
fifo_starve. Range should be 0-511.
fifo_starve_off:
Once in starve mode, the FIFO remains there until it has this
many bytes. To change, echo the number of bytes to
fifo_starve_off. Range should be 0-511.
CHECKSUM OFFLOADING
The eTSEC controller (first included in parts from late 2005 like
the 8548) has the ability to perform TCP, UDP, and IP checksums
in hardware. The Linux kernel only offloads the TCP and UDP
checksums (and always performs the pseudo header checksums), so
the driver only supports checksumming for TCP/IP and UDP/IP
packets. Use ethtool to enable or disable this feature for RX
and TX.
VLAN
In order to use VLAN, please consult Linux documentation on
configuring VLANs. The gianfar driver supports hardware insertion and
extraction of VLAN headers, but not filtering. Filtering will be
done by the kernel.
MULTICASTING
The gianfar driver supports using the group hash table on the
TSEC (and the extended hash table on the eTSEC) for multicast
filtering. On the eTSEC, the exact-match MAC registers are used
before the hash tables. See Linux documentation on how to join
multicast groups.
PADDING
The gianfar driver supports padding received frames with 2 bytes
to align the IP header to a 16-byte boundary, when supported by
hardware.
ETHTOOL
The gianfar driver supports the use of ethtool for many
configuration options. You must run ethtool only on currently
open interfaces. See ethtool documentation for details.

23
Documentation/networking/ip-sysctl.txt
View File

@ -46,6 +46,29 @@ ipfrag_secret_interval - INTEGER
for the hash secret) for IP fragments.
Default: 600
ipfrag_max_dist - INTEGER
ipfrag_max_dist is a non-negative integer value which defines the
maximum "disorder" which is allowed among fragments which share a
common IP source address. Note that reordering of packets is
not unusual, but if a large number of fragments arrive from a source
IP address while a particular fragment queue remains incomplete, it
probably indicates that one or more fragments belonging to that queue
have been lost. When ipfrag_max_dist is positive, an additional check
is done on fragments before they are added to a reassembly queue - if
ipfrag_max_dist (or more) fragments have arrived from a particular IP
address between additions to any IP fragment queue using that source
address, it's presumed that one or more fragments in the queue are
lost. The existing fragment queue will be dropped, and a new one
started. An ipfrag_max_dist value of zero disables this check.
Using a very small value, e.g. 1 or 2, for ipfrag_max_dist can
result in unnecessarily dropping fragment queues when normal
reordering of packets occurs, which could lead to poor application
performance. Using a very large value, e.g. 50000, increases the
likelihood of incorrectly reassembling IP fragments that originate
from different IP datagrams, which could result in data corruption.
Default: 64
INET peer storage:
inet_peer_threshold - INTEGER

11
Documentation/pcmcia/driver-changes.txt
View File

@ -1,5 +1,16 @@
This file details changes in 2.6 which affect PCMCIA card driver authors:
* Unify detach and REMOVAL event code, as well as attach and INSERTION
code (as of 2.6.16)
void (*remove) (struct pcmcia_device *dev);
int (*probe) (struct pcmcia_device *dev);
* Move suspend, resume and reset out of event handler (as of 2.6.16)
int (*suspend) (struct pcmcia_device *dev);
int (*resume) (struct pcmcia_device *dev);
should be initialized in struct pcmcia_driver, and handle
(SUSPEND == RESET_PHYSICAL) and (RESUME == CARD_RESET) events
* event handler initialization in struct pcmcia_driver (as of 2.6.13)
The event handler is notified of all events, and must be initialized
as the event() callback in the driver's struct pcmcia_driver.

11
Documentation/power/interface.txt
View File

@ -41,3 +41,14 @@ to. Writing to this file will accept one of
It will only change to 'firmware' or 'platform' if the system supports
it.
/sys/power/image_size controls the size of the image created by
the suspend-to-disk mechanism. It can be written a string
representing a non-negative integer that will be used as an upper
limit of the image size, in megabytes. The suspend-to-disk mechanism will
do its best to ensure the image size will not exceed that number. However,
if this turns out to be impossible, it will try to suspend anyway using the
smallest image possible. In particular, if "0" is written to this file, the
suspend image will be as small as possible.
Reading from this file will display the current image size limit, which
is set to 500 MB by default.

5
Documentation/power/swsusp.txt
View File

@ -27,6 +27,11 @@ echo shutdown > /sys/power/disk; echo disk > /sys/power/state
echo platform > /sys/power/disk; echo disk > /sys/power/state
If you want to limit the suspend image size to N megabytes, do
echo N > /sys/power/image_size
before suspend (it is limited to 500 MB by default).
Encrypted suspend image:
------------------------

31
Documentation/powerpc/eeh-pci-error-recovery.txt
View File

@ -115,7 +115,7 @@ Current PPC64 Linux EEH Implementation
At this time, a generic EEH recovery mechanism has been implemented,
so that individual device drivers do not need to be modified to support
EEH recovery. This generic mechanism piggy-backs on the PCI hotplug
infrastructure, and percolates events up through the hotplug/udev
infrastructure, and percolates events up through the userspace/udev
infrastructure. Followiing is a detailed description of how this is
accomplished.
@ -172,7 +172,7 @@ A handler for the EEH notifier_block events is implemented in
drivers/pci/hotplug/pSeries_pci.c, called handle_eeh_events().
It saves the device BAR's and then calls rpaphp_unconfig_pci_adapter().
This last call causes the device driver for the card to be stopped,
which causes hotplug events to go out to user space. This triggers
which causes uevents to go out to user space. This triggers
user-space scripts that might issue commands such as "ifdown eth0"
for ethernet cards, and so on. This handler then sleeps for 5 seconds,
hoping to give the user-space scripts enough time to complete.
@ -258,29 +258,30 @@ rpa_php_unconfig_pci_adapter() { // in rpaphp_pci.c
calls
pci_destroy_dev (struct pci_dev *) {
calls
device_unregister (&dev->dev) { // in /drivers/base/core.c
device_unregister (&dev->dev) { // in /drivers/base/core.c
calls
device_del(struct device * dev) { // in /drivers/base/core.c
device_del(struct device * dev) { // in /drivers/base/core.c
calls
kobject_del() { //in /libs/kobject.c
kobject_del() { //in /libs/kobject.c
calls
kobject_hotplug() { // in /libs/kobject.c
kobject_uevent() { // in /libs/kobject.c
calls
kset_hotplug() { // in /lib/kobject.c
kset_uevent() { // in /lib/kobject.c
calls
kset->hotplug_ops->hotplug() which is really just
kset->uevent_ops->uevent() // which is really just
a call to
dev_hotplug() { // in /drivers/base/core.c
dev_uevent() { // in /drivers/base/core.c
calls
dev->bus->hotplug() which is really just a call to
pci_hotplug () { // in drivers/pci/hotplug.c
dev->bus->uevent() which is really just a call to
pci_uevent () { // in drivers/pci/hotplug.c
which prints device name, etc....
}
}
then kset_hotplug() calls
call_usermodehelper () with
argv[0]=hotplug_path[] which is "/sbin/hotplug"
--> event to userspace,
then kobject_uevent() sends a netlink uevent to userspace
--> userspace uevent
(during early boot, nobody listens to netlink events and
kobject_uevent() executes uevent_helper[], which runs the
event process /sbin/hotplug)
}
}
kobject_del() then calls sysfs_remove_dir(), which would

35
Documentation/scsi/ChangeLog.megaraid
View File

@ -1,3 +1,38 @@
Release Date : Fri Nov 11 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
Current Version : 2.20.4.7 (scsi module), 2.20.2.6 (cmm module)
Older Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
1. Sorted out PCI IDs to remove megaraid support overlaps.
Based on the patch from Daniel, sorted out PCI IDs along with
charactor node name change from 'megadev' to 'megadev_legacy' to avoid
conflict.
---
Hopefully we'll be getting the build restriction zapped much sooner,
but we should also be thinking about totally removing the hardware
support overlap in the megaraid drivers.
This patch pencils in a date of Feb 06 for this, and performs some
printk abuse in hope that existing legacy users might pick up on what's
going on.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
---
2. Fixed a issue: megaraid always fails to reset handler.
---
I found that the megaraid driver always fails to reset the
adapter with the following message:
megaraid: resetting the host...
megaraid mbox: reset sequence completed successfully
megaraid: fast sync command timed out
megaraid: reservation reset failed
when the "Cluster mode" of the adapter BIOS is enabled.
So, whenever the reset occurs, the adapter goes to
offline and just become unavailable.
Jun'ichi Nomura [mailto:jnomura@mtc.biglobe.ne.jp]
---
Release Date : Mon Mar 07 12:27:22 EST 2005 - Seokmann Ju <sju@lsil.com>
Current Version : 2.20.4.6 (scsi module), 2.20.2.6 (cmm module)
Older Version : 2.20.4.5 (scsi module), 2.20.2.5 (cmm module)

39
Documentation/scsi/scsi_mid_low_api.txt
View File

@ -150,7 +150,8 @@ scsi devices of which only the first 2 respond:
LLD mid level LLD
===-------------------=========--------------------===------
scsi_host_alloc() -->
scsi_add_host() --------+
scsi_add_host() ---->
scsi_scan_host() -------+
|
slave_alloc()
slave_configure() --> scsi_adjust_queue_depth()
@ -196,7 +197,7 @@ of the issues involved. See the section on reference counting below.
The hotplug concept may be extended to SCSI devices. Currently, when an
HBA is added, the scsi_add_host() function causes a scan for SCSI devices
HBA is added, the scsi_scan_host() function causes a scan for SCSI devices
attached to the HBA's SCSI transport. On newer SCSI transports the HBA
may become aware of a new SCSI device _after_ the scan has completed.
An LLD can use this sequence to make the mid level aware of a SCSI device:
@ -372,7 +373,7 @@ names all start with "scsi_".
Summary:
scsi_activate_tcq - turn on tag command queueing
scsi_add_device - creates new scsi device (lu) instance
scsi_add_host - perform sysfs registration and SCSI bus scan.
scsi_add_host - perform sysfs registration and set up transport class
scsi_adjust_queue_depth - change the queue depth on a SCSI device
scsi_assign_lock - replace default host_lock with given lock
scsi_bios_ptable - return copy of block device's partition table
@ -386,6 +387,7 @@ Summary:
scsi_remove_device - detach and remove a SCSI device
scsi_remove_host - detach and remove all SCSI devices owned by host
scsi_report_bus_reset - report scsi _bus_ reset observed
scsi_scan_host - scan SCSI bus
scsi_track_queue_full - track successive QUEUE_FULL events
scsi_unblock_requests - allow further commands to be queued to given host
scsi_unregister - [calls scsi_host_put()]
@ -425,10 +427,10 @@ void scsi_activate_tcq(struct scsi_device *sdev, int depth)
* Might block: yes
*
* Notes: This call is usually performed internally during a scsi
* bus scan when an HBA is added (i.e. scsi_add_host()). So it
* bus scan when an HBA is added (i.e. scsi_scan_host()). So it
* should only be called if the HBA becomes aware of a new scsi
* device (lu) after scsi_add_host() has completed. If successful
* this call we lead to slave_alloc() and slave_configure() callbacks
* device (lu) after scsi_scan_host() has completed. If successful
* this call can lead to slave_alloc() and slave_configure() callbacks
* into the LLD.
*
* Defined in: drivers/scsi/scsi_scan.c
@ -439,7 +441,7 @@ struct scsi_device * scsi_add_device(struct Scsi_Host *shost,
/**
* scsi_add_host - perform sysfs registration and SCSI bus scan.
* scsi_add_host - perform sysfs registration and set up transport class
* @shost: pointer to scsi host instance
* @dev: pointer to struct device of type scsi class
*
@ -448,7 +450,11 @@ struct scsi_device * scsi_add_device(struct Scsi_Host *shost,
* Might block: no
*
* Notes: Only required in "hotplug initialization model" after a
* successful call to scsi_host_alloc().
* successful call to scsi_host_alloc(). This function does not
* scan the bus; this can be done by calling scsi_scan_host() or
* in some other transport-specific way. The LLD must set up
* the transport template before calling this function and may only
* access the transport class data after this function has been called.
*
* Defined in: drivers/scsi/hosts.c
**/
@ -559,7 +565,7 @@ void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
* area for the LLD's exclusive use.
* Both associated refcounting objects have their refcount set to 1.
* Full registration (in sysfs) and a bus scan are performed later when
* scsi_add_host() is called.
* scsi_add_host() and scsi_scan_host() are called.
*
* Defined in: drivers/scsi/hosts.c .
**/
@ -698,6 +704,19 @@ int scsi_remove_host(struct Scsi_Host *shost)
void scsi_report_bus_reset(struct Scsi_Host * shost, int channel)
/**
* scsi_scan_host - scan SCSI bus
* @shost: a pointer to a scsi host instance
*
* Might block: yes
*
* Notes: Should be called after scsi_add_host()
*
* Defined in: drivers/scsi/scsi_scan.c
**/
void scsi_scan_host(struct Scsi_Host *shost)
/**
* scsi_track_queue_full - track successive QUEUE_FULL events on given
* device to determine if and when there is a need
@ -1433,7 +1452,7 @@ The following people have contributed to this document:
Christoph Hellwig <hch at infradead dot org>
Doug Ledford <dledford at redhat dot com>
Andries Brouwer <Andries dot Brouwer at cwi dot nl>
Randy Dunlap <rddunlap at osdl dot org>
Randy Dunlap <rdunlap at xenotime dot net>
Alan Stern <stern at rowland dot harvard dot edu>

194
Documentation/sound/alsa/ALSA-Configuration.txt
View File

@ -105,7 +105,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Each of top level sound card module takes the following options.
index - index (slot #) of sound card
- Values: 0 through 7 or negative
- Values: 0 through 31 or negative
- If nonnegative, assign that index number
- if negative, interpret as a bitmask of permissible
indices; the first free permitted index is assigned
@ -134,7 +134,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma2 - second DMA # for AD1816A chip (PnP setup)
clockfreq - Clock frequency for AD1816A chip (default = 0, 33000Hz)
Module supports up to 8 cards, autoprobe and PnP.
This module supports multiple cards, autoprobe and PnP.
Module snd-ad1848
-----------------
@ -145,9 +145,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
irq - IRQ # for AD1848 chip
dma1 - DMA # for AD1848 chip (0,1,3)
Module supports up to 8 cards. This module does not support autoprobe
This module supports multiple cards. It does not support autoprobe
thus main port must be specified!!! Other ports are optional.
The power-management is supported.
Module snd-ad1889
-----------------
@ -156,7 +158,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ac97_quirk - AC'97 workaround for strange hardware
See the description of intel8x0 module for details.
This module supports up to 8 cards.
This module supports multiple cards.
Module snd-ali5451
------------------
@ -184,7 +186,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
mpu_irq - IRQ # for MPU-401 (PnP setup)
fm_port - port # for OPL3 FM (PnP setup)
Module supports up to 8 cards, autoprobe and PnP.
This module supports multiple cards, autoprobe and PnP.
The power-management is supported.
Module snd-als4000
------------------
@ -194,7 +198,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
joystick_port - port # for legacy joystick support.
0 = disabled (default), 1 = auto-detect
Module supports up to 8 cards, autoprobe and PnP.
This module supports multiple cards, autoprobe and PnP.
The power-management is supported.
Module snd-atiixp
-----------------
@ -213,6 +219,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
implementation depends on the motherboard, and you'll need to
choose the correct one via spdif_aclink module option.
The power-management is supported.
Module snd-atiixp-modem
-----------------------
@ -223,6 +231,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.
The power-management is supported.
Module snd-au8810, snd-au8820, snd-au8830
-----------------------------------------
@ -263,8 +273,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma1 - 1st DMA # for AZT2320 (WSS) chip (PnP setup)
dma2 - 2nd DMA # for AZT2320 (WSS) chip (PnP setup)
Module supports up to 8 cards, PnP and autoprobe.
This module supports multiple cards, PnP and autoprobe.
The power-management is supported.
Module snd-azt3328
------------------
@ -272,7 +284,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
joystick - Enable joystick (default off)
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-bt87x
----------------
@ -282,7 +294,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
digital_rate - Override the default digital rate (Hz)
load_all - Load the driver even if the card model isn't known
Module supports up to 8 cards.
This module supports multiple cards.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.
@ -292,7 +304,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module for Creative Audigy LS and SB Live 24bit
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-cmi8330
@ -308,7 +320,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
sbdma8 - 8bit DMA # for CMI8330 chip (SB16)
sbdma16 - 16bit DMA # for CMI8330 chip (SB16)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
The power-management is supported.
Module snd-cmipci
-----------------
@ -321,8 +335,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
(default = 1)
joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
Module supports autoprobe and multiple chips (max 8).
This module supports autoprobe and multiple cards.
The power-management is supported.
Module snd-cs4231
-----------------
@ -335,7 +351,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma1 - first DMA # for CS4231 chip
dma2 - second DMA # for CS4231 chip
Module supports up to 8 cards. This module does not support autoprobe
This module supports multiple cards. This module does not support autoprobe
thus main port must be specified!!! Other ports are optional.
The power-management is supported.
@ -355,7 +371,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma2 - second DMA # for Yamaha CS4232 chip (0,1,3), -1 = disable
isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Module supports up to 8 cards. This module does not support autoprobe
This module supports multiple cards. This module does not support autoprobe
thus main port must be specified!!! Other ports are optional.
The power-management is supported.
@ -376,7 +392,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma2 - second DMA # for CS4236 chip (0,1,3), -1 = disable
isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Module supports up to 8 cards. This module does not support autoprobe
This module supports multiple cards. This module does not support autoprobe
(if ISA PnP is not used) thus main port and control port must be
specified!!! Other ports are optional.
@ -389,7 +405,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dual_codec - Secondary codec ID (0 = disable, default)
Module supports up to 8 cards.
This module supports multiple cards.
The power-management is supported.
@ -403,13 +419,20 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
thinkpad - Force to enable Thinkpad's CLKRUN control.
mmap_valid - Support OSS mmap mode (default = 0).
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Usually external amp and CLKRUN controls are detected automatically
from PCI sub vendor/device ids. If they don't work, give the options
above explicitly.
The power-management is supported.
Module snd-cs5535audio
----------------------
Module for multifunction CS5535 companion PCI device
This module supports multiple cards.
Module snd-dt019x
-----------------
@ -423,9 +446,11 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
mpu_irq - IRQ # for MPU-401 (PnP setup)
dma8 - DMA # (PnP setup)
Module supports up to 8 cards. This module is enabled only with
This module supports multiple cards. This module is enabled only with
ISA PnP support.
The power-management is supported.
Module snd-dummy
----------------
@ -433,6 +458,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
or input, but you may use this module for any application which
requires a sound card (like RealPlayer).
The power-management is supported.
Module snd-emu10k1
------------------
@ -450,7 +477,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
given in MB unit. Default value is 128.
enable_ir - enable IR
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Input & Output configurations [extin/extout]
* Creative Card wo/Digital out [0x0003/0x1f03]
@ -466,12 +493,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
* Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]
* Creative Card all ins and outs [0x3fff/0x7fff]
The power-management is supported.
Module snd-emu10k1x
-------------------
Module for Creative Emu10k1X (SB Live Dell OEM version)
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-ens1370
------------------
@ -482,7 +511,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
joystick - Enable joystick (default off)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Module snd-ens1371
------------------
@ -495,7 +524,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
joystick_port - port # for joystick (0x200,0x208,0x210,0x218),
0 = disable (default), 1 = auto-detect
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Module snd-es968
----------------
@ -506,8 +535,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
irq - IRQ # for ES968 (SB8) chip (PnP setup)
dma1 - DMA # for ES968 (SB8) chip (PnP setup)
Module supports up to 8 cards, PnP and autoprobe.
This module supports multiple cards, PnP and autoprobe.
The power-management is supported.
Module snd-es1688
-----------------
@ -519,7 +550,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
mpu_irq - IRQ # for MPU-401 port (5,7,9,10)
dma8 - DMA # for ES-1688 chip (0,1,3)
Module supports up to 8 cards and autoprobe (without MPU-401 port).
This module supports multiple cards and autoprobe (without MPU-401 port).
Module snd-es18xx
-----------------
@ -534,8 +565,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma2 - first DMA # for ES-18xx chip (0,1,3)
isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Module supports up to 8 cards ISA PnP and autoprobe (without MPU-401 port
if native ISA PnP routines are not used).
This module supports multiple cards, ISA PnP and autoprobe (without MPU-401
port if native ISA PnP routines are not used).
When dma2 is equal with dma1, the driver works as half-duplex.
The power-management is supported.
@ -545,7 +576,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
The power-management is supported.
Module snd-es1968
-----------------
@ -561,7 +594,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
enable_mpu - enable MPU401 (0 = off, 1 = on, 2 = auto (default))
joystick - enable joystick (default off)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
The power-management is supported.
@ -577,8 +610,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
- High 16-bits are video (radio) device number + 1
- example: 0x10002 (MediaForte 256-PCPR, device 1)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
The power-management is supported.
Module snd-gusclassic
---------------------
@ -592,7 +627,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
voices - GF1 voices limit (14-32)
pcm_voices - reserved PCM voices
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Module snd-gusextreme
---------------------
@ -611,7 +646,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
voices - GF1 voices limit (14-32)
pcm_voices - reserved PCM voices
Module supports up to 8 cards and autoprobe (without MPU-401 port).
This module supports multiple cards and autoprobe (without MPU-401 port).
Module snd-gusmax
-----------------
@ -626,7 +661,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
voices - GF1 voices limit (14-32)
pcm_voices - reserved PCM voices
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Module snd-hda-intel
--------------------
@ -688,12 +723,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
(Usually SD_LPLIB register is more accurate than the
position buffer.)
The power-management is supported.
Module snd-hdsp
---------------
Module for RME Hammerfall DSP audio interface(s)
Module supports up to 8 cards.
This module supports multiple cards.
Note: The firmware data can be automatically loaded via hotplug
when CONFIG_FW_LOADER is set. Otherwise, you need to load
@ -751,7 +788,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
cs8427_timeout - reset timeout for the CS8427 chip (S/PDIF transciever)
in msec resolution, default value is 500 (0.5 sec)
Module supports up to 8 cards and autoprobe. Note: The consumer part
This module supports multiple cards and autoprobe. Note: The consumer part
is not used with all Envy24 based cards (for example in the MidiMan Delta
serie).
@ -787,7 +824,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
aureon71, universe, k8x800, phase22, phase28, ms300,
av710
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Note: The supported board is detected by reading EEPROM or PCI
SSID (if EEPROM isn't available). You can override the
@ -839,6 +876,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.
The power-management is supported.
Module snd-interwave
--------------------
@ -855,7 +894,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
effect - 1 = InterWave effects enable (default 0);
requires 8 voices
Module supports up to 8 cards, autoprobe and ISA PnP.
This module supports multiple cards, autoprobe and ISA PnP.
Module snd-interwave-stb
------------------------
@ -875,14 +914,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
effect - 1 = InterWave effects enable (default 0);
requires 8 voices
Module supports up to 8 cards, autoprobe and ISA PnP.
This module supports multiple cards, autoprobe and ISA PnP.
Module snd-korg1212
-------------------
Module for Korg 1212 IO PCI card
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-maestro3
-------------------
@ -894,7 +933,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
-1 for default pin (8 for allegro, 1 for
others)
Module supports autoprobe and multiple chips (max 8).
This module supports autoprobe and multiple chips.
Note: the binding of amplifier is dependent on hardware.
If there is no sound even though all channels are unmuted, try to
@ -909,7 +948,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module for Digigram miXart8 sound cards.
Module supports multiple cards.
This module supports multiple cards.
Note: One miXart8 board will be represented as 4 alsa cards.
See MIXART.txt for details.
@ -928,7 +967,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
irq - IRQ number or -1 (disable)
pnp - PnP detection - 0 = disable, 1 = enable (default)
Module supports multiple devices (max 8) and PnP.
This module supports multiple devices and PnP.
Module snd-mtpav
----------------
@ -1014,7 +1053,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma2 - second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable
isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Module supports up to 8 cards and ISA PnP. This module does not support
This module supports multiple cards and ISA PnP. It does not support
autoprobe (if ISA PnP is not used) thus all ports must be specified!!!
The power-management is supported.
@ -1064,6 +1103,13 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
This module supports only one card, autoprobe and PnP.
Module snd-pcxhr
----------------
Module for Digigram PCXHR boards
This module supports multiple cards.
Module snd-powermac (on ppc only)
---------------------------------
@ -1084,20 +1130,22 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
For ARM architecture only.
The power-management is supported.
Module snd-rme32
----------------
Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek'd Prodif32,
Prodif96 and Prodif Gold) sound cards.
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-rme96
----------------
Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-rme9652
------------------
@ -1107,7 +1155,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
precise_ptr - Enable precise pointer (doesn't work reliably).
(default = 0)
Module supports up to 8 cards.
This module supports multiple cards.
Note: snd-page-alloc module does the job which snd-hammerfall-mem
module did formerly. It will allocate the buffers in advance
@ -1124,6 +1172,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module supports only one card.
Module has no enable and index options.
The power-management is supported.
Module snd-sb8
--------------
@ -1135,8 +1185,10 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
irq - IRQ # for SB DSP chip (5,7,9,10)
dma8 - DMA # for SB DSP chip (1,3)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
The power-management is supported.
Module snd-sb16 and snd-sbawe
-----------------------------
@ -1155,7 +1207,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
csp - ASP/CSP chip support - 0 = disable (default), 1 = enable
isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Module supports up to 8 cards, autoprobe and ISA PnP.
This module supports multiple cards, autoprobe and ISA PnP.
Note: To use Vibra16X cards in 16-bit half duplex mode, you must
disable 16bit DMA with dma16 = -1 module parameter.
@ -1163,6 +1215,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
half duplex mode through 8-bit DMA channel by disabling their
16-bit DMA channel.
The power-management is supported.
Module snd-sgalaxy
------------------
@ -1173,7 +1227,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
irq - IRQ # (7,9,10,11)
dma1 - DMA #
Module supports up to 8 cards.
This module supports multiple cards.
The power-management is supported.
Module snd-sscape
-----------------
@ -1185,7 +1241,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
mpu_irq - MPU-401 IRQ # (PnP setup)
dma - DMA # (PnP setup)
Module supports up to 8 cards. ISA PnP must be enabled.
This module supports multiple cards. ISA PnP must be enabled.
You need sscape_ctl tool in alsa-tools package for loading
the microcode.
@ -1194,21 +1250,21 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Module for AMD7930 sound chips found on Sparcs.
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-sun-cs4231 (on sparc only)
-------------------------------------
Module for CS4231 sound chips found on Sparcs.
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-sun-dbri (on sparc only)
-----------------------------------
Module for DBRI sound chips found on Sparcs.
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-wavefront
--------------------
@ -1228,7 +1284,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
dma2 - DMA2 # for CS4232 PCM interface.
isapnp - ISA PnP detection - 0 = disable, 1 = enable (default)
Module supports up to 8 cards and ISA PnP.
This module supports multiple cards and ISA PnP.
Module snd-sonicvibes
---------------------
@ -1240,7 +1296,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
- SoundCard must have onboard SRAM for this.
mge - Mic Gain Enable - 1 = enable, 0 = disable (default)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
Module snd-serial-u16550
------------------------
@ -1259,7 +1315,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,
3 = MS-124W M/B, 4 = Generic
Module supports up to 8 cards. This module does not support autoprobe
This module supports multiple cards. This module does not support autoprobe
thus the main port must be specified!!! Other options are optional.
Module snd-trident
@ -1278,7 +1334,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
pcm_channels - max channels (voices) reserved for PCM
wavetable_size - max wavetable size in kB (4-?kb)
Module supports up to 8 cards and autoprobe.
This module supports multiple cards and autoprobe.
The power-management is supported.
@ -1290,14 +1346,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
vid - Vendor ID for the device (optional)
pid - Product ID for the device (optional)
This module supports up to 8 cards, autoprobe and hotplugging.
This module supports multiple devices, autoprobe and hotplugging.
Module snd-usb-usx2y
--------------------
Module for Tascam USB US-122, US-224 and US-428 devices.
This module supports up to 8 cards, autoprobe and hotplugging.
This module supports multiple devices, autoprobe and hotplugging.
Note: you need to load the firmware via usx2yloader utility included
in alsa-tools and alsa-firmware packages.
@ -1356,6 +1412,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Note: for the MPU401 on VIA823x, use snd-mpu401 driver
additionally. The mpu_port option is for VIA686 chips only.
The power-management is supported.
Module snd-via82xx-modem
------------------------
@ -1368,6 +1426,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Note: The default index value of this module is -2, i.e. the first
slot is excluded.
The power-management is supported.
Module snd-virmidi
------------------
@ -1375,9 +1435,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
This module creates virtual rawmidi devices which communicate
to the corresponding ALSA sequencer ports.
midi_devs - MIDI devices # (1-8, default=4)
midi_devs - MIDI devices # (1-4, default=4)
Module supports up to 8 cards.
This module supports multiple cards.
Module snd-vx222
----------------
@ -1387,7 +1447,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
mic - Enable Microphone on V222 Mic (NYI)
ibl - Capture IBL size. (default = 0, minimum size)
Module supports up to 8 cards.
This module supports multiple cards.
When the driver is compiled as a module and the hotplug firmware
is supported, the firmware data is loaded via hotplug automatically.
@ -1406,6 +1466,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
size is chosen. The possible IBL values can be found in
/proc/asound/cardX/vx-status proc file.
The power-management is supported.
Module snd-vxpocket
-------------------
@ -1413,7 +1475,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
ibl - Capture IBL size. (default = 0, minimum size)
Module supports up to 8 cards. The module is compiled only when
This module supports multiple cards. The module is compiled only when
PCMCIA is supported on kernel.
With the older 2.6.x kernel, to activate the driver via the card
@ -1434,6 +1496,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Note2: snd-vxp440 driver is merged to snd-vxpocket driver since
ALSA 1.0.10.
The power-management is supported.
Module snd-ymfpci
-----------------
@ -1447,7 +1511,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
1 (auto-detect)
rear_switch - enable shared rear/line-in switch (bool)
Module supports autoprobe and multiple chips (max 8).
This module supports autoprobe and multiple chips.
The power-management is supported.
@ -1458,6 +1522,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
Note: the driver is build only when CONFIG_ISA is set.
The power-management is supported.
AC97 Quirk Option
=================
@ -1474,7 +1540,7 @@ the proper value with this option.
The following strings are accepted:
- default Don't override the default setting
- disable Disable the quirk
- none Disable the quirk
- hp_only Bind Master and Headphone controls as a single control
- swap_hp Swap headphone and master controls
- swap_surround Swap master and surround controls

592
Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl
View File

File diff suppressed because it is too large Load Diff

16
Documentation/sound/alsa/Procfile.txt
View File

@ -138,6 +138,22 @@ card*/codec97#0/ac97#?-?+regs
# echo 02 9f1f > /proc/asound/card0/codec97#0/ac97#0-0+regs
USB Audio Streams
-----------------
card*/stream*
Shows the assignment and the current status of each audio stream
of the given card. This information is very useful for debugging.
HD-Audio Codecs
---------------
card*/codec#*
Shows the general codec information and the attribute of each
widget node.
Sequencer Information
---------------------

14
Documentation/sound/alsa/hda_codec.txt
View File

@ -63,7 +63,7 @@ The bus instance is created via snd_hda_bus_new(). You need to pass
the card instance, the template, and the pointer to store the
resultant bus instance.
int snd_hda_bus_new(snd_card_t *card, const struct hda_bus_template *temp,
int snd_hda_bus_new(struct snd_card *card, const struct hda_bus_template *temp,
struct hda_bus **busp);
It returns zero if successful. A negative return value means any
@ -166,14 +166,14 @@ The ops field contains the following callback functions:
struct hda_pcm_ops {
int (*open)(struct hda_pcm_stream *info, struct hda_codec *codec,
snd_pcm_substream_t *substream);
struct snd_pcm_substream *substream);
int (*close)(struct hda_pcm_stream *info, struct hda_codec *codec,
snd_pcm_substream_t *substream);
struct snd_pcm_substream *substream);
int (*prepare)(struct hda_pcm_stream *info, struct hda_codec *codec,
unsigned int stream_tag, unsigned int format,
snd_pcm_substream_t *substream);
struct snd_pcm_substream *substream);
int (*cleanup)(struct hda_pcm_stream *info, struct hda_codec *codec,
snd_pcm_substream_t *substream);
struct snd_pcm_substream *substream);
};
All are non-NULL, so you can call them safely without NULL check.
@ -284,7 +284,7 @@ parameter, and PCI subsystem IDs. If the matching entry is found, it
returns the config field value.
snd_hda_add_new_ctls() can be used to create and add control entries.
Pass the zero-terminated array of snd_kcontrol_new_t. The same array
Pass the zero-terminated array of struct snd_kcontrol_new. The same array
can be passed to snd_hda_resume_ctls() for resume.
Note that this will call control->put callback of these entries. So,
put callback should check codec->in_resume and force to restore the
@ -292,7 +292,7 @@ given value if it's non-zero even if the value is identical with the
cached value.
Macros HDA_CODEC_VOLUME(), HDA_CODEC_MUTE() and their variables can be
used for the entry of snd_kcontrol_new_t.
used for the entry of struct snd_kcontrol_new.
The input MUX helper callbacks for such a control are provided, too:
snd_hda_input_mux_info() and snd_hda_input_mux_put(). See

6
Documentation/sysrq.txt
View File

@ -202,17 +202,13 @@ you must call __handle_sysrq_nolock instead.
* I have more questions, who can I ask?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
You may feel free to send email to myrdraal@deathsdoor.com, and I will
respond as soon as possible.
-Myrdraal
And I'll answer any questions about the registration system you got, also
responding as soon as possible.
-Crutcher
* Credits
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Written by Mydraal <myrdraal@deathsdoor.com>
Written by Mydraal <vulpyne@vulpyne.net>
Updated by Adam Sulmicki <adam@cfar.umd.edu>
Updated by Jeremy M. Dolan <jmd@turbogeek.org> 2001/01/28 10:15:59
Added to by Crutcher Dunnavant <crutcher+kernel@datastacks.com>

73
MAINTAINERS
View File

@ -258,6 +258,13 @@ P: Ivan Kokshaysky
M: ink@jurassic.park.msu.ru
S: Maintained for 2.4; PCI support for 2.6.
AMD GEODE PROCESSOR/CHIPSET SUPPORT
P: Jordan Crouse
M: info-linux@geode.amd.com
L: info-linux@geode.amd.com
W: http://www.amd.com/us-en/ConnectivitySolutions/TechnicalResources/0,,50_2334_2452_11363,00.html
S: Supported
APM DRIVER
P: Stephen Rothwell
M: sfr@canb.auug.org.au
@ -536,7 +543,7 @@ P: Mauro Carvalho Chehab
M: mchehab@brturbo.com.br
L: video4linux-list@redhat.com
W: http://linuxtv.org
T: quilt http://www.linuxtv.org/download/quilt/
T: git kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb.git
S: Maintained
BUSLOGIC SCSI DRIVER
@ -554,6 +561,11 @@ W: http://us1.samba.org/samba/Linux_CIFS_client.html
T: git kernel.org:/pub/scm/linux/kernel/git/sfrench/cifs-2.6.git
S: Supported
CONFIGFS
P: Joel Becker
M: Joel Becker <joel.becker@oracle.com>
S: Supported
CIRRUS LOGIC GENERIC FBDEV DRIVER
P: Jeff Garzik
M: jgarzik@pobox.com
@ -650,6 +662,11 @@ L: linux-crypto@vger.kernel.org
T: git kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6.git
S: Maintained
CS5535 Audio ALSA driver
P: Jaya Kumar
M: jayakumar.alsa@gmail.com
S: Maintained
CYBERPRO FB DRIVER
P: Russell King
M: rmk@arm.linux.org.uk
@ -679,13 +696,6 @@ M: pc300@cyclades.com
W: http://www.cyclades.com/
S: Supported
DAC960 RAID CONTROLLER DRIVER
P: Dave Olien
M dmo@osdl.org
W: http://www.osdl.org/archive/dmo/DAC960
L: linux-kernel@vger.kernel.org
S: Maintained
DAMA SLAVE for AX.25
P: Joerg Reuter
M: jreuter@yaina.de
@ -834,7 +844,7 @@ P: LinuxTV.org Project
M: linux-dvb-maintainer@linuxtv.org
L: linux-dvb@linuxtv.org (subscription required)
W: http://linuxtv.org/
T: quilt http://www.linuxtv.org/download/quilt/
T: git kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb.git
S: Supported
EATA-DMA SCSI DRIVER
@ -1225,7 +1235,7 @@ IEEE 1394 SUBSYSTEM
P: Ben Collins
M: bcollins@debian.org
P: Jody McIntyre
M: scjody@steamballoon.com
M: scjody@modernduck.com
L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
T: git kernel.org:/pub/scm/linux/kernel/git/scjody/ieee1394.git
@ -1235,14 +1245,14 @@ IEEE 1394 OHCI DRIVER
P: Ben Collins
M: bcollins@debian.org
P: Jody McIntyre
M: scjody@steamballoon.com
M: scjody@modernduck.com
L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
S: Maintained
IEEE 1394 PCILYNX DRIVER
P: Jody McIntyre
M: scjody@steamballoon.com
M: scjody@modernduck.com
L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
S: Maintained
@ -1284,8 +1294,8 @@ T: git kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git
S: Supported
INPUT (KEYBOARD, MOUSE, JOYSTICK) DRIVERS
P: Vojtech Pavlik
M: vojtech@suse.cz
P: Dmitry Torokhov
M: dtor_core@ameritech.net
L: linux-input@atrey.karlin.mff.cuni.cz
L: linux-joystick@atrey.karlin.mff.cuni.cz
T: git kernel.org:/pub/scm/linux/kernel/git/dtor/input.git
@ -1465,7 +1475,6 @@ P: Several
L: kernel-janitors@osdl.org
W: http://www.kerneljanitors.org/
W: http://sf.net/projects/kernel-janitor/
W: http://developer.osdl.org/rddunlap/kj-patches/
S: Maintained
KERNEL NFSD
@ -1476,17 +1485,11 @@ W: http://nfs.sourceforge.net/
W: http://www.cse.unsw.edu.au/~neilb/patches/linux-devel/
S: Maintained
KERNEL EVENT LAYER (KOBJECT_UEVENT)
P: Robert Love
M: rml@novell.com
L: linux-kernel@vger.kernel.org
S: Maintained
KEXEC
P: Eric Biederman
P: Randy Dunlap
M: ebiederm@xmission.com
M: rddunlap@osdl.org
M: rdunlap@xenotime.net
W: http://www.xmission.com/~ebiederm/files/kexec/
L: linux-kernel@vger.kernel.org
L: fastboot@osdl.org
@ -1900,6 +1903,15 @@ M: ajoshi@shell.unixbox.com
L: linux-nvidia@lists.surfsouth.com
S: Maintained
ORACLE CLUSTER FILESYSTEM 2 (OCFS2)
P: Mark Fasheh
M: mark.fasheh@oracle.com
P: Kurt Hackel
M: kurt.hackel@oracle.com
L: ocfs2-devel@oss.oracle.com
W: http://oss.oracle.com/projects/ocfs2/
S: Supported
OLYMPIC NETWORK DRIVER
P: Peter De Shrijver
M: p2@ace.ulyssis.student.kuleuven.ac.be
@ -2587,7 +2599,6 @@ S: Maintained
UDF FILESYSTEM
P: Ben Fennema
M: bfennema@falcon.csc.calpoly.edu
L: linux_udf@hpesjro.fc.hp.com
W: http://linux-udf.sourceforge.net
S: Maintained
@ -2640,6 +2651,12 @@ L: linux-usb-users@lists.sourceforge.net
L: linux-usb-devel@lists.sourceforge.net
S: Maintained
USB ISP116X DRIVER
P: Olav Kongas
M: ok@artecdesign.ee
L: linux-usb-devel@lists.sourceforge.net
S: Maintained
USB KAWASAKI LSI DRIVER
P: Oliver Neukum
M: oliver@neukum.name
@ -2651,7 +2668,7 @@ USB MASS STORAGE DRIVER
P: Matthew Dharm
M: mdharm-usb@one-eyed-alien.net
L: linux-usb-users@lists.sourceforge.net
L: linux-usb-devel@lists.sourceforge.net
L: usb-storage@lists.one-eyed-alien.net
S: Maintained
W: http://www.one-eyed-alien.net/~mdharm/linux-usb/
@ -2896,7 +2913,13 @@ P: Mauro Carvalho Chehab
M: mchehab@brturbo.com.br
L: video4linux-list@redhat.com
W: http://linuxtv.org
T: quilt http://www.linuxtv.org/download/quilt/
T: git kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb.git
S: Maintained
VT8231 HARDWARE MONITOR DRIVER
P: Roger Lucas
M: roger@planbit.co.uk
L: lm-sensors@lm-sensors.org
S: Maintained
W1 DALLAS'S 1-WIRE BUS

36
Makefile
View File

@ -1,8 +1,8 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 15
EXTRAVERSION =-rc5
NAME=Affluent Albatross
EXTRAVERSION =
NAME=Sliding Snow Leopard
# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
@ -286,10 +286,6 @@ export quiet Q KBUILD_VERBOSE
cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
# For backward compatibility
check_gcc = $(warning check_gcc is deprecated - use cc-option) \
$(call cc-option, $(1),$(2))
# cc-option-yn
# Usage: flag := $(call cc-option-yn, -march=winchip-c6)
cc-option-yn = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
@ -408,7 +404,7 @@ outputmakefile:
# of make so .config is not included in this case either (for *config).
no-dot-config-targets := clean mrproper distclean \
cscope TAGS tags help %docs check% kernelrelease
cscope TAGS tags help %docs check%
config-targets := 0
mixed-targets := 0
@ -481,18 +477,20 @@ ifeq ($(dot-config),1)
# Read in dependencies to all Kconfig* files, make sure to run
# oldconfig if changes are detected.
-include .config.cmd
-include .kconfig.d
include .config
# If .config needs to be updated, it will be done via the dependency
# that autoconf has on .config.
# To avoid any implicit rule to kick in, define an empty command
.config: ;
.config .kconfig.d: ;
# If .config is newer than include/linux/autoconf.h, someone tinkered
# with it and forgot to run make oldconfig
include/linux/autoconf.h: .config
# with it and forgot to run make oldconfig.
# If kconfig.d is missing then we are probarly in a cleaned tree so
# we execute the config step to be sure to catch updated Kconfig files
include/linux/autoconf.h: .kconfig.d .config
$(Q)mkdir -p include/linux
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
else
@ -1066,7 +1064,7 @@ help:
@echo ' all - Build all targets marked with [*]'
@echo '* vmlinux - Build the bare kernel'
@echo '* modules - Build all modules'
@echo ' modules_install - Install all modules'
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
@echo ' dir/ - Build all files in dir and below'
@echo ' dir/file.[ois] - Build specified target only'
@echo ' dir/file.ko - Build module including final link'
@ -1240,8 +1238,11 @@ cscope: FORCE
quiet_cmd_TAGS = MAKE $@
define cmd_TAGS
rm -f $@; \
ETAGSF=`etags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
$(all-sources) | xargs etags $$ETAGSF -a
ETAGSF=`etags --version | grep -i exuberant >/dev/null && \
echo "-I __initdata,__exitdata,__acquires,__releases \
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
--extra=+f --c-kinds=+px"`; \
$(all-sources) | xargs etags $$ETAGSF -a
endef
TAGS: FORCE
@ -1251,8 +1252,11 @@ TAGS: FORCE
quiet_cmd_tags = MAKE $@
define cmd_tags
rm -f $@; \
CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
$(all-sources) | xargs ctags $$CTAGSF -a
CTAGSF=`ctags --version | grep -i exuberant >/dev/null && \
echo "-I __initdata,__exitdata,__acquires,__releases \
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
--extra=+f --c-kinds=+px"`; \
$(all-sources) | xargs ctags $$CTAGSF -a
endef
tags: FORCE

13
arch/alpha/Kconfig
View File

@ -40,6 +40,19 @@ config GENERIC_IOMAP
bool
default n
config GENERIC_HARDIRQS
bool
default y
config GENERIC_IRQ_PROBE
bool
default y
config AUTO_IRQ_AFFINITY
bool
depends on SMP
default y
source "init/Kconfig"

1
arch/alpha/kernel/alpha_ksyms.c
View File

@ -175,7 +175,6 @@ EXPORT_SYMBOL(up);
*/
#ifdef CONFIG_SMP
EXPORT_SYMBOL(synchronize_irq);
EXPORT_SYMBOL(flush_tlb_mm);
EXPORT_SYMBOL(flush_tlb_range);
EXPORT_SYMBOL(flush_tlb_page);

630
arch/alpha/kernel/irq.c
View File

@ -32,214 +32,25 @@
#include <asm/io.h>
#include <asm/uaccess.h>
/*
* Controller mappings for all interrupt sources:
*/
irq_desc_t irq_desc[NR_IRQS] __cacheline_aligned = {
[0 ... NR_IRQS-1] = {
.handler = &no_irq_type,
.lock = SPIN_LOCK_UNLOCKED
}
};
static void register_irq_proc(unsigned int irq);
volatile unsigned long irq_err_count;
/*
* Special irq handlers.
*/
irqreturn_t no_action(int cpl, void *dev_id, struct pt_regs *regs)
{
return IRQ_NONE;
}
/*
* Generic no controller code
*/
static void no_irq_enable_disable(unsigned int irq) { }
static unsigned int no_irq_startup(unsigned int irq) { return 0; }
static void
no_irq_ack(unsigned int irq)
void ack_bad_irq(unsigned int irq)
{
irq_err_count++;
printk(KERN_CRIT "Unexpected IRQ trap at vector %u\n", irq);
}
struct hw_interrupt_type no_irq_type = {
.typename = "none",
.startup = no_irq_startup,
.shutdown = no_irq_enable_disable,
.enable = no_irq_enable_disable,
.disable = no_irq_enable_disable,
.ack = no_irq_ack,
.end = no_irq_enable_disable,
};
int
handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
struct irqaction *action)
{
int status = 1; /* Force the "do bottom halves" bit */
int ret;
do {
if (!(action->flags & SA_INTERRUPT))
local_irq_enable();
else
local_irq_disable();
ret = action->handler(irq, action->dev_id, regs);
if (ret == IRQ_HANDLED)
status |= action->flags;
action = action->next;
} while (action);
if (status & SA_SAMPLE_RANDOM)
add_interrupt_randomness(irq);
local_irq_disable();
return status;
}
/*
* Generic enable/disable code: this just calls
* down into the PIC-specific version for the actual
* hardware disable after having gotten the irq
* controller lock.
*/
void inline
disable_irq_nosync(unsigned int irq)
{
irq_desc_t *desc = irq_desc + irq;
unsigned long flags;
spin_lock_irqsave(&desc->lock, flags);
if (!desc->depth++) {
desc->status |= IRQ_DISABLED;
desc->handler->disable(irq);
}
spin_unlock_irqrestore(&desc->lock, flags);
}
/*
* Synchronous version of the above, making sure the IRQ is
* no longer running on any other IRQ..
*/
void
disable_irq(unsigned int irq)
{
disable_irq_nosync(irq);
synchronize_irq(irq);
}
void
enable_irq(unsigned int irq)
{
irq_desc_t *desc = irq_desc + irq;
unsigned long flags;
spin_lock_irqsave(&desc->lock, flags);
switch (desc->depth) {
case 1: {
unsigned int status = desc->status & ~IRQ_DISABLED;
desc->status = status;
if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
desc->status = status | IRQ_REPLAY;
hw_resend_irq(desc->handler,irq);
}
desc->handler->enable(irq);
/* fall-through */
}
default:
desc->depth--;
break;
case 0:
printk(KERN_ERR "enable_irq() unbalanced from %p\n",
__builtin_return_address(0));
}
spin_unlock_irqrestore(&desc->lock, flags);
}
int
setup_irq(unsigned int irq, struct irqaction * new)
{
int shared = 0;
struct irqaction *old, **p;
unsigned long flags;
irq_desc_t *desc = irq_desc + irq;
if (desc->handler == &no_irq_type)
return -ENOSYS;
/*
* Some drivers like serial.c use request_irq() heavily,
* so we have to be careful not to interfere with a
* running system.
*/
if (new->flags & SA_SAMPLE_RANDOM) {
/*
* This function might sleep, we want to call it first,
* outside of the atomic block.
* Yes, this might clear the entropy pool if the wrong
* driver is attempted to be loaded, without actually
* installing a new handler, but is this really a problem,
* only the sysadmin is able to do this.
*/
rand_initialize_irq(irq);
}
/*
* The following block of code has to be executed atomically
*/
spin_lock_irqsave(&desc->lock,flags);
p = &desc->action;
if ((old = *p) != NULL) {
/* Can't share interrupts unless both agree to */
if (!(old->flags & new->flags & SA_SHIRQ)) {
spin_unlock_irqrestore(&desc->lock,flags);
return -EBUSY;
}
/* add new interrupt at end of irq queue */
do {
p = &old->next;
old = *p;
} while (old);
shared = 1;
}
*p = new;
if (!shared) {
desc->depth = 0;
desc->status &=
~(IRQ_DISABLED|IRQ_AUTODETECT|IRQ_WAITING|IRQ_INPROGRESS);
desc->handler->startup(irq);
}
spin_unlock_irqrestore(&desc->lock,flags);
return 0;
}
static struct proc_dir_entry * root_irq_dir;
static struct proc_dir_entry * irq_dir[NR_IRQS];
#ifdef CONFIG_SMP
static struct proc_dir_entry * smp_affinity_entry[NR_IRQS];
static char irq_user_affinity[NR_IRQS];
static cpumask_t irq_affinity[NR_IRQS] = { [0 ... NR_IRQS-1] = CPU_MASK_ALL };
static void
select_smp_affinity(int irq)
int
select_smp_affinity(unsigned int irq)
{
static int last_cpu;
int cpu = last_cpu + 1;
if (! irq_desc[irq].handler->set_affinity || irq_user_affinity[irq])
return;
if (!irq_desc[irq].handler->set_affinity || irq_user_affinity[irq])
return 1;
while (!cpu_possible(cpu))
cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
@ -247,208 +58,10 @@ select_smp_affinity(int irq)
irq_affinity[irq] = cpumask_of_cpu(cpu);
irq_desc[irq].handler->set_affinity(irq, cpumask_of_cpu(cpu));
return 0;
}
static int
irq_affinity_read_proc (char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len = cpumask_scnprintf(page, count, irq_affinity[(long)data]);
if (count - len < 2)
return -EINVAL;
len += sprintf(page + len, "\n");
return len;
}
static int
irq_affinity_write_proc(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
int irq = (long) data, full_count = count, err;
cpumask_t new_value;
if (!irq_desc[irq].handler->set_affinity)
return -EIO;
err = cpumask_parse(buffer, count, new_value);
/* The special value 0 means release control of the
affinity to kernel. */
cpus_and(new_value, new_value, cpu_online_map);
if (cpus_empty(new_value)) {
irq_user_affinity[irq] = 0;
select_smp_affinity(irq);
}
/* Do not allow disabling IRQs completely - it's a too easy
way to make the system unusable accidentally :-) At least
one online CPU still has to be targeted. */
else {
irq_affinity[irq] = new_value;
irq_user_affinity[irq] = 1;
irq_desc[irq].handler->set_affinity(irq, new_value);
}
return full_count;
}
#endif /* CONFIG_SMP */
#define MAX_NAMELEN 10
static void
register_irq_proc (unsigned int irq)
{
char name [MAX_NAMELEN];
if (!root_irq_dir || (irq_desc[irq].handler == &no_irq_type) ||
irq_dir[irq])
return;
memset(name, 0, MAX_NAMELEN);
sprintf(name, "%d", irq);
/* create /proc/irq/1234 */
irq_dir[irq] = proc_mkdir(name, root_irq_dir);
#ifdef CONFIG_SMP
if (irq_desc[irq].handler->set_affinity) {
struct proc_dir_entry *entry;
/* create /proc/irq/1234/smp_affinity */
entry = create_proc_entry("smp_affinity", 0600, irq_dir[irq]);
if (entry) {
entry->nlink = 1;
entry->data = (void *)(long)irq;
entry->read_proc = irq_affinity_read_proc;
entry->write_proc = irq_affinity_write_proc;
}
smp_affinity_entry[irq] = entry;
}
#endif
}
void
init_irq_proc (void)
{
int i;
/* create /proc/irq */
root_irq_dir = proc_mkdir("irq", NULL);
#ifdef CONFIG_SMP
/* create /proc/irq/prof_cpu_mask */
create_prof_cpu_mask(root_irq_dir);
#endif
/*
* Create entries for all existing IRQs.
*/
for (i = 0; i < ACTUAL_NR_IRQS; i++) {
if (irq_desc[i].handler == &no_irq_type)
continue;
register_irq_proc(i);
}
}
int
request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *),
unsigned long irqflags, const char * devname, void *dev_id)
{
int retval;
struct irqaction * action;
if (irq >= ACTUAL_NR_IRQS)
return -EINVAL;
if (!handler)
return -EINVAL;
#if 1
/*
* Sanity-check: shared interrupts should REALLY pass in
* a real dev-ID, otherwise we'll have trouble later trying
* to figure out which interrupt is which (messes up the
* interrupt freeing logic etc).
*/
if ((irqflags & SA_SHIRQ) && !dev_id) {
printk(KERN_ERR
"Bad boy: %s (at %p) called us without a dev_id!\n",
devname, __builtin_return_address(0));
}
#endif
action = (struct irqaction *)
kmalloc(sizeof(struct irqaction), GFP_KERNEL);
if (!action)
return -ENOMEM;
action->handler = handler;
action->flags = irqflags;
cpus_clear(action->mask);
action->name = devname;
action->next = NULL;
action->dev_id = dev_id;
#ifdef CONFIG_SMP
select_smp_affinity(irq);
#endif
retval = setup_irq(irq, action);
if (retval)
kfree(action);
return retval;
}
EXPORT_SYMBOL(request_irq);
void
free_irq(unsigned int irq, void *dev_id)
{
irq_desc_t *desc;
struct irqaction **p;
unsigned long flags;
if (irq >= ACTUAL_NR_IRQS) {
printk(KERN_CRIT "Trying to free IRQ%d\n", irq);
return;
}
desc = irq_desc + irq;
spin_lock_irqsave(&desc->lock,flags);
p = &desc->action;
for (;;) {
struct irqaction * action = *p;
if (action) {
struct irqaction **pp = p;
p = &action->next;
if (action->dev_id != dev_id)
continue;
/* Found - now remove it from the list of entries. */
*pp = action->next;
if (!desc->action) {
desc->status |= IRQ_DISABLED;
desc->handler->shutdown(irq);
}
spin_unlock_irqrestore(&desc->lock,flags);
#ifdef CONFIG_SMP
/* Wait to make sure it's not being used on
another CPU. */
while (desc->status & IRQ_INPROGRESS)
barrier();
#endif
kfree(action);
return;
}
printk(KERN_ERR "Trying to free free IRQ%d\n",irq);
spin_unlock_irqrestore(&desc->lock,flags);
return;
}
}
EXPORT_SYMBOL(free_irq);
int
show_interrupts(struct seq_file *p, void *v)
{
@ -531,10 +144,6 @@ handle_irq(int irq, struct pt_regs * regs)
* 0 return value means that this irq is already being
* handled by some other CPU. (or is disabled)
*/
int cpu = smp_processor_id();
irq_desc_t *desc = irq_desc + irq;
struct irqaction * action;
unsigned int status;
static unsigned int illegal_count=0;
if ((unsigned) irq > ACTUAL_NR_IRQS && illegal_count < MAX_ILLEGAL_IRQS ) {
@ -546,229 +155,8 @@ handle_irq(int irq, struct pt_regs * regs)
}
irq_enter();
kstat_cpu(cpu).irqs[irq]++;
spin_lock_irq(&desc->lock); /* mask also the higher prio events */
desc->handler->ack(irq);
/*
* REPLAY is when Linux resends an IRQ that was dropped earlier.
* WAITING is used by probe to mark irqs that are being tested.
*/
status = desc->status & ~(IRQ_REPLAY | IRQ_WAITING);
status |= IRQ_PENDING; /* we _want_ to handle it */
/*
* If the IRQ is disabled for whatever reason, we cannot
* use the action we have.
*/
action = NULL;
if (!(status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
action = desc->action;
status &= ~IRQ_PENDING; /* we commit to handling */
status |= IRQ_INPROGRESS; /* we are handling it */
}
desc->status = status;
/*
* If there is no IRQ handler or it was disabled, exit early.
* Since we set PENDING, if another processor is handling
* a different instance of this same irq, the other processor
* will take care of it.
*/
if (!action)
goto out;
/*
* Edge triggered interrupts need to remember pending events.
* This applies to any hw interrupts that allow a second
* instance of the same irq to arrive while we are in handle_irq
* or in the handler. But the code here only handles the _second_
* instance of the irq, not the third or fourth. So it is mostly
* useful for irq hardware that does not mask cleanly in an
* SMP environment.
*/
for (;;) {
spin_unlock(&desc->lock);
handle_IRQ_event(irq, regs, action);
spin_lock(&desc->lock);
if (!(desc->status & IRQ_PENDING)
|| (desc->status & IRQ_LEVEL))
break;
desc->status &= ~IRQ_PENDING;
}
desc->status &= ~IRQ_INPROGRESS;
out:
/*
* The ->end() handler has to deal with interrupts which got
* disabled while the handler was running.
*/
desc->handler->end(irq);
spin_unlock(&desc->lock);
local_irq_disable();
__do_IRQ(irq, regs);
local_irq_enable();
irq_exit();
}
/*
* IRQ autodetection code..
*
* This depends on the fact that any interrupt that
* comes in on to an unassigned handler will get stuck
* with "IRQ_WAITING" cleared and the interrupt
* disabled.
*/
unsigned long
probe_irq_on(void)
{
int i;
irq_desc_t *desc;
unsigned long delay;
unsigned long val;
/* Something may have generated an irq long ago and we want to
flush such a longstanding irq before considering it as spurious. */
for (i = NR_IRQS-1; i >= 0; i--) {
desc = irq_desc + i;
spin_lock_irq(&desc->lock);
if (!irq_desc[i].action)
irq_desc[i].handler->startup(i);
spin_unlock_irq(&desc->lock);
}
/* Wait for longstanding interrupts to trigger. */
for (delay = jiffies + HZ/50; time_after(delay, jiffies); )
/* about 20ms delay */ barrier();
/* enable any unassigned irqs (we must startup again here because
if a longstanding irq happened in the previous stage, it may have
masked itself) first, enable any unassigned irqs. */
for (i = NR_IRQS-1; i >= 0; i--) {
desc = irq_desc + i;
spin_lock_irq(&desc->lock);
if (!desc->action) {
desc->status |= IRQ_AUTODETECT | IRQ_WAITING;
if (desc->handler->startup(i))
desc->status |= IRQ_PENDING;
}
spin_unlock_irq(&desc->lock);
}
/*
* Wait for spurious interrupts to trigger
*/
for (delay = jiffies + HZ/10; time_after(delay, jiffies); )
/* about 100ms delay */ barrier();
/*
* Now filter out any obviously spurious interrupts
*/
val = 0;
for (i=0; i<NR_IRQS; i++) {
irq_desc_t *desc = irq_desc + i;
unsigned int status;
spin_lock_irq(&desc->lock);
status = desc->status;
if (status & IRQ_AUTODETECT) {
/* It triggered already - consider it spurious. */
if (!(status & IRQ_WAITING)) {
desc->status = status & ~IRQ_AUTODETECT;
desc->handler->shutdown(i);
} else
if (i < 32)
val |= 1 << i;
}
spin_unlock_irq(&desc->lock);
}
return val;
}
EXPORT_SYMBOL(probe_irq_on);
/*
* Return a mask of triggered interrupts (this
* can handle only legacy ISA interrupts).
*/
unsigned int
probe_irq_mask(unsigned long val)
{
int i;
unsigned int mask;
mask = 0;
for (i = 0; i < NR_IRQS; i++) {
irq_desc_t *desc = irq_desc + i;
unsigned int status;
spin_lock_irq(&desc->lock);
status = desc->status;
if (status & IRQ_AUTODETECT) {
/* We only react to ISA interrupts */
if (!(status & IRQ_WAITING)) {
if (i < 16)
mask |= 1 << i;
}
desc->status = status & ~IRQ_AUTODETECT;
desc->handler->shutdown(i);
}
spin_unlock_irq(&desc->lock);
}
return mask & val;
}
/*
* Get the result of the IRQ probe.. A negative result means that
* we have several candidates (but we return the lowest-numbered
* one).
*/
int
probe_irq_off(unsigned long val)
{
int i, irq_found, nr_irqs;
nr_irqs = 0;
irq_found = 0;
for (i=0; i<NR_IRQS; i++) {
irq_desc_t *desc = irq_desc + i;
unsigned int status;
spin_lock_irq(&desc->lock);
status = desc->status;
if (status & IRQ_AUTODETECT) {
if (!(status & IRQ_WAITING)) {
if (!nr_irqs)
irq_found = i;
nr_irqs++;
}
desc->status = status & ~IRQ_AUTODETECT;
desc->handler->shutdown(i);
}
spin_unlock_irq(&desc->lock);
}
if (nr_irqs > 1)
irq_found = -irq_found;
return irq_found;
}
EXPORT_SYMBOL(probe_irq_off);
#ifdef CONFIG_SMP
void synchronize_irq(unsigned int irq)
{
/* is there anything to synchronize with? */
if (!irq_desc[irq].action)
return;
while (irq_desc[irq].status & IRQ_INPROGRESS)
barrier();
}
#endif

2
arch/alpha/kernel/machvec_impl.h
View File

@ -41,7 +41,7 @@
#define CAT1(x,y) x##y
#define CAT(x,y) CAT1(x,y)
#define DO_DEFAULT_RTC rtc_port: 0x70
#define DO_DEFAULT_RTC .rtc_port = 0x70
#define DO_EV4_MMU \
.max_asn = EV4_MAX_ASN, \

6
arch/arm/common/amba.c
View File

@ -45,7 +45,7 @@ static int amba_match(struct device *dev, struct device_driver *drv)
}
#ifdef CONFIG_HOTPLUG
static int amba_hotplug(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
{
struct amba_device *pcdev = to_amba_device(dev);
@ -58,7 +58,7 @@ static int amba_hotplug(struct device *dev, char **envp, int nr_env, char *buf,
return 0;
}
#else
#define amba_hotplug NULL
#define amba_uevent NULL
#endif
static int amba_suspend(struct device *dev, pm_message_t state)
@ -88,7 +88,7 @@ static int amba_resume(struct device *dev)
static struct bus_type amba_bustype = {
.name = "amba",
.match = amba_match,
.hotplug = amba_hotplug,
.uevent = amba_uevent,
.suspend = amba_suspend,
.resume = amba_resume,
};

8
arch/arm/kernel/calls.S
View File

@ -131,7 +131,7 @@ __syscall_start:
.long sys_wait4
/* 115 */ .long sys_swapoff
.long sys_sysinfo
.long sys_ipc_wrapper
.long sys_ipc
.long sys_fsync
.long sys_sigreturn_wrapper
/* 120 */ .long sys_clone_wrapper
@ -254,7 +254,7 @@ __syscall_start:
.long sys_fremovexattr
.long sys_tkill
.long sys_sendfile64
/* 240 */ .long sys_futex_wrapper
/* 240 */ .long sys_futex
.long sys_sched_setaffinity
.long sys_sched_getaffinity
.long sys_io_setup
@ -284,7 +284,7 @@ __syscall_start:
.long sys_fstatfs64
.long sys_tgkill
.long sys_utimes
/* 270 */ .long sys_arm_fadvise64_64_wrapper
/* 270 */ .long sys_arm_fadvise64_64
.long sys_pciconfig_iobase
.long sys_pciconfig_read
.long sys_pciconfig_write
@ -333,7 +333,7 @@ __syscall_start:
.long sys_inotify_init
.long sys_inotify_add_watch
.long sys_inotify_rm_watch
.long sys_mbind_wrapper
.long sys_mbind
/* 320 */ .long sys_get_mempolicy
.long sys_set_mempolicy
__syscall_end:

49
arch/arm/kernel/entry-armv.S
View File

@ -611,6 +611,47 @@ ENTRY(__switch_to)
.globl __kuser_helper_start
__kuser_helper_start:
/*
* Reference prototype:
*
* void __kernel_memory_barrier(void)
*
* Input:
*
* lr = return address
*
* Output:
*
* none
*
* Clobbered:
*
* the Z flag might be lost
*
* Definition and user space usage example:
*
* typedef void (__kernel_dmb_t)(void);
* #define __kernel_dmb (*(__kernel_dmb_t *)0xffff0fa0)
*
* Apply any needed memory barrier to preserve consistency with data modified
* manually and __kuser_cmpxchg usage.
*
* This could be used as follows:
*
* #define __kernel_dmb() \
* asm volatile ( "mov r0, #0xffff0fff; mov lr, pc; sub pc, r0, #95" \
* : : : "lr","cc" )
*/
__kuser_memory_barrier: @ 0xffff0fa0
#if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_SMP)
mcr p15, 0, r0, c7, c10, 5 @ dmb
#endif
mov pc, lr
.align 5
/*
* Reference prototype:
*
@ -642,6 +683,8 @@ __kuser_helper_start:
* The C flag is also set if *ptr was changed to allow for assembly
* optimization in the calling code.
*
* Note: this routine already includes memory barriers as needed.
*
* For example, a user space atomic_add implementation could look like this:
*
* #define atomic_add(ptr, val) \
@ -698,10 +741,16 @@ __kuser_cmpxchg: @ 0xffff0fc0
#else
#ifdef CONFIG_SMP
mcr p15, 0, r0, c7, c10, 5 @ dmb
#endif
ldrex r3, [r2]
subs r3, r3, r0
strexeq r3, r1, [r2]
rsbs r0, r3, #0
#ifdef CONFIG_SMP
mcr p15, 0, r0, c7, c10, 5 @ dmb
#endif
mov pc, lr
#endif

20
arch/arm/kernel/entry-common.S
View File

@ -145,7 +145,7 @@ ENTRY(vector_swi)
#endif
enable_irq
str r4, [sp, #-S_OFF]! @ push fifth arg
stmdb sp!, {r4, r5} @ push fifth and sixth args
get_thread_info tsk
ldr ip, [tsk, #TI_FLAGS] @ check for syscall tracing
@ -204,7 +204,7 @@ ENTRY(sys_call_table)
* Special system call wrappers
*/
@ r0 = syscall number
@ r5 = syscall table
@ r8 = syscall table
.type sys_syscall, #function
sys_syscall:
eor scno, r0, #__NR_SYSCALL_BASE
@ -255,22 +255,6 @@ sys_sigaltstack_wrapper:
ldr r2, [sp, #S_OFF + S_SP]
b do_sigaltstack
sys_futex_wrapper:
str r5, [sp, #4] @ push sixth arg
b sys_futex
sys_arm_fadvise64_64_wrapper:
str r5, [sp, #4] @ push r5 to stack
b sys_arm_fadvise64_64
sys_mbind_wrapper:
str r5, [sp, #4]
b sys_mbind
sys_ipc_wrapper:
str r5, [sp, #4] @ push sixth arg
b sys_ipc
/*
* Note: off_4k (r5) is always units of 4K. If we can't do the requested
* offset, we return EINVAL.

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

@ -101,6 +101,8 @@ apply_relocate(Elf32_Shdr *sechdrs, const char *strtab, unsigned int symindex,
break;
case R_ARM_PC24:
case R_ARM_CALL:
case R_ARM_JUMP24:
offset = (*(u32 *)loc & 0x00ffffff) << 2;
if (offset & 0x02000000)
offset -= 0x04000000;

9
arch/arm/kernel/ptrace.c
View File

@ -242,6 +242,15 @@ get_branch_address(struct task_struct *child, unsigned long pc, unsigned long in
*/
long aluop1, aluop2, ccbit;
if ((insn & 0x0fffffd0) == 0x012fff10) {
/*
* bx or blx
*/
alt = get_user_reg(child, insn & 15);
break;
}
if ((insn & 0xf000) != 0xf000)
break;

7
arch/arm/mach-pxa/akita-ioexp.c
View File

@ -124,17 +124,16 @@ static int max7310_detach_client(struct i2c_client *client)
}
static struct i2c_driver max7310_i2c_driver = {
.owner = THIS_MODULE,
.name = "akita-max7310",
.driver = {
.name = "akita-max7310",
},
.id = I2C_DRIVERID_AKITAIOEXP,
.flags = I2C_DF_NOTIFY,
.attach_adapter = max7310_attach_adapter,
.detach_client = max7310_detach_client,
};
static struct i2c_client max7310_template = {
name: "akita-max7310",
flags: I2C_CLIENT_ALLOW_USE,
driver: &max7310_i2c_driver,
};

21
arch/arm/mach-pxa/mainstone.c
View File

@ -43,6 +43,7 @@
#include <asm/arch/pxafb.h>
#include <asm/arch/mmc.h>
#include <asm/arch/irda.h>
#include <asm/arch/ohci.h>
#include "generic.h"
@ -393,6 +394,25 @@ static struct platform_device *platform_devices[] __initdata = {
&mst_flash_device[1],
};
static int mainstone_ohci_init(struct device *dev)
{
/* setup Port1 GPIO pin. */
pxa_gpio_mode( 88 | GPIO_ALT_FN_1_IN); /* USBHPWR1 */
pxa_gpio_mode( 89 | GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
/* Set the Power Control Polarity Low and Power Sense
Polarity Low to active low. */
UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
return 0;
}
static struct pxaohci_platform_data mainstone_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.init = mainstone_ohci_init,
};
static void __init mainstone_init(void)
{
int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
@ -424,6 +444,7 @@ static void __init mainstone_init(void)
pxa_set_mci_info(&mainstone_mci_platform_data);
pxa_set_ficp_info(&mainstone_ficp_platform_data);
pxa_set_ohci_info(&mainstone_ohci_platform_data);
}

9
arch/arm/mach-pxa/pm.c
View File

@ -155,19 +155,20 @@ int pxa_pm_enter(suspend_state_t state)
PSPR = 0;
/* restore registers */
RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
RESTORE(GAFR0_L); RESTORE(GAFR0_U);
RESTORE(GAFR1_L); RESTORE(GAFR1_U);
RESTORE(GAFR2_L); RESTORE(GAFR2_U);
RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
RESTORE(GRER0); RESTORE(GRER1); RESTORE(GRER2);
RESTORE(GFER0); RESTORE(GFER1); RESTORE(GFER2);
RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);
#ifdef CONFIG_PXA27x
RESTORE(MDREFR);
RESTORE(GAFR3_L); RESTORE(GAFR3_U); RESTORE_GPLEVEL(3);
RESTORE(GPDR3); RESTORE(GRER3); RESTORE(GFER3); RESTORE(PGSR3);
RESTORE_GPLEVEL(3); RESTORE(GPDR3);
RESTORE(GAFR3_L); RESTORE(GAFR3_U);
RESTORE(GRER3); RESTORE(GFER3); RESTORE(PGSR3);
RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
RESTORE(PFER); RESTORE(PKWR);
#endif

6
arch/arm/mach-pxa/pxa27x.c
View File

@ -21,6 +21,7 @@
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/ohci.h>
#include "generic.h"
@ -194,6 +195,11 @@ static struct platform_device ohci_device = {
.resource = pxa27x_ohci_resources,
};
void __init pxa_set_ohci_info(struct pxaohci_platform_data *info)
{
ohci_device.dev.platform_data = info;
}
static struct platform_device *devices[] __initdata = {
&ohci_device,
};

3
arch/arm26/nwfpe/fpmodule.c
View File

@ -46,10 +46,9 @@ typedef struct task_struct* PTASK;
#ifdef MODULE
void fp_send_sig(unsigned long sig, PTASK p, int priv);
#if LINUX_VERSION_CODE > 0x20115
MODULE_AUTHOR("Scott Bambrough <scottb@rebel.com>");
MODULE_DESCRIPTION("NWFPE floating point emulator");
#endif
#else
#define fp_send_sig send_sig

6
arch/cris/arch-v10/kernel/kgdb.c
View File

@ -569,12 +569,6 @@ gdb_cris_strtol (const char *s, char **endptr, int base)
return x;
}
int
double_this(int x)
{
return 2 * x;
}
/********************************* Register image ****************************/
/* Copy the content of a register image into another. The size n is
the size of the register image. Due to struct assignment generation of

1
arch/frv/kernel/Makefile
View File

@ -20,3 +20,4 @@ obj-$(CONFIG_FUJITSU_MB93493) += irq-mb93493.o
obj-$(CONFIG_PM) += pm.o cmode.o
obj-$(CONFIG_MB93093_PDK) += pm-mb93093.o
obj-$(CONFIG_SYSCTL) += sysctl.o
obj-$(CONFIG_FUTEX) += futex.o

2
arch/frv/kernel/entry.S
View File

@ -1076,7 +1076,7 @@ __entry_work_notifysig:
LEDS 0x6410
ori.p gr4,#0,gr8
call do_notify_resume
bra __entry_return_direct
bra __entry_resume_userspace
# perform syscall entry tracing
__syscall_trace_entry:

242
arch/frv/kernel/futex.c Normal file
View File

@ -0,0 +1,242 @@
/* futex.c: futex operations
*
* Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/futex.h>
#include <asm/futex.h>
#include <asm/errno.h>
#include <asm/uaccess.h>
/*
* the various futex operations; MMU fault checking is ignored under no-MMU
* conditions
*/
static inline int atomic_futex_op_xchg_set(int oparg, int __user *uaddr, int *_oldval)
{
int oldval, ret;
asm("0: \n"
" orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
" ckeq icc3,cc7 \n"
"1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
" orcr cc7,cc7,cc3 \n" /* set CC3 to true */
"2: cst.p %3,%M0 ,cc3,#1 \n"
" corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
" beq icc3,#0,0b \n"
" setlos 0,%2 \n"
"3: \n"
".subsection 2 \n"
"4: setlos %5,%2 \n"
" bra 3b \n"
".previous \n"
".section __ex_table,\"a\" \n"
" .balign 8 \n"
" .long 1b,4b \n"
" .long 2b,4b \n"
".previous"
: "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
: "3"(oparg), "i"(-EFAULT)
: "memory", "cc7", "cc3", "icc3"
);
*_oldval = oldval;
return ret;
}
static inline int atomic_futex_op_xchg_add(int oparg, int __user *uaddr, int *_oldval)
{
int oldval, ret;
asm("0: \n"
" orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
" ckeq icc3,cc7 \n"
"1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
" orcr cc7,cc7,cc3 \n" /* set CC3 to true */
" add %1,%3,%3 \n"
"2: cst.p %3,%M0 ,cc3,#1 \n"
" corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
" beq icc3,#0,0b \n"
" setlos 0,%2 \n"
"3: \n"
".subsection 2 \n"
"4: setlos %5,%2 \n"
" bra 3b \n"
".previous \n"
".section __ex_table,\"a\" \n"
" .balign 8 \n"
" .long 1b,4b \n"
" .long 2b,4b \n"
".previous"
: "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
: "3"(oparg), "i"(-EFAULT)
: "memory", "cc7", "cc3", "icc3"
);
*_oldval = oldval;
return ret;
}
static inline int atomic_futex_op_xchg_or(int oparg, int __user *uaddr, int *_oldval)
{
int oldval, ret;
asm("0: \n"
" orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
" ckeq icc3,cc7 \n"
"1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
" orcr cc7,cc7,cc3 \n" /* set CC3 to true */
" or %1,%3,%3 \n"
"2: cst.p %3,%M0 ,cc3,#1 \n"
" corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
" beq icc3,#0,0b \n"
" setlos 0,%2 \n"
"3: \n"
".subsection 2 \n"
"4: setlos %5,%2 \n"
" bra 3b \n"
".previous \n"
".section __ex_table,\"a\" \n"
" .balign 8 \n"
" .long 1b,4b \n"
" .long 2b,4b \n"
".previous"
: "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
: "3"(oparg), "i"(-EFAULT)
: "memory", "cc7", "cc3", "icc3"
);
*_oldval = oldval;
return ret;
}
static inline int atomic_futex_op_xchg_and(int oparg, int __user *uaddr, int *_oldval)
{
int oldval, ret;
asm("0: \n"
" orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
" ckeq icc3,cc7 \n"
"1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
" orcr cc7,cc7,cc3 \n" /* set CC3 to true */
" and %1,%3,%3 \n"
"2: cst.p %3,%M0 ,cc3,#1 \n"
" corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
" beq icc3,#0,0b \n"
" setlos 0,%2 \n"
"3: \n"
".subsection 2 \n"
"4: setlos %5,%2 \n"
" bra 3b \n"
".previous \n"
".section __ex_table,\"a\" \n"
" .balign 8 \n"
" .long 1b,4b \n"
" .long 2b,4b \n"
".previous"
: "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
: "3"(oparg), "i"(-EFAULT)
: "memory", "cc7", "cc3", "icc3"
);
*_oldval = oldval;
return ret;
}
static inline int atomic_futex_op_xchg_xor(int oparg, int __user *uaddr, int *_oldval)
{
int oldval, ret;
asm("0: \n"
" orcc gr0,gr0,gr0,icc3 \n" /* set ICC3.Z */
" ckeq icc3,cc7 \n"
"1: ld.p %M0,%1 \n" /* LD.P/ORCR must be atomic */
" orcr cc7,cc7,cc3 \n" /* set CC3 to true */
" xor %1,%3,%3 \n"
"2: cst.p %3,%M0 ,cc3,#1 \n"
" corcc gr29,gr29,gr0 ,cc3,#1 \n" /* clear ICC3.Z if store happens */
" beq icc3,#0,0b \n"
" setlos 0,%2 \n"
"3: \n"
".subsection 2 \n"
"4: setlos %5,%2 \n"
" bra 3b \n"
".previous \n"
".section __ex_table,\"a\" \n"
" .balign 8 \n"
" .long 1b,4b \n"
" .long 2b,4b \n"
".previous"
: "+U"(*uaddr), "=&r"(oldval), "=&r"(ret), "=r"(oparg)
: "3"(oparg), "i"(-EFAULT)
: "memory", "cc7", "cc3", "icc3"
);
*_oldval = oldval;
return ret;
}
/*****************************************************************************/
/*
* do the futex operations
*/
int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
int cmp = (encoded_op >> 24) & 15;
int oparg = (encoded_op << 8) >> 20;
int cmparg = (encoded_op << 20) >> 20;
int oldval = 0, ret;
if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
oparg = 1 << oparg;
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
inc_preempt_count();
switch (op) {
case FUTEX_OP_SET:
ret = atomic_futex_op_xchg_set(oparg, uaddr, &oldval);
break;
case FUTEX_OP_ADD:
ret = atomic_futex_op_xchg_add(oparg, uaddr, &oldval);
break;
case FUTEX_OP_OR:
ret = atomic_futex_op_xchg_or(oparg, uaddr, &oldval);
break;
case FUTEX_OP_ANDN:
ret = atomic_futex_op_xchg_and(~oparg, uaddr, &oldval);
break;
case FUTEX_OP_XOR:
ret = atomic_futex_op_xchg_xor(oparg, uaddr, &oldval);
break;
default:
ret = -ENOSYS;
break;
}
dec_preempt_count();
if (!ret) {
switch (cmp) {
case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break;
case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break;
case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break;
case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break;
case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break;
case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break;
default: ret = -ENOSYS; break;
}
}
return ret;
} /* end futex_atomic_op_inuser() */

155
arch/frv/kernel/signal.c
View File

@ -35,7 +35,7 @@ struct fdpic_func_descriptor {
unsigned long GOT;
};
asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
static int do_signal(sigset_t *oldset);
/*
* Atomically swap in the new signal mask, and wait for a signal.
@ -55,7 +55,7 @@ asmlinkage int sys_sigsuspend(int history0, int history1, old_sigset_t mask)
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(__frame, &saveset))
if (do_signal(&saveset))
/* return the signal number as the return value of this function
* - this is an utterly evil hack. syscalls should not invoke do_signal()
* as entry.S sets regs->gr8 to the return value of the system call
@ -91,7 +91,7 @@ asmlinkage int sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize)
while (1) {
current->state = TASK_INTERRUPTIBLE;
schedule();
if (do_signal(__frame, &saveset))
if (do_signal(&saveset))
/* return the signal number as the return value of this function
* - this is an utterly evil hack. syscalls should not invoke do_signal()
* as entry.S sets regs->gr8 to the return value of the system call
@ -276,13 +276,12 @@ static int setup_sigcontext(struct sigcontext __user *sc, unsigned long mask)
* Determine which stack to use..
*/
static inline void __user *get_sigframe(struct k_sigaction *ka,
struct pt_regs *regs,
size_t frame_size)
{
unsigned long sp;
/* Default to using normal stack */
sp = regs->sp;
sp = __frame->sp;
/* This is the X/Open sanctioned signal stack switching. */
if (ka->sa.sa_flags & SA_ONSTACK) {
@ -291,18 +290,19 @@ static inline void __user *get_sigframe(struct k_sigaction *ka,
}
return (void __user *) ((sp - frame_size) & ~7UL);
} /* end get_sigframe() */
/*****************************************************************************/
/*
*
*/
static void setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, struct pt_regs * regs)
static int setup_frame(int sig, struct k_sigaction *ka, sigset_t *set)
{
struct sigframe __user *frame;
int rsig;
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(ka, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
@ -346,47 +346,51 @@ static void setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, struct p
}
/* set up registers for signal handler */
regs->sp = (unsigned long) frame;
regs->lr = (unsigned long) &frame->retcode;
regs->gr8 = sig;
__frame->sp = (unsigned long) frame;
__frame->lr = (unsigned long) &frame->retcode;
__frame->gr8 = sig;
if (get_personality & FDPIC_FUNCPTRS) {
struct fdpic_func_descriptor __user *funcptr =
(struct fdpic_func_descriptor *) ka->sa.sa_handler;
__get_user(regs->pc, &funcptr->text);
__get_user(regs->gr15, &funcptr->GOT);
__get_user(__frame->pc, &funcptr->text);
__get_user(__frame->gr15, &funcptr->GOT);
} else {
regs->pc = (unsigned long) ka->sa.sa_handler;
regs->gr15 = 0;
__frame->pc = (unsigned long) ka->sa.sa_handler;
__frame->gr15 = 0;
}
set_fs(USER_DS);
/* the tracer may want to single-step inside the handler */
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
#if DEBUG_SIG
printk("SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n",
sig, current->comm, current->pid, frame, regs->pc, frame->pretcode);
sig, current->comm, current->pid, frame, __frame->pc,
frame->pretcode);
#endif
return;
return 1;
give_sigsegv:
if (sig == SIGSEGV)
ka->sa.sa_handler = SIG_DFL;
force_sig(SIGSEGV, current);
return 0;
} /* end setup_frame() */
/*****************************************************************************/
/*
*
*/
static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs * regs)
static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set)
{
struct rt_sigframe __user *frame;
int rsig;
frame = get_sigframe(ka, regs, sizeof(*frame));
frame = get_sigframe(ka, sizeof(*frame));
if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
goto give_sigsegv;
@ -409,7 +413,7 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
if (__put_user(0, &frame->uc.uc_flags) ||
__put_user(0, &frame->uc.uc_link) ||
__put_user((void*)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp) ||
__put_user(sas_ss_flags(regs->sp), &frame->uc.uc_stack.ss_flags) ||
__put_user(sas_ss_flags(__frame->sp), &frame->uc.uc_stack.ss_flags) ||
__put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size))
goto give_sigsegv;
@ -440,34 +444,38 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
}
/* Set up registers for signal handler */
regs->sp = (unsigned long) frame;
regs->lr = (unsigned long) &frame->retcode;
regs->gr8 = sig;
regs->gr9 = (unsigned long) &frame->info;
__frame->sp = (unsigned long) frame;
__frame->lr = (unsigned long) &frame->retcode;
__frame->gr8 = sig;
__frame->gr9 = (unsigned long) &frame->info;
if (get_personality & FDPIC_FUNCPTRS) {
struct fdpic_func_descriptor *funcptr =
(struct fdpic_func_descriptor __user *) ka->sa.sa_handler;
__get_user(regs->pc, &funcptr->text);
__get_user(regs->gr15, &funcptr->GOT);
__get_user(__frame->pc, &funcptr->text);
__get_user(__frame->gr15, &funcptr->GOT);
} else {
regs->pc = (unsigned long) ka->sa.sa_handler;
regs->gr15 = 0;
__frame->pc = (unsigned long) ka->sa.sa_handler;
__frame->gr15 = 0;
}
set_fs(USER_DS);
/* the tracer may want to single-step inside the handler */
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
#if DEBUG_SIG
printk("SIG deliver %d (%s:%d): sp=%p pc=%lx ra=%p\n",
sig, current->comm, current->pid, frame, regs->pc, frame->pretcode);
sig, current->comm, current->pid, frame, __frame->pc,
frame->pretcode);
#endif
return;
return 1;
give_sigsegv:
if (sig == SIGSEGV)
ka->sa.sa_handler = SIG_DFL;
force_sig(SIGSEGV, current);
return 0;
} /* end setup_rt_frame() */
@ -475,43 +483,51 @@ give_sigsegv:
/*
* OK, we're invoking a handler
*/
static void handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset,
struct pt_regs *regs)
static int handle_signal(unsigned long sig, siginfo_t *info,
struct k_sigaction *ka, sigset_t *oldset)
{
int ret;
/* Are we from a system call? */
if (in_syscall(regs)) {
if (in_syscall(__frame)) {
/* If so, check system call restarting.. */
switch (regs->gr8) {
switch (__frame->gr8) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
regs->gr8 = -EINTR;
__frame->gr8 = -EINTR;
break;
case -ERESTARTSYS:
if (!(ka->sa.sa_flags & SA_RESTART)) {
regs->gr8 = -EINTR;
__frame->gr8 = -EINTR;
break;
}
/* fallthrough */
case -ERESTARTNOINTR:
regs->gr8 = regs->orig_gr8;
regs->pc -= 4;
__frame->gr8 = __frame->orig_gr8;
__frame->pc -= 4;
}
}
/* Set up the stack frame */
if (ka->sa.sa_flags & SA_SIGINFO)
setup_rt_frame(sig, ka, info, oldset, regs);
ret = setup_rt_frame(sig, ka, info, oldset);
else
setup_frame(sig, ka, oldset, regs);
ret = setup_frame(sig, ka, oldset);
if (ret) {
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked, &current->blocked,
&ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked, sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
}
return ret;
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked, sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
} /* end handle_signal() */
/*****************************************************************************/
@ -520,7 +536,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
* want to handle. Thus you cannot kill init even with a SIGKILL even by
* mistake.
*/
int do_signal(struct pt_regs *regs, sigset_t *oldset)
static int do_signal(sigset_t *oldset)
{
struct k_sigaction ka;
siginfo_t info;
@ -532,7 +548,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
* kernel mode. Just return without doing anything
* if so.
*/
if (!user_mode(regs))
if (!user_mode(__frame))
return 1;
if (try_to_freeze())
@ -541,30 +557,29 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
if (!oldset)
oldset = &current->blocked;
signr = get_signal_to_deliver(&info, &ka, regs, NULL);
if (signr > 0) {
handle_signal(signr, &info, &ka, oldset, regs);
return 1;
}
signr = get_signal_to_deliver(&info, &ka, __frame, NULL);
if (signr > 0)
return handle_signal(signr, &info, &ka, oldset);
no_signal:
no_signal:
/* Did we come from a system call? */
if (regs->syscallno >= 0) {
if (__frame->syscallno >= 0) {
/* Restart the system call - no handlers present */
if (regs->gr8 == -ERESTARTNOHAND ||
regs->gr8 == -ERESTARTSYS ||
regs->gr8 == -ERESTARTNOINTR) {
regs->gr8 = regs->orig_gr8;
regs->pc -= 4;
if (__frame->gr8 == -ERESTARTNOHAND ||
__frame->gr8 == -ERESTARTSYS ||
__frame->gr8 == -ERESTARTNOINTR) {
__frame->gr8 = __frame->orig_gr8;
__frame->pc -= 4;
}
if (regs->gr8 == -ERESTART_RESTARTBLOCK){
regs->gr8 = __NR_restart_syscall;
regs->pc -= 4;
if (__frame->gr8 == -ERESTART_RESTARTBLOCK){
__frame->gr8 = __NR_restart_syscall;
__frame->pc -= 4;
}
}
return 0;
} /* end do_signal() */
/*****************************************************************************/
@ -580,6 +595,6 @@ asmlinkage void do_notify_resume(__u32 thread_info_flags)
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(__frame, NULL);
do_signal(NULL);
} /* end do_notify_resume() */

8
arch/i386/Kconfig
View File

@ -464,7 +464,6 @@ config NUMA
depends on SMP && HIGHMEM64G && (X86_NUMAQ || X86_GENERICARCH || (X86_SUMMIT && ACPI))
default n if X86_PC
default y if (X86_NUMAQ || X86_SUMMIT)
select SPARSEMEM_STATIC
# Need comments to help the hapless user trying to turn on NUMA support
comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support"
@ -493,6 +492,10 @@ config HAVE_ARCH_ALLOC_REMAP
depends on NUMA
default y
config ARCH_FLATMEM_ENABLE
def_bool y
depends on (ARCH_SELECT_MEMORY_MODEL && X86_PC)
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
depends on NUMA
@ -503,7 +506,8 @@ config ARCH_DISCONTIGMEM_DEFAULT
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on NUMA
depends on (NUMA || (X86_PC && EXPERIMENTAL))
select SPARSEMEM_STATIC
config ARCH_SELECT_MEMORY_MODEL
def_bool y

14
arch/i386/Kconfig.cpu
View File

@ -39,6 +39,7 @@ config M386
- "Winchip-2" for IDT Winchip 2.
- "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
- "GeodeGX1" for Geode GX1 (Cyrix MediaGX).
- "Geode GX/LX" For AMD Geode GX and LX processors.
- "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.
- "VIA C3-2 for VIA C3-2 "Nehemiah" (model 9 and above).
@ -171,6 +172,11 @@ config MGEODEGX1
help
Select this for a Geode GX1 (Cyrix MediaGX) chip.
config MGEODE_LX
bool "Geode GX/LX"
help
Select this for AMD Geode GX and LX processors.
config MCYRIXIII
bool "CyrixIII/VIA-C3"
help
@ -220,8 +226,8 @@ config X86_XADD
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || X86_GENERIC
default "4" if X86_ELAN || M486 || M386
default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODEGX1
default "4" if X86_ELAN || M486 || M386 || MGEODEGX1
default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
default "6" if MK7 || MK8 || MPENTIUMM
config RWSEM_GENERIC_SPINLOCK
@ -290,12 +296,12 @@ config X86_INTEL_USERCOPY
config X86_USE_PPRO_CHECKSUM
bool
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX
default y
config X86_USE_3DNOW
bool
depends on MCYRIXIII || MK7
depends on MCYRIXIII || MK7 || MGEODE_LX
default y
config X86_OOSTORE

10
arch/i386/Kconfig.debug
View File

@ -42,6 +42,16 @@ config DEBUG_PAGEALLOC
This results in a large slowdown, but helps to find certain types
of memory corruptions.
config DEBUG_RODATA
bool "Write protect kernel read-only data structures"
depends on DEBUG_KERNEL
help
Mark the kernel read-only data as write-protected in the pagetables,
in order to catch accidental (and incorrect) writes to such const
data. This option may have a slight performance impact because a
portion of the kernel code won't be covered by a 2MB TLB anymore.
If in doubt, say "N".
config 4KSTACKS
bool "Use 4Kb for kernel stacks instead of 8Kb"
depends on DEBUG_KERNEL

2
arch/i386/kernel/apic.c
View File

@ -721,7 +721,7 @@ static int __init apic_set_verbosity(char *str)
apic_verbosity = APIC_VERBOSE;
else
printk(KERN_WARNING "APIC Verbosity level %s not recognised"
" use apic=verbose or apic=debug", str);
" use apic=verbose or apic=debug\n", str);
return 0;
}

97
arch/i386/kernel/apm.c
View File

@ -302,17 +302,6 @@ extern int (*console_blank_hook)(int);
#include "apm.h"
/*
* Define to make all _set_limit calls use 64k limits. The APM 1.1 BIOS is
* supposed to provide limit information that it recognizes. Many machines
* do this correctly, but many others do not restrict themselves to their
* claimed limit. When this happens, they will cause a segmentation
* violation in the kernel at boot time. Most BIOS's, however, will
* respect a 64k limit, so we use that. If you want to be pedantic and
* hold your BIOS to its claims, then undefine this.
*/
#define APM_RELAX_SEGMENTS
/*
* Define to re-initialize the interrupt 0 timer to 100 Hz after a suspend.
* This patched by Chad Miller <cmiller@surfsouth.com>, original code by
@ -1075,22 +1064,23 @@ static int apm_engage_power_management(u_short device, int enable)
static int apm_console_blank(int blank)
{
int error;
u_short state;
int error, i;
u_short state;
static const u_short dev[3] = { 0x100, 0x1FF, 0x101 };
state = blank ? APM_STATE_STANDBY : APM_STATE_READY;
/* Blank the first display device */
error = set_power_state(0x100, state);
if ((error != APM_SUCCESS) && (error != APM_NO_ERROR)) {
/* try to blank them all instead */
error = set_power_state(0x1ff, state);
if ((error != APM_SUCCESS) && (error != APM_NO_ERROR))
/* try to blank device one instead */
error = set_power_state(0x101, state);
for (i = 0; i < ARRAY_SIZE(dev); i++) {
error = set_power_state(dev[i], state);
if ((error == APM_SUCCESS) || (error == APM_NO_ERROR))
return 1;
if (error == APM_NOT_ENGAGED)
break;
}
if ((error == APM_SUCCESS) || (error == APM_NO_ERROR))
return 1;
if (error == APM_NOT_ENGAGED) {
if (error == APM_NOT_ENGAGED && state != APM_STATE_READY) {
static int tried;
int eng_error;
if (tried++ == 0) {
@ -2233,8 +2223,8 @@ static struct dmi_system_id __initdata apm_dmi_table[] = {
static int __init apm_init(void)
{
struct proc_dir_entry *apm_proc;
struct desc_struct *gdt;
int ret;
int i;
dmi_check_system(apm_dmi_table);
@ -2312,45 +2302,30 @@ static int __init apm_init(void)
set_base(bad_bios_desc, __va((unsigned long)0x40 << 4));
_set_limit((char *)&bad_bios_desc, 4095 - (0x40 << 4));
/*
* Set up the long jump entry point to the APM BIOS, which is called
* from inline assembly.
*/
apm_bios_entry.offset = apm_info.bios.offset;
apm_bios_entry.segment = APM_CS;
for (i = 0; i < NR_CPUS; i++) {
struct desc_struct *gdt = get_cpu_gdt_table(i);
set_base(gdt[APM_CS >> 3],
__va((unsigned long)apm_info.bios.cseg << 4));
set_base(gdt[APM_CS_16 >> 3],
__va((unsigned long)apm_info.bios.cseg_16 << 4));
set_base(gdt[APM_DS >> 3],
__va((unsigned long)apm_info.bios.dseg << 4));
#ifndef APM_RELAX_SEGMENTS
if (apm_info.bios.version == 0x100) {
#endif
/* For ASUS motherboard, Award BIOS rev 110 (and others?) */
_set_limit((char *)&gdt[APM_CS >> 3], 64 * 1024 - 1);
/* For some unknown machine. */
_set_limit((char *)&gdt[APM_CS_16 >> 3], 64 * 1024 - 1);
/* For the DEC Hinote Ultra CT475 (and others?) */
_set_limit((char *)&gdt[APM_DS >> 3], 64 * 1024 - 1);
#ifndef APM_RELAX_SEGMENTS
} else {
_set_limit((char *)&gdt[APM_CS >> 3],
(apm_info.bios.cseg_len - 1) & 0xffff);
_set_limit((char *)&gdt[APM_CS_16 >> 3],
(apm_info.bios.cseg_16_len - 1) & 0xffff);
_set_limit((char *)&gdt[APM_DS >> 3],
(apm_info.bios.dseg_len - 1) & 0xffff);
/* workaround for broken BIOSes */
if (apm_info.bios.cseg_len <= apm_info.bios.offset)
_set_limit((char *)&gdt[APM_CS >> 3], 64 * 1024 -1);
if (apm_info.bios.dseg_len <= 0x40) { /* 0x40 * 4kB == 64kB */
/* for the BIOS that assumes granularity = 1 */
gdt[APM_DS >> 3].b |= 0x800000;
printk(KERN_NOTICE "apm: we set the granularity of dseg.\n");
}
}
#endif
}
/*
* The APM 1.1 BIOS is supposed to provide limit information that it
* recognizes. Many machines do this correctly, but many others do
* not restrict themselves to their claimed limit. When this happens,
* they will cause a segmentation violation in the kernel at boot time.
* Most BIOS's, however, will respect a 64k limit, so we use that.
*
* Note we only set APM segments on CPU zero, since we pin the APM
* code to that CPU.
*/
gdt = get_cpu_gdt_table(0);
set_base(gdt[APM_CS >> 3],
__va((unsigned long)apm_info.bios.cseg << 4));
set_base(gdt[APM_CS_16 >> 3],
__va((unsigned long)apm_info.bios.cseg_16 << 4));
set_base(gdt[APM_DS >> 3],
__va((unsigned long)apm_info.bios.dseg << 4));
apm_proc = create_proc_info_entry("apm", 0, NULL, apm_get_info);
if (apm_proc)

7
arch/i386/kernel/cpu/amd.c
View File

@ -161,8 +161,13 @@ static void __init init_amd(struct cpuinfo_x86 *c)
set_bit(X86_FEATURE_K6_MTRR, c->x86_capability);
break;
}
break;
if (c->x86_model == 10) {
/* AMD Geode LX is model 10 */
/* placeholder for any needed mods */
break;
}
break;
case 6: /* An Athlon/Duron */
/* Bit 15 of Athlon specific MSR 15, needs to be 0

8
arch/i386/kernel/cpu/common.c
View File

@ -18,9 +18,6 @@
#include "cpu.h"
DEFINE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
EXPORT_PER_CPU_SYMBOL(cpu_gdt_table);
DEFINE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
EXPORT_PER_CPU_SYMBOL(cpu_16bit_stack);
@ -598,11 +595,6 @@ void __devinit cpu_init(void)
load_gdt(&cpu_gdt_descr[cpu]);
load_idt(&idt_descr);
/*
* Delete NT
*/
__asm__("pushfl ; andl $0xffffbfff,(%esp) ; popfl");
/*
* Set up and load the per-CPU TSS and LDT
*/

3
arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
View File

@ -177,9 +177,10 @@ static unsigned int nforce2_fsb_read(int bootfsb)
*/
static int nforce2_set_fsb(unsigned int fsb)
{
u32 pll, temp = 0;
u32 temp = 0;
unsigned int tfsb;
int diff;
int pll = 0;
if ((fsb > max_fsb) || (fsb < NFORCE2_MIN_FSB)) {
printk(KERN_ERR "cpufreq: FSB %d is out of range!\n", fsb);

50
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
View File

@ -45,7 +45,7 @@
#define PFX "powernow-k8: "
#define BFX PFX "BIOS error: "
#define VERSION "version 1.50.4"
#define VERSION "version 1.60.0"
#include "powernow-k8.h"
/* serialize freq changes */
@ -216,10 +216,10 @@ static int write_new_vid(struct powernow_k8_data *data, u32 vid)
do {
wrmsr(MSR_FIDVID_CTL, lo, STOP_GRANT_5NS);
if (i++ > 100) {
printk(KERN_ERR PFX "internal error - pending bit very stuck - no further pstate changes possible\n");
return 1;
}
if (i++ > 100) {
printk(KERN_ERR PFX "internal error - pending bit very stuck - no further pstate changes possible\n");
return 1;
}
} while (query_current_values_with_pending_wait(data));
if (savefid != data->currfid) {
@ -336,7 +336,7 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data, u32 reqvid
/* Phase 2 - core frequency transition */
static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid)
{
u32 vcoreqfid, vcocurrfid, vcofiddiff, savevid = data->currvid;
u32 vcoreqfid, vcocurrfid, vcofiddiff, fid_interval, savevid = data->currvid;
if ((reqfid < HI_FID_TABLE_BOTTOM) && (data->currfid < HI_FID_TABLE_BOTTOM)) {
printk(KERN_ERR PFX "ph2: illegal lo-lo transition 0x%x 0x%x\n",
@ -359,9 +359,11 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid)
: vcoreqfid - vcocurrfid;
while (vcofiddiff > 2) {
(data->currfid & 1) ? (fid_interval = 1) : (fid_interval = 2);
if (reqfid > data->currfid) {
if (data->currfid > LO_FID_TABLE_TOP) {
if (write_new_fid(data, data->currfid + 2)) {
if (write_new_fid(data, data->currfid + fid_interval)) {
return 1;
}
} else {
@ -371,7 +373,7 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid)
}
}
} else {
if (write_new_fid(data, data->currfid - 2))
if (write_new_fid(data, data->currfid - fid_interval))
return 1;
}
@ -464,7 +466,7 @@ static int check_supported_cpu(unsigned int cpu)
set_cpus_allowed(current, cpumask_of_cpu(cpu));
if (smp_processor_id() != cpu) {
printk(KERN_ERR "limiting to cpu %u failed\n", cpu);
printk(KERN_ERR PFX "limiting to cpu %u failed\n", cpu);
goto out;
}
@ -474,7 +476,7 @@ static int check_supported_cpu(unsigned int cpu)
eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) ||
((eax & CPUID_XFAM) != CPUID_XFAM_K8) ||
((eax & CPUID_XMOD) > CPUID_XMOD_REV_F)) {
((eax & CPUID_XMOD) > CPUID_XMOD_REV_G)) {
printk(KERN_INFO PFX "Processor cpuid %x not supported\n", eax);
goto out;
}
@ -517,22 +519,24 @@ static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst, u8
printk(KERN_ERR BFX "maxvid exceeded with pstate %d\n", j);
return -ENODEV;
}
if ((pst[j].fid > MAX_FID)
|| (pst[j].fid & 1)
|| (j && (pst[j].fid < HI_FID_TABLE_BOTTOM))) {
if (pst[j].fid > MAX_FID) {
printk(KERN_ERR BFX "maxfid exceeded with pstate %d\n", j);
return -ENODEV;
}
if (j && (pst[j].fid < HI_FID_TABLE_BOTTOM)) {
/* Only first fid is allowed to be in "low" range */
printk(KERN_ERR PFX "two low fids - %d : 0x%x\n", j, pst[j].fid);
printk(KERN_ERR BFX "two low fids - %d : 0x%x\n", j, pst[j].fid);
return -EINVAL;
}
if (pst[j].fid < lastfid)
lastfid = pst[j].fid;
}
if (lastfid & 1) {
printk(KERN_ERR PFX "lastfid invalid\n");
printk(KERN_ERR BFX "lastfid invalid\n");
return -EINVAL;
}
if (lastfid > LO_FID_TABLE_TOP)
printk(KERN_INFO PFX "first fid not from lo freq table\n");
printk(KERN_INFO BFX "first fid not from lo freq table\n");
return 0;
}
@ -631,7 +635,7 @@ static int find_psb_table(struct powernow_k8_data *data)
dprintk("table vers: 0x%x\n", psb->tableversion);
if (psb->tableversion != PSB_VERSION_1_4) {
printk(KERN_INFO BFX "PSB table is not v1.4\n");
printk(KERN_ERR BFX "PSB table is not v1.4\n");
return -ENODEV;
}
@ -689,7 +693,7 @@ static int find_psb_table(struct powernow_k8_data *data)
* BIOS and Kernel Developer's Guide, which is available on
* www.amd.com
*/
printk(KERN_INFO PFX "BIOS error - no PSB or ACPI _PSS objects\n");
printk(KERN_ERR PFX "BIOS error - no PSB or ACPI _PSS objects\n");
return -ENODEV;
}
@ -912,7 +916,7 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
set_cpus_allowed(current, cpumask_of_cpu(pol->cpu));
if (smp_processor_id() != pol->cpu) {
printk(KERN_ERR "limiting to cpu %u failed\n", pol->cpu);
printk(KERN_ERR PFX "limiting to cpu %u failed\n", pol->cpu);
goto err_out;
}
@ -982,6 +986,9 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
cpumask_t oldmask = CPU_MASK_ALL;
int rc, i;
if (!cpu_online(pol->cpu))
return -ENODEV;
if (!check_supported_cpu(pol->cpu))
return -ENODEV;
@ -1021,7 +1028,7 @@ static int __init powernowk8_cpu_init(struct cpufreq_policy *pol)
set_cpus_allowed(current, cpumask_of_cpu(pol->cpu));
if (smp_processor_id() != pol->cpu) {
printk(KERN_ERR "limiting to cpu %u failed\n", pol->cpu);
printk(KERN_ERR PFX "limiting to cpu %u failed\n", pol->cpu);
goto err_out;
}
@ -1162,10 +1169,9 @@ static void __exit powernowk8_exit(void)
cpufreq_unregister_driver(&cpufreq_amd64_driver);
}
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com.");
MODULE_AUTHOR("Paul Devriendt <paul.devriendt@amd.com> and Mark Langsdorf <mark.langsdorf@amd.com>");
MODULE_DESCRIPTION("AMD Athlon 64 and Opteron processor frequency driver.");
MODULE_LICENSE("GPL");
late_initcall(powernowk8_init);
module_exit(powernowk8_exit);

9
arch/i386/kernel/cpu/cpufreq/powernow-k8.h
View File

@ -42,7 +42,7 @@ struct powernow_k8_data {
#define CPUID_XFAM 0x0ff00000 /* extended family */
#define CPUID_XFAM_K8 0
#define CPUID_XMOD 0x000f0000 /* extended model */
#define CPUID_XMOD_REV_F 0x00040000
#define CPUID_XMOD_REV_G 0x00060000
#define CPUID_USE_XFAM_XMOD 0x00000f00
#define CPUID_GET_MAX_CAPABILITIES 0x80000000
#define CPUID_FREQ_VOLT_CAPABILITIES 0x80000007
@ -86,13 +86,14 @@ struct powernow_k8_data {
* low fid table
* - lowest entry in the high fid table must be a <= 200MHz + 2 * the entry
* in the low fid table
* - the parts can only step at 200 MHz intervals, so 1.9 GHz is never valid
* - the parts can only step at <= 200 MHz intervals, odd fid values are
* supported in revision G and later revisions.
* - lowest frequency must be >= interprocessor hypertransport link speed
* (only applies to MP systems obviously)
*/
/* fids (frequency identifiers) are arranged in 2 tables - lo and hi */
#define LO_FID_TABLE_TOP 6 /* fid values marking the boundary */
#define LO_FID_TABLE_TOP 7 /* fid values marking the boundary */
#define HI_FID_TABLE_BOTTOM 8 /* between the low and high tables */
#define LO_VCOFREQ_TABLE_TOP 1400 /* corresponding vco frequency values */
@ -106,7 +107,7 @@ struct powernow_k8_data {
#define MIN_FREQ 800 /* Min and max freqs, per spec */
#define MAX_FREQ 5000
#define INVALID_FID_MASK 0xffffffc1 /* not a valid fid if these bits are set */
#define INVALID_FID_MASK 0xffffffc0 /* not a valid fid if these bits are set */
#define INVALID_VID_MASK 0xffffffc0 /* not a valid vid if these bits are set */
#define VID_OFF 0x3f

51
arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
View File

@ -40,6 +40,7 @@ static struct pci_dev *speedstep_chipset_dev;
*/
static unsigned int speedstep_processor = 0;
static u32 pmbase;
/*
* There are only two frequency states for each processor. Values
@ -55,6 +56,33 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_DRIVER, "speedstep-ich", msg)
/**
* speedstep_find_register - read the PMBASE address
*
* Returns: -ENODEV if no register could be found
*/
static int speedstep_find_register (void)
{
if (!speedstep_chipset_dev)
return -ENODEV;
/* get PMBASE */
pci_read_config_dword(speedstep_chipset_dev, 0x40, &pmbase);
if (!(pmbase & 0x01)) {
printk(KERN_ERR "speedstep-ich: could not find speedstep register\n");
return -ENODEV;
}
pmbase &= 0xFFFFFFFE;
if (!pmbase) {
printk(KERN_ERR "speedstep-ich: could not find speedstep register\n");
return -ENODEV;
}
dprintk("pmbase is 0x%x\n", pmbase);
return 0;
}
/**
* speedstep_set_state - set the SpeedStep state
* @state: new processor frequency state (SPEEDSTEP_LOW or SPEEDSTEP_HIGH)
@ -63,27 +91,13 @@ static struct cpufreq_frequency_table speedstep_freqs[] = {
*/
static void speedstep_set_state (unsigned int state)
{
u32 pmbase;
u8 pm2_blk;
u8 value;
unsigned long flags;
if (!speedstep_chipset_dev || (state > 0x1))
if (state > 0x1)
return;
/* get PMBASE */
pci_read_config_dword(speedstep_chipset_dev, 0x40, &pmbase);
if (!(pmbase & 0x01)) {
printk(KERN_ERR "speedstep-ich: could not find speedstep register\n");
return;
}
pmbase &= 0xFFFFFFFE;
if (!pmbase) {
printk(KERN_ERR "speedstep-ich: could not find speedstep register\n");
return;
}
/* Disable IRQs */
local_irq_save(flags);
@ -315,10 +329,11 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
cpus_allowed = current->cpus_allowed;
set_cpus_allowed(current, policy->cpus);
/* detect low and high frequency */
/* detect low and high frequency and transition latency */
result = speedstep_get_freqs(speedstep_processor,
&speedstep_freqs[SPEEDSTEP_LOW].frequency,
&speedstep_freqs[SPEEDSTEP_HIGH].frequency,
&policy->cpuinfo.transition_latency,
&speedstep_set_state);
set_cpus_allowed(current, cpus_allowed);
if (result)
@ -335,7 +350,6 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
/* cpuinfo and default policy values */
policy->governor = CPUFREQ_DEFAULT_GOVERNOR;
policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
policy->cur = speed;
result = cpufreq_frequency_table_cpuinfo(policy, speedstep_freqs);
@ -400,6 +414,9 @@ static int __init speedstep_init(void)
return -EINVAL;
}
if (speedstep_find_register())
return -ENODEV;
return cpufreq_register_driver(&speedstep_driver);
}

32
arch/i386/kernel/cpu/cpufreq/speedstep-lib.c
View File

@ -320,11 +320,13 @@ EXPORT_SYMBOL_GPL(speedstep_detect_processor);
unsigned int speedstep_get_freqs(unsigned int processor,
unsigned int *low_speed,
unsigned int *high_speed,
unsigned int *transition_latency,
void (*set_state) (unsigned int state))
{
unsigned int prev_speed;
unsigned int ret = 0;
unsigned long flags;
struct timeval tv1, tv2;
if ((!processor) || (!low_speed) || (!high_speed) || (!set_state))
return -EINVAL;
@ -337,7 +339,7 @@ unsigned int speedstep_get_freqs(unsigned int processor,
return -EIO;
dprintk("previous speed is %u\n", prev_speed);
local_irq_save(flags);
/* switch to low state */
@ -350,8 +352,17 @@ unsigned int speedstep_get_freqs(unsigned int processor,
dprintk("low speed is %u\n", *low_speed);
/* start latency measurement */
if (transition_latency)
do_gettimeofday(&tv1);
/* switch to high state */
set_state(SPEEDSTEP_HIGH);
/* end latency measurement */
if (transition_latency)
do_gettimeofday(&tv2);
*high_speed = speedstep_get_processor_frequency(processor);
if (!*high_speed) {
ret = -EIO;
@ -369,6 +380,25 @@ unsigned int speedstep_get_freqs(unsigned int processor,
if (*high_speed != prev_speed)
set_state(SPEEDSTEP_LOW);
if (transition_latency) {
*transition_latency = (tv2.tv_sec - tv1.tv_sec) * USEC_PER_SEC +
tv2.tv_usec - tv1.tv_usec;
dprintk("transition latency is %u uSec\n", *transition_latency);
/* convert uSec to nSec and add 20% for safety reasons */
*transition_latency *= 1200;
/* check if the latency measurement is too high or too low
* and set it to a safe value (500uSec) in that case
*/
if (*transition_latency > 10000000 || *transition_latency < 50000) {
printk (KERN_WARNING "speedstep: frequency transition measured seems out of "
"range (%u nSec), falling back to a safe one of %u nSec.\n",
*transition_latency, 500000);
*transition_latency = 500000;
}
}
out:
local_irq_restore(flags);
return (ret);

1
arch/i386/kernel/cpu/cpufreq/speedstep-lib.h
View File

@ -44,4 +44,5 @@ extern unsigned int speedstep_get_processor_frequency(unsigned int processor);
extern unsigned int speedstep_get_freqs(unsigned int processor,
unsigned int *low_speed,
unsigned int *high_speed,
unsigned int *transition_latency,
void (*set_state) (unsigned int state));

1
arch/i386/kernel/cpu/cpufreq/speedstep-smi.c
View File

@ -269,6 +269,7 @@ static int speedstep_cpu_init(struct cpufreq_policy *policy)
result = speedstep_get_freqs(speedstep_processor,
&speedstep_freqs[SPEEDSTEP_LOW].frequency,
&speedstep_freqs[SPEEDSTEP_HIGH].frequency,
NULL,
&speedstep_set_state);
if (result) {

27
arch/i386/kernel/cpu/cyrix.c
View File

@ -342,6 +342,31 @@ static void __init init_cyrix(struct cpuinfo_x86 *c)
return;
}
/*
* Handle National Semiconductor branded processors
*/
static void __devinit init_nsc(struct cpuinfo_x86 *c)
{
/* There may be GX1 processors in the wild that are branded
* NSC and not Cyrix.
*
* This function only handles the GX processor, and kicks every
* thing else to the Cyrix init function above - that should
* cover any processors that might have been branded differently
* after NSC aquired Cyrix.
*
* If this breaks your GX1 horribly, please e-mail
* info-linux@ldcmail.amd.com to tell us.
*/
/* Handle the GX (Formally known as the GX2) */
if (c->x86 == 5 && c->x86_model == 5)
display_cacheinfo(c);
else
init_cyrix(c);
}
/*
* Cyrix CPUs without cpuid or with cpuid not yet enabled can be detected
* by the fact that they preserve the flags across the division of 5/2.
@ -422,7 +447,7 @@ int __init cyrix_init_cpu(void)
static struct cpu_dev nsc_cpu_dev __initdata = {
.c_vendor = "NSC",
.c_ident = { "Geode by NSC" },
.c_init = init_cyrix,
.c_init = init_nsc,
.c_identify = generic_identify,
};

6
arch/i386/kernel/cpu/proc.c
View File

@ -3,6 +3,7 @@
#include <linux/string.h>
#include <asm/semaphore.h>
#include <linux/seq_file.h>
#include <linux/cpufreq.h>
/*
* Get CPU information for use by the procfs.
@ -86,8 +87,11 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, "stepping\t: unknown\n");
if ( cpu_has(c, X86_FEATURE_TSC) ) {
unsigned int freq = cpufreq_quick_get(n);
if (!freq)
freq = cpu_khz;
seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
cpu_khz / 1000, (cpu_khz % 1000));
freq / 1000, (freq % 1000));
}
/* Cache size */

3
arch/i386/kernel/cpuid.c
View File

@ -117,14 +117,13 @@ static ssize_t cpuid_read(struct file *file, char __user *buf,
{
char __user *tmp = buf;
u32 data[4];
size_t rv;
u32 reg = *ppos;
int cpu = iminor(file->f_dentry->d_inode);
if (count % 16)
return -EINVAL; /* Invalid chunk size */
for (rv = 0; count; count -= 16) {
for (; count; count -= 16) {
do_cpuid(cpu, reg, data);
if (copy_to_user(tmp, &data, 16))
return -EFAULT;

1
arch/i386/kernel/entry.S
View File

@ -657,6 +657,7 @@ ENTRY(spurious_interrupt_bug)
pushl $do_spurious_interrupt_bug
jmp error_code
.section .rodata,"a"
#include "syscall_table.S"
syscall_table_size=(.-sys_call_table)

27
arch/i386/kernel/head.S
View File

@ -504,19 +504,24 @@ ENTRY(cpu_gdt_table)
.quad 0x0000000000000000 /* 0x80 TSS descriptor */
.quad 0x0000000000000000 /* 0x88 LDT descriptor */
/* Segments used for calling PnP BIOS */
.quad 0x00c09a0000000000 /* 0x90 32-bit code */
.quad 0x00809a0000000000 /* 0x98 16-bit code */
.quad 0x0080920000000000 /* 0xa0 16-bit data */
.quad 0x0080920000000000 /* 0xa8 16-bit data */
.quad 0x0080920000000000 /* 0xb0 16-bit data */
/*
* Segments used for calling PnP BIOS have byte granularity.
* They code segments and data segments have fixed 64k limits,
* the transfer segment sizes are set at run time.
*/
.quad 0x00409a000000ffff /* 0x90 32-bit code */
.quad 0x00009a000000ffff /* 0x98 16-bit code */
.quad 0x000092000000ffff /* 0xa0 16-bit data */
.quad 0x0000920000000000 /* 0xa8 16-bit data */
.quad 0x0000920000000000 /* 0xb0 16-bit data */
/*
* The APM segments have byte granularity and their bases
* and limits are set at run time.
* are set at run time. All have 64k limits.
*/
.quad 0x00409a0000000000 /* 0xb8 APM CS code */
.quad 0x00009a0000000000 /* 0xc0 APM CS 16 code (16 bit) */
.quad 0x0040920000000000 /* 0xc8 APM DS data */
.quad 0x00409a000000ffff /* 0xb8 APM CS code */
.quad 0x00009a000000ffff /* 0xc0 APM CS 16 code (16 bit) */
.quad 0x004092000000ffff /* 0xc8 APM DS data */
.quad 0x0000920000000000 /* 0xd0 - ESPFIX 16-bit SS */
.quad 0x0000000000000000 /* 0xd8 - unused */
@ -525,3 +530,5 @@ ENTRY(cpu_gdt_table)
.quad 0x0000000000000000 /* 0xf0 - unused */
.quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */
/* Be sure this is zeroed to avoid false validations in Xen */
.fill PAGE_SIZE_asm / 8 - GDT_ENTRIES,8,0

3
arch/i386/kernel/i386_ksyms.c
View File

@ -3,8 +3,7 @@
#include <asm/checksum.h>
#include <asm/desc.h>
/* This is definitely a GPL-only symbol */
EXPORT_SYMBOL_GPL(cpu_gdt_table);
EXPORT_SYMBOL_GPL(cpu_gdt_descr);
EXPORT_SYMBOL(__down_failed);
EXPORT_SYMBOL(__down_failed_interruptible);

4
arch/i386/kernel/io_apic.c
View File

@ -1722,8 +1722,8 @@ void disable_IO_APIC(void)
entry.dest_mode = 0; /* Physical */
entry.delivery_mode = dest_ExtINT; /* ExtInt */
entry.vector = 0;
entry.dest.physical.physical_dest = 0;
entry.dest.physical.physical_dest =
GET_APIC_ID(apic_read(APIC_ID));
/*
* Add it to the IO-APIC irq-routing table:

2
arch/i386/kernel/kprobes.c
View File

@ -191,7 +191,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
*/
save_previous_kprobe(kcb);
set_current_kprobe(p, regs, kcb);
p->nmissed++;
kprobes_inc_nmissed_count(p);
prepare_singlestep(p, regs);
kcb->kprobe_status = KPROBE_REENTER;
return 1;

26
arch/i386/kernel/mpparse.c
View File

@ -38,6 +38,12 @@
int smp_found_config;
unsigned int __initdata maxcpus = NR_CPUS;
#ifdef CONFIG_HOTPLUG_CPU
#define CPU_HOTPLUG_ENABLED (1)
#else
#define CPU_HOTPLUG_ENABLED (0)
#endif
/*
* Various Linux-internal data structures created from the
* MP-table.
@ -219,14 +225,18 @@ static void __devinit MP_processor_info (struct mpc_config_processor *m)
cpu_set(num_processors, cpu_possible_map);
num_processors++;
if ((num_processors > 8) &&
((APIC_XAPIC(ver) &&
(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)) ||
(boot_cpu_data.x86_vendor == X86_VENDOR_AMD)))
def_to_bigsmp = 1;
else
def_to_bigsmp = 0;
if (CPU_HOTPLUG_ENABLED || (num_processors > 8)) {
switch (boot_cpu_data.x86_vendor) {
case X86_VENDOR_INTEL:
if (!APIC_XAPIC(ver)) {
def_to_bigsmp = 0;
break;
}
/* If P4 and above fall through */
case X86_VENDOR_AMD:
def_to_bigsmp = 1;
}
}
bios_cpu_apicid[num_processors - 1] = m->mpc_apicid;
}

3
arch/i386/kernel/msr.c
View File

@ -172,7 +172,6 @@ static ssize_t msr_read(struct file *file, char __user * buf,
{
u32 __user *tmp = (u32 __user *) buf;
u32 data[2];
size_t rv;
u32 reg = *ppos;
int cpu = iminor(file->f_dentry->d_inode);
int err;
@ -180,7 +179,7 @@ static ssize_t msr_read(struct file *file, char __user * buf,
if (count % 8)
return -EINVAL; /* Invalid chunk size */
for (rv = 0; count; count -= 8) {
for (; count; count -= 8) {
err = do_rdmsr(cpu, reg, &data[0], &data[1]);
if (err)
return err;

20
arch/i386/kernel/process.c
View File

@ -308,9 +308,7 @@ void show_regs(struct pt_regs * regs)
cr0 = read_cr0();
cr2 = read_cr2();
cr3 = read_cr3();
if (current_cpu_data.x86 > 4) {
cr4 = read_cr4();
}
cr4 = read_cr4_safe();
printk("CR0: %08lx CR2: %08lx CR3: %08lx CR4: %08lx\n", cr0, cr2, cr3, cr4);
show_trace(NULL, &regs->esp);
}
@ -404,17 +402,7 @@ void flush_thread(void)
void release_thread(struct task_struct *dead_task)
{
if (dead_task->mm) {
// temporary debugging check
if (dead_task->mm->context.size) {
printk("WARNING: dead process %8s still has LDT? <%p/%d>\n",
dead_task->comm,
dead_task->mm->context.ldt,
dead_task->mm->context.size);
BUG();
}
}
BUG_ON(dead_task->mm);
release_vm86_irqs(dead_task);
}
@ -554,7 +542,9 @@ int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
struct pt_regs ptregs;
ptregs = *(struct pt_regs *)
((unsigned long)tsk->thread_info+THREAD_SIZE - sizeof(ptregs));
((unsigned long)tsk->thread_info +
/* see comments in copy_thread() about -8 */
THREAD_SIZE - sizeof(ptregs) - 8);
ptregs.xcs &= 0xffff;
ptregs.xds &= 0xffff;
ptregs.xes &= 0xffff;

9
arch/i386/kernel/ptrace.c
View File

@ -32,9 +32,12 @@
* in exit.c or in signal.c.
*/
/* determines which flags the user has access to. */
/* 1 = access 0 = no access */
#define FLAG_MASK 0x00044dd5
/*
* Determines which flags the user has access to [1 = access, 0 = no access].
* Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9).
* Also masks reserved bits (31-22, 15, 5, 3, 1).
*/
#define FLAG_MASK 0x00054dd5
/* set's the trap flag. */
#define TRAP_FLAG 0x100

6
arch/i386/kernel/reboot.c
View File

@ -111,12 +111,12 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2400"),
},
},
{ /* Handle problems with rebooting on HP nc6120 */
{ /* Handle problems with rebooting on HP laptops */
.callback = set_bios_reboot,
.ident = "HP Compaq nc6120",
.ident = "HP Compaq Laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6120"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq"),
},
},
{ }

8
arch/i386/kernel/setup.c
View File

@ -954,6 +954,12 @@ efi_find_max_pfn(unsigned long start, unsigned long end, void *arg)
return 0;
}
static int __init
efi_memory_present_wrapper(unsigned long start, unsigned long end, void *arg)
{
memory_present(0, start, end);
return 0;
}
/*
* Find the highest page frame number we have available
@ -965,6 +971,7 @@ void __init find_max_pfn(void)
max_pfn = 0;
if (efi_enabled) {
efi_memmap_walk(efi_find_max_pfn, &max_pfn);
efi_memmap_walk(efi_memory_present_wrapper, NULL);
return;
}
@ -979,6 +986,7 @@ void __init find_max_pfn(void)
continue;
if (end > max_pfn)
max_pfn = end;
memory_present(0, start, end);
}
}

9
arch/i386/kernel/smpboot.c
View File

@ -903,6 +903,12 @@ static int __devinit do_boot_cpu(int apicid, int cpu)
unsigned long start_eip;
unsigned short nmi_high = 0, nmi_low = 0;
if (!cpu_gdt_descr[cpu].address &&
!(cpu_gdt_descr[cpu].address = get_zeroed_page(GFP_KERNEL))) {
printk("Failed to allocate GDT for CPU %d\n", cpu);
return 1;
}
++cpucount;
/*
@ -1338,8 +1344,7 @@ int __cpu_disable(void)
if (cpu == 0)
return -EBUSY;
/* We enable the timer again on the exit path of the death loop */
disable_APIC_timer();
clear_local_APIC();
/* Allow any queued timer interrupts to get serviced */
local_irq_enable();
mdelay(1);

1
arch/i386/kernel/syscall_table.S
View File

@ -1,4 +1,3 @@
.data
ENTRY(sys_call_table)
.long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
.long sys_exit

2
arch/i386/kernel/timers/timer_tsc.c
View File

@ -330,7 +330,9 @@ int recalibrate_cpu_khz(void)
unsigned int cpu_khz_old = cpu_khz;
if (cpu_has_tsc) {
local_irq_disable();
init_cpu_khz();
local_irq_enable();
cpu_data[0].loops_per_jiffy =
cpufreq_scale(cpu_data[0].loops_per_jiffy,
cpu_khz_old,

42
arch/i386/kernel/traps.c
View File

@ -306,14 +306,17 @@ void die(const char * str, struct pt_regs * regs, long err)
.lock_owner_depth = 0
};
static int die_counter;
unsigned long flags;
if (die.lock_owner != raw_smp_processor_id()) {
console_verbose();
spin_lock_irq(&die.lock);
spin_lock_irqsave(&die.lock, flags);
die.lock_owner = smp_processor_id();
die.lock_owner_depth = 0;
bust_spinlocks(1);
}
else
local_save_flags(flags);
if (++die.lock_owner_depth < 3) {
int nl = 0;
@ -340,7 +343,7 @@ void die(const char * str, struct pt_regs * regs, long err)
bust_spinlocks(0);
die.lock_owner = -1;
spin_unlock_irq(&die.lock);
spin_unlock_irqrestore(&die.lock, flags);
if (kexec_should_crash(current))
crash_kexec(regs);
@ -452,7 +455,7 @@ DO_VM86_ERROR( 3, SIGTRAP, "int3", int3)
#endif
DO_VM86_ERROR( 4, SIGSEGV, "overflow", overflow)
DO_VM86_ERROR( 5, SIGSEGV, "bounds", bounds)
DO_ERROR_INFO( 6, SIGILL, "invalid operand", invalid_op, ILL_ILLOPN, regs->eip)
DO_ERROR_INFO( 6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->eip)
DO_ERROR( 9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)
DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
DO_ERROR(11, SIGBUS, "segment not present", segment_not_present)
@ -650,13 +653,6 @@ fastcall void do_nmi(struct pt_regs * regs, long error_code)
cpu = smp_processor_id();
#ifdef CONFIG_HOTPLUG_CPU
if (!cpu_online(cpu)) {
nmi_exit();
return;
}
#endif
++nmi_count(cpu);
if (!rcu_dereference(nmi_callback)(regs, cpu))
@ -1082,9 +1078,9 @@ void __init trap_init(void)
set_trap_gate(0,&divide_error);
set_intr_gate(1,&debug);
set_intr_gate(2,&nmi);
set_system_intr_gate(3, &int3); /* int3-5 can be called from all */
set_system_intr_gate(3, &int3); /* int3/4 can be called from all */
set_system_gate(4,&overflow);
set_system_gate(5,&bounds);
set_trap_gate(5,&bounds);
set_trap_gate(6,&invalid_op);
set_trap_gate(7,&device_not_available);
set_task_gate(8,GDT_ENTRY_DOUBLEFAULT_TSS);
@ -1102,6 +1098,28 @@ void __init trap_init(void)
#endif
set_trap_gate(19,&simd_coprocessor_error);
if (cpu_has_fxsr) {
/*
* Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
* Generates a compile-time "error: zero width for bit-field" if
* the alignment is wrong.
*/
struct fxsrAlignAssert {
int _:!(offsetof(struct task_struct,
thread.i387.fxsave) & 15);
};
printk(KERN_INFO "Enabling fast FPU save and restore... ");
set_in_cr4(X86_CR4_OSFXSR);
printk("done.\n");
}
if (cpu_has_xmm) {
printk(KERN_INFO "Enabling unmasked SIMD FPU exception "
"support... ");
set_in_cr4(X86_CR4_OSXMMEXCPT);
printk("done.\n");
}
set_system_gate(SYSCALL_VECTOR,&system_call);
/*

24
arch/i386/mm/init.c
View File

@ -735,6 +735,30 @@ void free_initmem(void)
printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", (__init_end - __init_begin) >> 10);
}
#ifdef CONFIG_DEBUG_RODATA
extern char __start_rodata, __end_rodata;
void mark_rodata_ro(void)
{
unsigned long addr = (unsigned long)&__start_rodata;
for (; addr < (unsigned long)&__end_rodata; addr += PAGE_SIZE)
change_page_attr(virt_to_page(addr), 1, PAGE_KERNEL_RO);
printk ("Write protecting the kernel read-only data: %luk\n",
(unsigned long)(&__end_rodata - &__start_rodata) >> 10);
/*
* change_page_attr() requires a global_flush_tlb() call after it.
* We do this after the printk so that if something went wrong in the
* change, the printk gets out at least to give a better debug hint
* of who is the culprit.
*/
global_flush_tlb();
}
#endif
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{

37
arch/i386/mm/ioremap.c
View File

@ -223,9 +223,15 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
}
EXPORT_SYMBOL(ioremap_nocache);
/**
* iounmap - Free a IO remapping
* @addr: virtual address from ioremap_*
*
* Caller must ensure there is only one unmapping for the same pointer.
*/
void iounmap(volatile void __iomem *addr)
{
struct vm_struct *p;
struct vm_struct *p, *o;
if ((void __force *)addr <= high_memory)
return;
@ -239,22 +245,37 @@ void iounmap(volatile void __iomem *addr)
addr < phys_to_virt(ISA_END_ADDRESS))
return;
write_lock(&vmlist_lock);
p = __remove_vm_area((void *)(PAGE_MASK & (unsigned long __force)addr));
if (!p) {
printk(KERN_WARNING "iounmap: bad address %p\n", addr);
addr = (volatile void __iomem *)(PAGE_MASK & (unsigned long __force)addr);
/* Use the vm area unlocked, assuming the caller
ensures there isn't another iounmap for the same address
in parallel. Reuse of the virtual address is prevented by
leaving it in the global lists until we're done with it.
cpa takes care of the direct mappings. */
read_lock(&vmlist_lock);
for (p = vmlist; p; p = p->next) {
if (p->addr == addr)
break;
}
read_unlock(&vmlist_lock);
if (!p) {
printk("iounmap: bad address %p\n", addr);
dump_stack();
goto out_unlock;
return;
}
/* Reset the direct mapping. Can block */
if ((p->flags >> 20) && p->phys_addr < virt_to_phys(high_memory) - 1) {
change_page_attr(virt_to_page(__va(p->phys_addr)),
p->size >> PAGE_SHIFT,
PAGE_KERNEL);
global_flush_tlb();
}
out_unlock:
write_unlock(&vmlist_lock);
/* Finally remove it */
o = remove_vm_area((void *)addr);
BUG_ON(p != o || o == NULL);
kfree(p);
}
EXPORT_SYMBOL(iounmap);

27
arch/i386/mm/pageattr.c
View File

@ -13,6 +13,7 @@
#include <asm/processor.h>
#include <asm/tlbflush.h>
#include <asm/pgalloc.h>
#include <asm/sections.h>
static DEFINE_SPINLOCK(cpa_lock);
static struct list_head df_list = LIST_HEAD_INIT(df_list);
@ -36,7 +37,8 @@ pte_t *lookup_address(unsigned long address)
return pte_offset_kernel(pmd, address);
}
static struct page *split_large_page(unsigned long address, pgprot_t prot)
static struct page *split_large_page(unsigned long address, pgprot_t prot,
pgprot_t ref_prot)
{
int i;
unsigned long addr;
@ -54,7 +56,7 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot)
pbase = (pte_t *)page_address(base);
for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE) {
set_pte(&pbase[i], pfn_pte(addr >> PAGE_SHIFT,
addr == address ? prot : PAGE_KERNEL));
addr == address ? prot : ref_prot));
}
return base;
}
@ -98,11 +100,18 @@ static void set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
*/
static inline void revert_page(struct page *kpte_page, unsigned long address)
{
pte_t *linear = (pte_t *)
pgprot_t ref_prot;
pte_t *linear;
ref_prot =
((address & LARGE_PAGE_MASK) < (unsigned long)&_etext)
? PAGE_KERNEL_LARGE_EXEC : PAGE_KERNEL_LARGE;
linear = (pte_t *)
pmd_offset(pud_offset(pgd_offset_k(address), address), address);
set_pmd_pte(linear, address,
pfn_pte((__pa(address) & LARGE_PAGE_MASK) >> PAGE_SHIFT,
PAGE_KERNEL_LARGE));
ref_prot));
}
static int
@ -123,10 +132,16 @@ __change_page_attr(struct page *page, pgprot_t prot)
if ((pte_val(*kpte) & _PAGE_PSE) == 0) {
set_pte_atomic(kpte, mk_pte(page, prot));
} else {
struct page *split = split_large_page(address, prot);
pgprot_t ref_prot;
struct page *split;
ref_prot =
((address & LARGE_PAGE_MASK) < (unsigned long)&_etext)
? PAGE_KERNEL_EXEC : PAGE_KERNEL;
split = split_large_page(address, prot, ref_prot);
if (!split)
return -ENOMEM;
set_pmd_pte(kpte,address,mk_pte(split, PAGE_KERNEL));
set_pmd_pte(kpte,address,mk_pte(split, ref_prot));
kpte_page = split;
}
get_page(kpte_page);

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