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Anton Altaparmakov 2005-06-25 14:27:27 +01:00
commit 38b22b6e9f
861 changed files with 59555 additions and 10351 deletions
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2
Documentation/Changes
View File

@ -63,7 +63,7 @@ o PPP 2.4.0 # pppd --version
o isdn4k-utils 3.1pre1 # isdnctrl 2>&1|grep version
o nfs-utils 1.0.5 # showmount --version
o procps 3.2.0 # ps --version
o oprofile 0.5.3 # oprofiled --version
o oprofile 0.9 # oprofiled --version
Kernel compilation
==================

2
Documentation/DocBook/Makefile
View File

@ -49,7 +49,7 @@ installmandocs: mandocs
KERNELDOC = scripts/kernel-doc
DOCPROC = scripts/basic/docproc
XMLTOFLAGS = -m Documentation/DocBook/stylesheet.xsl
XMLTOFLAGS = -m $(srctree)/Documentation/DocBook/stylesheet.xsl
#XMLTOFLAGS += --skip-validation
###

2
Documentation/DocBook/kernel-api.tmpl
View File

@ -266,7 +266,7 @@ X!Ekernel/module.c
<chapter id="hardware">
<title>Hardware Interfaces</title>
<sect1><title>Interrupt Handling</title>
!Iarch/i386/kernel/irq.c
!Ikernel/irq/manage.c
</sect1>
<sect1><title>Resources Management</title>

1
Documentation/DocBook/stylesheet.xsl
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@ -2,4 +2,5 @@
<stylesheet xmlns="http://www.w3.org/1999/XSL/Transform" version="1.0">
<param name="chunk.quietly">1</param>
<param name="funcsynopsis.style">ansi</param>
<param name="funcsynopsis.tabular.threshold">80</param>
</stylesheet>

144
Documentation/IPMI.txt
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@ -25,9 +25,10 @@ subject and I can't cover it all here!
Configuration
-------------
The LinuxIPMI driver is modular, which means you have to pick several
The Linux IPMI driver is modular, which means you have to pick several
things to have it work right depending on your hardware. Most of
these are available in the 'Character Devices' menu.
these are available in the 'Character Devices' menu then the IPMI
menu.
No matter what, you must pick 'IPMI top-level message handler' to use
IPMI. What you do beyond that depends on your needs and hardware.
@ -35,33 +36,30 @@ IPMI. What you do beyond that depends on your needs and hardware.
The message handler does not provide any user-level interfaces.
Kernel code (like the watchdog) can still use it. If you need access
from userland, you need to select 'Device interface for IPMI' if you
want access through a device driver. Another interface is also
available, you may select 'IPMI sockets' in the 'Networking Support'
main menu. This provides a socket interface to IPMI. You may select
both of these at the same time, they will both work together.
want access through a device driver.
The driver interface depends on your hardware. If you have a board
with a standard interface (These will generally be either "KCS",
"SMIC", or "BT", consult your hardware manual), choose the 'IPMI SI
handler' option. A driver also exists for direct I2C access to the
IPMI management controller. Some boards support this, but it is
unknown if it will work on every board. For this, choose 'IPMI SMBus
handler', but be ready to try to do some figuring to see if it will
work.
There is also a KCS-only driver interface supplied, but it is
depracated in favor of the SI interface.
The driver interface depends on your hardware. If your system
properly provides the SMBIOS info for IPMI, the driver will detect it
and just work. If you have a board with a standard interface (These
will generally be either "KCS", "SMIC", or "BT", consult your hardware
manual), choose the 'IPMI SI handler' option. A driver also exists
for direct I2C access to the IPMI management controller. Some boards
support this, but it is unknown if it will work on every board. For
this, choose 'IPMI SMBus handler', but be ready to try to do some
figuring to see if it will work on your system if the SMBIOS/APCI
information is wrong or not present. It is fairly safe to have both
these enabled and let the drivers auto-detect what is present.
You should generally enable ACPI on your system, as systems with IPMI
should have ACPI tables describing them.
can have ACPI tables describing them.
If you have a standard interface and the board manufacturer has done
their job correctly, the IPMI controller should be automatically
detect (via ACPI or SMBIOS tables) and should just work. Sadly, many
boards do not have this information. The driver attempts standard
defaults, but they may not work. If you fall into this situation, you
need to read the section below named 'The SI Driver' on how to
hand-configure your system.
detected (via ACPI or SMBIOS tables) and should just work. Sadly,
many boards do not have this information. The driver attempts
standard defaults, but they may not work. If you fall into this
situation, you need to read the section below named 'The SI Driver' or
"The SMBus Driver" on how to hand-configure your system.
IPMI defines a standard watchdog timer. You can enable this with the
'IPMI Watchdog Timer' config option. If you compile the driver into
@ -73,6 +71,18 @@ closed (by default it is disabled on close). Go into the 'Watchdog
Cards' menu, enable 'Watchdog Timer Support', and enable the option
'Disable watchdog shutdown on close'.
IPMI systems can often be powered off using IPMI commands. Select
'IPMI Poweroff' to do this. The driver will auto-detect if the system
can be powered off by IPMI. It is safe to enable this even if your
system doesn't support this option. This works on ATCA systems, the
Radisys CPI1 card, and any IPMI system that supports standard chassis
management commands.
If you want the driver to put an event into the event log on a panic,
enable the 'Generate a panic event to all BMCs on a panic' option. If
you want the whole panic string put into the event log using OEM
events, enable the 'Generate OEM events containing the panic string'
option.
Basic Design
------------
@ -80,7 +90,7 @@ Basic Design
The Linux IPMI driver is designed to be very modular and flexible, you
only need to take the pieces you need and you can use it in many
different ways. Because of that, it's broken into many chunks of
code. These chunks are:
code. These chunks (by module name) are:
ipmi_msghandler - This is the central piece of software for the IPMI
system. It handles all messages, message timing, and responses. The
@ -93,18 +103,26 @@ ipmi_devintf - This provides a userland IOCTL interface for the IPMI
driver, each open file for this device ties in to the message handler
as an IPMI user.
ipmi_si - A driver for various system interfaces. This supports
KCS, SMIC, and may support BT in the future. Unless you have your own
custom interface, you probably need to use this.
ipmi_si - A driver for various system interfaces. This supports KCS,
SMIC, and BT interfaces. Unless you have an SMBus interface or your
own custom interface, you probably need to use this.
ipmi_smb - A driver for accessing BMCs on the SMBus. It uses the
I2C kernel driver's SMBus interfaces to send and receive IPMI messages
over the SMBus.
af_ipmi - A network socket interface to IPMI. This doesn't take up
a character device in your system.
ipmi_watchdog - IPMI requires systems to have a very capable watchdog
timer. This driver implements the standard Linux watchdog timer
interface on top of the IPMI message handler.
Note that the KCS-only interface ahs been removed.
ipmi_poweroff - Some systems support the ability to be turned off via
IPMI commands.
These are all individually selectable via configuration options.
Note that the KCS-only interface has been removed. The af_ipmi driver
is no longer supported and has been removed because it was impossible
to do 32 bit emulation on 64-bit kernels with it.
Much documentation for the interface is in the include files. The
IPMI include files are:
@ -424,7 +442,7 @@ at module load time (for a module) with:
modprobe ipmi_smb.o
addr=<adapter1>,<i2caddr1>[,<adapter2>,<i2caddr2>[,...]]
dbg=<flags1>,<flags2>...
[defaultprobe=0] [dbg_probe=1]
[defaultprobe=1] [dbg_probe=1]
The addresses are specified in pairs, the first is the adapter ID and the
second is the I2C address on that adapter.
@ -532,3 +550,67 @@ Once you open the watchdog timer, you must write a 'V' character to the
device to close it, or the timer will not stop. This is a new semantic
for the driver, but makes it consistent with the rest of the watchdog
drivers in Linux.
Panic Timeouts
--------------
The OpenIPMI driver supports the ability to put semi-custom and custom
events in the system event log if a panic occurs. if you enable the
'Generate a panic event to all BMCs on a panic' option, you will get
one event on a panic in a standard IPMI event format. If you enable
the 'Generate OEM events containing the panic string' option, you will
also get a bunch of OEM events holding the panic string.
The field settings of the events are:
* Generator ID: 0x21 (kernel)
* EvM Rev: 0x03 (this event is formatting in IPMI 1.0 format)
* Sensor Type: 0x20 (OS critical stop sensor)
* Sensor #: The first byte of the panic string (0 if no panic string)
* Event Dir | Event Type: 0x6f (Assertion, sensor-specific event info)
* Event Data 1: 0xa1 (Runtime stop in OEM bytes 2 and 3)
* Event data 2: second byte of panic string
* Event data 3: third byte of panic string
See the IPMI spec for the details of the event layout. This event is
always sent to the local management controller. It will handle routing
the message to the right place
Other OEM events have the following format:
Record ID (bytes 0-1): Set by the SEL.
Record type (byte 2): 0xf0 (OEM non-timestamped)
byte 3: The slave address of the card saving the panic
byte 4: A sequence number (starting at zero)
The rest of the bytes (11 bytes) are the panic string. If the panic string
is longer than 11 bytes, multiple messages will be sent with increasing
sequence numbers.
Because you cannot send OEM events using the standard interface, this
function will attempt to find an SEL and add the events there. It
will first query the capabilities of the local management controller.
If it has an SEL, then they will be stored in the SEL of the local
management controller. If not, and the local management controller is
an event generator, the event receiver from the local management
controller will be queried and the events sent to the SEL on that
device. Otherwise, the events go nowhere since there is nowhere to
send them.
Poweroff
--------
If the poweroff capability is selected, the IPMI driver will install
a shutdown function into the standard poweroff function pointer. This
is in the ipmi_poweroff module. When the system requests a powerdown,
it will send the proper IPMI commands to do this. This is supported on
several platforms.
There is a module parameter named "poweroff_control" that may either be zero
(do a power down) or 2 (do a power cycle, power the system off, then power
it on in a few seconds). Setting ipmi_poweroff.poweroff_control=x will do
the same thing on the kernel command line. The parameter is also available
via the proc filesystem in /proc/ipmi/poweroff_control. Note that if the
system does not support power cycling, it will always to the power off.
Note that if you have ACPI enabled, the system will prefer using ACPI to
power off.

10
Documentation/basic_profiling.txt
View File

@ -27,9 +27,13 @@ dump output readprofile -m /boot/System.map > captured_profile
Oprofile
--------
Get the source (I use 0.8) from http://oprofile.sourceforge.net/
and add "idle=poll" to the kernel command line
Get the source (see Changes for required version) from
http://oprofile.sourceforge.net/ and add "idle=poll" to the kernel command
line.
Configure with CONFIG_PROFILING=y and CONFIG_OPROFILE=y & reboot on new kernel
./configure --with-kernel-support
make install
@ -46,7 +50,7 @@ start opcontrol --start
stop opcontrol --stop
dump output opreport > output_file
To only report on the kernel, run opreport /boot/vmlinux > output_file
To only report on the kernel, run opreport -l /boot/vmlinux > output_file
A reset is needed to clear old statistics, which survive a reboot.

1
Documentation/dontdiff
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@ -111,6 +111,7 @@ mkdep
mktables
modpost
modversions.h*
offset.h
offsets.h
oui.c*
parse.c*

195
Documentation/dvb/README.dibusb → Documentation/dvb/README.dvb-usb
View File

@ -1,16 +1,40 @@
Documentation for dib3000* frontend drivers and dibusb device driver
====================================================================
Documentation for dvb-usb-framework module and its devices
Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de),
Idea behind the dvb-usb-framework
=================================
dibusb and dib3000mb/mc drivers based on GPL code, which has
In March 2005 I got the new Twinhan USB2.0 DVB-T device. They provided specs and a firmware.
Copyright (C) 2004 Amaury Demol for DiBcom (ademol@dibcom.fr)
Quite keen I wanted to put the driver (with some quirks of course) into dibusb.
After reading some specs and doing some USB snooping, it realized, that the
dibusb-driver would be a complete mess afterwards. So I decided to do it in a
different way: With the help of a dvb-usb-framework.
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, version 2.
The framework provides generic functions (mostly kernel API calls), such as:
- Transport Stream URB handling in conjunction with dvb-demux-feed-control
(bulk and isoc (TODO) are supported)
- registering the device for the DVB-API
- registering an I2C-adapter if applicable
- remote-control/input-device handling
- firmware requesting and loading (currently just for the Cypress USB
controller)
- other functions/methods which can be shared by several drivers (such as
functions for bulk-control-commands)
The source code of the particular DVB USB devices does just the communication
with the device via the bus. The connection between the DVB-API-functionality
is done via callbacks, assigned in a static device-description (struct
dvb_usb_device) each device-driver has to have.
For an example have a look in drivers/media/dvb/dvb-usb/vp7045*.
Objective is to migrate all the usb-devices (dibusb, cinergyT2, maybe the
ttusb; flexcop-usb already benefits from the generic flexcop-device) to use
the dvb-usb-lib.
TODO: dynamic enabling and disabling of the pid-filter in regard to number of
feeds requested.
Supported devices USB1.1
========================
@ -55,22 +79,34 @@ Others:
- Grandtec USB DVB-T
http://www.grand.com.tw/
- Avermedia AverTV DVBT USB (2)
- AVerMedia AverTV DVBT USB
http://www.avermedia.com/
- DiBcom USB DVB-T reference device (non-public)
Supported devices USB2.0
========================
- Twinhan MagicBox II (2)
Supported devices USB2.0-only
=============================
- Twinhan MagicBox II
http://www.twinhan.com/product_terrestrial_7.asp
- Hanftek UMT-010 (1)
- TwinhanDTV Alpha
http://www.twinhan.com/product_terrestrial_8.asp
- DigitalNow TinyUSB 2 DVB-t Receiver
http://www.digitalnow.com.au/DigitalNow%20tinyUSB2%20Specifications.html
- Hanftek UMT-010
http://www.globalsources.com/si/6008819757082/ProductDetail/Digital-TV/product_id-100046529
- Typhoon/Yakumo/HAMA DVB-T mobile USB2.0 (1)
Supported devices USB2.0 and USB1.1
=============================
- Typhoon/Yakumo/HAMA/Yuan DVB-T mobile USB2.0
http://www.yakumo.de/produkte/index.php?pid=1&ag=DVB-T
http://www.yuan.com.tw/en/products/vdo_ub300.html
http://www.hama.de/portal/articleId*114663/action*2563
http://www.anubisline.com/english/articlec.asp?id=50502&catid=002
- Artec T1 USB TVBOX (FX2) (2)
@ -81,14 +117,24 @@ Supported devices USB2.0
- DiBcom USB2.0 DVB-T reference device (non-public)
1) It is working almost.
- AVerMedia AverTV A800 DVB-T USB2.0
1) It is working almost - work-in-progress.
2) No test reports received yet.
0. History & News:
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.
0. NEWS:
(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)
2005-03-14 - added support for the Typhoon/Yakumo/HAMA DVB-T mobile USB2.0
2005-02-11 - added support for the KWorld/ADSTech Instant DVB-T USB2.0. Thanks a lot to Joachim von Caron
2005-02-02 - added support for the Hauppauge Win-TV Nova-T USB2
2005-01-31 - distorted streaming is finally gone for USB1.1 devices
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 predessors of the HanfTek UMT-010
@ -99,7 +145,7 @@ Supported devices USB2.0
2004-12-26 - refactored the dibusb-driver, splitted into separate files
- 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
@ -127,8 +173,8 @@ Supported devices USB2.0
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
- #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
@ -139,38 +185,27 @@ Supported devices USB2.0
2004-05-11 - start writing the driver
1. How to use?
NOTE: This driver was developed using Linux 2.6.6.,
it is working with 2.6.7 and above.
Linux 2.4.x support is not planned, but patches are very welcome.
NOTE: I'm using Debian testing, so the following explaination (especially
the hotplug-path) needn't match your system, but probably it will :).
The driver is included in the kernel since Linux 2.6.10.
1.1. Firmware
The USB driver needs to download a firmware to start working.
Most of the USB drivers need to download a firmware to start working.
You can either use "get_dvb_firmware dibusb" to download the firmware or you
can get it directly via
for USB1.1 (AN2135) you need: dvb-usb-dibusb-5.0.0.11.fw
for USB2.0 HanfTek: dvb-usb-umt-010-02.fw
for USB2.0 DiBcom: dvb-usb-dibusb-6.0.0.8.fw
for USB2.0 AVerMedia AverTV DVB-T USB2: dvb-usb-avertv-a800-01.fw
for USB2.0 TwinhanDTV Alpha/MagicBox II: dvb-usb-vp7045-01.fw
for USB1.1 (AN2135)
http://www.linuxtv.org/downloads/firmware/dvb-dibusb-5.0.0.11.fw
The files can be found on http://www.linuxtv.org/download/firmware/ .
for USB1.1 (AN2235) (a few Artec T1 devices)
http://www.linuxtv.org/downloads/firmware/dvb-dibusb-an2235-1.fw
We do not have the permission (yet) to publish the following firmware-files.
You'll need to extract them from the windows drivers.
for USB2.0 (FX2) Hauppauge, DiBcom
http://www.linuxtv.org/downloads/firmware/dvb-dibusb-6.0.0.5.fw
for USB2.0 ADSTech/Kworld USB2.0
http://www.linuxtv.org/downloads/firmware/dvb-dibusb-adstech-usb2-1.fw
for USB2.0 HanfTek
http://www.linuxtv.org/downloads/firmware/dvb-dibusb-an2235-1.fw
You should be able to use "get_dvb_firmware dvb-usb" to get the firmware:
for USB1.1 (AN2235) (a few Artec T1 devices): dvb-usb-dibusb-an2235-01.fw
for USB2.0 Hauppauge: dvb-usb-nova-t-usb2-01.fw
for USB2.0 ADSTech/Kworld USB2.0: dvb-usb-adstech-usb2-01.fw
for USB2.0 Yakumo/Typhoon/Hama: dvb-usb-dtt200u-01.fw
1.2. Compiling
@ -178,6 +213,9 @@ Since the driver is in the linux kernel, activating the driver in
your favorite config-environment should sufficient. I recommend
to compile the driver as module. Hotplug does the rest.
If you use dvb-kernel enter the build-2.6 directory run 'make' and 'insmod.sh
load' afterwards.
1.3. Loading the drivers
Hotplug is able to load the driver, when it is needed (because you plugged
@ -188,15 +226,13 @@ from withing the dvb-kernel cvs repository.
first have a look, which debug level are available:
modinfo dib3000mb
modinfo dib3000-common
modinfo dib3000mc
modinfo dvb-dibusb
modinfo dvb-usb
modinfo dvb-usb-vp7045
etc.
modprobe dib3000-common debug=<level>
modprobe dib3000mb debug=<level>
modprobe dib3000mc debug=<level>
modprobe dvb-dibusb debug=<level>
modprobe dvb-usb debug=<level>
modprobe dvb-usb-vp7045 debug=<level>
etc.
should do the trick.
@ -204,52 +240,32 @@ When the driver is loaded successfully, the firmware file was in
the right place and the device is connected, the "Power"-LED should be
turned on.
At this point you should be able to start a dvb-capable application. For myself
I used mplayer, dvbscan, tzap and kaxtv, they are working. Using the device
in vdr is working now also.
At this point you should be able to start a dvb-capable application. I'm use
(t|s)zap, mplayer and dvbscan to test the basics. VDR-xine provides the
long-term test scenario.
2. Known problems and bugs
- Don't remove the USB device while running an DVB application, your system will die.
- Don't remove the USB device while running an DVB application, your system
will go crazy or die most likely.
2.1. Adding support for devices
It is not possible to determine the range of devices based on the DiBcom
reference designs. This is because the reference design of DiBcom can be sold
to thirds, without telling DiBcom (so done with the Twinhan VP7041 and
the HAMA device).
When you think you have a device like this and the driver does not recognizes it,
please send the ****load*.inf and the ****cap*.inf of the Windows driver to me.
Sometimes the Vendor or Product ID is identical to the ones of Twinhan, even
though it is not a Twinhan device (e.g. HAMA), then please send me the name
of the device. I will add it to this list in order to make this clear to
others.
If you are familar with C you can also add the VID and PID of the device to
the dvb-dibusb-core.c-file and create a patch and send it over to me or to
the linux-dvb mailing list, _after_ you have tried compiling and modprobing
it.
TODO
2.2. USB1.1 Bandwidth limitation
Most of the currently supported devices are USB1.1 and thus they have a
A lot of the currently supported devices are USB1.1 and thus they have a
maximum bandwidth of about 5-6 MBit/s when connected to a USB2.0 hub.
This is not enough for receiving the complete transport stream of a
DVB-T channel (which can be about 16 MBit/s). Normally this is not a
DVB-T channel (which is about 16 MBit/s). Normally this is not a
problem, if you only want to watch TV (this does not apply for HDTV),
but watching a channel while recording another channel on the same
frequency simply does not work very well. This applies to all USB1.1
DVB-T devices, not just dibusb)
Update: For the USB1.1 and VDR some work has been done (patches and comments
are still very welcome). Maybe the problem is solved in the meantime because I
now use the dmx_sw_filter function instead of dmx_sw_filter_packet. I hope the
linux-dvb software filter is able to get the best of the garbled TS.
DVB-T devices, not just the dvb-usb-devices)
The bug, where the TS is distorted by a heavy usage of the device is gone
definitely. All dibusb-devices I was using (Twinhan, Kworld, DiBcom) are
definitely. All dvb-usb-devices I was using (Twinhan, Kworld, DiBcom) are
working like charm now with VDR. Sometimes I even was able to record a channel
and watch another one.
@ -258,7 +274,7 @@ and watch another one.
Patches, comments and suggestions are very very welcome.
3. Acknowledgements
Amaury Demol (ademol@dibcom.fr) and Francois Kanounnikoff from DiBcom for
Amaury Demol (ademol@dibcom.fr) and Francois Kanounnikoff from DiBcom for
providing specs, code and help, on which the dvb-dibusb, dib3000mb and
dib3000mc are based.
@ -270,9 +286,16 @@ Patches, comments and suggestions are very very welcome.
Bernd Wagner for helping with huge bug reports and discussions.
Gunnar Wittich and Joachim von Caron for their trust for giving me
Gunnar Wittich and Joachim von Caron for their trust for providing
root-shells on their machines to implement support for new devices.
Glen Harris for bringing up, that there is a new dibusb-device and Jiun-Kuei
Jung from AVerMedia who kindly provided a special firmware to get the device
up and running in Linux.
Jennifer Chen, Jeff and Jack from Twinhan for kindly supporting by
writing the vp7045-driver.
Some guys on the linux-dvb mailing list for encouraging me
Peter Schildmann >peter.schildmann-nospam-at-web.de< for his
@ -282,4 +305,4 @@ Patches, comments and suggestions are very very welcome.
Ulf Hermenau for helping me out with traditional chinese.
André Smoktun and Christian Frömmel for supporting me with
hardware and listening to my problems very patient
hardware and listening to my problems very patient.

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

@ -66,6 +66,14 @@ Who: Paul E. McKenney <paulmck@us.ibm.com>
---------------------------
What: remove verify_area()
When: July 2006
Files: Various uaccess.h headers.
Why: Deprecated and redundant. access_ok() should be used instead.
Who: Jesper Juhl <juhl-lkml@dif.dk>
---------------------------
What: IEEE1394 Audio and Music Data Transmission Protocol driver,
Connection Management Procedures driver
When: November 2005
@ -86,6 +94,16 @@ Who: Jody McIntyre <scjody@steamballoon.com>
---------------------------
What: register_serial/unregister_serial
When: December 2005
Why: This interface does not allow serial ports to be registered against
a struct device, and as such does not allow correct power management
of such ports. 8250-based ports should use serial8250_register_port
and serial8250_unregister_port instead.
Who: Russell King <rmk@arm.linux.org.uk>
---------------------------
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

2
Documentation/filesystems/ext2.txt
View File

@ -58,6 +58,8 @@ noacl Don't support POSIX ACLs.
nobh Do not attach buffer_heads to file pagecache.
xip Use execute in place (no caching) if possible
grpquota,noquota,quota,usrquota Quota options are silently ignored by ext2.

67
Documentation/filesystems/xip.txt Normal file
View File

@ -0,0 +1,67 @@
Execute-in-place for file mappings
----------------------------------
Motivation
----------
File mappings are performed by mapping page cache pages to userspace. In
addition, read&write type file operations also transfer data from/to the page
cache.
For memory backed storage devices that use the block device interface, the page
cache pages are in fact copies of the original storage. Various approaches
exist to work around the need for an extra copy. The ramdisk driver for example
does read the data into the page cache, keeps a reference, and discards the
original data behind later on.
Execute-in-place solves this issue the other way around: instead of keeping
data in the page cache, the need to have a page cache copy is eliminated
completely. With execute-in-place, read&write type operations are performed
directly from/to the memory backed storage device. For file mappings, the
storage device itself is mapped directly into userspace.
This implementation was initialy written for shared memory segments between
different virtual machines on s390 hardware to allow multiple machines to
share the same binaries and libraries.
Implementation
--------------
Execute-in-place is implemented in three steps: block device operation,
address space operation, and file operations.
A block device operation named direct_access is used to retrieve a
reference (pointer) to a block on-disk. The reference is supposed to be
cpu-addressable, physical address and remain valid until the release operation
is performed. A struct block_device reference is used to address the device,
and a sector_t argument is used to identify the individual block. As an
alternative, memory technology devices can be used for this.
The block device operation is optional, these block devices support it as of
today:
- dcssblk: s390 dcss block device driver
An address space operation named get_xip_page is used to retrieve reference
to a struct page. To address the target page, a reference to an address_space,
and a sector number is provided. A 3rd argument indicates whether the
function should allocate blocks if needed.
This address space operation is mutually exclusive with readpage&writepage that
do page cache read/write operations.
The following filesystems support it as of today:
- ext2: the second extended filesystem, see Documentation/filesystems/ext2.txt
A set of file operations that do utilize get_xip_page can be found in
mm/filemap_xip.c . The following file operation implementations are provided:
- aio_read/aio_write
- readv/writev
- sendfile
The generic file operations do_sync_read/do_sync_write can be used to implement
classic synchronous IO calls.
Shortcomings
------------
This implementation is limited to storage devices that are cpu addressable at
all times (no highmem or such). It works well on rom/ram, but enhancements are
needed to make it work with flash in read+write mode.
Putting the Linux kernel and/or its modules on a xip filesystem does not mean
they are not copied.

317
Documentation/keys.txt
View File

@ -22,6 +22,7 @@ This document has the following sections:
- New procfs files
- Userspace system call interface
- Kernel services
- Notes on accessing payload contents
- Defining a key type
- Request-key callback service
- Key access filesystem
@ -45,27 +46,26 @@ Each key has a number of attributes:
- State.
(*) Each key is issued a serial number of type key_serial_t that is unique
for the lifetime of that key. All serial numbers are positive non-zero
32-bit integers.
(*) Each key is issued a serial number of type key_serial_t that is unique for
the lifetime of that key. All serial numbers are positive non-zero 32-bit
integers.
Userspace programs can use a key's serial numbers as a way to gain access
to it, subject to permission checking.
(*) Each key is of a defined "type". Types must be registered inside the
kernel by a kernel service (such as a filesystem) before keys of that
type can be added or used. Userspace programs cannot define new types
directly.
kernel by a kernel service (such as a filesystem) before keys of that type
can be added or used. Userspace programs cannot define new types directly.
Key types are represented in the kernel by struct key_type. This defines
a number of operations that can be performed on a key of that type.
Key types are represented in the kernel by struct key_type. This defines a
number of operations that can be performed on a key of that type.
Should a type be removed from the system, all the keys of that type will
be invalidated.
(*) Each key has a description. This should be a printable string. The key
type provides an operation to perform a match between the description on
a key and a criterion string.
type provides an operation to perform a match between the description on a
key and a criterion string.
(*) Each key has an owner user ID, a group ID and a permissions mask. These
are used to control what a process may do to a key from userspace, and
@ -74,10 +74,10 @@ Each key has a number of attributes:
(*) Each key can be set to expire at a specific time by the key type's
instantiation function. Keys can also be immortal.
(*) Each key can have a payload. This is a quantity of data that represent
the actual "key". In the case of a keyring, this is a list of keys to
which the keyring links; in the case of a user-defined key, it's an
arbitrary blob of data.
(*) Each key can have a payload. This is a quantity of data that represent the
actual "key". In the case of a keyring, this is a list of keys to which
the keyring links; in the case of a user-defined key, it's an arbitrary
blob of data.
Having a payload is not required; and the payload can, in fact, just be a
value stored in the struct key itself.
@ -92,8 +92,8 @@ Each key has a number of attributes:
(*) Each key can be in one of a number of basic states:
(*) Uninstantiated. The key exists, but does not have any data
attached. Keys being requested from userspace will be in this state.
(*) Uninstantiated. The key exists, but does not have any data attached.
Keys being requested from userspace will be in this state.
(*) Instantiated. This is the normal state. The key is fully formed, and
has data attached.
@ -140,10 +140,10 @@ The key service provides a number of features besides keys:
clone, fork, vfork or execve occurs. A new keyring is created only when
required.
The process-specific keyring is replaced with an empty one in the child
on clone, fork, vfork unless CLONE_THREAD is supplied, in which case it
is shared. execve also discards the process's process keyring and creates
a new one.
The process-specific keyring is replaced with an empty one in the child on
clone, fork, vfork unless CLONE_THREAD is supplied, in which case it is
shared. execve also discards the process's process keyring and creates a
new one.
The session-specific keyring is persistent across clone, fork, vfork and
execve, even when the latter executes a set-UID or set-GID binary. A
@ -177,11 +177,11 @@ The key service provides a number of features besides keys:
If a system call that modifies a key or keyring in some way would put the
user over quota, the operation is refused and error EDQUOT is returned.
(*) There's a system call interface by which userspace programs can create
and manipulate keys and keyrings.
(*) There's a system call interface by which userspace programs can create and
manipulate keys and keyrings.
(*) There's a kernel interface by which services can register types and
search for keys.
(*) There's a kernel interface by which services can register types and search
for keys.
(*) There's a way for the a search done from the kernel to call back to
userspace to request a key that can't be found in a process's keyrings.
@ -194,9 +194,9 @@ The key service provides a number of features besides keys:
KEY ACCESS PERMISSIONS
======================
Keys have an owner user ID, a group access ID, and a permissions mask. The
mask has up to eight bits each for user, group and other access. Only five of
each set of eight bits are defined. These permissions granted are:
Keys have an owner user ID, a group access ID, and a permissions mask. The mask
has up to eight bits each for user, group and other access. Only five of each
set of eight bits are defined. These permissions granted are:
(*) View
@ -210,8 +210,8 @@ each set of eight bits are defined. These permissions granted are:
(*) Write
This permits a key's payload to be instantiated or updated, or it allows
a link to be added to or removed from a keyring.
This permits a key's payload to be instantiated or updated, or it allows a
link to be added to or removed from a keyring.
(*) Search
@ -238,8 +238,8 @@ about the status of the key service:
(*) /proc/keys
This lists all the keys on the system, giving information about their
type, description and permissions. The payload of the key is not
available this way:
type, description and permissions. The payload of the key is not available
this way:
SERIAL FLAGS USAGE EXPY PERM UID GID TYPE DESCRIPTION: SUMMARY
00000001 I----- 39 perm 1f0000 0 0 keyring _uid_ses.0: 1/4
@ -318,21 +318,21 @@ The main syscalls are:
If a key of the same type and description as that proposed already exists
in the keyring, this will try to update it with the given payload, or it
will return error EEXIST if that function is not supported by the key
type. The process must also have permission to write to the key to be
able to update it. The new key will have all user permissions granted and
no group or third party permissions.
type. The process must also have permission to write to the key to be able
to update it. The new key will have all user permissions granted and no
group or third party permissions.
Otherwise, this will attempt to create a new key of the specified type
and description, and to instantiate it with the supplied payload and
attach it to the keyring. In this case, an error will be generated if the
process does not have permission to write to the keyring.
Otherwise, this will attempt to create a new key of the specified type and
description, and to instantiate it with the supplied payload and attach it
to the keyring. In this case, an error will be generated if the process
does not have permission to write to the keyring.
The payload is optional, and the pointer can be NULL if not required by
the type. The payload is plen in size, and plen can be zero for an empty
payload.
A new keyring can be generated by setting type "keyring", the keyring
name as the description (or NULL) and setting the payload to NULL.
A new keyring can be generated by setting type "keyring", the keyring name
as the description (or NULL) and setting the payload to NULL.
User defined keys can be created by specifying type "user". It is
recommended that a user defined key's description by prefixed with a type
@ -369,9 +369,9 @@ The keyctl syscall functions are:
key_serial_t keyctl(KEYCTL_GET_KEYRING_ID, key_serial_t id,
int create);
The special key specified by "id" is looked up (with the key being
created if necessary) and the ID of the key or keyring thus found is
returned if it exists.
The special key specified by "id" is looked up (with the key being created
if necessary) and the ID of the key or keyring thus found is returned if
it exists.
If the key does not yet exist, the key will be created if "create" is
non-zero; and the error ENOKEY will be returned if "create" is zero.
@ -402,8 +402,8 @@ The keyctl syscall functions are:
This will try to update the specified key with the given payload, or it
will return error EOPNOTSUPP if that function is not supported by the key
type. The process must also have permission to write to the key to be
able to update it.
type. The process must also have permission to write to the key to be able
to update it.
The payload is of length plen, and may be absent or empty as for
add_key().
@ -422,8 +422,8 @@ The keyctl syscall functions are:
long keyctl(KEYCTL_CHOWN, key_serial_t key, uid_t uid, gid_t gid);
This function permits a key's owner and group ID to be changed. Either
one of uid or gid can be set to -1 to suppress that change.
This function permits a key's owner and group ID to be changed. Either one
of uid or gid can be set to -1 to suppress that change.
Only the superuser can change a key's owner to something other than the
key's current owner. Similarly, only the superuser can change a key's
@ -484,12 +484,12 @@ The keyctl syscall functions are:
long keyctl(KEYCTL_LINK, key_serial_t keyring, key_serial_t key);
This function creates a link from the keyring to the key. The process
must have write permission on the keyring and must have link permission
on the key.
This function creates a link from the keyring to the key. The process must
have write permission on the keyring and must have link permission on the
key.
Should the keyring not be a keyring, error ENOTDIR will result; and if
the keyring is full, error ENFILE will result.
Should the keyring not be a keyring, error ENOTDIR will result; and if the
keyring is full, error ENFILE will result.
The link procedure checks the nesting of the keyrings, returning ELOOP if
it appears to deep or EDEADLK if the link would introduce a cycle.
@ -503,8 +503,8 @@ The keyctl syscall functions are:
specified key, and removes it if found. Subsequent links to that key are
ignored. The process must have write permission on the keyring.
If the keyring is not a keyring, error ENOTDIR will result; and if the
key is not present, error ENOENT will be the result.
If the keyring is not a keyring, error ENOTDIR will result; and if the key
is not present, error ENOENT will be the result.
(*) Search a keyring tree for a key:
@ -513,9 +513,9 @@ The keyctl syscall functions are:
const char *type, const char *description,
key_serial_t dest_keyring);
This searches the keyring tree headed by the specified keyring until a
key is found that matches the type and description criteria. Each keyring
is checked for keys before recursion into its children occurs.
This searches the keyring tree headed by the specified keyring until a key
is found that matches the type and description criteria. Each keyring is
checked for keys before recursion into its children occurs.
The process must have search permission on the top level keyring, or else
error EACCES will result. Only keyrings that the process has search
@ -549,8 +549,8 @@ The keyctl syscall functions are:
As much of the data as can be fitted into the buffer will be copied to
userspace if the buffer pointer is not NULL.
On a successful return, the function will always return the amount of
data available rather than the amount copied.
On a successful return, the function will always return the amount of data
available rather than the amount copied.
(*) Instantiate a partially constructed key.
@ -568,8 +568,8 @@ The keyctl syscall functions are:
it, and the key must be uninstantiated.
If a keyring is specified (non-zero), the key will also be linked into
that keyring, however all the constraints applying in KEYCTL_LINK apply
in this case too.
that keyring, however all the constraints applying in KEYCTL_LINK apply in
this case too.
The payload and plen arguments describe the payload data as for add_key().
@ -587,8 +587,39 @@ The keyctl syscall functions are:
it, and the key must be uninstantiated.
If a keyring is specified (non-zero), the key will also be linked into
that keyring, however all the constraints applying in KEYCTL_LINK apply
in this case too.
that keyring, however all the constraints applying in KEYCTL_LINK apply in
this case too.
(*) Set the default request-key destination keyring.
long keyctl(KEYCTL_SET_REQKEY_KEYRING, int reqkey_defl);
This sets the default keyring to which implicitly requested keys will be
attached for this thread. reqkey_defl should be one of these constants:
CONSTANT VALUE NEW DEFAULT KEYRING
====================================== ====== =======================
KEY_REQKEY_DEFL_NO_CHANGE -1 No change
KEY_REQKEY_DEFL_DEFAULT 0 Default[1]
KEY_REQKEY_DEFL_THREAD_KEYRING 1 Thread keyring
KEY_REQKEY_DEFL_PROCESS_KEYRING 2 Process keyring
KEY_REQKEY_DEFL_SESSION_KEYRING 3 Session keyring
KEY_REQKEY_DEFL_USER_KEYRING 4 User keyring
KEY_REQKEY_DEFL_USER_SESSION_KEYRING 5 User session keyring
KEY_REQKEY_DEFL_GROUP_KEYRING 6 Group keyring
The old default will be returned if successful and error EINVAL will be
returned if reqkey_defl is not one of the above values.
The default keyring can be overridden by the keyring indicated to the
request_key() system call.
Note that this setting is inherited across fork/exec.
[1] The default default is: the thread keyring if there is one, otherwise
the process keyring if there is one, otherwise the session keyring if
there is one, otherwise the user default session keyring.
===============
@ -601,17 +632,14 @@ be broken down into two areas: keys and key types.
Dealing with keys is fairly straightforward. Firstly, the kernel service
registers its type, then it searches for a key of that type. It should retain
the key as long as it has need of it, and then it should release it. For a
filesystem or device file, a search would probably be performed during the
open call, and the key released upon close. How to deal with conflicting keys
due to two different users opening the same file is left to the filesystem
author to solve.
filesystem or device file, a search would probably be performed during the open
call, and the key released upon close. How to deal with conflicting keys due to
two different users opening the same file is left to the filesystem author to
solve.
When accessing a key's payload data, key->lock should be at least read locked,
or else the data may be changed by an update being performed from userspace
whilst the driver or filesystem is trying to access it. If no update method is
supplied, then the key's payload may be accessed without holding a lock as
there is no way to change it, provided it can be guaranteed that the key's
type definition won't go away.
When accessing a key's payload contents, certain precautions must be taken to
prevent access vs modification races. See the section "Notes on accessing
payload contents" for more information.
(*) To search for a key, call:
@ -629,6 +657,9 @@ type definition won't go away.
Should the function fail error ENOKEY, EKEYEXPIRED or EKEYREVOKED will be
returned.
If successful, the key will have been attached to the default keyring for
implicitly obtained request-key keys, as set by KEYCTL_SET_REQKEY_KEYRING.
(*) When it is no longer required, the key should be released using:
@ -690,6 +721,54 @@ type definition won't go away.
void unregister_key_type(struct key_type *type);
===================================
NOTES ON ACCESSING PAYLOAD CONTENTS
===================================
The simplest payload is just a number in key->payload.value. In this case,
there's no need to indulge in RCU or locking when accessing the payload.
More complex payload contents must be allocated and a pointer to them set in
key->payload.data. One of the following ways must be selected to access the
data:
(1) Unmodifyable key type.
If the key type does not have a modify method, then the key's payload can
be accessed without any form of locking, provided that it's known to be
instantiated (uninstantiated keys cannot be "found").
(2) The key's semaphore.
The semaphore could be used to govern access to the payload and to control
the payload pointer. It must be write-locked for modifications and would
have to be read-locked for general access. The disadvantage of doing this
is that the accessor may be required to sleep.
(3) RCU.
RCU must be used when the semaphore isn't already held; if the semaphore
is held then the contents can't change under you unexpectedly as the
semaphore must still be used to serialise modifications to the key. The
key management code takes care of this for the key type.
However, this means using:
rcu_read_lock() ... rcu_dereference() ... rcu_read_unlock()
to read the pointer, and:
rcu_dereference() ... rcu_assign_pointer() ... call_rcu()
to set the pointer and dispose of the old contents after a grace period.
Note that only the key type should ever modify a key's payload.
Furthermore, an RCU controlled payload must hold a struct rcu_head for the
use of call_rcu() and, if the payload is of variable size, the length of
the payload. key->datalen cannot be relied upon to be consistent with the
payload just dereferenced if the key's semaphore is not held.
===================
DEFINING A KEY TYPE
===================
@ -717,15 +796,15 @@ The structure has a number of fields, some of which are mandatory:
int key_payload_reserve(struct key *key, size_t datalen);
With the revised data length. Error EDQUOT will be returned if this is
not viable.
With the revised data length. Error EDQUOT will be returned if this is not
viable.
(*) int (*instantiate)(struct key *key, const void *data, size_t datalen);
This method is called to attach a payload to a key during construction.
The payload attached need not bear any relation to the data passed to
this function.
The payload attached need not bear any relation to the data passed to this
function.
If the amount of data attached to the key differs from the size in
keytype->def_datalen, then key_payload_reserve() should be called.
@ -734,38 +813,47 @@ The structure has a number of fields, some of which are mandatory:
The fact that KEY_FLAG_INSTANTIATED is not set in key->flags prevents
anything else from gaining access to the key.
This method may sleep if it wishes.
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.
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. It is safe to sleep here.
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. It is called to update a key's payload from the blob of data
provided.
If this type of key can be updated, then this method should be provided.
It is called to update a key's payload from the blob of data provided.
key_payload_reserve() should be called if the data length might change
before any changes are actually made. Note that if this succeeds, the
type is committed to changing the key because it's already been altered,
so all memory allocation must be done first.
before any changes are actually made. Note that if this succeeds, the type
is committed to changing the key because it's already been altered, so all
memory allocation must be done first.
key_payload_reserve() should be called with the key->lock write locked,
and the changes to the key's attached payload should be made before the
key is locked.
The key will have its semaphore write-locked before this method is called,
but this only deters other writers; any changes to the key's payload must
be made under RCU conditions, and call_rcu() must be used to dispose of
the old payload.
The key will have its semaphore write-locked before this method is
called. Any changes to the key should be made with the key's rwlock
write-locked also. It is safe to sleep here.
key_payload_reserve() should be called before the changes are made, but
after all allocations and other potentially failing function calls are
made.
It is safe to sleep in this method.
(*) int (*match)(const struct key *key, const void *desc);
@ -782,12 +870,12 @@ The structure has a number of fields, some of which are mandatory:
(*) void (*destroy)(struct key *key);
This method is optional. It is called to discard the payload data on a
key when it is being destroyed.
This method is optional. It is called to discard the payload data on a key
when it is being destroyed.
This method does not need to lock the key; it can consider the key as
being inaccessible. Note that the key's type may have changed before this
function is called.
This method does not need to lock the key to access the payload; it can
consider the key as being inaccessible at this time. Note that the key's
type may have been changed before this function is called.
It is not safe to sleep in this method; the caller may hold spinlocks.
@ -797,26 +885,31 @@ The structure has a number of fields, some of which are mandatory:
This method is optional. It is called during /proc/keys reading to
summarise a key's description and payload in text form.
This method will be called with the key's rwlock read-locked. This will
prevent the key's payload and state changing; also the description should
not change. This also means it is not safe to sleep in this method.
This method will be called with the RCU read lock held. rcu_dereference()
should be used to read the payload pointer if the payload is to be
accessed. key->datalen cannot be trusted to stay consistent with the
contents of the payload.
The description will not change, though the key's state may.
It is not safe to sleep in this method; the RCU read lock is held by the
caller.
(*) long (*read)(const struct key *key, char __user *buffer, size_t buflen);
This method is optional. It is called by KEYCTL_READ to translate the
key's payload into something a blob of data for userspace to deal
with. Ideally, the blob should be in the same format as that passed in to
the instantiate and update methods.
key's payload into something a blob of data for userspace to deal with.
Ideally, the blob should be in the same format as that passed in to the
instantiate and update methods.
If successful, the blob size that could be produced should be returned
rather than the size copied.
This method will be called with the key's semaphore read-locked. This
will prevent the key's payload changing. It is not necessary to also
read-lock key->lock when accessing the key's payload. It is safe to sleep
in this method, such as might happen when the userspace buffer is
accessed.
This method will be called with the key's semaphore read-locked. This will
prevent the key's payload changing. It is not necessary to use RCU locking
when accessing the key's payload. It is safe to sleep in this method, such
as might happen when the userspace buffer is accessed.
============================
@ -853,8 +946,8 @@ If it returns with the key remaining in the unconstructed state, the key will
be marked as being negative, it will be added to the session keyring, and an
error will be returned to the key requestor.
Supplementary information may be provided from whoever or whatever invoked
this service. This will be passed as the <callout_info> parameter. If no such
Supplementary information may be provided from whoever or whatever invoked this
service. This will be passed as the <callout_info> parameter. If no such
information was made available, then "-" will be passed as this parameter
instead.

56
Documentation/networking/ip-sysctl.txt
View File

@ -304,57 +304,6 @@ tcp_low_latency - BOOLEAN
changed would be a Beowulf compute cluster.
Default: 0
tcp_westwood - BOOLEAN
Enable TCP Westwood+ congestion control algorithm.
TCP Westwood+ is a sender-side only modification of the TCP Reno
protocol stack that optimizes the performance of TCP congestion
control. It is based on end-to-end bandwidth estimation to set
congestion window and slow start threshold after a congestion
episode. Using this estimation, TCP Westwood+ adaptively sets a
slow start threshold and a congestion window which takes into
account the bandwidth used at the time congestion is experienced.
TCP Westwood+ significantly increases fairness wrt TCP Reno in
wired networks and throughput over wireless links.
Default: 0
tcp_vegas_cong_avoid - BOOLEAN
Enable TCP Vegas congestion avoidance algorithm.
TCP Vegas is a sender-side only change to TCP that anticipates
the onset of congestion by estimating the bandwidth. TCP Vegas
adjusts the sending rate by modifying the congestion
window. TCP Vegas should provide less packet loss, but it is
not as aggressive as TCP Reno.
Default:0
tcp_bic - BOOLEAN
Enable BIC TCP congestion control algorithm.
BIC-TCP is a sender-side only change that ensures a linear RTT
fairness under large windows while offering both scalability and
bounded TCP-friendliness. The protocol combines two schemes
called additive increase and binary search increase. When the
congestion window is large, additive increase with a large
increment ensures linear RTT fairness as well as good
scalability. Under small congestion windows, binary search
increase provides TCP friendliness.
Default: 0
tcp_bic_low_window - INTEGER
Sets the threshold window (in packets) where BIC TCP starts to
adjust the congestion window. Below this threshold BIC TCP behaves
the same as the default TCP Reno.
Default: 14
tcp_bic_fast_convergence - BOOLEAN
Forces BIC TCP to more quickly respond to changes in congestion
window. Allows two flows sharing the same connection to converge
more rapidly.
Default: 1
tcp_default_win_scale - INTEGER
Sets the minimum window scale TCP will negotiate for on all
conections.
Default: 7
tcp_tso_win_divisor - INTEGER
This allows control over what percentage of the congestion window
can be consumed by a single TSO frame.
@ -368,6 +317,11 @@ tcp_frto - BOOLEAN
where packet loss is typically due to random radio interference
rather than intermediate router congestion.
tcp_congestion_control - STRING
Set the congestion control algorithm to be used for new
connections. The algorithm "reno" is always available, but
additional choices may be available based on kernel configuration.
somaxconn - INTEGER
Limit of socket listen() backlog, known in userspace as SOMAXCONN.
Defaults to 128. See also tcp_max_syn_backlog for additional tuning

69
Documentation/networking/tcp.txt
View File

@ -1,5 +1,72 @@
How the new TCP output machine [nyi] works.
TCP protocol
============
Last updated: 21 June 2005
Contents
========
- Congestion control
- How the new TCP output machine [nyi] works
Congestion control
==================
The following variables are used in the tcp_sock for congestion control:
snd_cwnd The size of the congestion window
snd_ssthresh Slow start threshold. We are in slow start if
snd_cwnd is less than this.
snd_cwnd_cnt A counter used to slow down the rate of increase
once we exceed slow start threshold.
snd_cwnd_clamp This is the maximum size that snd_cwnd can grow to.
snd_cwnd_stamp Timestamp for when congestion window last validated.
snd_cwnd_used Used as a highwater mark for how much of the
congestion window is in use. It is used to adjust
snd_cwnd down when the link is limited by the
application rather than the network.
As of 2.6.13, Linux supports pluggable congestion control algorithms.
A congestion control mechanism can be registered through functions in
tcp_cong.c. The functions used by the congestion control mechanism are
registered via passing a tcp_congestion_ops struct to
tcp_register_congestion_control. As a minimum name, ssthresh,
cong_avoid, min_cwnd must be valid.
Private data for a congestion control mechanism is stored in tp->ca_priv.
tcp_ca(tp) returns a pointer to this space. This is preallocated space - it
is important to check the size of your private data will fit this space, or
alternatively space could be allocated elsewhere and a pointer to it could
be stored here.
There are three kinds of congestion control algorithms currently: The
simplest ones are derived from TCP reno (highspeed, scalable) and just
provide an alternative the congestion window calculation. More complex
ones like BIC try to look at other events to provide better
heuristics. There are also round trip time based algorithms like
Vegas and Westwood+.
Good TCP congestion control is a complex problem because the algorithm
needs to maintain fairness and performance. Please review current
research and RFC's before developing new modules.
The method that is used to determine which congestion control mechanism is
determined by the setting of the sysctl net.ipv4.tcp_congestion_control.
The default congestion control will be the last one registered (LIFO);
so if you built everything as modules. the default will be reno. If you
build with the default's from Kconfig, then BIC will be builtin (not a module)
and it will end up the default.
If you really want a particular default value then you will need
to set it with the sysctl. If you use a sysctl, the module will be autoloaded
if needed and you will get the expected protocol. If you ask for an
unknown congestion method, then the sysctl attempt will fail.
If you remove a tcp congestion control module, then you will get the next
available one. Since reno can not be built as a module, and can not be
deleted, it will always be available.
How the new TCP output machine [nyi] works.
===========================================
Data is kept on a single queue. The skb->users flag tells us if the frame is
one that has been queued already. To add a frame we throw it on the end. Ack

20
Documentation/sysctl/kernel.txt
View File

@ -49,6 +49,7 @@ show up in /proc/sys/kernel:
- shmmax [ sysv ipc ]
- shmmni
- stop-a [ SPARC only ]
- suid_dumpable
- sysrq ==> Documentation/sysrq.txt
- tainted
- threads-max
@ -300,6 +301,25 @@ kernel. This value defaults to SHMMAX.
==============================================================
suid_dumpable:
This value can be used to query and set the core dump mode for setuid
or otherwise protected/tainted binaries. The modes are
0 - (default) - traditional behaviour. Any process which has changed
privilege levels or is execute only will not be dumped
1 - (debug) - all processes dump core when possible. The core dump is
owned by the current user and no security is applied. This is
intended for system debugging situations only. Ptrace is unchecked.
2 - (suidsafe) - any binary which normally would not be dumped is dumped
readable by root only. This allows the end user to remove
such a dump but not access it directly. For security reasons
core dumps in this mode will not overwrite one another or
other files. This mode is appropriate when adminstrators are
attempting to debug problems in a normal environment.
==============================================================
tainted:
Non-zero if the kernel has been tainted. Numeric values, which

2
Documentation/tty.txt
View File

@ -22,7 +22,7 @@ copy of the structure. You must not re-register over the top of the line
discipline even with the same data or your computer again will be eaten by
demons.
In order to remove a line discipline call tty_register_ldisc passing NULL.
In order to remove a line discipline call tty_unregister_ldisc().
In ancient times this always worked. In modern times the function will
return -EBUSY if the ldisc is currently in use. Since the ldisc referencing
code manages the module counts this should not usually be a concern.

14
Documentation/video4linux/CARDLIST.bttv
View File

@ -119,3 +119,17 @@ card=117 - NGS NGSTV+
card=118 - LMLBT4
card=119 - Tekram M205 PRO
card=120 - Conceptronic CONTVFMi
card=121 - Euresys Picolo Tetra
card=122 - Spirit TV Tuner
card=123 - AVerMedia AVerTV DVB-T 771
card=124 - AverMedia AverTV DVB-T 761
card=125 - MATRIX Vision Sigma-SQ
card=126 - MATRIX Vision Sigma-SLC
card=127 - APAC Viewcomp 878(AMAX)
card=128 - DVICO FusionHDTV DVB-T Lite
card=129 - V-Gear MyVCD
card=130 - Super TV Tuner
card=131 - Tibet Systems 'Progress DVR' CS16
card=132 - Kodicom 4400R (master)
card=133 - Kodicom 4400R (slave)
card=134 - Adlink RTV24

29
Documentation/video4linux/CARDLIST.cx88 Normal file
View File

@ -0,0 +1,29 @@
card=0 - UNKNOWN/GENERIC
card=1 - Hauppauge WinTV 34xxx models
card=2 - GDI Black Gold
card=3 - PixelView
card=4 - ATI TV Wonder Pro
card=5 - Leadtek Winfast 2000XP Expert
card=6 - AverTV Studio 303 (M126)
card=7 - MSI TV-@nywhere Master
card=8 - Leadtek Winfast DV2000
card=9 - Leadtek PVR 2000
card=10 - IODATA GV-VCP3/PCI
card=11 - Prolink PlayTV PVR
card=12 - ASUS PVR-416
card=13 - MSI TV-@nywhere
card=14 - KWorld/VStream XPert DVB-T
card=15 - DVICO FusionHDTV DVB-T1
card=16 - KWorld LTV883RF
card=17 - DViCO - FusionHDTV 3 Gold
card=18 - Hauppauge Nova-T DVB-T
card=19 - Conexant DVB-T reference design
card=20 - Provideo PV259
card=21 - DVICO FusionHDTV DVB-T Plus
card=22 - digitalnow DNTV Live! DVB-T
card=23 - pcHDTV HD3000 HDTV
card=24 - Hauppauge WinTV 28xxx (Roslyn) models
card=25 - Digital-Logic MICROSPACE Entertainment Center (MEC)
card=26 - IODATA GV/BCTV7E
card=27 - PixelView PlayTV Ultra Pro (Stereo)
card=28 - DViCO - FusionHDTV 3 Gold-T

29
Documentation/video4linux/CARDLIST.saa7134
View File

@ -20,16 +20,37 @@
19 -> Compro VideoMate TV [185b:c100]
20 -> Matrox CronosPlus [102B:48d0]
21 -> 10MOONS PCI TV CAPTURE CARD [1131:2001]
22 -> Medion 2819/ AverMedia M156 [1461:a70b,1461:2115]
22 -> AverMedia M156 / Medion 2819 [1461:a70b]
23 -> BMK MPEX Tuner
24 -> KNC One TV-Station DVR [1894:a006]
25 -> ASUS TV-FM 7133 [1043:4843]
26 -> Pinnacle PCTV Stereo (saa7134) [11bd:002b]
27 -> Manli MuchTV M-TV002
28 -> Manli MuchTV M-TV001
27 -> Manli MuchTV M-TV002/Behold TV 403 FM
28 -> Manli MuchTV M-TV001/Behold TV 401
29 -> Nagase Sangyo TransGear 3000TV [1461:050c]
30 -> Elitegroup ECS TVP3XP FM1216 Tuner Card(PAL-BG,FM) [1019:4cb4]
31 -> Elitegroup ECS TVP3XP FM1236 Tuner Card (NTSC,FM) [1019:4cb5]
32 -> AVACS SmartTV
33 -> AVerMedia DVD EZMaker [1461:10ff]
34 -> LifeView FlyTV Platinum33 mini [5168:0212]
34 -> Noval Prime TV 7133
35 -> AverMedia AverTV Studio 305 [1461:2115]
37 -> Items MuchTV Plus / IT-005
38 -> Terratec Cinergy 200 TV [153B:1152]
39 -> LifeView FlyTV Platinum Mini [5168:0212]
40 -> Compro VideoMate TV PVR/FM [185b:c100]
41 -> Compro VideoMate TV Gold+ [185b:c100]
42 -> Sabrent SBT-TVFM (saa7130)
43 -> :Zolid Xpert TV7134
44 -> Empire PCI TV-Radio LE
45 -> Avermedia AVerTV Studio 307 [1461:9715]
46 -> AVerMedia Cardbus TV/Radio [1461:d6ee]
47 -> Terratec Cinergy 400 mobile [153b:1162]
48 -> Terratec Cinergy 600 TV MK3 [153B:1158]
49 -> Compro VideoMate Gold+ Pal [185b:c200]
50 -> Pinnacle PCTV 300i DVB-T + PAL [11bd:002d]
51 -> ProVideo PV952 [1540:9524]
52 -> AverMedia AverTV/305 [1461:2108]
54 -> LifeView FlyTV Platinum FM [5168:0214,1489:0214]
55 -> LifeView FlyDVB-T DUO [5168:0306]
56 -> Avermedia AVerTV 307 [1461:a70a]
57 -> Avermedia AVerTV GO 007 FM [1461:f31f]

15
Documentation/video4linux/CARDLIST.tuner
View File

@ -44,3 +44,18 @@ tuner=42 - Philips 1236D ATSC/NTSC daul in
tuner=43 - Philips NTSC MK3 (FM1236MK3 or FM1236/F)
tuner=44 - Philips 4 in 1 (ATI TV Wonder Pro/Conexant)
tuner=45 - Microtune 4049 FM5
tuner=46 - Panasonic VP27s/ENGE4324D
tuner=47 - LG NTSC (TAPE series)
tuner=48 - Tenna TNF 8831 BGFF)
tuner=49 - Microtune 4042 FI5 ATSC/NTSC dual in
tuner=50 - TCL 2002N
tuner=51 - Philips PAL/SECAM_D (FM 1256 I-H3)
tuner=52 - Thomson DDT 7610 (ATSC/NTSC)
tuner=53 - Philips FQ1286
tuner=54 - tda8290+75
tuner=55 - LG PAL (TAPE series)
tuner=56 - Philips PAL/SECAM multi (FQ1216AME MK4)
tuner=57 - Philips FQ1236A MK4
tuner=58 - Ymec TVision TVF-8531MF
tuner=59 - Ymec TVision TVF-5533MF
tuner=60 - Thomson DDT 7611 (ATSC/NTSC)

54
Documentation/video4linux/hauppauge-wintv-cx88-ir.txt Normal file
View File

@ -0,0 +1,54 @@
The controls for the mux are GPIO [0,1] for source, and GPIO 2 for muting.
GPIO0 GPIO1
0 0 TV Audio
1 0 FM radio
0 1 Line-In
1 1 Mono tuner bypass or CD passthru (tuner specific)
GPIO 16(i believe) is tied to the IR port (if present).
------------------------------------------------------------------------------------
>From the data sheet:
Register 24'h20004 PCI Interrupt Status
bit [18] IR_SMP_INT Set when 32 input samples have been collected over
gpio[16] pin into GP_SAMPLE register.
What's missing from the data sheet:
Setup 4KHz sampling rate (roughly 2x oversampled; good enough for our RC5
compat remote)
set register 0x35C050 to 0xa80a80
enable sampling
set register 0x35C054 to 0x5
Of course, enable the IRQ bit 18 in the interrupt mask register .(and
provide for a handler)
GP_SAMPLE register is at 0x35C058
Bits are then right shifted into the GP_SAMPLE register at the specified
rate; you get an interrupt when a full DWORD is recieved.
You need to recover the actual RC5 bits out of the (oversampled) IR sensor
bits. (Hint: look for the 0/1and 1/0 crossings of the RC5 bi-phase data) An
actual raw RC5 code will span 2-3 DWORDS, depending on the actual alignment.
I'm pretty sure when no IR signal is present the receiver is always in a
marking state(1); but stray light, etc can cause intermittent noise values
as well. Remember, this is a free running sample of the IR receiver state
over time, so don't assume any sample starts at any particular place.
http://www.atmel.com/dyn/resources/prod_documents/doc2817.pdf
This data sheet (google search) seems to have a lovely description of the
RC5 basics
http://users.pandora.be/nenya/electronics/rc5/ and more data
http://www.ee.washington.edu/circuit_archive/text/ir_decode.txt
and even a reference to how to decode a bi-phase data stream.
http://www.xs4all.nl/~sbp/knowledge/ir/rc5.htm
still more info

42
Documentation/video4linux/lifeview.txt Normal file
View File

@ -0,0 +1,42 @@
collecting data about the lifeview models and the config coding on
gpio pins 0-9 ...
==================================================================
bt878:
LR50 rev. Q ("PARTS: 7031505116), Tuner wurde als Nr. 5 erkannt, Eingänge
SVideo, TV, Composite, Audio, Remote. CP9..1=100001001 (1: 0-Ohm-Widerstand
gegen GND unbestückt; 0: bestückt)
------------------------------------------------------------------------------
saa7134:
/* LifeView FlyTV Platinum FM (LR214WF) */
/* "Peter Missel <peter.missel@onlinehome.de> */
.name = "LifeView FlyTV Platinum FM",
/* GP27 MDT2005 PB4 pin 10 */
/* GP26 MDT2005 PB3 pin 9 */
/* GP25 MDT2005 PB2 pin 8 */
/* GP23 MDT2005 PB1 pin 7 */
/* GP22 MDT2005 PB0 pin 6 */
/* GP21 MDT2005 PB5 pin 11 */
/* GP20 MDT2005 PB6 pin 12 */
/* GP19 MDT2005 PB7 pin 13 */
/* nc MDT2005 PA3 pin 2 */
/* Remote MDT2005 PA2 pin 1 */
/* GP18 MDT2005 PA1 pin 18 */
/* nc MDT2005 PA0 pin 17 strap low */
/* GP17 Strap "GP7"=High */
/* GP16 Strap "GP6"=High
0=Radio 1=TV
Drives SA630D ENCH1 and HEF4052 A1 pins
to do FM radio through SIF input */
/* GP15 nc */
/* GP14 nc */
/* GP13 nc */
/* GP12 Strap "GP5" = High */
/* GP11 Strap "GP4" = High */
/* GP10 Strap "GP3" = High */
/* GP09 Strap "GP2" = Low */
/* GP08 Strap "GP1" = Low */
/* GP07.00 nc */

37
Documentation/video4linux/not-in-cx2388x-datasheet.txt Normal file
View File

@ -0,0 +1,37 @@
=================================================================================
MO_OUTPUT_FORMAT (0x310164)
Previous default from DScaler: 0x1c1f0008
Digit 8: 31-28
28: PREVREMOD = 1
Digit 7: 27-24 (0xc = 12 = b1100 )
27: COMBALT = 1
26: PAL_INV_PHASE
(DScaler apparently set this to 1, resulted in sucky picture)
Digits 6,5: 23-16
25-16: COMB_RANGE = 0x1f [default] (9 bits -> max 512)
Digit 4: 15-12
15: DISIFX = 0
14: INVCBF = 0
13: DISADAPT = 0
12: NARROWADAPT = 0
Digit 3: 11-8
11: FORCE2H
10: FORCEREMD
9: NCHROMAEN
8: NREMODEN
Digit 2: 7-4
7-6: YCORE
5-4: CCORE
Digit 1: 3-0
3: RANGE = 1
2: HACTEXT
1: HSFMT
=================================================================================

24
MAINTAINERS
View File

@ -304,7 +304,7 @@ S: Maintained
ARM/PT DIGITAL BOARD PORT
P: Stefan Eletzhofer
M: stefan.eletzhofer@eletztrick.de
L: linux-arm-kernel@lists.arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.arm.linux.org.uk/
S: Maintained
@ -317,21 +317,21 @@ S: Maintained
ARM/STRONGARM110 PORT
P: Russell King
M: rmk@arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.arm.linux.org.uk/
S: Maintained
ARM/S3C2410 ARM ARCHITECTURE
P: Ben Dooks
M: ben-s3c2410@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
ARM/S3C2440 ARM ARCHITECTURE
P: Ben Dooks
M: ben-s3c2440@fluff.org
L: linux-arm-kernel@lists.arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.fluff.org/ben/linux/
S: Maintained
@ -504,6 +504,13 @@ L: bonding-devel@lists.sourceforge.net
W: http://sourceforge.net/projects/bonding/
S: Supported
BROADBAND PROCESSOR ARCHITECTURE
P: Arnd Bergmann
M: arnd@arndb.de
L: linuxppc64-dev@ozlabs.org
W: http://linuxppc64.org
S: Supported
BTTV VIDEO4LINUX DRIVER
P: Gerd Knorr
M: kraxel@bytesex.org
@ -1853,7 +1860,7 @@ S: Maintained
PXA2xx SUPPORT
P: Nicolas Pitre
M: nico@cam.org
L: linux-arm-kernel@lists.arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
S: Maintained
QLOGIC QLA2XXX FC-SCSI DRIVER
@ -2138,6 +2145,11 @@ W: http://tpmdd.sourceforge.net
L: tpmdd-devel@lists.sourceforge.net
S: Maintained
TENSILICA XTENSA PORT (xtensa):
P: Chris Zankel
M: chris@zankel.net
S: Maintained
UltraSPARC (sparc64):
P: David S. Miller
M: davem@davemloft.net
@ -2155,7 +2167,7 @@ SHARP LH SUPPORT (LH7952X & LH7A40X)
P: Marc Singer
M: elf@buici.com
W: http://projects.buici.com/arm
L: linux-arm-kernel@lists.arm.linux.org.uk
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
S: Maintained
SPARC (sparc32):

2
Makefile
View File

@ -518,7 +518,7 @@ CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
ifdef CONFIG_FRAME_POINTER
CFLAGS += -fno-omit-frame-pointer
CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else
CFLAGS += -fomit-frame-pointer
endif

4
arch/alpha/Kconfig
View File

@ -509,7 +509,7 @@ config NR_CPUS
depends on SMP
default "64"
config DISCONTIGMEM
config ARCH_DISCONTIGMEM_ENABLE
bool "Discontiguous Memory Support (EXPERIMENTAL)"
depends on EXPERIMENTAL
help
@ -518,6 +518,8 @@ config DISCONTIGMEM
or have huge holes in the physical address space for other reasons.
See <file:Documentation/vm/numa> for more.
source "mm/Kconfig"
config NUMA
bool "NUMA Support (EXPERIMENTAL)"
depends on DISCONTIGMEM

2
arch/alpha/defconfig
View File

@ -96,7 +96,7 @@ CONFIG_ALPHA_CORE_AGP=y
CONFIG_ALPHA_BROKEN_IRQ_MASK=y
CONFIG_EISA=y
# CONFIG_SMP is not set
# CONFIG_DISCONTIGMEM is not set
# CONFIG_ARCH_DISCONTIGMEM_ENABLE is not set
CONFIG_VERBOSE_MCHECK=y
CONFIG_VERBOSE_MCHECK_ON=1
CONFIG_PCI_LEGACY_PROC=y

16
arch/alpha/mm/numa.c
View File

@ -327,8 +327,6 @@ void __init mem_init(void)
extern char _text, _etext, _data, _edata;
extern char __init_begin, __init_end;
unsigned long nid, i;
struct page * lmem_map;
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
reservedpages = 0;
@ -338,10 +336,10 @@ void __init mem_init(void)
*/
totalram_pages += free_all_bootmem_node(NODE_DATA(nid));
lmem_map = node_mem_map(nid);
pfn = NODE_DATA(nid)->node_start_pfn;
for (i = 0; i < node_spanned_pages(nid); i++, pfn++)
if (page_is_ram(pfn) && PageReserved(lmem_map+i))
if (page_is_ram(pfn) &&
PageReserved(nid_page_nr(nid, i)))
reservedpages++;
}
@ -373,18 +371,18 @@ show_mem(void)
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
for_each_online_node(nid) {
struct page * lmem_map = node_mem_map(nid);
i = node_spanned_pages(nid);
while (i-- > 0) {
struct page *page = nid_page_nr(nid, i);
total++;
if (PageReserved(lmem_map+i))
if (PageReserved(page))
reserved++;
else if (PageSwapCache(lmem_map+i))
else if (PageSwapCache(page))
cached++;
else if (!page_count(lmem_map+i))
else if (!page_count(page))
free++;
else
shared += page_count(lmem_map + i) - 1;
shared += page_count(page) - 1;
}
}
printk("%ld pages of RAM\n",total);

4
arch/arm/Kconfig
View File

@ -346,7 +346,7 @@ config PREEMPT
Say Y here if you are building a kernel for a desktop, embedded
or real-time system. Say N if you are unsure.
config DISCONTIGMEM
config ARCH_DISCONTIGMEM_ENABLE
bool
default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
help
@ -355,6 +355,8 @@ config DISCONTIGMEM
or have huge holes in the physical address space for other reasons.
See <file:Documentation/vm/numa> for more.
source "mm/Kconfig"
config LEDS
bool "Timer and CPU usage LEDs"
depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \

4
arch/arm/boot/install.sh
View File

@ -21,8 +21,8 @@
#
# User may have a custom install script
if [ -x ~/bin/installkernel ]; then exec ~/bin/installkernel "$@"; fi
if [ -x /sbin/installkernel ]; then exec /sbin/installkernel "$@"; fi
if [ -x ~/bin/${CROSS_COMPILE}installkernel ]; then exec ~/bin/${CROSS_COMPILE}installkernel "$@"; fi
if [ -x /sbin/${CROSS_COMPILE}installkernel ]; then exec /sbin/${CROSS_COMPILE}installkernel "$@"; fi
if [ "$(basename $2)" = "zImage" ]; then
# Compressed install

27
arch/arm/configs/s3c2410_defconfig
View File

@ -1,14 +1,13 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.12-rc1-bk2
# Sun Mar 27 17:47:45 2005
# Linux kernel version: 2.6.12-git4
# Wed Jun 22 15:56:42 2005
#
CONFIG_ARM=y
CONFIG_MMU=y
CONFIG_UID16=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_IOMAP=y
#
# Code maturity level options
@ -17,6 +16,7 @@ CONFIG_EXPERIMENTAL=y
# CONFIG_CLEAN_COMPILE is not set
CONFIG_BROKEN=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
#
# General setup
@ -35,6 +35,8 @@ CONFIG_KOBJECT_UEVENT=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_ALL is not set
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
@ -81,6 +83,7 @@ CONFIG_ARCH_S3C2410=y
# CONFIG_ARCH_VERSATILE is not set
# CONFIG_ARCH_IMX is not set
# CONFIG_ARCH_H720X is not set
# CONFIG_ARCH_AAEC2000 is not set
#
# S3C24XX Implementations
@ -134,6 +137,7 @@ CONFIG_CPU_TLB_V4WBI=y
#
# Bus support
#
CONFIG_ISA_DMA_API=y
#
# PCCARD (PCMCIA/CardBus) support
@ -143,7 +147,9 @@ CONFIG_CPU_TLB_V4WBI=y
#
# Kernel Features
#
# CONFIG_SMP is not set
# CONFIG_PREEMPT is not set
# CONFIG_DISCONTIGMEM is not set
CONFIG_ALIGNMENT_TRAP=y
#
@ -297,7 +303,6 @@ CONFIG_PARPORT_1284=y
#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_PARIDE is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
@ -359,6 +364,7 @@ CONFIG_BLK_DEV_IDE_BAST=y
#
# Fusion MPT device support
#
# CONFIG_FUSION is not set
#
# IEEE 1394 (FireWire) support
@ -378,10 +384,11 @@ CONFIG_NET=y
# Networking options
#
# CONFIG_PACKET is not set
# CONFIG_NETLINK_DEV is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
CONFIG_IP_FIB_HASH=y
# CONFIG_IP_FIB_TRIE is not set
# CONFIG_IP_MULTICAST is not set
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_PNP=y
@ -443,8 +450,9 @@ CONFIG_NETDEVICES=y
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
# CONFIG_MII is not set
CONFIG_MII=m
# CONFIG_SMC91X is not set
CONFIG_DM9000=m
#
# Ethernet (1000 Mbit)
@ -521,7 +529,6 @@ CONFIG_SERIO_SERPORT=y
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_GAMEPORT is not set
CONFIG_SOUND_GAMEPORT=y
#
# Character devices
@ -605,7 +612,6 @@ CONFIG_S3C2410_RTC=y
#
# TPM devices
#
# CONFIG_TCG_TPM is not set
#
# I2C support
@ -654,6 +660,7 @@ CONFIG_SENSORS_LM78=m
CONFIG_SENSORS_LM85=m
# CONFIG_SENSORS_LM87 is not set
# CONFIG_SENSORS_LM90 is not set
# CONFIG_SENSORS_LM92 is not set
# CONFIG_SENSORS_MAX1619 is not set
# CONFIG_SENSORS_PC87360 is not set
# CONFIG_SENSORS_SMSC47B397 is not set
@ -665,6 +672,7 @@ CONFIG_SENSORS_LM85=m
#
# Other I2C Chip support
#
# CONFIG_SENSORS_DS1337 is not set
CONFIG_SENSORS_EEPROM=m
# CONFIG_SENSORS_PCF8574 is not set
# CONFIG_SENSORS_PCF8591 is not set
@ -696,8 +704,10 @@ CONFIG_FB=y
# CONFIG_FB_CFB_COPYAREA is not set
# CONFIG_FB_CFB_IMAGEBLIT is not set
# CONFIG_FB_SOFT_CURSOR is not set
# CONFIG_FB_MACMODES is not set
CONFIG_FB_MODE_HELPERS=y
# CONFIG_FB_TILEBLITTING is not set
# CONFIG_FB_S1D13XXX is not set
# CONFIG_FB_VIRTUAL is not set
#
@ -782,7 +792,6 @@ CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
#
CONFIG_PROC_FS=y
CONFIG_SYSFS=y
# CONFIG_DEVFS_FS is not set
# CONFIG_DEVPTS_FS_XATTR is not set
# CONFIG_TMPFS is not set
# CONFIG_HUGETLBFS is not set

85
arch/arm/mach-ixp2000/core.c
View File

@ -40,6 +40,8 @@
#include <asm/mach/time.h>
#include <asm/mach/irq.h>
#include <asm/arch/gpio.h>
static DEFINE_SPINLOCK(ixp2000_slowport_lock);
static unsigned long ixp2000_slowport_irq_flags;
@ -179,7 +181,7 @@ static int ixp2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
/* clear timer 1 */
ixp2000_reg_write(IXP2000_T1_CLR, 1);
while ((next_jiffy_time - *missing_jiffy_timer_csr) > ticks_per_jiffy) {
timer_tick(regs);
next_jiffy_time -= ticks_per_jiffy;
@ -238,35 +240,40 @@ void __init ixp2000_init_time(unsigned long tick_rate)
/*************************************************************************
* GPIO helpers
*************************************************************************/
static unsigned long GPIO_IRQ_rising_edge;
static unsigned long GPIO_IRQ_falling_edge;
static unsigned long GPIO_IRQ_rising_edge;
static unsigned long GPIO_IRQ_level_low;
static unsigned long GPIO_IRQ_level_high;
void gpio_line_config(int line, int style)
static void update_gpio_int_csrs(void)
{
ixp2000_reg_write(IXP2000_GPIO_FEDR, GPIO_IRQ_falling_edge);
ixp2000_reg_write(IXP2000_GPIO_REDR, GPIO_IRQ_rising_edge);
ixp2000_reg_write(IXP2000_GPIO_LSLR, GPIO_IRQ_level_low);
ixp2000_reg_write(IXP2000_GPIO_LSHR, GPIO_IRQ_level_high);
}
void gpio_line_config(int line, int direction)
{
unsigned long flags;
local_irq_save(flags);
if (direction == GPIO_OUT) {
irq_desc[line + IRQ_IXP2000_GPIO0].valid = 0;
if(style == GPIO_OUT) {
/* if it's an output, it ain't an interrupt anymore */
ixp2000_reg_write(IXP2000_GPIO_PDSR, (1 << line));
GPIO_IRQ_falling_edge &= ~(1 << line);
GPIO_IRQ_rising_edge &= ~(1 << line);
GPIO_IRQ_level_low &= ~(1 << line);
GPIO_IRQ_level_high &= ~(1 << line);
ixp2000_reg_write(IXP2000_GPIO_FEDR, GPIO_IRQ_falling_edge);
ixp2000_reg_write(IXP2000_GPIO_REDR, GPIO_IRQ_rising_edge);
ixp2000_reg_write(IXP2000_GPIO_LSHR, GPIO_IRQ_level_high);
ixp2000_reg_write(IXP2000_GPIO_LSLR, GPIO_IRQ_level_low);
irq_desc[line+IRQ_IXP2000_GPIO0].valid = 0;
} else if(style == GPIO_IN) {
ixp2000_reg_write(IXP2000_GPIO_PDCR, (1 << line));
update_gpio_int_csrs();
ixp2000_reg_write(IXP2000_GPIO_PDSR, 1 << line);
} else if (direction == GPIO_IN) {
ixp2000_reg_write(IXP2000_GPIO_PDCR, 1 << line);
}
local_irq_restore(flags);
}
}
/*************************************************************************
@ -285,9 +292,50 @@ static void ixp2000_GPIO_irq_handler(unsigned int irq, struct irqdesc *desc, str
}
}
static int ixp2000_GPIO_irq_type(unsigned int irq, unsigned int type)
{
int line = irq - IRQ_IXP2000_GPIO0;
/*
* First, configure this GPIO line as an input.
*/
ixp2000_reg_write(IXP2000_GPIO_PDCR, 1 << line);
/*
* Then, set the proper trigger type.
*/
if (type & IRQT_FALLING)
GPIO_IRQ_falling_edge |= 1 << line;
else
GPIO_IRQ_falling_edge &= ~(1 << line);
if (type & IRQT_RISING)
GPIO_IRQ_rising_edge |= 1 << line;
else
GPIO_IRQ_rising_edge &= ~(1 << line);
if (type & IRQT_LOW)
GPIO_IRQ_level_low |= 1 << line;
else
GPIO_IRQ_level_low &= ~(1 << line);
if (type & IRQT_HIGH)
GPIO_IRQ_level_high |= 1 << line;
else
GPIO_IRQ_level_high &= ~(1 << line);
update_gpio_int_csrs();
/*
* Finally, mark the corresponding IRQ as valid.
*/
irq_desc[irq].valid = 1;
return 0;
}
static void ixp2000_GPIO_irq_mask_ack(unsigned int irq)
{
ixp2000_reg_write(IXP2000_GPIO_INCR, (1 << (irq - IRQ_IXP2000_GPIO0)));
ixp2000_reg_write(IXP2000_GPIO_EDSR, (1 << (irq - IRQ_IXP2000_GPIO0)));
ixp2000_reg_write(IXP2000_GPIO_LDSR, (1 << (irq - IRQ_IXP2000_GPIO0)));
ixp2000_reg_write(IXP2000_GPIO_INST, (1 << (irq - IRQ_IXP2000_GPIO0)));
}
@ -302,6 +350,7 @@ static void ixp2000_GPIO_irq_unmask(unsigned int irq)
}
static struct irqchip ixp2000_GPIO_irq_chip = {
.type = ixp2000_GPIO_irq_type,
.ack = ixp2000_GPIO_irq_mask_ack,
.mask = ixp2000_GPIO_irq_mask,
.unmask = ixp2000_GPIO_irq_unmask
@ -338,7 +387,7 @@ static void ixp2000_irq_mask(unsigned int irq)
static void ixp2000_irq_unmask(unsigned int irq)
{
ixp2000_reg_write(IXP2000_IRQ_ENABLE_SET, (1 << irq));
ixp2000_reg_write(IXP2000_IRQ_ENABLE_SET, (1 << irq));
}
static struct irqchip ixp2000_irq_chip = {
@ -375,16 +424,16 @@ void __init ixp2000_init_irq(void)
* our mask/unmask code much simpler.
*/
for (irq = IRQ_IXP2000_SOFT_INT; irq <= IRQ_IXP2000_THDB3; irq++) {
if((1 << irq) & IXP2000_VALID_IRQ_MASK) {
if ((1 << irq) & IXP2000_VALID_IRQ_MASK) {
set_irq_chip(irq, &ixp2000_irq_chip);
set_irq_handler(irq, do_level_IRQ);
set_irq_flags(irq, IRQF_VALID);
} else set_irq_flags(irq, 0);
}
/*
* GPIO IRQs are invalid until someone sets the interrupt mode
* by calling gpio_line_set();
* by calling set_irq_type().
*/
for (irq = IRQ_IXP2000_GPIO0; irq <= IRQ_IXP2000_GPIO7; irq++) {
set_irq_chip(irq, &ixp2000_GPIO_irq_chip);

8
arch/arm/mach-ixp4xx/common.c
View File

@ -141,7 +141,15 @@ static struct map_desc ixp4xx_io_desc[] __initdata = {
.physical = IXP4XX_PCI_CFG_BASE_PHYS,
.length = IXP4XX_PCI_CFG_REGION_SIZE,
.type = MT_DEVICE
},
#ifdef CONFIG_DEBUG_LL
{ /* Debug UART mapping */
.virtual = IXP4XX_DEBUG_UART_BASE_VIRT,
.physical = IXP4XX_DEBUG_UART_BASE_PHYS,
.length = IXP4XX_DEBUG_UART_REGION_SIZE,
.type = MT_DEVICE
}
#endif
};
void __init ixp4xx_map_io(void)

49
arch/arm/mach-s3c2410/mach-bast.c
View File

@ -26,6 +26,7 @@
* 03-Mar-2005 BJD Ensured that bast-cpld.h is included
* 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
* 14-Mar-2006 BJD Updated for __iomem changes
* 22-Jun-2006 BJD Added DM9000 platform information
*/
#include <linux/kernel.h>
@ -35,6 +36,7 @@
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/dm9000.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@ -53,6 +55,7 @@
#include <asm/arch/regs-serial.h>
#include <asm/arch/regs-gpio.h>
#include <asm/arch/regs-mem.h>
#include <asm/arch/regs-lcd.h>
#include <asm/arch/nand.h>
#include <linux/mtd/mtd.h>
@ -112,7 +115,6 @@ static struct map_desc bast_iodesc[] __initdata = {
{ VA_C2(BAST_VA_ISAMEM), PA_CS2(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
{ VA_C2(BAST_VA_ASIXNET), PA_CS3(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE },
{ VA_C2(BAST_VA_SUPERIO), PA_CS2(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
{ VA_C2(BAST_VA_DM9000), PA_CS2(BAST_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C2(BAST_VA_IDEPRI), PA_CS3(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C2(BAST_VA_IDESEC), PA_CS3(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C2(BAST_VA_IDEPRIAUX), PA_CS3(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
@ -123,7 +125,6 @@ static struct map_desc bast_iodesc[] __initdata = {
{ VA_C3(BAST_VA_ISAMEM), PA_CS3(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
{ VA_C3(BAST_VA_ASIXNET), PA_CS3(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE },
{ VA_C3(BAST_VA_SUPERIO), PA_CS3(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
{ VA_C3(BAST_VA_DM9000), PA_CS3(BAST_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C3(BAST_VA_IDEPRI), PA_CS3(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C3(BAST_VA_IDESEC), PA_CS3(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C3(BAST_VA_IDEPRIAUX), PA_CS3(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
@ -134,7 +135,6 @@ static struct map_desc bast_iodesc[] __initdata = {
{ VA_C4(BAST_VA_ISAMEM), PA_CS4(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
{ VA_C4(BAST_VA_ASIXNET), PA_CS5(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE },
{ VA_C4(BAST_VA_SUPERIO), PA_CS4(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
{ VA_C4(BAST_VA_DM9000), PA_CS4(BAST_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C4(BAST_VA_IDEPRI), PA_CS5(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C4(BAST_VA_IDESEC), PA_CS5(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C4(BAST_VA_IDEPRIAUX), PA_CS5(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
@ -145,7 +145,6 @@ static struct map_desc bast_iodesc[] __initdata = {
{ VA_C5(BAST_VA_ISAMEM), PA_CS5(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
{ VA_C5(BAST_VA_ASIXNET), PA_CS5(BAST_PA_ASIXNET), SZ_1M, MT_DEVICE },
{ VA_C5(BAST_VA_SUPERIO), PA_CS5(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
{ VA_C5(BAST_VA_DM9000), PA_CS5(BAST_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C5(BAST_VA_IDEPRI), PA_CS5(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C5(BAST_VA_IDESEC), PA_CS5(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C5(BAST_VA_IDEPRIAUX), PA_CS5(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
@ -313,6 +312,45 @@ static struct s3c2410_platform_nand bast_nand_info = {
.select_chip = bast_nand_select,
};
/* DM9000 */
static struct resource bast_dm9k_resource[] = {
[0] = {
.start = S3C2410_CS5 + BAST_PA_DM9000,
.end = S3C2410_CS5 + BAST_PA_DM9000 + 3,
.flags = IORESOURCE_MEM
},
[1] = {
.start = S3C2410_CS5 + BAST_PA_DM9000 + 0x40,
.end = S3C2410_CS5 + BAST_PA_DM9000 + 0x40 + 0x3f,
.flags = IORESOURCE_MEM
},
[2] = {
.start = IRQ_DM9000,
.end = IRQ_DM9000,
.flags = IORESOURCE_IRQ
}
};
/* for the moment we limit ourselves to 16bit IO until some
* better IO routines can be written and tested
*/
struct dm9000_plat_data bast_dm9k_platdata = {
.flags = DM9000_PLATF_16BITONLY
};
static struct platform_device bast_device_dm9k = {
.name = "dm9000",
.id = 0,
.num_resources = ARRAY_SIZE(bast_dm9k_resource),
.resource = bast_dm9k_resource,
.dev = {
.platform_data = &bast_dm9k_platdata,
}
};
/* Standard BAST devices */
@ -324,7 +362,8 @@ static struct platform_device *bast_devices[] __initdata = {
&s3c_device_iis,
&s3c_device_rtc,
&s3c_device_nand,
&bast_device_nor
&bast_device_nor,
&bast_device_dm9k,
};
static struct clk *bast_clocks[] = {

77
arch/arm/mach-s3c2410/mach-vr1000.c
View File

@ -27,6 +27,7 @@
* 10-Feb-2005 BJD Added power-off capability
* 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
* 14-Mar-2006 BJD void __iomem fixes
* 22-Jun-2006 BJD Added DM9000 platform information
*/
#include <linux/kernel.h>
@ -35,6 +36,7 @@
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/dm9000.h>
#include <linux/serial.h>
#include <linux/tty.h>
@ -98,28 +100,24 @@ static struct map_desc vr1000_iodesc[] __initdata = {
* are only 8bit */
/* slow, byte */
{ VA_C2(VR1000_VA_DM9000), PA_CS2(VR1000_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C2(VR1000_VA_IDEPRI), PA_CS3(VR1000_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C2(VR1000_VA_IDESEC), PA_CS3(VR1000_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C2(VR1000_VA_IDEPRIAUX), PA_CS3(VR1000_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
{ VA_C2(VR1000_VA_IDESECAUX), PA_CS3(VR1000_PA_IDESECAUX), SZ_1M, MT_DEVICE },
/* slow, word */
{ VA_C3(VR1000_VA_DM9000), PA_CS3(VR1000_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C3(VR1000_VA_IDEPRI), PA_CS3(VR1000_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C3(VR1000_VA_IDESEC), PA_CS3(VR1000_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C3(VR1000_VA_IDEPRIAUX), PA_CS3(VR1000_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
{ VA_C3(VR1000_VA_IDESECAUX), PA_CS3(VR1000_PA_IDESECAUX), SZ_1M, MT_DEVICE },
/* fast, byte */
{ VA_C4(VR1000_VA_DM9000), PA_CS4(VR1000_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C4(VR1000_VA_IDEPRI), PA_CS5(VR1000_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C4(VR1000_VA_IDESEC), PA_CS5(VR1000_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C4(VR1000_VA_IDEPRIAUX), PA_CS5(VR1000_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
{ VA_C4(VR1000_VA_IDESECAUX), PA_CS5(VR1000_PA_IDESECAUX), SZ_1M, MT_DEVICE },
/* fast, word */
{ VA_C5(VR1000_VA_DM9000), PA_CS5(VR1000_PA_DM9000), SZ_1M, MT_DEVICE },
{ VA_C5(VR1000_VA_IDEPRI), PA_CS5(VR1000_PA_IDEPRI), SZ_1M, MT_DEVICE },
{ VA_C5(VR1000_VA_IDESEC), PA_CS5(VR1000_PA_IDESEC), SZ_1M, MT_DEVICE },
{ VA_C5(VR1000_VA_IDEPRIAUX), PA_CS5(VR1000_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
@ -246,6 +244,74 @@ static struct platform_device vr1000_nor = {
.resource = vr1000_nor_resource,
};
/* DM9000 ethernet devices */
static struct resource vr1000_dm9k0_resource[] = {
[0] = {
.start = S3C2410_CS5 + VR1000_PA_DM9000,
.end = S3C2410_CS5 + VR1000_PA_DM9000 + 3,
.flags = IORESOURCE_MEM
},
[1] = {
.start = S3C2410_CS5 + VR1000_PA_DM9000 + 0x40,
.end = S3C2410_CS5 + VR1000_PA_DM9000 + 0x7f,
.flags = IORESOURCE_MEM
},
[2] = {
.start = IRQ_VR1000_DM9000A,
.end = IRQ_VR1000_DM9000A,
.flags = IORESOURCE_IRQ
}
};
static struct resource vr1000_dm9k1_resource[] = {
[0] = {
.start = S3C2410_CS5 + VR1000_PA_DM9000 + 0x80,
.end = S3C2410_CS5 + VR1000_PA_DM9000 + 0x83,
.flags = IORESOURCE_MEM
},
[1] = {
.start = S3C2410_CS5 + VR1000_PA_DM9000 + 0xC0,
.end = S3C2410_CS5 + VR1000_PA_DM9000 + 0xFF,
.flags = IORESOURCE_MEM
},
[2] = {
.start = IRQ_VR1000_DM9000N,
.end = IRQ_VR1000_DM9000N,
.flags = IORESOURCE_IRQ
}
};
/* for the moment we limit ourselves to 16bit IO until some
* better IO routines can be written and tested
*/
struct dm9000_plat_data vr1000_dm9k_platdata = {
.flags = DM9000_PLATF_16BITONLY,
};
static struct platform_device vr1000_dm9k0 = {
.name = "dm9000",
.id = 0,
.num_resources = ARRAY_SIZE(vr1000_dm9k0_resource),
.resource = vr1000_dm9k0_resource,
.dev = {
.platform_data = &vr1000_dm9k_platdata,
}
};
static struct platform_device vr1000_dm9k1 = {
.name = "dm9000",
.id = 1,
.num_resources = ARRAY_SIZE(vr1000_dm9k1_resource),
.resource = vr1000_dm9k1_resource,
.dev = {
.platform_data = &vr1000_dm9k_platdata,
}
};
/* devices for this board */
static struct platform_device *vr1000_devices[] __initdata = {
&s3c_device_usb,
@ -253,8 +319,11 @@ static struct platform_device *vr1000_devices[] __initdata = {
&s3c_device_wdt,
&s3c_device_i2c,
&s3c_device_iis,
&s3c_device_adc,
&serial_device,
&vr1000_nor,
&vr1000_dm9k0,
&vr1000_dm9k1
};
static struct clk *vr1000_clocks[] = {

6
arch/arm/mm/proc-v6.S
View File

@ -132,8 +132,8 @@ ENTRY(cpu_v6_switch_mm)
* 100x 1 0 1 r/o no acc
* 10x0 1 0 1 r/o no acc
* 1011 0 0 1 r/w no acc
* 110x 1 1 0 r/o r/o
* 11x0 1 1 0 r/o r/o
* 110x 0 1 0 r/w r/o
* 11x0 0 1 0 r/w r/o
* 1111 0 1 1 r/w r/w
*/
ENTRY(cpu_v6_set_pte)
@ -150,7 +150,7 @@ ENTRY(cpu_v6_set_pte)
tst r1, #L_PTE_USER
orrne r2, r2, #AP1 | nG
tstne r2, #APX
eorne r2, r2, #AP0
bicne r2, r2, #APX | AP0
tst r1, #L_PTE_YOUNG
biceq r2, r2, #APX | AP1 | AP0

22
arch/arm/nwfpe/softfloat-macros
View File

@ -563,8 +563,14 @@ static bits64 estimateDiv128To64( bits64 a0, bits64 a1, bits64 b )
bits64 rem0, rem1, term0, term1;
bits64 z;
if ( b <= a0 ) return LIT64( 0xFFFFFFFFFFFFFFFF );
b0 = b>>32;
z = ( b0<<32 <= a0 ) ? LIT64( 0xFFFFFFFF00000000 ) : ( a0 / b0 )<<32;
b0 = b>>32; /* hence b0 is 32 bits wide now */
if ( b0<<32 <= a0 ) {
z = LIT64( 0xFFFFFFFF00000000 );
} else {
z = a0;
do_div( z, b0 );
z <<= 32;
}
mul64To128( b, z, &term0, &term1 );
sub128( a0, a1, term0, term1, &rem0, &rem1 );
while ( ( (sbits64) rem0 ) < 0 ) {
@ -573,7 +579,12 @@ static bits64 estimateDiv128To64( bits64 a0, bits64 a1, bits64 b )
add128( rem0, rem1, b0, b1, &rem0, &rem1 );
}
rem0 = ( rem0<<32 ) | ( rem1>>32 );
z |= ( b0<<32 <= rem0 ) ? 0xFFFFFFFF : rem0 / b0;
if ( b0<<32 <= rem0 ) {
z |= 0xFFFFFFFF;
} else {
do_div( rem0, b0 );
z |= rem0;
}
return z;
}
@ -601,6 +612,7 @@ static bits32 estimateSqrt32( int16 aExp, bits32 a )
};
int8 index;
bits32 z;
bits64 A;
index = ( a>>27 ) & 15;
if ( aExp & 1 ) {
@ -614,7 +626,9 @@ static bits32 estimateSqrt32( int16 aExp, bits32 a )
z = ( 0x20000 <= z ) ? 0xFFFF8000 : ( z<<15 );
if ( z <= a ) return (bits32) ( ( (sbits32) a )>>1 );
}
return ( (bits32) ( ( ( (bits64) a )<<31 ) / z ) ) + ( z>>1 );
A = ( (bits64) a )<<31;
do_div( A, z );
return ( (bits32) A ) + ( z>>1 );
}

12
arch/arm/nwfpe/softfloat.c
View File

@ -28,6 +28,8 @@ this code that are retained.
===============================================================================
*/
#include <asm/div64.h>
#include "fpa11.h"
//#include "milieu.h"
//#include "softfloat.h"
@ -1331,7 +1333,11 @@ float32 float32_div( float32 a, float32 b )
aSig >>= 1;
++zExp;
}
zSig = ( ( (bits64) aSig )<<32 ) / bSig;
{
bits64 tmp = ( (bits64) aSig )<<32;
do_div( tmp, bSig );
zSig = tmp;
}
if ( ( zSig & 0x3F ) == 0 ) {
zSig |= ( ( (bits64) bSig ) * zSig != ( (bits64) aSig )<<32 );
}
@ -1397,7 +1403,9 @@ float32 float32_rem( float32 a, float32 b )
q = ( bSig <= aSig );
if ( q ) aSig -= bSig;
if ( 0 < expDiff ) {
q = ( ( (bits64) aSig )<<32 ) / bSig;
bits64 tmp = ( (bits64) aSig )<<32;
do_div( tmp, bSig );
q = tmp;
q >>= 32 - expDiff;
bSig >>= 2;
aSig = ( ( aSig>>1 )<<( expDiff - 1 ) ) - bSig * q;

2
arch/arm26/Kconfig
View File

@ -179,6 +179,8 @@ config CMDLINE
time by entering them here. As a minimum, you should specify the
memory size and the root device (e.g., mem=64M root=/dev/nfs).
source "mm/Kconfig"
endmenu
source "drivers/base/Kconfig"

4
arch/arm26/boot/install.sh
View File

@ -23,8 +23,8 @@
# User may have a custom install script
if [ -x /sbin/installkernel ]; then
exec /sbin/installkernel "$@"
if [ -x /sbin/${CROSS_COMPILE}installkernel ]; then
exec /sbin/${CROSS_COMPILE}installkernel "$@"
fi
if [ "$2" = "zImage" ]; then

2
arch/cris/Kconfig
View File

@ -74,6 +74,8 @@ config PREEMPT
Say Y here if you are building a kernel for a desktop, embedded
or real-time system. Say N if you are unsure.
source mm/Kconfig
endmenu
menu "Hardware setup"

2
arch/frv/Kconfig
View File

@ -74,6 +74,8 @@ config HIGHPTE
with a lot of RAM, this can be wasteful of precious low memory.
Setting this option will put user-space page tables in high memory.
source "mm/Kconfig"
choice
prompt "uClinux kernel load address"
depends on !MMU

3
arch/h8300/Kconfig.cpu
View File

@ -180,4 +180,7 @@ config CPU_H8S
config PREEMPT
bool "Preemptible Kernel"
default n
source "mm/Kconfig"
endmenu

4
arch/h8300/platform/h8300h/ptrace_h8300h.c
View File

@ -245,12 +245,12 @@ static unsigned short *getnextpc(struct task_struct *child, unsigned short *pc)
addr = h8300_get_reg(child, regno-1+PT_ER1);
return (unsigned short *)addr;
case relb:
if ((inst = 0x55) || isbranch(child,inst & 0x0f))
if (inst == 0x55 || isbranch(child,inst & 0x0f))
pc = (unsigned short *)((unsigned long)pc +
((signed char)(*fetch_p)));
return pc+1; /* skip myself */
case relw:
if ((inst = 0x5c) || isbranch(child,(*fetch_p & 0xf0) >> 4))
if (inst == 0x5c || isbranch(child,(*fetch_p & 0xf0) >> 4))
pc = (unsigned short *)((unsigned long)pc +
((signed short)(*(pc+1))));
return pc+2; /* skip myself */

40
arch/i386/Kconfig
View File

@ -68,7 +68,6 @@ config X86_VOYAGER
config X86_NUMAQ
bool "NUMAQ (IBM/Sequent)"
select DISCONTIGMEM
select NUMA
help
This option is used for getting Linux to run on a (IBM/Sequent) NUMA
@ -783,26 +782,49 @@ comment "NUMA (NUMA-Q) requires SMP, 64GB highmem support"
comment "NUMA (Summit) requires SMP, 64GB highmem support, ACPI"
depends on X86_SUMMIT && (!HIGHMEM64G || !ACPI)
config DISCONTIGMEM
bool
depends on NUMA
default y
config HAVE_ARCH_BOOTMEM_NODE
bool
depends on NUMA
default y
config HAVE_MEMORY_PRESENT
config ARCH_HAVE_MEMORY_PRESENT
bool
depends on DISCONTIGMEM
default y
config NEED_NODE_MEMMAP_SIZE
bool
depends on DISCONTIGMEM
depends on DISCONTIGMEM || SPARSEMEM
default y
config HAVE_ARCH_ALLOC_REMAP
bool
depends on NUMA
default y
config ARCH_DISCONTIGMEM_ENABLE
def_bool y
depends on NUMA
config ARCH_DISCONTIGMEM_DEFAULT
def_bool y
depends on NUMA
config ARCH_SPARSEMEM_ENABLE
def_bool y
depends on NUMA
config ARCH_SELECT_MEMORY_MODEL
def_bool y
depends on ARCH_SPARSEMEM_ENABLE
source "mm/Kconfig"
config HAVE_ARCH_EARLY_PFN_TO_NID
bool
default y
depends on NUMA
config HIGHPTE
bool "Allocate 3rd-level pagetables from highmem"
depends on HIGHMEM4G || HIGHMEM64G
@ -939,6 +961,8 @@ config SECCOMP
If unsure, say Y. Only embedded should say N here.
source kernel/Kconfig.hz
endmenu

7
arch/i386/Makefile
View File

@ -17,6 +17,13 @@
# 20050320 Kianusch Sayah Karadji <kianusch@sk-tech.net>
# Added support for GEODE CPU
HAS_BIARCH := $(call cc-option-yn, -m32)
ifeq ($(HAS_BIARCH),y)
AS := $(AS) --32
LD := $(LD) -m elf_i386
CC := $(CC) -m32
endif
LDFLAGS := -m elf_i386
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
LDFLAGS_vmlinux :=

4
arch/i386/boot/install.sh
View File

@ -21,8 +21,8 @@
# User may have a custom install script
if [ -x ~/bin/installkernel ]; then exec ~/bin/installkernel "$@"; fi
if [ -x /sbin/installkernel ]; then exec /sbin/installkernel "$@"; fi
if [ -x ~/bin/${CROSS_COMPILE}installkernel ]; then exec ~/bin/${CROSS_COMPILE}installkernel "$@"; fi
if [ -x /sbin/${CROSS_COMPILE}installkernel ]; then exec /sbin/${CROSS_COMPILE}installkernel "$@"; fi
# Default install - same as make zlilo

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

@ -1133,7 +1133,7 @@ inline void smp_local_timer_interrupt(struct pt_regs * regs)
}
#ifdef CONFIG_SMP
update_process_times(user_mode(regs));
update_process_times(user_mode_vm(regs));
#endif
}

2
arch/i386/kernel/cpu/common.c
View File

@ -635,7 +635,7 @@ void __init cpu_init (void)
/* Clear all 6 debug registers: */
#define CD(register) __asm__("movl %0,%%db" #register ::"r"(0) );
#define CD(register) set_debugreg(0, register)
CD(0); CD(1); CD(2); CD(3); /* no db4 and db5 */; CD(6); CD(7);

23
arch/i386/kernel/cpu/mtrr/main.c
View File

@ -375,6 +375,19 @@ int mtrr_add_page(unsigned long base, unsigned long size,
return error;
}
static int mtrr_check(unsigned long base, unsigned long size)
{
if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
printk(KERN_WARNING
"mtrr: size and base must be multiples of 4 kiB\n");
printk(KERN_DEBUG
"mtrr: size: 0x%lx base: 0x%lx\n", size, base);
dump_stack();
return -1;
}
return 0;
}
/**
* mtrr_add - Add a memory type region
* @base: Physical base address of region
@ -415,11 +428,8 @@ int
mtrr_add(unsigned long base, unsigned long size, unsigned int type,
char increment)
{
if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
printk(KERN_WARNING "mtrr: size and base must be multiples of 4 kiB\n");
printk(KERN_DEBUG "mtrr: size: 0x%lx base: 0x%lx\n", size, base);
if (mtrr_check(base, size))
return -EINVAL;
}
return mtrr_add_page(base >> PAGE_SHIFT, size >> PAGE_SHIFT, type,
increment);
}
@ -511,11 +521,8 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
int
mtrr_del(int reg, unsigned long base, unsigned long size)
{
if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
printk(KERN_INFO "mtrr: size and base must be multiples of 4 kiB\n");
printk(KERN_DEBUG "mtrr: size: 0x%lx base: 0x%lx\n", size, base);
if (mtrr_check(base, size))
return -EINVAL;
}
return mtrr_del_page(reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT);
}

2
arch/i386/kernel/cpu/proc.c
View File

@ -86,7 +86,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, "stepping\t: unknown\n");
if ( cpu_has(c, X86_FEATURE_TSC) ) {
seq_printf(m, "cpu MHz\t\t: %lu.%03lu\n",
seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
cpu_khz / 1000, (cpu_khz % 1000));
}

160
arch/i386/kernel/i386_ksyms.c
View File

@ -1,97 +1,17 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/user.h>
#include <linux/elfcore.h>
#include <linux/mca.h>
#include <linux/sched.h>
#include <linux/in6.h>
#include <linux/interrupt.h>
#include <linux/smp_lock.h>
#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/apm_bios.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/tty.h>
#include <linux/highmem.h>
#include <linux/time.h>
#include <asm/semaphore.h>
#include <asm/processor.h>
#include <asm/i387.h>
#include <asm/uaccess.h>
#include <asm/checksum.h>
#include <asm/io.h>
#include <asm/delay.h>
#include <asm/irq.h>
#include <asm/mmx.h>
#include <asm/desc.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/nmi.h>
#include <asm/ist.h>
#include <asm/kdebug.h>
extern void dump_thread(struct pt_regs *, struct user *);
extern spinlock_t rtc_lock;
/* This is definitely a GPL-only symbol */
EXPORT_SYMBOL_GPL(cpu_gdt_table);
#if defined(CONFIG_APM_MODULE)
extern void machine_real_restart(unsigned char *, int);
EXPORT_SYMBOL(machine_real_restart);
extern void default_idle(void);
EXPORT_SYMBOL(default_idle);
#endif
#ifdef CONFIG_SMP
extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
#endif
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
extern struct drive_info_struct drive_info;
EXPORT_SYMBOL(drive_info);
#endif
extern unsigned long cpu_khz;
extern unsigned long get_cmos_time(void);
/* platform dependent support */
EXPORT_SYMBOL(boot_cpu_data);
#ifdef CONFIG_DISCONTIGMEM
EXPORT_SYMBOL(node_data);
EXPORT_SYMBOL(physnode_map);
#endif
#ifdef CONFIG_X86_NUMAQ
EXPORT_SYMBOL(xquad_portio);
#endif
EXPORT_SYMBOL(dump_thread);
EXPORT_SYMBOL(dump_fpu);
EXPORT_SYMBOL_GPL(kernel_fpu_begin);
EXPORT_SYMBOL(__ioremap);
EXPORT_SYMBOL(ioremap_nocache);
EXPORT_SYMBOL(iounmap);
EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(pm_idle);
EXPORT_SYMBOL(pm_power_off);
EXPORT_SYMBOL(get_cmos_time);
EXPORT_SYMBOL(cpu_khz);
EXPORT_SYMBOL(apm_info);
EXPORT_SYMBOL(__down_failed);
EXPORT_SYMBOL(__down_failed_interruptible);
EXPORT_SYMBOL(__down_failed_trylock);
EXPORT_SYMBOL(__up_wakeup);
/* Networking helper routines. */
EXPORT_SYMBOL(csum_partial_copy_generic);
/* Delay loops */
EXPORT_SYMBOL(__ndelay);
EXPORT_SYMBOL(__udelay);
EXPORT_SYMBOL(__delay);
EXPORT_SYMBOL(__const_udelay);
EXPORT_SYMBOL(__get_user_1);
EXPORT_SYMBOL(__get_user_2);
@ -105,87 +25,11 @@ EXPORT_SYMBOL(__put_user_8);
EXPORT_SYMBOL(strpbrk);
EXPORT_SYMBOL(strstr);
EXPORT_SYMBOL(strncpy_from_user);
EXPORT_SYMBOL(__strncpy_from_user);
EXPORT_SYMBOL(clear_user);
EXPORT_SYMBOL(__clear_user);
EXPORT_SYMBOL(__copy_from_user_ll);
EXPORT_SYMBOL(__copy_to_user_ll);
EXPORT_SYMBOL(strnlen_user);
EXPORT_SYMBOL(dma_alloc_coherent);
EXPORT_SYMBOL(dma_free_coherent);
#ifdef CONFIG_PCI
EXPORT_SYMBOL(pci_mem_start);
#endif
#ifdef CONFIG_PCI_BIOS
EXPORT_SYMBOL(pcibios_set_irq_routing);
EXPORT_SYMBOL(pcibios_get_irq_routing_table);
#endif
#ifdef CONFIG_X86_USE_3DNOW
EXPORT_SYMBOL(_mmx_memcpy);
EXPORT_SYMBOL(mmx_clear_page);
EXPORT_SYMBOL(mmx_copy_page);
#endif
#ifdef CONFIG_X86_HT
EXPORT_SYMBOL(smp_num_siblings);
EXPORT_SYMBOL(cpu_sibling_map);
#endif
#ifdef CONFIG_SMP
EXPORT_SYMBOL(cpu_data);
EXPORT_SYMBOL(cpu_online_map);
EXPORT_SYMBOL(cpu_callout_map);
extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
EXPORT_SYMBOL(__write_lock_failed);
EXPORT_SYMBOL(__read_lock_failed);
/* Global SMP stuff */
EXPORT_SYMBOL(smp_call_function);
/* TLB flushing */
EXPORT_SYMBOL(flush_tlb_page);
#endif
#ifdef CONFIG_X86_IO_APIC
EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
#endif
#ifdef CONFIG_MCA
EXPORT_SYMBOL(machine_id);
#endif
#ifdef CONFIG_VT
EXPORT_SYMBOL(screen_info);
#endif
EXPORT_SYMBOL(get_wchan);
EXPORT_SYMBOL(rtc_lock);
EXPORT_SYMBOL_GPL(set_nmi_callback);
EXPORT_SYMBOL_GPL(unset_nmi_callback);
EXPORT_SYMBOL(register_die_notifier);
#ifdef CONFIG_HAVE_DEC_LOCK
EXPORT_SYMBOL(_atomic_dec_and_lock);
#endif
EXPORT_SYMBOL(__PAGE_KERNEL);
#ifdef CONFIG_HIGHMEM
EXPORT_SYMBOL(kmap);
EXPORT_SYMBOL(kunmap);
EXPORT_SYMBOL(kmap_atomic);
EXPORT_SYMBOL(kunmap_atomic);
EXPORT_SYMBOL(kmap_atomic_to_page);
#endif
#if defined(CONFIG_X86_SPEEDSTEP_SMI) || defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
EXPORT_SYMBOL(ist_info);
#endif
EXPORT_SYMBOL(csum_partial);

3
arch/i386/kernel/i387.c
View File

@ -10,6 +10,7 @@
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <asm/processor.h>
#include <asm/i387.h>
#include <asm/math_emu.h>
@ -79,6 +80,7 @@ void kernel_fpu_begin(void)
}
clts();
}
EXPORT_SYMBOL_GPL(kernel_fpu_begin);
void restore_fpu( struct task_struct *tsk )
{
@ -526,6 +528,7 @@ int dump_fpu( struct pt_regs *regs, struct user_i387_struct *fpu )
return fpvalid;
}
EXPORT_SYMBOL(dump_fpu);
int dump_task_fpu(struct task_struct *tsk, struct user_i387_struct *fpu)
{

13
arch/i386/kernel/io_apic.c
View File

@ -31,7 +31,7 @@
#include <linux/mc146818rtc.h>
#include <linux/compiler.h>
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/sysdev.h>
#include <asm/io.h>
#include <asm/smp.h>
@ -812,6 +812,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin)
}
return best_guess;
}
EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
/*
* This function currently is only a helper for the i386 smp boot process where
@ -1658,6 +1659,12 @@ static void __init setup_ioapic_ids_from_mpc(void)
unsigned char old_id;
unsigned long flags;
/*
* Don't check I/O APIC IDs for xAPIC systems. They have
* no meaning without the serial APIC bus.
*/
if (!(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && boot_cpu_data.x86 < 15))
return;
/*
* This is broken; anything with a real cpu count has to
* circumvent this idiocy regardless.
@ -1684,10 +1691,6 @@ static void __init setup_ioapic_ids_from_mpc(void)
mp_ioapics[apic].mpc_apicid = reg_00.bits.ID;
}
/* Don't check I/O APIC IDs for some xAPIC systems. They have
* no meaning without the serial APIC bus. */
if (NO_IOAPIC_CHECK)
continue;
/*
* Sanity check, is the ID really free? Every APIC in a
* system must have a unique ID or we get lots of nice

176
arch/i386/kernel/kprobes.c
View File

@ -23,6 +23,9 @@
* Rusty Russell).
* 2004-July Suparna Bhattacharya <suparna@in.ibm.com> added jumper probes
* interface to access function arguments.
* 2005-May Hien Nguyen <hien@us.ibm.com>, Jim Keniston
* <jkenisto@us.ibm.com> and Prasanna S Panchamukhi
* <prasanna@in.ibm.com> added function-return probes.
*/
#include <linux/config.h>
@ -30,15 +33,14 @@
#include <linux/ptrace.h>
#include <linux/spinlock.h>
#include <linux/preempt.h>
#include <asm/cacheflush.h>
#include <asm/kdebug.h>
#include <asm/desc.h>
/* kprobe_status settings */
#define KPROBE_HIT_ACTIVE 0x00000001
#define KPROBE_HIT_SS 0x00000002
static struct kprobe *current_kprobe;
static unsigned long kprobe_status, kprobe_old_eflags, kprobe_saved_eflags;
static struct kprobe *kprobe_prev;
static unsigned long kprobe_status_prev, kprobe_old_eflags_prev, kprobe_saved_eflags_prev;
static struct pt_regs jprobe_saved_regs;
static long *jprobe_saved_esp;
/* copy of the kernel stack at the probe fire time */
@ -68,16 +70,50 @@ int arch_prepare_kprobe(struct kprobe *p)
void arch_copy_kprobe(struct kprobe *p)
{
memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
p->opcode = *p->addr;
}
void arch_arm_kprobe(struct kprobe *p)
{
*p->addr = BREAKPOINT_INSTRUCTION;
flush_icache_range((unsigned long) p->addr,
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
void arch_disarm_kprobe(struct kprobe *p)
{
*p->addr = p->opcode;
flush_icache_range((unsigned long) p->addr,
(unsigned long) p->addr + sizeof(kprobe_opcode_t));
}
void arch_remove_kprobe(struct kprobe *p)
{
}
static inline void disarm_kprobe(struct kprobe *p, struct pt_regs *regs)
static inline void save_previous_kprobe(void)
{
*p->addr = p->opcode;
regs->eip = (unsigned long)p->addr;
kprobe_prev = current_kprobe;
kprobe_status_prev = kprobe_status;
kprobe_old_eflags_prev = kprobe_old_eflags;
kprobe_saved_eflags_prev = kprobe_saved_eflags;
}
static inline void restore_previous_kprobe(void)
{
current_kprobe = kprobe_prev;
kprobe_status = kprobe_status_prev;
kprobe_old_eflags = kprobe_old_eflags_prev;
kprobe_saved_eflags = kprobe_saved_eflags_prev;
}
static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs)
{
current_kprobe = p;
kprobe_saved_eflags = kprobe_old_eflags
= (regs->eflags & (TF_MASK | IF_MASK));
if (is_IF_modifier(p->opcode))
kprobe_saved_eflags &= ~IF_MASK;
}
static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
@ -91,6 +127,50 @@ static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
regs->eip = (unsigned long)&p->ainsn.insn;
}
struct task_struct *arch_get_kprobe_task(void *ptr)
{
return ((struct thread_info *) (((unsigned long) ptr) &
(~(THREAD_SIZE -1))))->task;
}
void arch_prepare_kretprobe(struct kretprobe *rp, struct pt_regs *regs)
{
unsigned long *sara = (unsigned long *)&regs->esp;
struct kretprobe_instance *ri;
static void *orig_ret_addr;
/*
* Save the return address when the return probe hits
* the first time, and use it to populate the (krprobe
* instance)->ret_addr for subsequent return probes at
* the same addrress since stack address would have
* the kretprobe_trampoline by then.
*/
if (((void*) *sara) != kretprobe_trampoline)
orig_ret_addr = (void*) *sara;
if ((ri = get_free_rp_inst(rp)) != NULL) {
ri->rp = rp;
ri->stack_addr = sara;
ri->ret_addr = orig_ret_addr;
add_rp_inst(ri);
/* Replace the return addr with trampoline addr */
*sara = (unsigned long) &kretprobe_trampoline;
} else {
rp->nmissed++;
}
}
void arch_kprobe_flush_task(struct task_struct *tk)
{
struct kretprobe_instance *ri;
while ((ri = get_rp_inst_tsk(tk)) != NULL) {
*((unsigned long *)(ri->stack_addr)) =
(unsigned long) ri->ret_addr;
recycle_rp_inst(ri);
}
}
/*
* Interrupts are disabled on entry as trap3 is an interrupt gate and they
* remain disabled thorough out this function.
@ -127,8 +207,18 @@ static int kprobe_handler(struct pt_regs *regs)
unlock_kprobes();
goto no_kprobe;
}
disarm_kprobe(p, regs);
ret = 1;
/* We have reentered the kprobe_handler(), since
* another probe was hit while within the handler.
* We here save the original kprobes variables and
* just single step on the instruction of the new probe
* without calling any user handlers.
*/
save_previous_kprobe();
set_current_kprobe(p, regs);
p->nmissed++;
prepare_singlestep(p, regs);
kprobe_status = KPROBE_REENTER;
return 1;
} else {
p = current_kprobe;
if (p->break_handler && p->break_handler(p, regs)) {
@ -163,11 +253,7 @@ static int kprobe_handler(struct pt_regs *regs)
}
kprobe_status = KPROBE_HIT_ACTIVE;
current_kprobe = p;
kprobe_saved_eflags = kprobe_old_eflags
= (regs->eflags & (TF_MASK | IF_MASK));
if (is_IF_modifier(p->opcode))
kprobe_saved_eflags &= ~IF_MASK;
set_current_kprobe(p, regs);
if (p->pre_handler && p->pre_handler(p, regs))
/* handler has already set things up, so skip ss setup */
@ -183,6 +269,55 @@ no_kprobe:
return ret;
}
/*
* For function-return probes, init_kprobes() establishes a probepoint
* here. When a retprobed function returns, this probe is hit and
* trampoline_probe_handler() runs, calling the kretprobe's handler.
*/
void kretprobe_trampoline_holder(void)
{
asm volatile ( ".global kretprobe_trampoline\n"
"kretprobe_trampoline: \n"
"nop\n");
}
/*
* Called when we hit the probe point at kretprobe_trampoline
*/
int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
{
struct task_struct *tsk;
struct kretprobe_instance *ri;
struct hlist_head *head;
struct hlist_node *node;
unsigned long *sara = ((unsigned long *) &regs->esp) - 1;
tsk = arch_get_kprobe_task(sara);
head = kretprobe_inst_table_head(tsk);
hlist_for_each_entry(ri, node, head, hlist) {
if (ri->stack_addr == sara && ri->rp) {
if (ri->rp->handler)
ri->rp->handler(ri, regs);
}
}
return 0;
}
void trampoline_post_handler(struct kprobe *p, struct pt_regs *regs,
unsigned long flags)
{
struct kretprobe_instance *ri;
/* RA already popped */
unsigned long *sara = ((unsigned long *)&regs->esp) - 1;
while ((ri = get_rp_inst(sara))) {
regs->eip = (unsigned long)ri->ret_addr;
recycle_rp_inst(ri);
}
regs->eflags &= ~TF_MASK;
}
/*
* Called after single-stepping. p->addr is the address of the
* instruction whose first byte has been replaced by the "int 3"
@ -263,13 +398,22 @@ static inline int post_kprobe_handler(struct pt_regs *regs)
if (!kprobe_running())
return 0;
if (current_kprobe->post_handler)
if ((kprobe_status != KPROBE_REENTER) && current_kprobe->post_handler) {
kprobe_status = KPROBE_HIT_SSDONE;
current_kprobe->post_handler(current_kprobe, regs, 0);
}
resume_execution(current_kprobe, regs);
if (current_kprobe->post_handler != trampoline_post_handler)
resume_execution(current_kprobe, regs);
regs->eflags |= kprobe_saved_eflags;
/*Restore back the original saved kprobes variables and continue. */
if (kprobe_status == KPROBE_REENTER) {
restore_previous_kprobe();
goto out;
}
unlock_kprobes();
out:
preempt_enable_no_resched();
/*

31
arch/i386/kernel/mpparse.c
View File

@ -914,7 +914,10 @@ void __init mp_register_ioapic (
mp_ioapics[idx].mpc_apicaddr = address;
set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id);
if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && (boot_cpu_data.x86 < 15))
mp_ioapics[idx].mpc_apicid = io_apic_get_unique_id(idx, id);
else
mp_ioapics[idx].mpc_apicid = id;
mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx);
/*
@ -1055,11 +1058,20 @@ void __init mp_config_acpi_legacy_irqs (void)
}
}
#define MAX_GSI_NUM 4096
int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
{
int ioapic = -1;
int ioapic_pin = 0;
int idx, bit = 0;
static int pci_irq = 16;
/*
* Mapping between Global System Interrups, which
* represent all possible interrupts, and IRQs
* assigned to actual devices.
*/
static int gsi_to_irq[MAX_GSI_NUM];
#ifdef CONFIG_ACPI_BUS
/* Don't set up the ACPI SCI because it's already set up */
@ -1094,11 +1106,26 @@ int mp_register_gsi (u32 gsi, int edge_level, int active_high_low)
if ((1<<bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) {
Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n",
mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
return gsi;
return gsi_to_irq[gsi];
}
mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit);
if (edge_level) {
/*
* For PCI devices assign IRQs in order, avoiding gaps
* due to unused I/O APIC pins.
*/
int irq = gsi;
if (gsi < MAX_GSI_NUM) {
gsi = pci_irq++;
gsi_to_irq[irq] = gsi;
} else {
printk(KERN_ERR "GSI %u is too high\n", gsi);
return gsi;
}
}
io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
edge_level == ACPI_EDGE_SENSITIVE ? 0 : 1,
active_high_low == ACPI_ACTIVE_HIGH ? 0 : 1);

24
arch/i386/kernel/nmi.c
View File

@ -28,8 +28,7 @@
#include <linux/sysctl.h>
#include <asm/smp.h>
#include <asm/mtrr.h>
#include <asm/mpspec.h>
#include <asm/div64.h>
#include <asm/nmi.h>
#include "mach_traps.h"
@ -324,6 +323,16 @@ static void clear_msr_range(unsigned int base, unsigned int n)
wrmsr(base+i, 0, 0);
}
static inline void write_watchdog_counter(const char *descr)
{
u64 count = (u64)cpu_khz * 1000;
do_div(count, nmi_hz);
if(descr)
Dprintk("setting %s to -0x%08Lx\n", descr, count);
wrmsrl(nmi_perfctr_msr, 0 - count);
}
static void setup_k7_watchdog(void)
{
unsigned int evntsel;
@ -339,8 +348,7 @@ static void setup_k7_watchdog(void)
| K7_NMI_EVENT;
wrmsr(MSR_K7_EVNTSEL0, evntsel, 0);
Dprintk("setting K7_PERFCTR0 to %08lx\n", -(cpu_khz/nmi_hz*1000));
wrmsr(MSR_K7_PERFCTR0, -(cpu_khz/nmi_hz*1000), -1);
write_watchdog_counter("K7_PERFCTR0");
apic_write(APIC_LVTPC, APIC_DM_NMI);
evntsel |= K7_EVNTSEL_ENABLE;
wrmsr(MSR_K7_EVNTSEL0, evntsel, 0);
@ -361,8 +369,7 @@ static void setup_p6_watchdog(void)
| P6_NMI_EVENT;
wrmsr(MSR_P6_EVNTSEL0, evntsel, 0);
Dprintk("setting P6_PERFCTR0 to %08lx\n", -(cpu_khz/nmi_hz*1000));
wrmsr(MSR_P6_PERFCTR0, -(cpu_khz/nmi_hz*1000), 0);
write_watchdog_counter("P6_PERFCTR0");
apic_write(APIC_LVTPC, APIC_DM_NMI);
evntsel |= P6_EVNTSEL0_ENABLE;
wrmsr(MSR_P6_EVNTSEL0, evntsel, 0);
@ -402,8 +409,7 @@ static int setup_p4_watchdog(void)
wrmsr(MSR_P4_CRU_ESCR0, P4_NMI_CRU_ESCR0, 0);
wrmsr(MSR_P4_IQ_CCCR0, P4_NMI_IQ_CCCR0 & ~P4_CCCR_ENABLE, 0);
Dprintk("setting P4_IQ_COUNTER0 to 0x%08lx\n", -(cpu_khz/nmi_hz*1000));
wrmsr(MSR_P4_IQ_COUNTER0, -(cpu_khz/nmi_hz*1000), -1);
write_watchdog_counter("P4_IQ_COUNTER0");
apic_write(APIC_LVTPC, APIC_DM_NMI);
wrmsr(MSR_P4_IQ_CCCR0, nmi_p4_cccr_val, 0);
return 1;
@ -518,7 +524,7 @@ void nmi_watchdog_tick (struct pt_regs * regs)
* other P6 variant */
apic_write(APIC_LVTPC, APIC_DM_NMI);
}
wrmsr(nmi_perfctr_msr, -(cpu_khz/nmi_hz*1000), -1);
write_watchdog_counter(NULL);
}
}

3
arch/i386/kernel/pci-dma.c
View File

@ -11,6 +11,7 @@
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <asm/io.h>
struct dma_coherent_mem {
@ -54,6 +55,7 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
}
return ret;
}
EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle)
@ -68,6 +70,7 @@ void dma_free_coherent(struct device *dev, size_t size,
} else
free_pages((unsigned long)vaddr, order);
}
EXPORT_SYMBOL(dma_free_coherent);
int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
dma_addr_t device_addr, size_t size, int flags)

36
arch/i386/kernel/process.c
View File

@ -37,6 +37,7 @@
#include <linux/kallsyms.h>
#include <linux/ptrace.h>
#include <linux/random.h>
#include <linux/kprobes.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@ -73,6 +74,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
* Powermanagement idle function, if any..
*/
void (*pm_idle)(void);
EXPORT_SYMBOL(pm_idle);
static DEFINE_PER_CPU(unsigned int, cpu_idle_state);
void disable_hlt(void)
@ -105,6 +107,9 @@ void default_idle(void)
cpu_relax();
}
}
#ifdef CONFIG_APM_MODULE
EXPORT_SYMBOL(default_idle);
#endif
/*
* On SMP it's slightly faster (but much more power-consuming!)
@ -262,7 +267,7 @@ void show_regs(struct pt_regs * regs)
printk("EIP: %04x:[<%08lx>] CPU: %d\n",0xffff & regs->xcs,regs->eip, smp_processor_id());
print_symbol("EIP is at %s\n", regs->eip);
if (regs->xcs & 3)
if (user_mode(regs))
printk(" ESP: %04x:%08lx",0xffff & regs->xss,regs->esp);
printk(" EFLAGS: %08lx %s (%s)\n",
regs->eflags, print_tainted(), system_utsname.release);
@ -325,6 +330,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
/* Ok, create the new process.. */
return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
}
EXPORT_SYMBOL(kernel_thread);
/*
* Free current thread data structures etc..
@ -334,6 +340,13 @@ void exit_thread(void)
struct task_struct *tsk = current;
struct thread_struct *t = &tsk->thread;
/*
* Remove function-return probe instances associated with this task
* and put them back on the free list. Do not insert an exit probe for
* this function, it will be disabled by kprobe_flush_task if you do.
*/
kprobe_flush_task(tsk);
/* The process may have allocated an io port bitmap... nuke it. */
if (unlikely(NULL != t->io_bitmap_ptr)) {
int cpu = get_cpu();
@ -357,6 +370,13 @@ void flush_thread(void)
{
struct task_struct *tsk = current;
/*
* Remove function-return probe instances associated with this task
* and put them back on the free list. Do not insert an exit probe for
* this function, it will be disabled by kprobe_flush_task if you do.
*/
kprobe_flush_task(tsk);
memset(tsk->thread.debugreg, 0, sizeof(unsigned long)*8);
memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
/*
@ -508,6 +528,7 @@ void dump_thread(struct pt_regs * regs, struct user * dump)
dump->u_fpvalid = dump_fpu (regs, &dump->i387);
}
EXPORT_SYMBOL(dump_thread);
/*
* Capture the user space registers if the task is not running (in user space)
@ -627,13 +648,13 @@ struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct tas
* Now maybe reload the debug registers
*/
if (unlikely(next->debugreg[7])) {
loaddebug(next, 0);
loaddebug(next, 1);
loaddebug(next, 2);
loaddebug(next, 3);
set_debugreg(current->thread.debugreg[0], 0);
set_debugreg(current->thread.debugreg[1], 1);
set_debugreg(current->thread.debugreg[2], 2);
set_debugreg(current->thread.debugreg[3], 3);
/* no 4 and 5 */
loaddebug(next, 6);
loaddebug(next, 7);
set_debugreg(current->thread.debugreg[6], 6);
set_debugreg(current->thread.debugreg[7], 7);
}
if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr))
@ -731,6 +752,7 @@ unsigned long get_wchan(struct task_struct *p)
} while (count++ < 16);
return 0;
}
EXPORT_SYMBOL(get_wchan);
/*
* sys_alloc_thread_area: get a yet unused TLS descriptor index.

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

@ -668,7 +668,7 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
info.si_code = TRAP_BRKPT;
/* User-mode eip? */
info.si_addr = user_mode(regs) ? (void __user *) regs->eip : NULL;
info.si_addr = user_mode_vm(regs) ? (void __user *) regs->eip : NULL;
/* Send us the fakey SIGTRAP */
force_sig_info(SIGTRAP, &info, tsk);

5
arch/i386/kernel/reboot.c
View File

@ -2,6 +2,7 @@
* linux/arch/i386/kernel/reboot.c
*/
#include <linux/config.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/delay.h>
@ -19,6 +20,7 @@
* Power off function, if any
*/
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
static int reboot_mode;
static int reboot_thru_bios;
@ -295,6 +297,9 @@ void machine_real_restart(unsigned char *code, int length)
:
: "i" ((void *) (0x1000 - sizeof (real_mode_switch) - 100)));
}
#ifdef CONFIG_APM_MODULE
EXPORT_SYMBOL(machine_real_restart);
#endif
void machine_restart(char * __unused)
{

28
arch/i386/kernel/setup.c
View File

@ -23,8 +23,10 @@
* This file handles the architecture-dependent parts of initialization
*/
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/acpi.h>
@ -73,6 +75,7 @@ EXPORT_SYMBOL(efi_enabled);
struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
/* common cpu data for all cpus */
struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
EXPORT_SYMBOL(boot_cpu_data);
unsigned long mmu_cr4_features;
@ -90,12 +93,18 @@ extern acpi_interrupt_flags acpi_sci_flags;
/* for MCA, but anyone else can use it if they want */
unsigned int machine_id;
#ifdef CONFIG_MCA
EXPORT_SYMBOL(machine_id);
#endif
unsigned int machine_submodel_id;
unsigned int BIOS_revision;
unsigned int mca_pentium_flag;
/* For PCI or other memory-mapped resources */
unsigned long pci_mem_start = 0x10000000;
#ifdef CONFIG_PCI
EXPORT_SYMBOL(pci_mem_start);
#endif
/* Boot loader ID as an integer, for the benefit of proc_dointvec */
int bootloader_type;
@ -107,14 +116,26 @@ static unsigned int highmem_pages = -1;
* Setup options
*/
struct drive_info_struct { char dummy[32]; } drive_info;
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || \
defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
EXPORT_SYMBOL(drive_info);
#endif
struct screen_info screen_info;
#ifdef CONFIG_VT
EXPORT_SYMBOL(screen_info);
#endif
struct apm_info apm_info;
EXPORT_SYMBOL(apm_info);
struct sys_desc_table_struct {
unsigned short length;
unsigned char table[0];
};
struct edid_info edid_info;
struct ist_info ist_info;
#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
EXPORT_SYMBOL(ist_info);
#endif
struct e820map e820;
extern void early_cpu_init(void);
@ -1022,7 +1043,7 @@ static void __init reserve_ebda_region(void)
reserve_bootmem(addr, PAGE_SIZE);
}
#ifndef CONFIG_DISCONTIGMEM
#ifndef CONFIG_NEED_MULTIPLE_NODES
void __init setup_bootmem_allocator(void);
static unsigned long __init setup_memory(void)
{
@ -1072,9 +1093,9 @@ void __init zone_sizes_init(void)
free_area_init(zones_size);
}
#else
extern unsigned long setup_memory(void);
extern unsigned long __init setup_memory(void);
extern void zone_sizes_init(void);
#endif /* !CONFIG_DISCONTIGMEM */
#endif /* !CONFIG_NEED_MULTIPLE_NODES */
void __init setup_bootmem_allocator(void)
{
@ -1475,6 +1496,7 @@ void __init setup_arch(char **cmdline_p)
#endif
paging_init();
remapped_pgdat_init();
sparse_init();
zone_sizes_init();
/*

31
arch/i386/kernel/signal.c
View File

@ -346,8 +346,8 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
extern void __user __kernel_sigreturn;
extern void __user __kernel_rt_sigreturn;
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 pt_regs * regs)
{
void __user *restorer;
struct sigframe __user *frame;
@ -429,13 +429,14 @@ static void setup_frame(int sig, struct k_sigaction *ka,
current->comm, current->pid, frame, regs->eip, frame->pretcode);
#endif
return;
return 1;
give_sigsegv:
force_sigsegv(sig, current);
return 0;
}
static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs * regs)
{
void __user *restorer;
@ -522,20 +523,23 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
current->comm, current->pid, frame, regs->eip, frame->pretcode);
#endif
return;
return 1;
give_sigsegv:
force_sigsegv(sig, current);
return 0;
}
/*
* OK, we're invoking a handler
*/
static void
static int
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
sigset_t *oldset, struct pt_regs * regs)
{
int ret;
/* Are we from a system call? */
if (regs->orig_eax >= 0) {
/* If so, check system call restarting.. */
@ -569,17 +573,19 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
/* 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, regs);
else
setup_frame(sig, ka, oldset, regs);
ret = setup_frame(sig, ka, oldset, regs);
if (!(ka->sa.sa_flags & SA_NODEFER)) {
if (ret && !(ka->sa.sa_flags & SA_NODEFER)) {
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
sigaddset(&current->blocked,sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
}
return ret;
}
/*
@ -599,7 +605,7 @@ int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset)
* kernel mode. Just return without doing anything
* if so.
*/
if ((regs->xcs & 3) != 3)
if (!user_mode(regs))
return 1;
if (current->flags & PF_FREEZE) {
@ -618,12 +624,11 @@ int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset)
* inside the kernel.
*/
if (unlikely(current->thread.debugreg[7])) {
loaddebug(&current->thread, 7);
set_debugreg(current->thread.debugreg[7], 7);
}
/* Whee! Actually deliver the signal. */
handle_signal(signr, &info, &ka, oldset, regs);
return 1;
return handle_signal(signr, &info, &ka, oldset, regs);
}
no_signal:

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

@ -19,6 +19,7 @@
#include <linux/mc146818rtc.h>
#include <linux/cache.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <asm/mtrr.h>
#include <asm/tlbflush.h>
@ -452,6 +453,7 @@ void flush_tlb_page(struct vm_area_struct * vma, unsigned long va)
preempt_enable();
}
EXPORT_SYMBOL(flush_tlb_page);
static void do_flush_tlb_all(void* info)
{
@ -547,6 +549,7 @@ int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
return 0;
}
EXPORT_SYMBOL(smp_call_function);
static void stop_this_cpu (void * dummy)
{

14
arch/i386/kernel/smpboot.c
View File

@ -60,6 +60,9 @@ static int __initdata smp_b_stepping;
/* Number of siblings per CPU package */
int smp_num_siblings = 1;
#ifdef CONFIG_X86_HT
EXPORT_SYMBOL(smp_num_siblings);
#endif
int phys_proc_id[NR_CPUS]; /* Package ID of each logical CPU */
EXPORT_SYMBOL(phys_proc_id);
int cpu_core_id[NR_CPUS]; /* Core ID of each logical CPU */
@ -67,13 +70,16 @@ EXPORT_SYMBOL(cpu_core_id);
/* bitmap of online cpus */
cpumask_t cpu_online_map;
EXPORT_SYMBOL(cpu_online_map);
cpumask_t cpu_callin_map;
cpumask_t cpu_callout_map;
EXPORT_SYMBOL(cpu_callout_map);
static cpumask_t smp_commenced_mask;
/* Per CPU bogomips and other parameters */
struct cpuinfo_x86 cpu_data[NR_CPUS] __cacheline_aligned;
EXPORT_SYMBOL(cpu_data);
u8 x86_cpu_to_apicid[NR_CPUS] =
{ [0 ... NR_CPUS-1] = 0xff };
@ -199,7 +205,7 @@ static void __init synchronize_tsc_bp (void)
unsigned long long t0;
unsigned long long sum, avg;
long long delta;
unsigned long one_usec;
unsigned int one_usec;
int buggy = 0;
printk(KERN_INFO "checking TSC synchronization across %u CPUs: ", num_booting_cpus());
@ -885,8 +891,14 @@ static void smp_tune_scheduling (void)
static int boot_cpu_logical_apicid;
/* Where the IO area was mapped on multiquad, always 0 otherwise */
void *xquad_portio;
#ifdef CONFIG_X86_NUMAQ
EXPORT_SYMBOL(xquad_portio);
#endif
cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
#ifdef CONFIG_X86_HT
EXPORT_SYMBOL(cpu_sibling_map);
#endif
cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
EXPORT_SYMBOL(cpu_core_map);

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

@ -77,11 +77,13 @@ u64 jiffies_64 = INITIAL_JIFFIES;
EXPORT_SYMBOL(jiffies_64);
unsigned long cpu_khz; /* Detected as we calibrate the TSC */
unsigned int cpu_khz; /* Detected as we calibrate the TSC */
EXPORT_SYMBOL(cpu_khz);
extern unsigned long wall_jiffies;
DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL(rtc_lock);
DEFINE_SPINLOCK(i8253_lock);
EXPORT_SYMBOL(i8253_lock);
@ -324,6 +326,8 @@ unsigned long get_cmos_time(void)
return retval;
}
EXPORT_SYMBOL(get_cmos_time);
static void sync_cmos_clock(unsigned long dummy);
static struct timer_list sync_cmos_timer =

12
arch/i386/kernel/timers/common.c
View File

@ -139,6 +139,15 @@ bad_calibration:
}
#endif
unsigned long read_timer_tsc(void)
{
unsigned long retval;
rdtscl(retval);
return retval;
}
/* calculate cpu_khz */
void init_cpu_khz(void)
{
@ -154,7 +163,8 @@ void init_cpu_khz(void)
:"=a" (cpu_khz), "=d" (edx)
:"r" (tsc_quotient),
"0" (eax), "1" (edx));
printk("Detected %lu.%03lu MHz processor.\n", cpu_khz / 1000, cpu_khz % 1000);
printk("Detected %u.%03u MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
}
}
}

9
arch/i386/kernel/timers/timer.c
View File

@ -64,3 +64,12 @@ struct timer_opts* __init select_timer(void)
panic("select_timer: Cannot find a suitable timer\n");
return NULL;
}
int read_current_timer(unsigned long *timer_val)
{
if (cur_timer->read_timer) {
*timer_val = cur_timer->read_timer();
return 0;
}
return -1;
}

3
arch/i386/kernel/timers/timer_hpet.c
View File

@ -158,7 +158,7 @@ static int __init init_hpet(char* override)
{ unsigned long eax=0, edx=1000;
ASM_DIV64_REG(cpu_khz, edx, tsc_quotient,
eax, edx);
printk("Detected %lu.%03lu MHz processor.\n",
printk("Detected %u.%03u MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
}
set_cyc2ns_scale(cpu_khz/1000);
@ -186,6 +186,7 @@ static struct timer_opts timer_hpet = {
.get_offset = get_offset_hpet,
.monotonic_clock = monotonic_clock_hpet,
.delay = delay_hpet,
.read_timer = read_timer_tsc,
};
struct init_timer_opts __initdata timer_hpet_init = {

1
arch/i386/kernel/timers/timer_pm.c
View File

@ -246,6 +246,7 @@ static struct timer_opts timer_pmtmr = {
.get_offset = get_offset_pmtmr,
.monotonic_clock = monotonic_clock_pmtmr,
.delay = delay_pmtmr,
.read_timer = read_timer_tsc,
};
struct init_timer_opts __initdata timer_pmtmr_init = {

8
arch/i386/kernel/timers/timer_tsc.c
View File

@ -256,7 +256,7 @@ static unsigned long loops_per_jiffy_ref = 0;
#ifndef CONFIG_SMP
static unsigned long fast_gettimeoffset_ref = 0;
static unsigned long cpu_khz_ref = 0;
static unsigned int cpu_khz_ref = 0;
#endif
static int
@ -323,7 +323,7 @@ static inline void cpufreq_delayed_get(void) { return; }
int recalibrate_cpu_khz(void)
{
#ifndef CONFIG_SMP
unsigned long cpu_khz_old = cpu_khz;
unsigned int cpu_khz_old = cpu_khz;
if (cpu_has_tsc) {
init_cpu_khz();
@ -534,7 +534,8 @@ static int __init init_tsc(char* override)
:"=a" (cpu_khz), "=d" (edx)
:"r" (tsc_quotient),
"0" (eax), "1" (edx));
printk("Detected %lu.%03lu MHz processor.\n", cpu_khz / 1000, cpu_khz % 1000);
printk("Detected %u.%03u MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
}
set_cyc2ns_scale(cpu_khz/1000);
return 0;
@ -572,6 +573,7 @@ static struct timer_opts timer_tsc = {
.get_offset = get_offset_tsc,
.monotonic_clock = monotonic_clock_tsc,
.delay = delay_tsc,
.read_timer = read_timer_tsc,
};
struct init_timer_opts __initdata timer_tsc_init = {

21
arch/i386/kernel/traps.c
View File

@ -104,6 +104,7 @@ int register_die_notifier(struct notifier_block *nb)
spin_unlock_irqrestore(&die_notifier_lock, flags);
return err;
}
EXPORT_SYMBOL(register_die_notifier);
static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
{
@ -209,7 +210,7 @@ void show_registers(struct pt_regs *regs)
esp = (unsigned long) (&regs->esp);
ss = __KERNEL_DS;
if (regs->xcs & 3) {
if (user_mode(regs)) {
in_kernel = 0;
esp = regs->esp;
ss = regs->xss & 0xffff;
@ -265,7 +266,7 @@ static void handle_BUG(struct pt_regs *regs)
char c;
unsigned long eip;
if (regs->xcs & 3)
if (user_mode(regs))
goto no_bug; /* Not in kernel */
eip = regs->eip;
@ -353,7 +354,7 @@ void die(const char * str, struct pt_regs * regs, long err)
static inline void die_if_kernel(const char * str, struct pt_regs * regs, long err)
{
if (!(regs->eflags & VM_MASK) && !(3 & regs->xcs))
if (!user_mode_vm(regs))
die(str, regs, err);
}
@ -366,7 +367,7 @@ static void do_trap(int trapnr, int signr, char *str, int vm86,
goto trap_signal;
}
if (!(regs->xcs & 3))
if (!user_mode(regs))
goto kernel_trap;
trap_signal: {
@ -488,7 +489,7 @@ fastcall void do_general_protection(struct pt_regs * regs, long error_code)
if (regs->eflags & VM_MASK)
goto gp_in_vm86;
if (!(regs->xcs & 3))
if (!user_mode(regs))
goto gp_in_kernel;
current->thread.error_code = error_code;
@ -636,11 +637,13 @@ void set_nmi_callback(nmi_callback_t callback)
{
nmi_callback = callback;
}
EXPORT_SYMBOL_GPL(set_nmi_callback);
void unset_nmi_callback(void)
{
nmi_callback = dummy_nmi_callback;
}
EXPORT_SYMBOL_GPL(unset_nmi_callback);
#ifdef CONFIG_KPROBES
fastcall void do_int3(struct pt_regs *regs, long error_code)
@ -682,7 +685,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code)
unsigned int condition;
struct task_struct *tsk = current;
__asm__ __volatile__("movl %%db6,%0" : "=r" (condition));
get_debugreg(condition, 6);
if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,
SIGTRAP) == NOTIFY_STOP)
@ -713,7 +716,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code)
* check for kernel mode by just checking the CPL
* of CS.
*/
if ((regs->xcs & 3) == 0)
if (!user_mode(regs))
goto clear_TF_reenable;
}
@ -724,9 +727,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code)
* the signal is delivered.
*/
clear_dr7:
__asm__("movl %0,%%db7"
: /* no output */
: "r" (0));
set_debugreg(0, 7);
return;
debug_vm86:

2
arch/i386/lib/dec_and_lock.c
View File

@ -8,6 +8,7 @@
*/
#include <linux/spinlock.h>
#include <linux/module.h>
#include <asm/atomic.h>
int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock)
@ -38,3 +39,4 @@ slow_path:
spin_unlock(lock);
return 0;
}
EXPORT_SYMBOL(_atomic_dec_and_lock);

6
arch/i386/lib/delay.c
View File

@ -13,6 +13,7 @@
#include <linux/config.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <asm/processor.h>
#include <asm/delay.h>
#include <asm/timer.h>
@ -47,3 +48,8 @@ void __ndelay(unsigned long nsecs)
{
__const_udelay(nsecs * 0x00005); /* 2**32 / 1000000000 (rounded up) */
}
EXPORT_SYMBOL(__delay);
EXPORT_SYMBOL(__const_udelay);
EXPORT_SYMBOL(__udelay);
EXPORT_SYMBOL(__ndelay);

5
arch/i386/lib/mmx.c
View File

@ -3,6 +3,7 @@
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/hardirq.h>
#include <linux/module.h>
#include <asm/i387.h>
@ -397,3 +398,7 @@ void mmx_copy_page(void *to, void *from)
else
fast_copy_page(to, from);
}
EXPORT_SYMBOL(_mmx_memcpy);
EXPORT_SYMBOL(mmx_clear_page);
EXPORT_SYMBOL(mmx_copy_page);

8
arch/i386/lib/usercopy.c
View File

@ -84,6 +84,7 @@ __strncpy_from_user(char *dst, const char __user *src, long count)
__do_strncpy_from_user(dst, src, count, res);
return res;
}
EXPORT_SYMBOL(__strncpy_from_user);
/**
* strncpy_from_user: - Copy a NUL terminated string from userspace.
@ -111,7 +112,7 @@ strncpy_from_user(char *dst, const char __user *src, long count)
__do_strncpy_from_user(dst, src, count, res);
return res;
}
EXPORT_SYMBOL(strncpy_from_user);
/*
* Zero Userspace
@ -157,6 +158,7 @@ clear_user(void __user *to, unsigned long n)
__do_clear_user(to, n);
return n;
}
EXPORT_SYMBOL(clear_user);
/**
* __clear_user: - Zero a block of memory in user space, with less checking.
@ -175,6 +177,7 @@ __clear_user(void __user *to, unsigned long n)
__do_clear_user(to, n);
return n;
}
EXPORT_SYMBOL(__clear_user);
/**
* strlen_user: - Get the size of a string in user space.
@ -218,6 +221,7 @@ long strnlen_user(const char __user *s, long n)
:"cc");
return res & mask;
}
EXPORT_SYMBOL(strnlen_user);
#ifdef CONFIG_X86_INTEL_USERCOPY
static unsigned long
@ -570,6 +574,7 @@ survive:
n = __copy_user_intel(to, from, n);
return n;
}
EXPORT_SYMBOL(__copy_to_user_ll);
unsigned long
__copy_from_user_ll(void *to, const void __user *from, unsigned long n)
@ -581,6 +586,7 @@ __copy_from_user_ll(void *to, const void __user *from, unsigned long n)
n = __copy_user_zeroing_intel(to, from, n);
return n;
}
EXPORT_SYMBOL(__copy_from_user_ll);
/**
* copy_to_user: - Copy a block of data into user space.

2
arch/i386/mach-voyager/voyager_smp.c
View File

@ -1288,7 +1288,7 @@ smp_local_timer_interrupt(struct pt_regs * regs)
per_cpu(prof_counter, cpu);
}
update_process_times(user_mode(regs));
update_process_times(user_mode_vm(regs));
}
if( ((1<<cpu) & voyager_extended_vic_processors) == 0)

2
arch/i386/mm/Makefile
View File

@ -4,7 +4,7 @@
obj-y := init.o pgtable.o fault.o ioremap.o extable.o pageattr.o mmap.o
obj-$(CONFIG_DISCONTIGMEM) += discontig.o
obj-$(CONFIG_NUMA) += discontig.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_HIGHMEM) += highmem.o
obj-$(CONFIG_BOOT_IOREMAP) += boot_ioremap.o

127
arch/i386/mm/discontig.c
View File

@ -29,12 +29,14 @@
#include <linux/highmem.h>
#include <linux/initrd.h>
#include <linux/nodemask.h>
#include <linux/module.h>
#include <asm/e820.h>
#include <asm/setup.h>
#include <asm/mmzone.h>
#include <bios_ebda.h>
struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(node_data);
bootmem_data_t node0_bdata;
/*
@ -42,12 +44,16 @@ bootmem_data_t node0_bdata;
* populated the following initialisation.
*
* 1) node_online_map - the map of all nodes configured (online) in the system
* 2) physnode_map - the mapping between a pfn and owning node
* 3) node_start_pfn - the starting page frame number for a node
* 2) node_start_pfn - the starting page frame number for a node
* 3) node_end_pfn - the ending page fram number for a node
*/
unsigned long node_start_pfn[MAX_NUMNODES];
unsigned long node_end_pfn[MAX_NUMNODES];
#ifdef CONFIG_DISCONTIGMEM
/*
* 4) physnode_map - the mapping between a pfn and owning node
* physnode_map keeps track of the physical memory layout of a generic
* numa node on a 256Mb break (each element of the array will
* represent 256Mb of memory and will be marked by the node id. so,
@ -59,6 +65,7 @@ bootmem_data_t node0_bdata;
* physnode_map[8- ] = -1;
*/
s8 physnode_map[MAX_ELEMENTS] = { [0 ... (MAX_ELEMENTS - 1)] = -1};
EXPORT_SYMBOL(physnode_map);
void memory_present(int nid, unsigned long start, unsigned long end)
{
@ -85,9 +92,7 @@ unsigned long node_memmap_size_bytes(int nid, unsigned long start_pfn,
return (nr_pages + 1) * sizeof(struct page);
}
unsigned long node_start_pfn[MAX_NUMNODES];
unsigned long node_end_pfn[MAX_NUMNODES];
#endif
extern unsigned long find_max_low_pfn(void);
extern void find_max_pfn(void);
@ -108,6 +113,9 @@ unsigned long node_remap_offset[MAX_NUMNODES];
void *node_remap_start_vaddr[MAX_NUMNODES];
void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
void *node_remap_end_vaddr[MAX_NUMNODES];
void *node_remap_alloc_vaddr[MAX_NUMNODES];
/*
* FLAT - support for basic PC memory model with discontig enabled, essentially
* a single node with all available processors in it with a flat
@ -146,6 +154,21 @@ static void __init find_max_pfn_node(int nid)
BUG();
}
/* Find the owning node for a pfn. */
int early_pfn_to_nid(unsigned long pfn)
{
int nid;
for_each_node(nid) {
if (node_end_pfn[nid] == 0)
break;
if (node_start_pfn[nid] <= pfn && node_end_pfn[nid] >= pfn)
return nid;
}
return 0;
}
/*
* Allocate memory for the pg_data_t for this node via a crude pre-bootmem
* method. For node zero take this from the bottom of memory, for
@ -163,6 +186,21 @@ static void __init allocate_pgdat(int nid)
}
}
void *alloc_remap(int nid, unsigned long size)
{
void *allocation = node_remap_alloc_vaddr[nid];
size = ALIGN(size, L1_CACHE_BYTES);
if (!allocation || (allocation + size) >= node_remap_end_vaddr[nid])
return 0;
node_remap_alloc_vaddr[nid] += size;
memset(allocation, 0, size);
return allocation;
}
void __init remap_numa_kva(void)
{
void *vaddr;
@ -170,8 +208,6 @@ void __init remap_numa_kva(void)
int node;
for_each_online_node(node) {
if (node == 0)
continue;
for (pfn=0; pfn < node_remap_size[node]; pfn += PTRS_PER_PTE) {
vaddr = node_remap_start_vaddr[node]+(pfn<<PAGE_SHIFT);
set_pmd_pfn((ulong) vaddr,
@ -185,13 +221,9 @@ static unsigned long calculate_numa_remap_pages(void)
{
int nid;
unsigned long size, reserve_pages = 0;
unsigned long pfn;
for_each_online_node(nid) {
if (nid == 0)
continue;
if (!node_remap_size[nid])
continue;
/*
* The acpi/srat node info can show hot-add memroy zones
* where memory could be added but not currently present.
@ -208,11 +240,24 @@ static unsigned long calculate_numa_remap_pages(void)
size = (size + LARGE_PAGE_BYTES - 1) / LARGE_PAGE_BYTES;
/* now the roundup is correct, convert to PAGE_SIZE pages */
size = size * PTRS_PER_PTE;
/*
* Validate the region we are allocating only contains valid
* pages.
*/
for (pfn = node_end_pfn[nid] - size;
pfn < node_end_pfn[nid]; pfn++)
if (!page_is_ram(pfn))
break;
if (pfn != node_end_pfn[nid])
size = 0;
printk("Reserving %ld pages of KVA for lmem_map of node %d\n",
size, nid);
node_remap_size[nid] = size;
reserve_pages += size;
node_remap_offset[nid] = reserve_pages;
reserve_pages += size;
printk("Shrinking node %d from %ld pages to %ld pages\n",
nid, node_end_pfn[nid], node_end_pfn[nid] - size);
node_end_pfn[nid] -= size;
@ -265,12 +310,18 @@ unsigned long __init setup_memory(void)
(ulong) pfn_to_kaddr(max_low_pfn));
for_each_online_node(nid) {
node_remap_start_vaddr[nid] = pfn_to_kaddr(
(highstart_pfn + reserve_pages) - node_remap_offset[nid]);
highstart_pfn + node_remap_offset[nid]);
/* Init the node remap allocator */
node_remap_end_vaddr[nid] = node_remap_start_vaddr[nid] +
(node_remap_size[nid] * PAGE_SIZE);
node_remap_alloc_vaddr[nid] = node_remap_start_vaddr[nid] +
ALIGN(sizeof(pg_data_t), PAGE_SIZE);
allocate_pgdat(nid);
printk ("node %d will remap to vaddr %08lx - %08lx\n", nid,
(ulong) node_remap_start_vaddr[nid],
(ulong) pfn_to_kaddr(highstart_pfn + reserve_pages
- node_remap_offset[nid] + node_remap_size[nid]));
(ulong) pfn_to_kaddr(highstart_pfn
+ node_remap_offset[nid] + node_remap_size[nid]));
}
printk("High memory starts at vaddr %08lx\n",
(ulong) pfn_to_kaddr(highstart_pfn));
@ -333,23 +384,9 @@ void __init zone_sizes_init(void)
}
zholes_size = get_zholes_size(nid);
/*
* We let the lmem_map for node 0 be allocated from the
* normal bootmem allocator, but other nodes come from the
* remapped KVA area - mbligh
*/
if (!nid)
free_area_init_node(nid, NODE_DATA(nid),
zones_size, start, zholes_size);
else {
unsigned long lmem_map;
lmem_map = (unsigned long)node_remap_start_vaddr[nid];
lmem_map += sizeof(pg_data_t) + PAGE_SIZE - 1;
lmem_map &= PAGE_MASK;
NODE_DATA(nid)->node_mem_map = (struct page *)lmem_map;
free_area_init_node(nid, NODE_DATA(nid), zones_size,
start, zholes_size);
}
free_area_init_node(nid, NODE_DATA(nid), zones_size, start,
zholes_size);
}
return;
}
@ -358,24 +395,26 @@ void __init set_highmem_pages_init(int bad_ppro)
{
#ifdef CONFIG_HIGHMEM
struct zone *zone;
struct page *page;
for_each_zone(zone) {
unsigned long node_pfn, node_high_size, zone_start_pfn;
struct page * zone_mem_map;
unsigned long node_pfn, zone_start_pfn, zone_end_pfn;
if (!is_highmem(zone))
continue;
printk("Initializing %s for node %d\n", zone->name,
zone->zone_pgdat->node_id);
node_high_size = zone->spanned_pages;
zone_mem_map = zone->zone_mem_map;
zone_start_pfn = zone->zone_start_pfn;
zone_end_pfn = zone_start_pfn + zone->spanned_pages;
for (node_pfn = 0; node_pfn < node_high_size; node_pfn++) {
one_highpage_init((struct page *)(zone_mem_map + node_pfn),
zone_start_pfn + node_pfn, bad_ppro);
printk("Initializing %s for node %d (%08lx:%08lx)\n",
zone->name, zone->zone_pgdat->node_id,
zone_start_pfn, zone_end_pfn);
for (node_pfn = zone_start_pfn; node_pfn < zone_end_pfn; node_pfn++) {
if (!pfn_valid(node_pfn))
continue;
page = pfn_to_page(node_pfn);
one_highpage_init(page, node_pfn, bad_ppro);
}
}
totalram_pages += totalhigh_pages;

6
arch/i386/mm/highmem.c
View File

@ -1,4 +1,5 @@
#include <linux/highmem.h>
#include <linux/module.h>
void *kmap(struct page *page)
{
@ -87,3 +88,8 @@ struct page *kmap_atomic_to_page(void *ptr)
return pte_page(*pte);
}
EXPORT_SYMBOL(kmap);
EXPORT_SYMBOL(kunmap);
EXPORT_SYMBOL(kmap_atomic);
EXPORT_SYMBOL(kunmap_atomic);
EXPORT_SYMBOL(kmap_atomic_to_page);

21
arch/i386/mm/init.c
View File

@ -191,7 +191,7 @@ static inline int page_kills_ppro(unsigned long pagenr)
extern int is_available_memory(efi_memory_desc_t *);
static inline int page_is_ram(unsigned long pagenr)
int page_is_ram(unsigned long pagenr)
{
int i;
unsigned long addr, end;
@ -276,7 +276,9 @@ void __init one_highpage_init(struct page *page, int pfn, int bad_ppro)
SetPageReserved(page);
}
#ifndef CONFIG_DISCONTIGMEM
#ifdef CONFIG_NUMA
extern void set_highmem_pages_init(int);
#else
static void __init set_highmem_pages_init(int bad_ppro)
{
int pfn;
@ -284,9 +286,7 @@ static void __init set_highmem_pages_init(int bad_ppro)
one_highpage_init(pfn_to_page(pfn), pfn, bad_ppro);
totalram_pages += totalhigh_pages;
}
#else
extern void set_highmem_pages_init(int);
#endif /* !CONFIG_DISCONTIGMEM */
#endif /* CONFIG_FLATMEM */
#else
#define kmap_init() do { } while (0)
@ -295,12 +295,13 @@ extern void set_highmem_pages_init(int);
#endif /* CONFIG_HIGHMEM */
unsigned long long __PAGE_KERNEL = _PAGE_KERNEL;
EXPORT_SYMBOL(__PAGE_KERNEL);
unsigned long long __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC;
#ifndef CONFIG_DISCONTIGMEM
#define remap_numa_kva() do {} while (0)
#else
#ifdef CONFIG_NUMA
extern void __init remap_numa_kva(void);
#else
#define remap_numa_kva() do {} while (0)
#endif
static void __init pagetable_init (void)
@ -525,7 +526,7 @@ static void __init set_max_mapnr_init(void)
#else
num_physpages = max_low_pfn;
#endif
#ifndef CONFIG_DISCONTIGMEM
#ifdef CONFIG_FLATMEM
max_mapnr = num_physpages;
#endif
}
@ -539,7 +540,7 @@ void __init mem_init(void)
int tmp;
int bad_ppro;
#ifndef CONFIG_DISCONTIGMEM
#ifdef CONFIG_FLATMEM
if (!mem_map)
BUG();
#endif

5
arch/i386/mm/ioremap.c
View File

@ -11,6 +11,7 @@
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <asm/io.h>
#include <asm/fixmap.h>
#include <asm/cacheflush.h>
@ -165,7 +166,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
}
return (void __iomem *) (offset + (char __iomem *)addr);
}
EXPORT_SYMBOL(__ioremap);
/**
* ioremap_nocache - map bus memory into CPU space
@ -222,6 +223,7 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
return p;
}
EXPORT_SYMBOL(ioremap_nocache);
void iounmap(volatile void __iomem *addr)
{
@ -255,6 +257,7 @@ out_unlock:
write_unlock(&vmlist_lock);
kfree(p);
}
EXPORT_SYMBOL(iounmap);
void __init *bt_ioremap(unsigned long phys_addr, unsigned long size)
{

10
arch/i386/mm/pgtable.c
View File

@ -30,13 +30,14 @@ void show_mem(void)
struct page *page;
pg_data_t *pgdat;
unsigned long i;
struct page_state ps;
printk("Mem-info:\n");
show_free_areas();
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
for_each_pgdat(pgdat) {
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
page = pgdat->node_mem_map + i;
page = pgdat_page_nr(pgdat, i);
total++;
if (PageHighMem(page))
highmem++;
@ -53,6 +54,13 @@ void show_mem(void)
printk("%d reserved pages\n",reserved);
printk("%d pages shared\n",shared);
printk("%d pages swap cached\n",cached);
get_page_state(&ps);
printk("%lu pages dirty\n", ps.nr_dirty);
printk("%lu pages writeback\n", ps.nr_writeback);
printk("%lu pages mapped\n", ps.nr_mapped);
printk("%lu pages slab\n", ps.nr_slab);
printk("%lu pages pagetables\n", ps.nr_page_table_pages);
}
/*

2
arch/i386/oprofile/backtrace.c
View File

@ -91,7 +91,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth)
head = (struct frame_head *)regs->ebp;
#endif
if (!user_mode(regs)) {
if (!user_mode_vm(regs)) {
while (depth-- && valid_kernel_stack(head, regs))
head = dump_backtrace(head);
return;

22
arch/i386/pci/irq.c
View File

@ -226,6 +226,24 @@ static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq, i
return 1;
}
/*
* The VIA pirq rules are nibble-based, like ALI,
* but without the ugly irq number munging.
* However, for 82C586, nibble map is different .
*/
static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
{
static unsigned int pirqmap[4] = { 3, 2, 5, 1 };
return read_config_nybble(router, 0x55, pirqmap[pirq-1]);
}
static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
{
static unsigned int pirqmap[4] = { 3, 2, 5, 1 };
write_config_nybble(router, 0x55, pirqmap[pirq-1], irq);
return 1;
}
/*
* ITE 8330G pirq rules are nibble-based
* FIXME: pirqmap may be { 1, 0, 3, 2 },
@ -512,6 +530,10 @@ static __init int via_router_probe(struct irq_router *r, struct pci_dev *router,
switch(device)
{
case PCI_DEVICE_ID_VIA_82C586_0:
r->name = "VIA";
r->get = pirq_via586_get;
r->set = pirq_via586_set;
return 1;
case PCI_DEVICE_ID_VIA_82C596:
case PCI_DEVICE_ID_VIA_82C686:
case PCI_DEVICE_ID_VIA_8231:

4
arch/i386/pci/pcbios.c
View File

@ -4,6 +4,7 @@
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/module.h>
#include "pci.h"
#include "pci-functions.h"
@ -456,7 +457,7 @@ struct irq_routing_table * __devinit pcibios_get_irq_routing_table(void)
free_page(page);
return rt;
}
EXPORT_SYMBOL(pcibios_get_irq_routing_table);
int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
{
@ -473,6 +474,7 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
"S" (&pci_indirect));
return !(ret & 0xff00);
}
EXPORT_SYMBOL(pcibios_set_irq_routing);
static int __init pci_pcbios_init(void)
{

14
arch/i386/power/cpu.c
View File

@ -94,13 +94,13 @@ static void fix_processor_context(void)
* Now maybe reload the debug registers
*/
if (current->thread.debugreg[7]){
loaddebug(&current->thread, 0);
loaddebug(&current->thread, 1);
loaddebug(&current->thread, 2);
loaddebug(&current->thread, 3);
/* no 4 and 5 */
loaddebug(&current->thread, 6);
loaddebug(&current->thread, 7);
set_debugreg(current->thread.debugreg[0], 0);
set_debugreg(current->thread.debugreg[1], 1);
set_debugreg(current->thread.debugreg[2], 2);
set_debugreg(current->thread.debugreg[3], 3);
/* no 4 and 5 */
set_debugreg(current->thread.debugreg[6], 6);
set_debugreg(current->thread.debugreg[7], 7);
}
}

6
arch/ia64/Kconfig
View File

@ -161,6 +161,8 @@ config IA64_PAGE_SIZE_64KB
endchoice
source kernel/Kconfig.hz
config IA64_BRL_EMU
bool
depends on ITANIUM
@ -197,7 +199,7 @@ config HOLES_IN_ZONE
bool
default y if VIRTUAL_MEM_MAP
config DISCONTIGMEM
config ARCH_DISCONTIGMEM_ENABLE
bool "Discontiguous memory support"
depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP
default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA
@ -300,6 +302,8 @@ config PREEMPT
Say Y here if you are building a kernel for a desktop, embedded
or real-time system. Say N if you are unsure.
source "mm/Kconfig"
config HAVE_DEC_LOCK
bool
depends on (SMP || PREEMPT)

11
arch/ia64/Kconfig.debug
View File

@ -2,6 +2,17 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
config KPROBES
bool "Kprobes"
depends on DEBUG_KERNEL
help
Kprobes allows you to trap at almost any kernel address and
execute a callback function. register_kprobe() establishes
a probepoint and specifies the callback. Kprobes is useful
for kernel debugging, non-intrusive instrumentation and testing.
If in doubt, say "N".
choice
prompt "Physical memory granularity"
default IA64_GRANULE_64MB

2
arch/ia64/configs/sn2_defconfig
View File

@ -78,7 +78,7 @@ CONFIG_IA64_L1_CACHE_SHIFT=7
CONFIG_NUMA=y
CONFIG_VIRTUAL_MEM_MAP=y
CONFIG_HOLES_IN_ZONE=y
CONFIG_DISCONTIGMEM=y
CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
# CONFIG_IA64_CYCLONE is not set
CONFIG_IOSAPIC=y
CONFIG_IA64_SGI_SN_SIM=y

2
arch/ia64/defconfig
View File

@ -84,7 +84,7 @@ CONFIG_IA64_L1_CACHE_SHIFT=7
CONFIG_NUMA=y
CONFIG_VIRTUAL_MEM_MAP=y
CONFIG_HOLES_IN_ZONE=y
CONFIG_DISCONTIGMEM=y
CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
CONFIG_IA64_CYCLONE=y
CONFIG_IOSAPIC=y
CONFIG_FORCE_MAX_ZONEORDER=18

2
arch/ia64/ia32/ia32priv.h
View File

@ -241,7 +241,7 @@ typedef struct compat_siginfo {
/* POSIX.1b timers */
struct {
timer_t _tid; /* timer id */
compat_timer_t _tid; /* timer id */
int _overrun; /* overrun count */
char _pad[sizeof(unsigned int) - sizeof(int)];
compat_sigval_t _sigval; /* same as below */

1
arch/ia64/kernel/Makefile
View File

@ -20,6 +20,7 @@ obj-$(CONFIG_SMP) += smp.o smpboot.o domain.o
obj-$(CONFIG_PERFMON) += perfmon_default_smpl.o
obj-$(CONFIG_IA64_CYCLONE) += cyclone.o
obj-$(CONFIG_IA64_MCA_RECOVERY) += mca_recovery.o
obj-$(CONFIG_KPROBES) += kprobes.o jprobes.o
obj-$(CONFIG_IA64_UNCACHED_ALLOCATOR) += uncached.o
mca_recovery-y += mca_drv.o mca_drv_asm.o

61
arch/ia64/kernel/jprobes.S Normal file
View File

@ -0,0 +1,61 @@
/*
* Jprobe specific operations
*
* 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 02111-1307, USA.
*
* Copyright (C) Intel Corporation, 2005
*
* 2005-May Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
* <anil.s.keshavamurthy@intel.com> initial implementation
*
* Jprobes (a.k.a. "jump probes" which is built on-top of kprobes) allow a
* probe to be inserted into the beginning of a function call. The fundamental
* difference between a jprobe and a kprobe is the jprobe handler is executed
* in the same context as the target function, while the kprobe handlers
* are executed in interrupt context.
*
* For jprobes we initially gain control by placing a break point in the
* first instruction of the targeted function. When we catch that specific
* break, we:
* * set the return address to our jprobe_inst_return() function
* * jump to the jprobe handler function
*
* Since we fixed up the return address, the jprobe handler will return to our
* jprobe_inst_return() function, giving us control again. At this point we
* are back in the parents frame marker, so we do yet another call to our
* jprobe_break() function to fix up the frame marker as it would normally
* exist in the target function.
*
* Our jprobe_return function then transfers control back to kprobes.c by
* executing a break instruction using one of our reserved numbers. When we
* catch that break in kprobes.c, we continue like we do for a normal kprobe
* by single stepping the emulated instruction, and then returning execution
* to the correct location.
*/
#include <asm/asmmacro.h>
/*
* void jprobe_break(void)
*/
ENTRY(jprobe_break)
break.m 0x80300
END(jprobe_break)
/*
* void jprobe_inst_return(void)
*/
GLOBAL_ENTRY(jprobe_inst_return)
br.call.sptk.many b0=jprobe_break
END(jprobe_inst_return)

601
arch/ia64/kernel/kprobes.c Normal file
View File

@ -0,0 +1,601 @@
/*
* Kernel Probes (KProbes)
* arch/ia64/kernel/kprobes.c
*
* 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 02111-1307, USA.
*
* Copyright (C) IBM Corporation, 2002, 2004
* Copyright (C) Intel Corporation, 2005
*
* 2005-Apr Rusty Lynch <rusty.lynch@intel.com> and Anil S Keshavamurthy
* <anil.s.keshavamurthy@intel.com> adapted from i386
*/
#include <linux/config.h>
#include <linux/kprobes.h>
#include <linux/ptrace.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/preempt.h>
#include <linux/moduleloader.h>
#include <asm/pgtable.h>
#include <asm/kdebug.h>
extern void jprobe_inst_return(void);
/* kprobe_status settings */
#define KPROBE_HIT_ACTIVE 0x00000001
#define KPROBE_HIT_SS 0x00000002
static struct kprobe *current_kprobe, *kprobe_prev;
static unsigned long kprobe_status, kprobe_status_prev;
static struct pt_regs jprobe_saved_regs;
enum instruction_type {A, I, M, F, B, L, X, u};
static enum instruction_type bundle_encoding[32][3] = {
{ M, I, I }, /* 00 */
{ M, I, I }, /* 01 */
{ M, I, I }, /* 02 */
{ M, I, I }, /* 03 */
{ M, L, X }, /* 04 */
{ M, L, X }, /* 05 */
{ u, u, u }, /* 06 */
{ u, u, u }, /* 07 */
{ M, M, I }, /* 08 */
{ M, M, I }, /* 09 */
{ M, M, I }, /* 0A */
{ M, M, I }, /* 0B */
{ M, F, I }, /* 0C */
{ M, F, I }, /* 0D */
{ M, M, F }, /* 0E */
{ M, M, F }, /* 0F */
{ M, I, B }, /* 10 */
{ M, I, B }, /* 11 */
{ M, B, B }, /* 12 */
{ M, B, B }, /* 13 */
{ u, u, u }, /* 14 */
{ u, u, u }, /* 15 */
{ B, B, B }, /* 16 */
{ B, B, B }, /* 17 */
{ M, M, B }, /* 18 */
{ M, M, B }, /* 19 */
{ u, u, u }, /* 1A */
{ u, u, u }, /* 1B */
{ M, F, B }, /* 1C */
{ M, F, B }, /* 1D */
{ u, u, u }, /* 1E */
{ u, u, u }, /* 1F */
};
/*
* In this function we check to see if the instruction
* is IP relative instruction and update the kprobe
* inst flag accordingly
*/
static void update_kprobe_inst_flag(uint template, uint slot, uint major_opcode,
unsigned long kprobe_inst, struct kprobe *p)
{
p->ainsn.inst_flag = 0;
p->ainsn.target_br_reg = 0;
if (bundle_encoding[template][slot] == B) {
switch (major_opcode) {
case INDIRECT_CALL_OPCODE:
p->ainsn.inst_flag |= INST_FLAG_FIX_BRANCH_REG;
p->ainsn.target_br_reg = ((kprobe_inst >> 6) & 0x7);
break;
case IP_RELATIVE_PREDICT_OPCODE:
case IP_RELATIVE_BRANCH_OPCODE:
p->ainsn.inst_flag |= INST_FLAG_FIX_RELATIVE_IP_ADDR;
break;
case IP_RELATIVE_CALL_OPCODE:
p->ainsn.inst_flag |= INST_FLAG_FIX_RELATIVE_IP_ADDR;
p->ainsn.inst_flag |= INST_FLAG_FIX_BRANCH_REG;
p->ainsn.target_br_reg = ((kprobe_inst >> 6) & 0x7);
break;
}
} else if (bundle_encoding[template][slot] == X) {
switch (major_opcode) {
case LONG_CALL_OPCODE:
p->ainsn.inst_flag |= INST_FLAG_FIX_BRANCH_REG;
p->ainsn.target_br_reg = ((kprobe_inst >> 6) & 0x7);
break;
}
}
return;
}
/*
* In this function we check to see if the instruction
* on which we are inserting kprobe is supported.
* Returns 0 if supported
* Returns -EINVAL if unsupported
*/
static int unsupported_inst(uint template, uint slot, uint major_opcode,
unsigned long kprobe_inst, struct kprobe *p)
{
unsigned long addr = (unsigned long)p->addr;
if (bundle_encoding[template][slot] == I) {
switch (major_opcode) {
case 0x0: //I_UNIT_MISC_OPCODE:
/*
* Check for Integer speculation instruction
* - Bit 33-35 to be equal to 0x1
*/
if (((kprobe_inst >> 33) & 0x7) == 1) {
printk(KERN_WARNING
"Kprobes on speculation inst at <0x%lx> not supported\n",
addr);
return -EINVAL;
}
/*
* IP relative mov instruction
* - Bit 27-35 to be equal to 0x30
*/
if (((kprobe_inst >> 27) & 0x1FF) == 0x30) {
printk(KERN_WARNING
"Kprobes on \"mov r1=ip\" at <0x%lx> not supported\n",
addr);
return -EINVAL;
}
}
}
return 0;
}
/*
* In this function we check to see if the instruction
* (qp) cmpx.crel.ctype p1,p2=r2,r3
* on which we are inserting kprobe is cmp instruction
* with ctype as unc.
*/
static uint is_cmp_ctype_unc_inst(uint template, uint slot, uint major_opcode,
unsigned long kprobe_inst)
{
cmp_inst_t cmp_inst;
uint ctype_unc = 0;
if (!((bundle_encoding[template][slot] == I) ||
(bundle_encoding[template][slot] == M)))
goto out;
if (!((major_opcode == 0xC) || (major_opcode == 0xD) ||
(major_opcode == 0xE)))
goto out;
cmp_inst.l = kprobe_inst;
if ((cmp_inst.f.x2 == 0) || (cmp_inst.f.x2 == 1)) {
/* Integere compare - Register Register (A6 type)*/
if ((cmp_inst.f.tb == 0) && (cmp_inst.f.ta == 0)
&&(cmp_inst.f.c == 1))
ctype_unc = 1;
} else if ((cmp_inst.f.x2 == 2)||(cmp_inst.f.x2 == 3)) {
/* Integere compare - Immediate Register (A8 type)*/
if ((cmp_inst.f.ta == 0) &&(cmp_inst.f.c == 1))
ctype_unc = 1;
}
out:
return ctype_unc;
}
/*
* In this function we override the bundle with
* the break instruction at the given slot.
*/
static void prepare_break_inst(uint template, uint slot, uint major_opcode,
unsigned long kprobe_inst, struct kprobe *p)
{
unsigned long break_inst = BREAK_INST;
bundle_t *bundle = &p->ainsn.insn.bundle;
/*
* Copy the original kprobe_inst qualifying predicate(qp)
* to the break instruction iff !is_cmp_ctype_unc_inst
* because for cmp instruction with ctype equal to unc,
* which is a special instruction always needs to be
* executed regradless of qp
*/
if (!is_cmp_ctype_unc_inst(template, slot, major_opcode, kprobe_inst))
break_inst |= (0x3f & kprobe_inst);
switch (slot) {
case 0:
bundle->quad0.slot0 = break_inst;
break;
case 1:
bundle->quad0.slot1_p0 = break_inst;
bundle->quad1.slot1_p1 = break_inst >> (64-46);
break;
case 2:
bundle->quad1.slot2 = break_inst;
break;
}
/*
* Update the instruction flag, so that we can
* emulate the instruction properly after we
* single step on original instruction
*/
update_kprobe_inst_flag(template, slot, major_opcode, kprobe_inst, p);
}
static inline void get_kprobe_inst(bundle_t *bundle, uint slot,
unsigned long *kprobe_inst, uint *major_opcode)
{
unsigned long kprobe_inst_p0, kprobe_inst_p1;
unsigned int template;
template = bundle->quad0.template;
switch (slot) {
case 0:
*major_opcode = (bundle->quad0.slot0 >> SLOT0_OPCODE_SHIFT);
*kprobe_inst = bundle->quad0.slot0;
break;
case 1:
*major_opcode = (bundle->quad1.slot1_p1 >> SLOT1_p1_OPCODE_SHIFT);
kprobe_inst_p0 = bundle->quad0.slot1_p0;
kprobe_inst_p1 = bundle->quad1.slot1_p1;
*kprobe_inst = kprobe_inst_p0 | (kprobe_inst_p1 << (64-46));
break;
case 2:
*major_opcode = (bundle->quad1.slot2 >> SLOT2_OPCODE_SHIFT);
*kprobe_inst = bundle->quad1.slot2;
break;
}
}
static int valid_kprobe_addr(int template, int slot, unsigned long addr)
{
if ((slot > 2) || ((bundle_encoding[template][1] == L) && slot > 1)) {
printk(KERN_WARNING "Attempting to insert unaligned kprobe at 0x%lx\n",
addr);
return -EINVAL;
}
return 0;
}
static inline void save_previous_kprobe(void)
{
kprobe_prev = current_kprobe;
kprobe_status_prev = kprobe_status;
}
static inline void restore_previous_kprobe(void)
{
current_kprobe = kprobe_prev;
kprobe_status = kprobe_status_prev;
}
static inline void set_current_kprobe(struct kprobe *p)
{
current_kprobe = p;
}
int arch_prepare_kprobe(struct kprobe *p)
{
unsigned long addr = (unsigned long) p->addr;
unsigned long *kprobe_addr = (unsigned long *)(addr & ~0xFULL);
unsigned long kprobe_inst=0;
unsigned int slot = addr & 0xf, template, major_opcode = 0;
bundle_t *bundle = &p->ainsn.insn.bundle;
memcpy(&p->opcode.bundle, kprobe_addr, sizeof(bundle_t));
memcpy(&p->ainsn.insn.bundle, kprobe_addr, sizeof(bundle_t));
template = bundle->quad0.template;
if(valid_kprobe_addr(template, slot, addr))
return -EINVAL;
/* Move to slot 2, if bundle is MLX type and kprobe slot is 1 */
if (slot == 1 && bundle_encoding[template][1] == L)
slot++;
/* Get kprobe_inst and major_opcode from the bundle */
get_kprobe_inst(bundle, slot, &kprobe_inst, &major_opcode);
if (unsupported_inst(template, slot, major_opcode, kprobe_inst, p))
return -EINVAL;
prepare_break_inst(template, slot, major_opcode, kprobe_inst, p);
return 0;
}
void arch_arm_kprobe(struct kprobe *p)
{
unsigned long addr = (unsigned long)p->addr;
unsigned long arm_addr = addr & ~0xFULL;
memcpy((char *)arm_addr, &p->ainsn.insn.bundle, sizeof(bundle_t));
flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
}
void arch_disarm_kprobe(struct kprobe *p)
{
unsigned long addr = (unsigned long)p->addr;
unsigned long arm_addr = addr & ~0xFULL;
/* p->opcode contains the original unaltered bundle */
memcpy((char *) arm_addr, (char *) &p->opcode.bundle, sizeof(bundle_t));
flush_icache_range(arm_addr, arm_addr + sizeof(bundle_t));
}
void arch_remove_kprobe(struct kprobe *p)
{
}
/*
* We are resuming execution after a single step fault, so the pt_regs
* structure reflects the register state after we executed the instruction
* located in the kprobe (p->ainsn.insn.bundle). We still need to adjust
* the ip to point back to the original stack address. To set the IP address
* to original stack address, handle the case where we need to fixup the
* relative IP address and/or fixup branch register.
*/
static void resume_execution(struct kprobe *p, struct pt_regs *regs)
{
unsigned long bundle_addr = ((unsigned long) (&p->opcode.bundle)) & ~0xFULL;
unsigned long resume_addr = (unsigned long)p->addr & ~0xFULL;
unsigned long template;
int slot = ((unsigned long)p->addr & 0xf);
template = p->opcode.bundle.quad0.template;
if (slot == 1 && bundle_encoding[template][1] == L)
slot = 2;
if (p->ainsn.inst_flag) {
if (p->ainsn.inst_flag & INST_FLAG_FIX_RELATIVE_IP_ADDR) {
/* Fix relative IP address */
regs->cr_iip = (regs->cr_iip - bundle_addr) + resume_addr;
}
if (p->ainsn.inst_flag & INST_FLAG_FIX_BRANCH_REG) {
/*
* Fix target branch register, software convention is
* to use either b0 or b6 or b7, so just checking
* only those registers
*/
switch (p->ainsn.target_br_reg) {
case 0:
if ((regs->b0 == bundle_addr) ||
(regs->b0 == bundle_addr + 0x10)) {
regs->b0 = (regs->b0 - bundle_addr) +
resume_addr;
}
break;
case 6:
if ((regs->b6 == bundle_addr) ||
(regs->b6 == bundle_addr + 0x10)) {
regs->b6 = (regs->b6 - bundle_addr) +
resume_addr;
}
break;
case 7:
if ((regs->b7 == bundle_addr) ||
(regs->b7 == bundle_addr + 0x10)) {
regs->b7 = (regs->b7 - bundle_addr) +
resume_addr;
}
break;
} /* end switch */
}
goto turn_ss_off;
}
if (slot == 2) {
if (regs->cr_iip == bundle_addr + 0x10) {
regs->cr_iip = resume_addr + 0x10;
}
} else {
if (regs->cr_iip == bundle_addr) {
regs->cr_iip = resume_addr;
}
}
turn_ss_off:
/* Turn off Single Step bit */
ia64_psr(regs)->ss = 0;
}
static void prepare_ss(struct kprobe *p, struct pt_regs *regs)
{
unsigned long bundle_addr = (unsigned long) &p->opcode.bundle;
unsigned long slot = (unsigned long)p->addr & 0xf;
/* Update instruction pointer (IIP) and slot number (IPSR.ri) */
regs->cr_iip = bundle_addr & ~0xFULL;
if (slot > 2)
slot = 0;
ia64_psr(regs)->ri = slot;
/* turn on single stepping */
ia64_psr(regs)->ss = 1;
}
static int pre_kprobes_handler(struct die_args *args)
{
struct kprobe *p;
int ret = 0;
struct pt_regs *regs = args->regs;
kprobe_opcode_t *addr = (kprobe_opcode_t *)instruction_pointer(regs);
preempt_disable();
/* Handle recursion cases */
if (kprobe_running()) {
p = get_kprobe(addr);
if (p) {
if (kprobe_status == KPROBE_HIT_SS) {
unlock_kprobes();
goto no_kprobe;
}
/* We have reentered the pre_kprobe_handler(), since
* another probe was hit while within the handler.
* We here save the original kprobes variables and
* just single step on the instruction of the new probe
* without calling any user handlers.
*/
save_previous_kprobe();
set_current_kprobe(p);
p->nmissed++;
prepare_ss(p, regs);
kprobe_status = KPROBE_REENTER;
return 1;
} else if (args->err == __IA64_BREAK_JPROBE) {
/*
* jprobe instrumented function just completed
*/
p = current_kprobe;
if (p->break_handler && p->break_handler(p, regs)) {
goto ss_probe;
}
} else {
/* Not our break */
goto no_kprobe;
}
}
lock_kprobes();
p = get_kprobe(addr);
if (!p) {
unlock_kprobes();
goto no_kprobe;
}
kprobe_status = KPROBE_HIT_ACTIVE;
set_current_kprobe(p);
if (p->pre_handler && p->pre_handler(p, regs))
/*
* Our pre-handler is specifically requesting that we just
* do a return. This is handling the case where the
* pre-handler is really our special jprobe pre-handler.
*/
return 1;
ss_probe:
prepare_ss(p, regs);
kprobe_status = KPROBE_HIT_SS;
return 1;
no_kprobe:
preempt_enable_no_resched();
return ret;
}
static int post_kprobes_handler(struct pt_regs *regs)
{
if (!kprobe_running())
return 0;
if ((kprobe_status != KPROBE_REENTER) && current_kprobe->post_handler) {
kprobe_status = KPROBE_HIT_SSDONE;
current_kprobe->post_handler(current_kprobe, regs, 0);
}
resume_execution(current_kprobe, regs);
/*Restore back the original saved kprobes variables and continue. */
if (kprobe_status == KPROBE_REENTER) {
restore_previous_kprobe();
goto out;
}
unlock_kprobes();
out:
preempt_enable_no_resched();
return 1;
}
static int kprobes_fault_handler(struct pt_regs *regs, int trapnr)
{
if (!kprobe_running())
return 0;
if (current_kprobe->fault_handler &&
current_kprobe->fault_handler(current_kprobe, regs, trapnr))
return 1;
if (kprobe_status & KPROBE_HIT_SS) {
resume_execution(current_kprobe, regs);
unlock_kprobes();
preempt_enable_no_resched();
}
return 0;
}
int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val,
void *data)
{
struct die_args *args = (struct die_args *)data;
switch(val) {
case DIE_BREAK:
if (pre_kprobes_handler(args))
return NOTIFY_STOP;
break;
case DIE_SS:
if (post_kprobes_handler(args->regs))
return NOTIFY_STOP;
break;
case DIE_PAGE_FAULT:
if (kprobes_fault_handler(args->regs, args->trapnr))
return NOTIFY_STOP;
default:
break;
}
return NOTIFY_DONE;
}
int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
{
struct jprobe *jp = container_of(p, struct jprobe, kp);
unsigned long addr = ((struct fnptr *)(jp->entry))->ip;
/* save architectural state */
jprobe_saved_regs = *regs;
/* after rfi, execute the jprobe instrumented function */
regs->cr_iip = addr & ~0xFULL;
ia64_psr(regs)->ri = addr & 0xf;
regs->r1 = ((struct fnptr *)(jp->entry))->gp;
/*
* fix the return address to our jprobe_inst_return() function
* in the jprobes.S file
*/
regs->b0 = ((struct fnptr *)(jprobe_inst_return))->ip;
return 1;
}
int longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
{
*regs = jprobe_saved_regs;
return 1;
}

33
arch/ia64/kernel/traps.c
View File

@ -21,12 +21,26 @@
#include <asm/intrinsics.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/kdebug.h>
extern spinlock_t timerlist_lock;
fpswa_interface_t *fpswa_interface;
EXPORT_SYMBOL(fpswa_interface);
struct notifier_block *ia64die_chain;
static DEFINE_SPINLOCK(die_notifier_lock);
int register_die_notifier(struct notifier_block *nb)
{
int err = 0;
unsigned long flags;
spin_lock_irqsave(&die_notifier_lock, flags);
err = notifier_chain_register(&ia64die_chain, nb);
spin_unlock_irqrestore(&die_notifier_lock, flags);
return err;
}
void __init
trap_init (void)
{
@ -137,6 +151,10 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
switch (break_num) {
case 0: /* unknown error (used by GCC for __builtin_abort()) */
if (notify_die(DIE_BREAK, "break 0", regs, break_num, TRAP_BRKPT, SIGTRAP)
== NOTIFY_STOP) {
return;
}
die_if_kernel("bugcheck!", regs, break_num);
sig = SIGILL; code = ILL_ILLOPC;
break;
@ -189,6 +207,15 @@ ia64_bad_break (unsigned long break_num, struct pt_regs *regs)
sig = SIGILL; code = __ILL_BNDMOD;
break;
case 0x80200:
case 0x80300:
if (notify_die(DIE_BREAK, "kprobe", regs, break_num, TRAP_BRKPT, SIGTRAP)
== NOTIFY_STOP) {
return;
}
sig = SIGTRAP; code = TRAP_BRKPT;
break;
default:
if (break_num < 0x40000 || break_num > 0x100000)
die_if_kernel("Bad break", regs, break_num);
@ -548,7 +575,11 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
#endif
break;
case 35: siginfo.si_code = TRAP_BRANCH; ifa = 0; break;
case 36: siginfo.si_code = TRAP_TRACE; ifa = 0; break;
case 36:
if (notify_die(DIE_SS, "ss", &regs, vector,
vector, SIGTRAP) == NOTIFY_STOP)
return;
siginfo.si_code = TRAP_TRACE; ifa = 0; break;
}
siginfo.si_signo = SIGTRAP;
siginfo.si_errno = 0;

9
arch/ia64/mm/discontig.c
View File

@ -560,14 +560,15 @@ void show_mem(void)
int shared = 0, cached = 0, reserved = 0;
printk("Node ID: %d\n", pgdat->node_id);
for(i = 0; i < pgdat->node_spanned_pages; i++) {
struct page *page = pgdat_page_nr(pgdat, i);
if (!ia64_pfn_valid(pgdat->node_start_pfn+i))
continue;
if (PageReserved(pgdat->node_mem_map+i))
if (PageReserved(page))
reserved++;
else if (PageSwapCache(pgdat->node_mem_map+i))
else if (PageSwapCache(page))
cached++;
else if (page_count(pgdat->node_mem_map+i))
shared += page_count(pgdat->node_mem_map+i)-1;
else if (page_count(page))
shared += page_count(page)-1;
}
total_present += present;
total_reserved += reserved;

8
arch/ia64/mm/fault.c
View File

@ -14,6 +14,7 @@
#include <asm/processor.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/kdebug.h>
extern void die (char *, struct pt_regs *, long);
@ -102,6 +103,13 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re
goto bad_area_no_up;
#endif
/*
* This is to handle the kprobes on user space access instructions
*/
if (notify_die(DIE_PAGE_FAULT, "page fault", regs, code, TRAP_BRKPT,
SIGSEGV) == NOTIFY_STOP)
return;
down_read(&mm->mmap_sem);
vma = find_vma_prev(mm, address, &prev_vma);

4
arch/m32r/Kconfig
View File

@ -172,11 +172,13 @@ config NOHIGHMEM
bool
default y
config DISCONTIGMEM
config ARCH_DISCONTIGMEM_ENABLE
bool "Internal RAM Support"
depends on CHIP_M32700 || CHIP_M32102 || CHIP_VDEC2 || CHIP_OPSP
default y
source "mm/Kconfig"
config IRAM_START
hex "Internal memory start address (hex)"
default "00f00000"

4
arch/m32r/mm/init.c
View File

@ -49,7 +49,7 @@ void show_mem(void)
printk("Free swap: %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
for_each_pgdat(pgdat) {
for (i = 0; i < pgdat->node_spanned_pages; ++i) {
page = pgdat->node_mem_map + i;
page = pgdat_page_nr(pgdat, i);
total++;
if (PageHighMem(page))
highmem++;
@ -152,7 +152,7 @@ int __init reservedpages_count(void)
reservedpages = 0;
for_each_online_node(nid)
for (i = 0 ; i < MAX_LOW_PFN(nid) - START_PFN(nid) ; i++)
if (PageReserved(NODE_DATA(nid)->node_mem_map + i))
if (PageReserved(nid_page_nr(nid, i)))
reservedpages++;
return reservedpages;

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