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Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

This commit is contained in:
David S. Miller 2009-02-24 03:50:29 -08:00
parent d18921a0e3 f7e603ad8f
commit e70049b9e7
380 changed files with 10886 additions and 2118 deletions
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1
CREDITS
View File

@ -2166,7 +2166,6 @@ D: Initial implementation of VC's, pty's and select()
N: Pavel Machek
E: pavel@ucw.cz
E: pavel@suse.cz
D: Softcursor for vga, hypertech cdrom support, vcsa bugfix, nbd
D: sun4/330 port, capabilities for elf, speedup for rm on ext2, USB,
D: work on suspend-to-ram/disk, killing duplicates from ioctl32

2
Documentation/ABI/testing/sysfs-firmware-memmap
View File

@ -1,6 +1,6 @@
What: /sys/firmware/memmap/
Date: June 2008
Contact: Bernhard Walle <bwalle@suse.de>
Contact: Bernhard Walle <bernhard.walle@gmx.de>
Description:
On all platforms, the firmware provides a memory map which the
kernel reads. The resources from that memory map are registered

2
Documentation/DocBook/Makefile
View File

@ -6,7 +6,7 @@
# To add a new book the only step required is to add the book to the
# list of DOCBOOKS.
DOCBOOKS := z8530book.xml mcabook.xml \
DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \
kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
procfs-guide.xml writing_usb_driver.xml networking.xml \
kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \

418
Documentation/DocBook/device-drivers.tmpl Normal file
View File

@ -0,0 +1,418 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
<book id="LinuxDriversAPI">
<bookinfo>
<title>Linux Device Drivers</title>
<legalnotice>
<para>
This documentation 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.
</para>
<para>
This program is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
</para>
<para>
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
</para>
<para>
For more details see the file COPYING in the source
distribution of Linux.
</para>
</legalnotice>
</bookinfo>
<toc></toc>
<chapter id="Basics">
<title>Driver Basics</title>
<sect1><title>Driver Entry and Exit points</title>
!Iinclude/linux/init.h
</sect1>
<sect1><title>Atomic and pointer manipulation</title>
!Iarch/x86/include/asm/atomic_32.h
!Iarch/x86/include/asm/unaligned.h
</sect1>
<sect1><title>Delaying, scheduling, and timer routines</title>
!Iinclude/linux/sched.h
!Ekernel/sched.c
!Ekernel/timer.c
</sect1>
<sect1><title>High-resolution timers</title>
!Iinclude/linux/ktime.h
!Iinclude/linux/hrtimer.h
!Ekernel/hrtimer.c
</sect1>
<sect1><title>Workqueues and Kevents</title>
!Ekernel/workqueue.c
</sect1>
<sect1><title>Internal Functions</title>
!Ikernel/exit.c
!Ikernel/signal.c
!Iinclude/linux/kthread.h
!Ekernel/kthread.c
</sect1>
<sect1><title>Kernel objects manipulation</title>
<!--
X!Iinclude/linux/kobject.h
-->
!Elib/kobject.c
</sect1>
<sect1><title>Kernel utility functions</title>
!Iinclude/linux/kernel.h
!Ekernel/printk.c
!Ekernel/panic.c
!Ekernel/sys.c
!Ekernel/rcupdate.c
</sect1>
<sect1><title>Device Resource Management</title>
!Edrivers/base/devres.c
</sect1>
</chapter>
<chapter id="devdrivers">
<title>Device drivers infrastructure</title>
<sect1><title>Device Drivers Base</title>
<!--
X!Iinclude/linux/device.h
-->
!Edrivers/base/driver.c
!Edrivers/base/core.c
!Edrivers/base/class.c
!Edrivers/base/firmware_class.c
!Edrivers/base/transport_class.c
<!-- Cannot be included, because
attribute_container_add_class_device_adapter
and attribute_container_classdev_to_container
exceed allowed 44 characters maximum
X!Edrivers/base/attribute_container.c
-->
!Edrivers/base/sys.c
<!--
X!Edrivers/base/interface.c
-->
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>
<sect1><title>Device Drivers Power Management</title>
!Edrivers/base/power/main.c
</sect1>
<sect1><title>Device Drivers ACPI Support</title>
<!-- Internal functions only
X!Edrivers/acpi/sleep/main.c
X!Edrivers/acpi/sleep/wakeup.c
X!Edrivers/acpi/motherboard.c
X!Edrivers/acpi/bus.c
-->
!Edrivers/acpi/scan.c
!Idrivers/acpi/scan.c
<!-- No correct structured comments
X!Edrivers/acpi/pci_bind.c
-->
</sect1>
<sect1><title>Device drivers PnP support</title>
!Idrivers/pnp/core.c
<!-- No correct structured comments
X!Edrivers/pnp/system.c
-->
!Edrivers/pnp/card.c
!Idrivers/pnp/driver.c
!Edrivers/pnp/manager.c
!Edrivers/pnp/support.c
</sect1>
<sect1><title>Userspace IO devices</title>
!Edrivers/uio/uio.c
!Iinclude/linux/uio_driver.h
</sect1>
</chapter>
<chapter id="parportdev">
<title>Parallel Port Devices</title>
!Iinclude/linux/parport.h
!Edrivers/parport/ieee1284.c
!Edrivers/parport/share.c
!Idrivers/parport/daisy.c
</chapter>
<chapter id="message_devices">
<title>Message-based devices</title>
<sect1><title>Fusion message devices</title>
!Edrivers/message/fusion/mptbase.c
!Idrivers/message/fusion/mptbase.c
!Edrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptctl.c
!Idrivers/message/fusion/mptspi.c
!Idrivers/message/fusion/mptfc.c
!Idrivers/message/fusion/mptlan.c
</sect1>
<sect1><title>I2O message devices</title>
!Iinclude/linux/i2o.h
!Idrivers/message/i2o/core.h
!Edrivers/message/i2o/iop.c
!Idrivers/message/i2o/iop.c
!Idrivers/message/i2o/config-osm.c
!Edrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/bus-osm.c
!Edrivers/message/i2o/device.c
!Idrivers/message/i2o/device.c
!Idrivers/message/i2o/driver.c
!Idrivers/message/i2o/pci.c
!Idrivers/message/i2o/i2o_block.c
!Idrivers/message/i2o/i2o_scsi.c
!Idrivers/message/i2o/i2o_proc.c
</sect1>
</chapter>
<chapter id="snddev">
<title>Sound Devices</title>
!Iinclude/sound/core.h
!Esound/sound_core.c
!Iinclude/sound/pcm.h
!Esound/core/pcm.c
!Esound/core/device.c
!Esound/core/info.c
!Esound/core/rawmidi.c
!Esound/core/sound.c
!Esound/core/memory.c
!Esound/core/pcm_memory.c
!Esound/core/init.c
!Esound/core/isadma.c
!Esound/core/control.c
!Esound/core/pcm_lib.c
!Esound/core/hwdep.c
!Esound/core/pcm_native.c
!Esound/core/memalloc.c
<!-- FIXME: Removed for now since no structured comments in source
X!Isound/sound_firmware.c
-->
</chapter>
<chapter id="uart16x50">
<title>16x50 UART Driver</title>
!Iinclude/linux/serial_core.h
!Edrivers/serial/serial_core.c
!Edrivers/serial/8250.c
</chapter>
<chapter id="fbdev">
<title>Frame Buffer Library</title>
<para>
The frame buffer drivers depend heavily on four data structures.
These structures are declared in include/linux/fb.h. They are
fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
The last three can be made available to and from userland.
</para>
<para>
fb_info defines the current state of a particular video card.
Inside fb_info, there exists a fb_ops structure which is a
collection of needed functions to make fbdev and fbcon work.
fb_info is only visible to the kernel.
</para>
<para>
fb_var_screeninfo is used to describe the features of a video card
that are user defined. With fb_var_screeninfo, things such as
depth and the resolution may be defined.
</para>
<para>
The next structure is fb_fix_screeninfo. This defines the
properties of a card that are created when a mode is set and can't
be changed otherwise. A good example of this is the start of the
frame buffer memory. This "locks" the address of the frame buffer
memory, so that it cannot be changed or moved.
</para>
<para>
The last structure is fb_monospecs. In the old API, there was
little importance for fb_monospecs. This allowed for forbidden things
such as setting a mode of 800x600 on a fix frequency monitor. With
the new API, fb_monospecs prevents such things, and if used
correctly, can prevent a monitor from being cooked. fb_monospecs
will not be useful until kernels 2.5.x.
</para>
<sect1><title>Frame Buffer Memory</title>
!Edrivers/video/fbmem.c
</sect1>
<!--
<sect1><title>Frame Buffer Console</title>
X!Edrivers/video/console/fbcon.c
</sect1>
-->
<sect1><title>Frame Buffer Colormap</title>
!Edrivers/video/fbcmap.c
</sect1>
<!-- FIXME:
drivers/video/fbgen.c has no docs, which stuffs up the sgml. Comment
out until somebody adds docs. KAO
<sect1><title>Frame Buffer Generic Functions</title>
X!Idrivers/video/fbgen.c
</sect1>
KAO -->
<sect1><title>Frame Buffer Video Mode Database</title>
!Idrivers/video/modedb.c
!Edrivers/video/modedb.c
</sect1>
<sect1><title>Frame Buffer Macintosh Video Mode Database</title>
!Edrivers/video/macmodes.c
</sect1>
<sect1><title>Frame Buffer Fonts</title>
<para>
Refer to the file drivers/video/console/fonts.c for more information.
</para>
<!-- FIXME: Removed for now since no structured comments in source
X!Idrivers/video/console/fonts.c
-->
</sect1>
</chapter>
<chapter id="input_subsystem">
<title>Input Subsystem</title>
!Iinclude/linux/input.h
!Edrivers/input/input.c
!Edrivers/input/ff-core.c
!Edrivers/input/ff-memless.c
</chapter>
<chapter id="spi">
<title>Serial Peripheral Interface (SPI)</title>
<para>
SPI is the "Serial Peripheral Interface", widely used with
embedded systems because it is a simple and efficient
interface: basically a multiplexed shift register.
Its three signal wires hold a clock (SCK, often in the range
of 1-20 MHz), a "Master Out, Slave In" (MOSI) data line, and
a "Master In, Slave Out" (MISO) data line.
SPI is a full duplex protocol; for each bit shifted out the
MOSI line (one per clock) another is shifted in on the MISO line.
Those bits are assembled into words of various sizes on the
way to and from system memory.
An additional chipselect line is usually active-low (nCS);
four signals are normally used for each peripheral, plus
sometimes an interrupt.
</para>
<para>
The SPI bus facilities listed here provide a generalized
interface to declare SPI busses and devices, manage them
according to the standard Linux driver model, and perform
input/output operations.
At this time, only "master" side interfaces are supported,
where Linux talks to SPI peripherals and does not implement
such a peripheral itself.
(Interfaces to support implementing SPI slaves would
necessarily look different.)
</para>
<para>
The programming interface is structured around two kinds of driver,
and two kinds of device.
A "Controller Driver" abstracts the controller hardware, which may
be as simple as a set of GPIO pins or as complex as a pair of FIFOs
connected to dual DMA engines on the other side of the SPI shift
register (maximizing throughput). Such drivers bridge between
whatever bus they sit on (often the platform bus) and SPI, and
expose the SPI side of their device as a
<structname>struct spi_master</structname>.
SPI devices are children of that master, represented as a
<structname>struct spi_device</structname> and manufactured from
<structname>struct spi_board_info</structname> descriptors which
are usually provided by board-specific initialization code.
A <structname>struct spi_driver</structname> is called a
"Protocol Driver", and is bound to a spi_device using normal
driver model calls.
</para>
<para>
The I/O model is a set of queued messages. Protocol drivers
submit one or more <structname>struct spi_message</structname>
objects, which are processed and completed asynchronously.
(There are synchronous wrappers, however.) Messages are
built from one or more <structname>struct spi_transfer</structname>
objects, each of which wraps a full duplex SPI transfer.
A variety of protocol tweaking options are needed, because
different chips adopt very different policies for how they
use the bits transferred with SPI.
</para>
!Iinclude/linux/spi/spi.h
!Fdrivers/spi/spi.c spi_register_board_info
!Edrivers/spi/spi.c
</chapter>
<chapter id="i2c">
<title>I<superscript>2</superscript>C and SMBus Subsystem</title>
<para>
I<superscript>2</superscript>C (or without fancy typography, "I2C")
is an acronym for the "Inter-IC" bus, a simple bus protocol which is
widely used where low data rate communications suffice.
Since it's also a licensed trademark, some vendors use another
name (such as "Two-Wire Interface", TWI) for the same bus.
I2C only needs two signals (SCL for clock, SDA for data), conserving
board real estate and minimizing signal quality issues.
Most I2C devices use seven bit addresses, and bus speeds of up
to 400 kHz; there's a high speed extension (3.4 MHz) that's not yet
found wide use.
I2C is a multi-master bus; open drain signaling is used to
arbitrate between masters, as well as to handshake and to
synchronize clocks from slower clients.
</para>
<para>
The Linux I2C programming interfaces support only the master
side of bus interactions, not the slave side.
The programming interface is structured around two kinds of driver,
and two kinds of device.
An I2C "Adapter Driver" abstracts the controller hardware; it binds
to a physical device (perhaps a PCI device or platform_device) and
exposes a <structname>struct i2c_adapter</structname> representing
each I2C bus segment it manages.
On each I2C bus segment will be I2C devices represented by a
<structname>struct i2c_client</structname>. Those devices will
be bound to a <structname>struct i2c_driver</structname>,
which should follow the standard Linux driver model.
(At this writing, a legacy model is more widely used.)
There are functions to perform various I2C protocol operations; at
this writing all such functions are usable only from task context.
</para>
<para>
The System Management Bus (SMBus) is a sibling protocol. Most SMBus
systems are also I2C conformant. The electrical constraints are
tighter for SMBus, and it standardizes particular protocol messages
and idioms. Controllers that support I2C can also support most
SMBus operations, but SMBus controllers don't support all the protocol
options that an I2C controller will.
There are functions to perform various SMBus protocol operations,
either using I2C primitives or by issuing SMBus commands to
i2c_adapter devices which don't support those I2C operations.
</para>
!Iinclude/linux/i2c.h
!Fdrivers/i2c/i2c-boardinfo.c i2c_register_board_info
!Edrivers/i2c/i2c-core.c
</chapter>
</book>

377
Documentation/DocBook/kernel-api.tmpl
View File

@ -38,58 +38,6 @@
<toc></toc>
<chapter id="Basics">
<title>Driver Basics</title>
<sect1><title>Driver Entry and Exit points</title>
!Iinclude/linux/init.h
</sect1>
<sect1><title>Atomic and pointer manipulation</title>
!Iarch/x86/include/asm/atomic_32.h
!Iarch/x86/include/asm/unaligned.h
</sect1>
<sect1><title>Delaying, scheduling, and timer routines</title>
!Iinclude/linux/sched.h
!Ekernel/sched.c
!Ekernel/timer.c
</sect1>
<sect1><title>High-resolution timers</title>
!Iinclude/linux/ktime.h
!Iinclude/linux/hrtimer.h
!Ekernel/hrtimer.c
</sect1>
<sect1><title>Workqueues and Kevents</title>
!Ekernel/workqueue.c
</sect1>
<sect1><title>Internal Functions</title>
!Ikernel/exit.c
!Ikernel/signal.c
!Iinclude/linux/kthread.h
!Ekernel/kthread.c
</sect1>
<sect1><title>Kernel objects manipulation</title>
<!--
X!Iinclude/linux/kobject.h
-->
!Elib/kobject.c
</sect1>
<sect1><title>Kernel utility functions</title>
!Iinclude/linux/kernel.h
!Ekernel/printk.c
!Ekernel/panic.c
!Ekernel/sys.c
!Ekernel/rcupdate.c
</sect1>
<sect1><title>Device Resource Management</title>
!Edrivers/base/devres.c
</sect1>
</chapter>
<chapter id="adt">
<title>Data Types</title>
<sect1><title>Doubly Linked Lists</title>
@ -298,62 +246,6 @@ X!Earch/x86/kernel/mca_32.c
!Ikernel/acct.c
</chapter>
<chapter id="devdrivers">
<title>Device drivers infrastructure</title>
<sect1><title>Device Drivers Base</title>
<!--
X!Iinclude/linux/device.h
-->
!Edrivers/base/driver.c
!Edrivers/base/core.c
!Edrivers/base/class.c
!Edrivers/base/firmware_class.c
!Edrivers/base/transport_class.c
<!-- Cannot be included, because
attribute_container_add_class_device_adapter
and attribute_container_classdev_to_container
exceed allowed 44 characters maximum
X!Edrivers/base/attribute_container.c
-->
!Edrivers/base/sys.c
<!--
X!Edrivers/base/interface.c
-->
!Edrivers/base/platform.c
!Edrivers/base/bus.c
</sect1>
<sect1><title>Device Drivers Power Management</title>
!Edrivers/base/power/main.c
</sect1>
<sect1><title>Device Drivers ACPI Support</title>
<!-- Internal functions only
X!Edrivers/acpi/sleep/main.c
X!Edrivers/acpi/sleep/wakeup.c
X!Edrivers/acpi/motherboard.c
X!Edrivers/acpi/bus.c
-->
!Edrivers/acpi/scan.c
!Idrivers/acpi/scan.c
<!-- No correct structured comments
X!Edrivers/acpi/pci_bind.c
-->
</sect1>
<sect1><title>Device drivers PnP support</title>
!Idrivers/pnp/core.c
<!-- No correct structured comments
X!Edrivers/pnp/system.c
-->
!Edrivers/pnp/card.c
!Idrivers/pnp/driver.c
!Edrivers/pnp/manager.c
!Edrivers/pnp/support.c
</sect1>
<sect1><title>Userspace IO devices</title>
!Edrivers/uio/uio.c
!Iinclude/linux/uio_driver.h
</sect1>
</chapter>
<chapter id="blkdev">
<title>Block Devices</title>
!Eblock/blk-core.c
@ -381,275 +273,6 @@ X!Edrivers/pnp/system.c
!Edrivers/char/misc.c
</chapter>
<chapter id="parportdev">
<title>Parallel Port Devices</title>
!Iinclude/linux/parport.h
!Edrivers/parport/ieee1284.c
!Edrivers/parport/share.c
!Idrivers/parport/daisy.c
</chapter>
<chapter id="message_devices">
<title>Message-based devices</title>
<sect1><title>Fusion message devices</title>
!Edrivers/message/fusion/mptbase.c
!Idrivers/message/fusion/mptbase.c
!Edrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptscsih.c
!Idrivers/message/fusion/mptctl.c
!Idrivers/message/fusion/mptspi.c
!Idrivers/message/fusion/mptfc.c
!Idrivers/message/fusion/mptlan.c
</sect1>
<sect1><title>I2O message devices</title>
!Iinclude/linux/i2o.h
!Idrivers/message/i2o/core.h
!Edrivers/message/i2o/iop.c
!Idrivers/message/i2o/iop.c
!Idrivers/message/i2o/config-osm.c
!Edrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/exec-osm.c
!Idrivers/message/i2o/bus-osm.c
!Edrivers/message/i2o/device.c
!Idrivers/message/i2o/device.c
!Idrivers/message/i2o/driver.c
!Idrivers/message/i2o/pci.c
!Idrivers/message/i2o/i2o_block.c
!Idrivers/message/i2o/i2o_scsi.c
!Idrivers/message/i2o/i2o_proc.c
</sect1>
</chapter>
<chapter id="snddev">
<title>Sound Devices</title>
!Iinclude/sound/core.h
!Esound/sound_core.c
!Iinclude/sound/pcm.h
!Esound/core/pcm.c
!Esound/core/device.c
!Esound/core/info.c
!Esound/core/rawmidi.c
!Esound/core/sound.c
!Esound/core/memory.c
!Esound/core/pcm_memory.c
!Esound/core/init.c
!Esound/core/isadma.c
!Esound/core/control.c
!Esound/core/pcm_lib.c
!Esound/core/hwdep.c
!Esound/core/pcm_native.c
!Esound/core/memalloc.c
<!-- FIXME: Removed for now since no structured comments in source
X!Isound/sound_firmware.c
-->
</chapter>
<chapter id="uart16x50">
<title>16x50 UART Driver</title>
!Iinclude/linux/serial_core.h
!Edrivers/serial/serial_core.c
!Edrivers/serial/8250.c
</chapter>
<chapter id="fbdev">
<title>Frame Buffer Library</title>
<para>
The frame buffer drivers depend heavily on four data structures.
These structures are declared in include/linux/fb.h. They are
fb_info, fb_var_screeninfo, fb_fix_screeninfo and fb_monospecs.
The last three can be made available to and from userland.
</para>
<para>
fb_info defines the current state of a particular video card.
Inside fb_info, there exists a fb_ops structure which is a
collection of needed functions to make fbdev and fbcon work.
fb_info is only visible to the kernel.
</para>
<para>
fb_var_screeninfo is used to describe the features of a video card
that are user defined. With fb_var_screeninfo, things such as
depth and the resolution may be defined.
</para>
<para>
The next structure is fb_fix_screeninfo. This defines the
properties of a card that are created when a mode is set and can't
be changed otherwise. A good example of this is the start of the
frame buffer memory. This "locks" the address of the frame buffer
memory, so that it cannot be changed or moved.
</para>
<para>
The last structure is fb_monospecs. In the old API, there was
little importance for fb_monospecs. This allowed for forbidden things
such as setting a mode of 800x600 on a fix frequency monitor. With
the new API, fb_monospecs prevents such things, and if used
correctly, can prevent a monitor from being cooked. fb_monospecs
will not be useful until kernels 2.5.x.
</para>
<sect1><title>Frame Buffer Memory</title>
!Edrivers/video/fbmem.c
</sect1>
<!--
<sect1><title>Frame Buffer Console</title>
X!Edrivers/video/console/fbcon.c
</sect1>
-->
<sect1><title>Frame Buffer Colormap</title>
!Edrivers/video/fbcmap.c
</sect1>
<!-- FIXME:
drivers/video/fbgen.c has no docs, which stuffs up the sgml. Comment
out until somebody adds docs. KAO
<sect1><title>Frame Buffer Generic Functions</title>
X!Idrivers/video/fbgen.c
</sect1>
KAO -->
<sect1><title>Frame Buffer Video Mode Database</title>
!Idrivers/video/modedb.c
!Edrivers/video/modedb.c
</sect1>
<sect1><title>Frame Buffer Macintosh Video Mode Database</title>
!Edrivers/video/macmodes.c
</sect1>
<sect1><title>Frame Buffer Fonts</title>
<para>
Refer to the file drivers/video/console/fonts.c for more information.
</para>
<!-- FIXME: Removed for now since no structured comments in source
X!Idrivers/video/console/fonts.c
-->
</sect1>
</chapter>
<chapter id="input_subsystem">
<title>Input Subsystem</title>
!Iinclude/linux/input.h
!Edrivers/input/input.c
!Edrivers/input/ff-core.c
!Edrivers/input/ff-memless.c
</chapter>
<chapter id="spi">
<title>Serial Peripheral Interface (SPI)</title>
<para>
SPI is the "Serial Peripheral Interface", widely used with
embedded systems because it is a simple and efficient
interface: basically a multiplexed shift register.
Its three signal wires hold a clock (SCK, often in the range
of 1-20 MHz), a "Master Out, Slave In" (MOSI) data line, and
a "Master In, Slave Out" (MISO) data line.
SPI is a full duplex protocol; for each bit shifted out the
MOSI line (one per clock) another is shifted in on the MISO line.
Those bits are assembled into words of various sizes on the
way to and from system memory.
An additional chipselect line is usually active-low (nCS);
four signals are normally used for each peripheral, plus
sometimes an interrupt.
</para>
<para>
The SPI bus facilities listed here provide a generalized
interface to declare SPI busses and devices, manage them
according to the standard Linux driver model, and perform
input/output operations.
At this time, only "master" side interfaces are supported,
where Linux talks to SPI peripherals and does not implement
such a peripheral itself.
(Interfaces to support implementing SPI slaves would
necessarily look different.)
</para>
<para>
The programming interface is structured around two kinds of driver,
and two kinds of device.
A "Controller Driver" abstracts the controller hardware, which may
be as simple as a set of GPIO pins or as complex as a pair of FIFOs
connected to dual DMA engines on the other side of the SPI shift
register (maximizing throughput). Such drivers bridge between
whatever bus they sit on (often the platform bus) and SPI, and
expose the SPI side of their device as a
<structname>struct spi_master</structname>.
SPI devices are children of that master, represented as a
<structname>struct spi_device</structname> and manufactured from
<structname>struct spi_board_info</structname> descriptors which
are usually provided by board-specific initialization code.
A <structname>struct spi_driver</structname> is called a
"Protocol Driver", and is bound to a spi_device using normal
driver model calls.
</para>
<para>
The I/O model is a set of queued messages. Protocol drivers
submit one or more <structname>struct spi_message</structname>
objects, which are processed and completed asynchronously.
(There are synchronous wrappers, however.) Messages are
built from one or more <structname>struct spi_transfer</structname>
objects, each of which wraps a full duplex SPI transfer.
A variety of protocol tweaking options are needed, because
different chips adopt very different policies for how they
use the bits transferred with SPI.
</para>
!Iinclude/linux/spi/spi.h
!Fdrivers/spi/spi.c spi_register_board_info
!Edrivers/spi/spi.c
</chapter>
<chapter id="i2c">
<title>I<superscript>2</superscript>C and SMBus Subsystem</title>
<para>
I<superscript>2</superscript>C (or without fancy typography, "I2C")
is an acronym for the "Inter-IC" bus, a simple bus protocol which is
widely used where low data rate communications suffice.
Since it's also a licensed trademark, some vendors use another
name (such as "Two-Wire Interface", TWI) for the same bus.
I2C only needs two signals (SCL for clock, SDA for data), conserving
board real estate and minimizing signal quality issues.
Most I2C devices use seven bit addresses, and bus speeds of up
to 400 kHz; there's a high speed extension (3.4 MHz) that's not yet
found wide use.
I2C is a multi-master bus; open drain signaling is used to
arbitrate between masters, as well as to handshake and to
synchronize clocks from slower clients.
</para>
<para>
The Linux I2C programming interfaces support only the master
side of bus interactions, not the slave side.
The programming interface is structured around two kinds of driver,
and two kinds of device.
An I2C "Adapter Driver" abstracts the controller hardware; it binds
to a physical device (perhaps a PCI device or platform_device) and
exposes a <structname>struct i2c_adapter</structname> representing
each I2C bus segment it manages.
On each I2C bus segment will be I2C devices represented by a
<structname>struct i2c_client</structname>. Those devices will
be bound to a <structname>struct i2c_driver</structname>,
which should follow the standard Linux driver model.
(At this writing, a legacy model is more widely used.)
There are functions to perform various I2C protocol operations; at
this writing all such functions are usable only from task context.
</para>
<para>
The System Management Bus (SMBus) is a sibling protocol. Most SMBus
systems are also I2C conformant. The electrical constraints are
tighter for SMBus, and it standardizes particular protocol messages
and idioms. Controllers that support I2C can also support most
SMBus operations, but SMBus controllers don't support all the protocol
options that an I2C controller will.
There are functions to perform various SMBus protocol operations,
either using I2C primitives or by issuing SMBus commands to
i2c_adapter devices which don't support those I2C operations.
</para>
!Iinclude/linux/i2c.h
!Fdrivers/i2c/i2c-boardinfo.c i2c_register_board_info
!Edrivers/i2c/i2c-core.c
</chapter>
<chapter id="clk">
<title>Clock Framework</title>

2
Documentation/PCI/PCIEBUS-HOWTO.txt
View File

@ -93,7 +93,7 @@ the PCI Express Port Bus driver from loading a service driver.
int pcie_port_service_register(struct pcie_port_service_driver *new)
This API replaces the Linux Driver Model's pci_module_init API. A
This API replaces the Linux Driver Model's pci_register_driver API. A
service driver should always calls pcie_port_service_register at
module init. Note that after service driver being loaded, calls
such as pci_enable_device(dev) and pci_set_master(dev) are no longer

6
Documentation/cgroups/cgroups.txt
View File

@ -252,10 +252,8 @@ cgroup file system directories.
When a task is moved from one cgroup to another, it gets a new
css_set pointer - if there's an already existing css_set with the
desired collection of cgroups then that group is reused, else a new
css_set is allocated. Note that the current implementation uses a
linear search to locate an appropriate existing css_set, so isn't
very efficient. A future version will use a hash table for better
performance.
css_set is allocated. The appropriate existing css_set is located by
looking into a hash table.
To allow access from a cgroup to the css_sets (and hence tasks)
that comprise it, a set of cg_cgroup_link objects form a lattice;

63
Documentation/cgroups/cpusets.txt
View File

@ -142,7 +142,7 @@ into the rest of the kernel, none in performance critical paths:
- in fork and exit, to attach and detach a task from its cpuset.
- in sched_setaffinity, to mask the requested CPUs by what's
allowed in that tasks cpuset.
- in sched.c migrate_all_tasks(), to keep migrating tasks within
- in sched.c migrate_live_tasks(), to keep migrating tasks within
the CPUs allowed by their cpuset, if possible.
- in the mbind and set_mempolicy system calls, to mask the requested
Memory Nodes by what's allowed in that tasks cpuset.
@ -175,6 +175,10 @@ files describing that cpuset:
- mem_exclusive flag: is memory placement exclusive?
- mem_hardwall flag: is memory allocation hardwalled
- memory_pressure: measure of how much paging pressure in cpuset
- memory_spread_page flag: if set, spread page cache evenly on allowed nodes
- memory_spread_slab flag: if set, spread slab cache evenly on allowed nodes
- sched_load_balance flag: if set, load balance within CPUs on that cpuset
- sched_relax_domain_level: the searching range when migrating tasks
In addition, the root cpuset only has the following file:
- memory_pressure_enabled flag: compute memory_pressure?
@ -252,7 +256,7 @@ is causing.
This is useful both on tightly managed systems running a wide mix of
submitted jobs, which may choose to terminate or re-prioritize jobs that
are trying to use more memory than allowed on the nodes assigned them,
are trying to use more memory than allowed on the nodes assigned to them,
and with tightly coupled, long running, massively parallel scientific
computing jobs that will dramatically fail to meet required performance
goals if they start to use more memory than allowed to them.
@ -378,7 +382,7 @@ as cpusets and sched_setaffinity.
The algorithmic cost of load balancing and its impact on key shared
kernel data structures such as the task list increases more than
linearly with the number of CPUs being balanced. So the scheduler
has support to partition the systems CPUs into a number of sched
has support to partition the systems CPUs into a number of sched
domains such that it only load balances within each sched domain.
Each sched domain covers some subset of the CPUs in the system;
no two sched domains overlap; some CPUs might not be in any sched
@ -485,17 +489,22 @@ of CPUs allowed to a cpuset having 'sched_load_balance' enabled.
The internal kernel cpuset to scheduler interface passes from the
cpuset code to the scheduler code a partition of the load balanced
CPUs in the system. This partition is a set of subsets (represented
as an array of cpumask_t) of CPUs, pairwise disjoint, that cover all
the CPUs that must be load balanced.
as an array of struct cpumask) of CPUs, pairwise disjoint, that cover
all the CPUs that must be load balanced.
Whenever the 'sched_load_balance' flag changes, or CPUs come or go
from a cpuset with this flag enabled, or a cpuset with this flag
enabled is removed, the cpuset code builds a new such partition and
passes it to the scheduler sched domain setup code, to have the sched
domains rebuilt as necessary.
The cpuset code builds a new such partition and passes it to the
scheduler sched domain setup code, to have the sched domains rebuilt
as necessary, whenever:
- the 'sched_load_balance' flag of a cpuset with non-empty CPUs changes,
- or CPUs come or go from a cpuset with this flag enabled,
- or 'sched_relax_domain_level' value of a cpuset with non-empty CPUs
and with this flag enabled changes,
- or a cpuset with non-empty CPUs and with this flag enabled is removed,
- or a cpu is offlined/onlined.
This partition exactly defines what sched domains the scheduler should
setup - one sched domain for each element (cpumask_t) in the partition.
setup - one sched domain for each element (struct cpumask) in the
partition.
The scheduler remembers the currently active sched domain partitions.
When the scheduler routine partition_sched_domains() is invoked from
@ -559,7 +568,7 @@ domain, the largest value among those is used. Be careful, if one
requests 0 and others are -1 then 0 is used.
Note that modifying this file will have both good and bad effects,
and whether it is acceptable or not will be depend on your situation.
and whether it is acceptable or not depends on your situation.
Don't modify this file if you are not sure.
If your situation is:
@ -600,19 +609,15 @@ to allocate a page of memory for that task.
If a cpuset has its 'cpus' modified, then each task in that cpuset
will have its allowed CPU placement changed immediately. Similarly,
if a tasks pid is written to a cpusets 'tasks' file, in either its
current cpuset or another cpuset, then its allowed CPU placement is
changed immediately. If such a task had been bound to some subset
of its cpuset using the sched_setaffinity() call, the task will be
allowed to run on any CPU allowed in its new cpuset, negating the
affect of the prior sched_setaffinity() call.
if a tasks pid is written to another cpusets 'tasks' file, then its
allowed CPU placement is changed immediately. If such a task had been
bound to some subset of its cpuset using the sched_setaffinity() call,
the task will be allowed to run on any CPU allowed in its new cpuset,
negating the effect of the prior sched_setaffinity() call.
In summary, the memory placement of a task whose cpuset is changed is
updated by the kernel, on the next allocation of a page for that task,
but the processor placement is not updated, until that tasks pid is
rewritten to the 'tasks' file of its cpuset. This is done to avoid
impacting the scheduler code in the kernel with a check for changes
in a tasks processor placement.
and the processor placement is updated immediately.
Normally, once a page is allocated (given a physical page
of main memory) then that page stays on whatever node it
@ -681,10 +686,14 @@ and then start a subshell 'sh' in that cpuset:
# The next line should display '/Charlie'
cat /proc/self/cpuset
In the future, a C library interface to cpusets will likely be
available. For now, the only way to query or modify cpusets is
via the cpuset file system, using the various cd, mkdir, echo, cat,
rmdir commands from the shell, or their equivalent from C.
There are ways to query or modify cpusets:
- via the cpuset file system directly, using the various cd, mkdir, echo,
cat, rmdir commands from the shell, or their equivalent from C.
- via the C library libcpuset.
- via the C library libcgroup.
(http://sourceforge.net/proects/libcg/)
- via the python application cset.
(http://developer.novell.com/wiki/index.php/Cpuset)
The sched_setaffinity calls can also be done at the shell prompt using
SGI's runon or Robert Love's taskset. The mbind and set_mempolicy
@ -756,7 +765,7 @@ mount -t cpuset X /dev/cpuset
is equivalent to
mount -t cgroup -ocpuset X /dev/cpuset
mount -t cgroup -ocpuset,noprefix X /dev/cpuset
echo "/sbin/cpuset_release_agent" > /dev/cpuset/release_agent
2.2 Adding/removing cpus

8
Documentation/driver-model/device.txt
View File

@ -127,9 +127,11 @@ void unlock_device(struct device * dev);
Attributes
~~~~~~~~~~
struct device_attribute {
struct attribute attr;
ssize_t (*show)(struct device * dev, char * buf, size_t count, loff_t off);
ssize_t (*store)(struct device * dev, const char * buf, size_t count, loff_t off);
struct attribute attr;
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
};
Attributes of devices can be exported via drivers using a simple

50
Documentation/filesystems/sysfs.txt
View File

@ -2,8 +2,10 @@
sysfs - _The_ filesystem for exporting kernel objects.
Patrick Mochel <mochel@osdl.org>
Mike Murphy <mamurph@cs.clemson.edu>
10 January 2003
Revised: 22 February 2009
Original: 10 January 2003
What it is:
@ -64,12 +66,13 @@ An attribute definition is simply:
struct attribute {
char * name;
struct module *owner;
mode_t mode;
};
int sysfs_create_file(struct kobject * kobj, struct attribute * attr);
void sysfs_remove_file(struct kobject * kobj, struct attribute * attr);
int sysfs_create_file(struct kobject * kobj, const struct attribute * attr);
void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr);
A bare attribute contains no means to read or write the value of the
@ -80,9 +83,11 @@ a specific object type.
For example, the driver model defines struct device_attribute like:
struct device_attribute {
struct attribute attr;
ssize_t (*show)(struct device * dev, char * buf);
ssize_t (*store)(struct device * dev, const char * buf);
struct attribute attr;
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
};
int device_create_file(struct device *, struct device_attribute *);
@ -90,12 +95,8 @@ void device_remove_file(struct device *, struct device_attribute *);
It also defines this helper for defining device attributes:
#define DEVICE_ATTR(_name, _mode, _show, _store) \
struct device_attribute dev_attr_##_name = { \
.attr = {.name = __stringify(_name) , .mode = _mode }, \
.show = _show, \
.store = _store, \
};
#define DEVICE_ATTR(_name, _mode, _show, _store) \
struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
For example, declaring
@ -107,9 +108,9 @@ static struct device_attribute dev_attr_foo = {
.attr = {
.name = "foo",
.mode = S_IWUSR | S_IRUGO,
.show = show_foo,
.store = store_foo,
},
.show = show_foo,
.store = store_foo,
};
@ -161,10 +162,12 @@ To read or write attributes, show() or store() methods must be
specified when declaring the attribute. The method types should be as
simple as those defined for device attributes:
ssize_t (*show)(struct device * dev, char * buf);
ssize_t (*store)(struct device * dev, const char * buf);
ssize_t (*show)(struct device * dev, struct device_attribute * attr,
char * buf);
ssize_t (*store)(struct device * dev, struct device_attribute * attr,
const char * buf);
IOW, they should take only an object and a buffer as parameters.
IOW, they should take only an object, an attribute, and a buffer as parameters.
sysfs allocates a buffer of size (PAGE_SIZE) and passes it to the
@ -299,14 +302,16 @@ The following interface layers currently exist in sysfs:
Structure:
struct device_attribute {
struct attribute attr;
ssize_t (*show)(struct device * dev, char * buf);
ssize_t (*store)(struct device * dev, const char * buf);
struct attribute attr;
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
char *buf);
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count);
};
Declaring:
DEVICE_ATTR(_name, _str, _mode, _show, _store);
DEVICE_ATTR(_name, _mode, _show, _store);
Creation/Removal:
@ -342,7 +347,8 @@ Structure:
struct driver_attribute {
struct attribute attr;
ssize_t (*show)(struct device_driver *, char * buf);
ssize_t (*store)(struct device_driver *, const char * buf);
ssize_t (*store)(struct device_driver *, const char * buf,
size_t count);
};
Declaring:

101
Documentation/hwmon/hpfall.c Normal file
View File

@ -0,0 +1,101 @@
/* Disk protection for HP machines.
*
* Copyright 2008 Eric Piel
* Copyright 2009 Pavel Machek <pavel@suse.cz>
*
* GPLv2.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <signal.h>
void write_int(char *path, int i)
{
char buf[1024];
int fd = open(path, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
sprintf(buf, "%d", i);
if (write(fd, buf, strlen(buf)) != strlen(buf)) {
perror("write");
exit(1);
}
close(fd);
}
void set_led(int on)
{
write_int("/sys/class/leds/hp::hddprotect/brightness", on);
}
void protect(int seconds)
{
write_int("/sys/block/sda/device/unload_heads", seconds*1000);
}
int on_ac(void)
{
// /sys/class/power_supply/AC0/online
}
int lid_open(void)
{
// /proc/acpi/button/lid/LID/state
}
void ignore_me(void)
{
protect(0);
set_led(0);
}
int main(int argc, char* argv[])
{
int fd, ret;
fd = open("/dev/freefall", O_RDONLY);
if (fd < 0) {
perror("open");
return EXIT_FAILURE;
}
signal(SIGALRM, ignore_me);
for (;;) {
unsigned char count;
ret = read(fd, &count, sizeof(count));
alarm(0);
if ((ret == -1) && (errno == EINTR)) {
/* Alarm expired, time to unpark the heads */
continue;
}
if (ret != sizeof(count)) {
perror("read");
break;
}
protect(21);
set_led(1);
if (1 || on_ac() || lid_open()) {
alarm(2);
} else {
alarm(20);
}
}
close(fd);
return EXIT_SUCCESS;
}

8
Documentation/hwmon/lis3lv02d
View File

@ -33,6 +33,14 @@ rate - reports the sampling rate of the accelerometer device in HZ
This driver also provides an absolute input class device, allowing
the laptop to act as a pinball machine-esque joystick.
Another feature of the driver is misc device called "freefall" that
acts similar to /dev/rtc and reacts on free-fall interrupts received
from the device. It supports blocking operations, poll/select and
fasync operation modes. You must read 1 bytes from the device. The
result is number of free-fall interrupts since the last successful
read (or 255 if number of interrupts would not fit).
Axes orientation
----------------

2
Documentation/kernel-parameters.txt
View File

@ -134,7 +134,7 @@ and is between 256 and 4096 characters. It is defined in the file
acpi= [HW,ACPI,X86-64,i386]
Advanced Configuration and Power Interface
Format: { force | off | ht | strict | noirq }
Format: { force | off | ht | strict | noirq | rsdt }
force -- enable ACPI if default was off
off -- disable ACPI if default was on
noirq -- do not use ACPI for IRQ routing

6
Documentation/tracers/mmiotrace.txt
View File

@ -78,12 +78,10 @@ to view your kernel log and look for "mmiotrace has lost events" warning. If
events were lost, the trace is incomplete. You should enlarge the buffers and
try again. Buffers are enlarged by first seeing how large the current buffers
are:
$ cat /debug/tracing/trace_entries
$ cat /debug/tracing/buffer_size_kb
gives you a number. Approximately double this number and write it back, for
instance:
$ echo 0 > /debug/tracing/tracing_enabled
$ echo 128000 > /debug/tracing/trace_entries
$ echo 1 > /debug/tracing/tracing_enabled
$ echo 128000 > /debug/tracing/buffer_size_kb
Then start again from the top.
If you are doing a trace for a driver project, e.g. Nouveau, you should also

29
MAINTAINERS
View File

@ -692,6 +692,13 @@ M: kernel@wantstofly.org
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
S: Maintained
ARM/NUVOTON W90X900 ARM ARCHITECTURE
P: Wan ZongShun
M: mcuos.com@gmail.com
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
W: http://www.mcuos.com
S: Maintained
ARPD SUPPORT
P: Jonathan Layes
L: netdev@vger.kernel.org
@ -1905,10 +1912,10 @@ W: http://gigaset307x.sourceforge.net/
S: Maintained
HARD DRIVE ACTIVE PROTECTION SYSTEM (HDAPS) DRIVER
P: Robert Love
M: rlove@rlove.org
M: linux-kernel@vger.kernel.org
W: http://www.kernel.org/pub/linux/kernel/people/rml/hdaps/
P: Frank Seidel
M: frank@f-seidel.de
L: lm-sensors@lm-sensors.org
W: http://www.kernel.org/pub/linux/kernel/people/fseidel/hdaps/
S: Maintained
GSPCA FINEPIX SUBDRIVER
@ -2001,7 +2008,7 @@ S: Maintained
HIBERNATION (aka Software Suspend, aka swsusp)
P: Pavel Machek
M: pavel@suse.cz
M: pavel@ucw.cz
P: Rafael J. Wysocki
M: rjw@sisk.pl
L: linux-pm@lists.linux-foundation.org
@ -3327,8 +3334,8 @@ P: Jeremy Fitzhardinge
M: jeremy@xensource.com
P: Chris Wright
M: chrisw@sous-sol.org
P: Zachary Amsden
M: zach@vmware.com
P: Alok Kataria
M: akataria@vmware.com
P: Rusty Russell
M: rusty@rustcorp.com.au
L: virtualization@lists.osdl.org
@ -4172,7 +4179,7 @@ SUSPEND TO RAM
P: Len Brown
M: len.brown@intel.com
P: Pavel Machek
M: pavel@suse.cz
M: pavel@ucw.cz
P: Rafael J. Wysocki
M: rjw@sisk.pl
L: linux-pm@lists.linux-foundation.org
@ -4924,11 +4931,11 @@ L: zd1211-devs@lists.sourceforge.net (subscribers-only)
S: Maintained
ZR36067 VIDEO FOR LINUX DRIVER
P: Ronald Bultje
M: rbultje@ronald.bitfreak.net
L: mjpeg-users@lists.sourceforge.net
L: linux-media@vger.kernel.org
W: http://mjpeg.sourceforge.net/driver-zoran/
S: Maintained
T: Mercurial http://linuxtv.org/hg/v4l-dvb
S: Odd Fixes
ZS DECSTATION Z85C30 SERIAL DRIVER
P: Maciej W. Rozycki

4
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 29
EXTRAVERSION = -rc5
EXTRAVERSION = -rc6
NAME = Erotic Pickled Herring
# *DOCUMENTATION*
@ -389,6 +389,7 @@ PHONY += outputmakefile
# output directory.
outputmakefile:
ifneq ($(KBUILD_SRC),)
$(Q)ln -fsn $(srctree) source
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
endif
@ -946,7 +947,6 @@ ifneq ($(KBUILD_SRC),)
mkdir -p include2; \
ln -fsn $(srctree)/include/asm-$(SRCARCH) include2/asm; \
fi
ln -fsn $(srctree) source
endif
# prepare2 creates a makefile if using a separate output directory

2
README
View File

@ -188,7 +188,7 @@ CONFIGURING the kernel:
values to random values.
You can find more information on using the Linux kernel config tools
in Documentation/kbuild/make-configs.txt.
in Documentation/kbuild/kconfig.txt.
NOTES on "make config":
- having unnecessary drivers will make the kernel bigger, and can

8
arch/alpha/kernel/process.c
View File

@ -93,8 +93,8 @@ common_shutdown_1(void *generic_ptr)
if (cpuid != boot_cpuid) {
flags |= 0x00040000UL; /* "remain halted" */
*pflags = flags;
cpu_clear(cpuid, cpu_present_map);
cpu_clear(cpuid, cpu_possible_map);
set_cpu_present(cpuid, false);
set_cpu_possible(cpuid, false);
halt();
}
#endif
@ -120,8 +120,8 @@ common_shutdown_1(void *generic_ptr)
#ifdef CONFIG_SMP
/* Wait for the secondaries to halt. */
cpu_clear(boot_cpuid, cpu_present_map);
cpu_clear(boot_cpuid, cpu_possible_map);
set_cpu_present(boot_cpuid, false);
set_cpu_possible(boot_cpuid, false);
while (cpus_weight(cpu_present_map))
barrier();
#endif

12
arch/alpha/kernel/smp.c
View File

@ -120,12 +120,12 @@ void __cpuinit
smp_callin(void)
{
int cpuid = hard_smp_processor_id();
cpumask_t mask = cpu_online_map;
if (cpu_test_and_set(cpuid, mask)) {
if (cpu_online(cpuid)) {
printk("??, cpu 0x%x already present??\n", cpuid);
BUG();
}
set_cpu_online(cpuid, true);
/* Turn on machine checks. */
wrmces(7);
@ -436,8 +436,8 @@ setup_smp(void)
((char *)cpubase + i*hwrpb->processor_size);
if ((cpu->flags & 0x1cc) == 0x1cc) {
smp_num_probed++;
cpu_set(i, cpu_possible_map);
cpu_set(i, cpu_present_map);
set_cpu_possible(i, true);
set_cpu_present(i, true);
cpu->pal_revision = boot_cpu_palrev;
}
@ -470,8 +470,8 @@ smp_prepare_cpus(unsigned int max_cpus)
/* Nothing to do on a UP box, or when told not to. */
if (smp_num_probed == 1 || max_cpus == 0) {
cpu_possible_map = cpumask_of_cpu(boot_cpuid);
cpu_present_map = cpumask_of_cpu(boot_cpuid);
init_cpu_possible(cpumask_of(boot_cpuid));
init_cpu_present(cpumask_of(boot_cpuid));
printk(KERN_INFO "SMP mode deactivated.\n");
return;
}

2
arch/arm/configs/at91sam9260ek_defconfig
View File

@ -608,7 +608,7 @@ CONFIG_WATCHDOG_NOWAYOUT=y
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_AT91SAM9_WATCHDOG=y
CONFIG_AT91SAM9X_WATCHDOG=y
#
# USB-based Watchdog Cards

2
arch/arm/configs/at91sam9261ek_defconfig
View File

@ -700,7 +700,7 @@ CONFIG_WATCHDOG_NOWAYOUT=y
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_AT91SAM9_WATCHDOG=y
CONFIG_AT91SAM9X_WATCHDOG=y
#
# USB-based Watchdog Cards

2
arch/arm/configs/at91sam9263ek_defconfig
View File

@ -710,7 +710,7 @@ CONFIG_WATCHDOG_NOWAYOUT=y
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_AT91SAM9_WATCHDOG=y
CONFIG_AT91SAM9X_WATCHDOG=y
#
# USB-based Watchdog Cards

2
arch/arm/configs/at91sam9rlek_defconfig
View File

@ -606,7 +606,7 @@ CONFIG_WATCHDOG_NOWAYOUT=y
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_AT91SAM9_WATCHDOG=y
CONFIG_AT91SAM9X_WATCHDOG=y
#
# Sonics Silicon Backplane

2
arch/arm/configs/qil-a9260_defconfig
View File

@ -727,7 +727,7 @@ CONFIG_WATCHDOG_NOWAYOUT=y
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
# CONFIG_AT91SAM9_WATCHDOG is not set
# CONFIG_AT91SAM9X_WATCHDOG is not set
#
# USB-based Watchdog Cards

4
arch/arm/kernel/elf.c
View File

@ -74,9 +74,9 @@ EXPORT_SYMBOL(elf_set_personality);
*/
int arm_elf_read_implies_exec(const struct elf32_hdr *x, int executable_stack)
{
if (executable_stack != EXSTACK_ENABLE_X)
if (executable_stack != EXSTACK_DISABLE_X)
return 1;
if (cpu_architecture() <= CPU_ARCH_ARMv6)
if (cpu_architecture() < CPU_ARCH_ARMv6)
return 1;
return 0;
}

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

@ -697,7 +697,7 @@ static void __init at91_add_device_rtt(void)
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91cap9_wdt_device = {
.name = "at91_wdt",
.id = -1,

2
arch/arm/mach-at91/at91sam9260_devices.c
View File

@ -643,7 +643,7 @@ static void __init at91_add_device_rtt(void)
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91sam9260_wdt_device = {
.name = "at91_wdt",
.id = -1,

2
arch/arm/mach-at91/at91sam9261_devices.c
View File

@ -621,7 +621,7 @@ static void __init at91_add_device_rtt(void)
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91sam9261_wdt_device = {
.name = "at91_wdt",
.id = -1,

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

@ -854,7 +854,7 @@ static void __init at91_add_device_rtt(void)
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91sam9263_wdt_device = {
.name = "at91_wdt",
.id = -1,

2
arch/arm/mach-at91/at91sam9rl_devices.c
View File

@ -609,7 +609,7 @@ static void __init at91_add_device_rtt(void)
* Watchdog
* -------------------------------------------------------------------- */
#if defined(CONFIG_AT91SAM9_WATCHDOG) || defined(CONFIG_AT91SAM9_WATCHDOG_MODULE)
#if defined(CONFIG_AT91SAM9X_WATCHDOG) || defined(CONFIG_AT91SAM9X_WATCHDOG_MODULE)
static struct platform_device at91sam9rl_wdt_device = {
.name = "at91_wdt",
.id = -1,

15
arch/arm/mach-at91/gpio.c
View File

@ -490,7 +490,8 @@ postcore_initcall(at91_gpio_debugfs_init);
/*--------------------------------------------------------------------------*/
/* This lock class tells lockdep that GPIO irqs are in a different
/*
* This lock class tells lockdep that GPIO irqs are in a different
* category than their parents, so it won't report false recursion.
*/
static struct lock_class_key gpio_lock_class;
@ -509,9 +510,6 @@ void __init at91_gpio_irq_setup(void)
unsigned id = this->id;
unsigned i;
/* enable PIO controller's clock */
clk_enable(this->clock);
__raw_writel(~0, this->regbase + PIO_IDR);
for (i = 0, pin = this->chipbase; i < 32; i++, pin++) {
@ -556,7 +554,14 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
data->chipbase = PIN_BASE + i * 32;
data->regbase = data->offset + (void __iomem *)AT91_VA_BASE_SYS;
/* AT91SAM9263_ID_PIOCDE groups PIOC, PIOD, PIOE */
/* enable PIO controller's clock */
clk_enable(data->clock);
/*
* Some processors share peripheral ID between multiple GPIO banks.
* SAM9263 (PIOC, PIOD, PIOE)
* CAP9 (PIOA, PIOB, PIOC, PIOD)
*/
if (last && last->id == data->id)
last->next = data;
}

1
arch/arm/mach-at91/include/mach/board.h
View File

@ -93,6 +93,7 @@ struct atmel_nand_data {
u8 enable_pin; /* chip enable */
u8 det_pin; /* card detect */
u8 rdy_pin; /* ready/busy */
u8 rdy_pin_active_low; /* rdy_pin value is inverted */
u8 ale; /* address line number connected to ALE */
u8 cle; /* address line number connected to CLE */
u8 bus_width_16; /* buswidth is 16 bit */

3
arch/arm/mach-ep93xx/include/mach/gesbc9312.h
View File

@ -1,3 +0,0 @@
/*
* arch/arm/mach-ep93xx/include/mach/gesbc9312.h
*/

1
arch/arm/mach-ep93xx/include/mach/hardware.h
View File

@ -10,7 +10,6 @@
#include "platform.h"
#include "gesbc9312.h"
#include "ts72xx.h"
#endif

2
arch/arm/mach-kirkwood/irq.c
View File

@ -42,7 +42,7 @@ void __init kirkwood_init_irq(void)
writel(0, GPIO_EDGE_CAUSE(32));
for (i = IRQ_KIRKWOOD_GPIO_START; i < NR_IRQS; i++) {
set_irq_chip(i, &orion_gpio_irq_level_chip);
set_irq_chip(i, &orion_gpio_irq_chip);
set_irq_handler(i, handle_level_irq);
irq_desc[i].status |= IRQ_LEVEL;
set_irq_flags(i, IRQF_VALID);

2
arch/arm/mach-mv78xx0/irq.c
View File

@ -40,7 +40,7 @@ void __init mv78xx0_init_irq(void)
writel(0, GPIO_EDGE_CAUSE(0));
for (i = IRQ_MV78XX0_GPIO_START; i < NR_IRQS; i++) {
set_irq_chip(i, &orion_gpio_irq_level_chip);
set_irq_chip(i, &orion_gpio_irq_chip);
set_irq_handler(i, handle_level_irq);
irq_desc[i].status |= IRQ_LEVEL;
set_irq_flags(i, IRQF_VALID);

16
arch/arm/mach-omap2/clock.c
View File

@ -565,7 +565,7 @@ u32 omap2_clksel_to_divisor(struct clk *clk, u32 field_val)
*
* Given a struct clk of a rate-selectable clksel clock, and a clock divisor,
* find the corresponding register field value. The return register value is
* the value before left-shifting. Returns 0xffffffff on error
* the value before left-shifting. Returns ~0 on error
*/
u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
{
@ -577,7 +577,7 @@ u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
clks = omap2_get_clksel_by_parent(clk, clk->parent);
if (clks == NULL)
return 0;
return ~0;
for (clkr = clks->rates; clkr->div; clkr++) {
if ((clkr->flags & cpu_mask) && (clkr->div == div))
@ -588,7 +588,7 @@ u32 omap2_divisor_to_clksel(struct clk *clk, u32 div)
printk(KERN_ERR "clock: Could not find divisor %d for "
"clock %s parent %s\n", div, clk->name,
clk->parent->name);
return 0;
return ~0;
}
return clkr->val;
@ -708,7 +708,7 @@ static u32 omap2_clksel_get_src_field(void __iomem **src_addr,
return 0;
for (clkr = clks->rates; clkr->div; clkr++) {
if (clkr->flags & (cpu_mask | DEFAULT_RATE))
if (clkr->flags & cpu_mask && clkr->flags & DEFAULT_RATE)
break; /* Found the default rate for this platform */
}
@ -746,7 +746,7 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
return -EINVAL;
if (clk->usecount > 0)
_omap2_clk_disable(clk);
omap2_clk_disable(clk);
/* Set new source value (previous dividers if any in effect) */
reg_val = __raw_readl(src_addr) & ~field_mask;
@ -759,11 +759,11 @@ int omap2_clk_set_parent(struct clk *clk, struct clk *new_parent)
wmb();
}
if (clk->usecount > 0)
_omap2_clk_enable(clk);
clk->parent = new_parent;
if (clk->usecount > 0)
omap2_clk_enable(clk);
/* CLKSEL clocks follow their parents' rates, divided by a divisor */
clk->rate = new_parent->rate;

2
arch/arm/mach-orion5x/irq.c
View File

@ -44,7 +44,7 @@ void __init orion5x_init_irq(void)
* User can use set_type() if he wants to use edge types handlers.
*/
for (i = IRQ_ORION5X_GPIO_START; i < NR_IRQS; i++) {
set_irq_chip(i, &orion_gpio_irq_level_chip);
set_irq_chip(i, &orion_gpio_irq_chip);
set_irq_handler(i, handle_level_irq);
irq_desc[i].status |= IRQ_LEVEL;
set_irq_flags(i, IRQF_VALID);

3
arch/arm/mm/mmu.c
View File

@ -693,7 +693,8 @@ static void __init sanity_check_meminfo(void)
* Check whether this memory bank would entirely overlap
* the vmalloc area.
*/
if (__va(bank->start) >= VMALLOC_MIN) {
if (__va(bank->start) >= VMALLOC_MIN ||
__va(bank->start) < PAGE_OFFSET) {
printk(KERN_NOTICE "Ignoring RAM at %.8lx-%.8lx "
"(vmalloc region overlap).\n",
bank->start, bank->start + bank->size - 1);

75
arch/arm/plat-orion/gpio.c
View File

@ -265,51 +265,36 @@ EXPORT_SYMBOL(orion_gpio_set_blink);
* polarity LEVEL mask
*
****************************************************************************/
static void gpio_irq_edge_ack(u32 irq)
{
int pin = irq_to_gpio(irq);
writel(~(1 << (pin & 31)), GPIO_EDGE_CAUSE(pin));
static void gpio_irq_ack(u32 irq)
{
int type = irq_desc[irq].status & IRQ_TYPE_SENSE_MASK;
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
int pin = irq_to_gpio(irq);
writel(~(1 << (pin & 31)), GPIO_EDGE_CAUSE(pin));
}
}
static void gpio_irq_edge_mask(u32 irq)
static void gpio_irq_mask(u32 irq)
{
int pin = irq_to_gpio(irq);
u32 u;
u = readl(GPIO_EDGE_MASK(pin));
int type = irq_desc[irq].status & IRQ_TYPE_SENSE_MASK;
u32 reg = (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) ?
GPIO_EDGE_MASK(pin) : GPIO_LEVEL_MASK(pin);
u32 u = readl(reg);
u &= ~(1 << (pin & 31));
writel(u, GPIO_EDGE_MASK(pin));
writel(u, reg);
}
static void gpio_irq_edge_unmask(u32 irq)
static void gpio_irq_unmask(u32 irq)
{
int pin = irq_to_gpio(irq);
u32 u;
u = readl(GPIO_EDGE_MASK(pin));
int type = irq_desc[irq].status & IRQ_TYPE_SENSE_MASK;
u32 reg = (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) ?
GPIO_EDGE_MASK(pin) : GPIO_LEVEL_MASK(pin);
u32 u = readl(reg);
u |= 1 << (pin & 31);
writel(u, GPIO_EDGE_MASK(pin));
}
static void gpio_irq_level_mask(u32 irq)
{
int pin = irq_to_gpio(irq);
u32 u;
u = readl(GPIO_LEVEL_MASK(pin));
u &= ~(1 << (pin & 31));
writel(u, GPIO_LEVEL_MASK(pin));
}
static void gpio_irq_level_unmask(u32 irq)
{
int pin = irq_to_gpio(irq);
u32 u;
u = readl(GPIO_LEVEL_MASK(pin));
u |= 1 << (pin & 31);
writel(u, GPIO_LEVEL_MASK(pin));
writel(u, reg);
}
static int gpio_irq_set_type(u32 irq, u32 type)
@ -331,9 +316,9 @@ static int gpio_irq_set_type(u32 irq, u32 type)
* Set edge/level type.
*/
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
desc->chip = &orion_gpio_irq_edge_chip;
desc->handle_irq = handle_edge_irq;
} else if (type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) {
desc->chip = &orion_gpio_irq_level_chip;
desc->handle_irq = handle_level_irq;
} else {
printk(KERN_ERR "failed to set irq=%d (type=%d)\n", irq, type);
return -EINVAL;
@ -371,19 +356,11 @@ static int gpio_irq_set_type(u32 irq, u32 type)
return 0;
}
struct irq_chip orion_gpio_irq_edge_chip = {
.name = "orion_gpio_irq_edge",
.ack = gpio_irq_edge_ack,
.mask = gpio_irq_edge_mask,
.unmask = gpio_irq_edge_unmask,
.set_type = gpio_irq_set_type,
};
struct irq_chip orion_gpio_irq_level_chip = {
.name = "orion_gpio_irq_level",
.mask = gpio_irq_level_mask,
.mask_ack = gpio_irq_level_mask,
.unmask = gpio_irq_level_unmask,
struct irq_chip orion_gpio_irq_chip = {
.name = "orion_gpio",
.ack = gpio_irq_ack,
.mask = gpio_irq_mask,
.unmask = gpio_irq_unmask,
.set_type = gpio_irq_set_type,
};

3
arch/arm/plat-orion/include/plat/gpio.h
View File

@ -31,8 +31,7 @@ void orion_gpio_set_blink(unsigned pin, int blink);
/*
* GPIO interrupt handling.
*/
extern struct irq_chip orion_gpio_irq_edge_chip;
extern struct irq_chip orion_gpio_irq_level_chip;
extern struct irq_chip orion_gpio_irq_chip;
void orion_gpio_irq_handler(int irqoff);

1
arch/avr32/mach-at32ap/include/mach/board.h
View File

@ -116,6 +116,7 @@ struct atmel_nand_data {
int enable_pin; /* chip enable */
int det_pin; /* card detect */
int rdy_pin; /* ready/busy */
u8 rdy_pin_active_low; /* rdy_pin value is inverted */
u8 ale; /* address line number connected to ALE */
u8 cle; /* address line number connected to CLE */
u8 bus_width_16; /* buswidth is 16 bit */

7
arch/ia64/Kconfig
View File

@ -221,7 +221,11 @@ config IA64_HP_SIM
config IA64_XEN_GUEST
bool "Xen guest"
select SWIOTLB
depends on XEN
help
Build a kernel that runs on Xen guest domain. At this moment only
16KB page size in supported.
endchoice
@ -479,8 +483,7 @@ config HOLES_IN_ZONE
default y if VIRTUAL_MEM_MAP
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
depends on NEED_MULTIPLE_NODES
def_bool NUMA && SPARSEMEM
config HAVE_ARCH_NODEDATA_EXTENSION
def_bool y

1601
arch/ia64/configs/xen_domu_defconfig Normal file
View File

File diff suppressed because it is too large Load Diff

4
arch/ia64/include/asm/kvm.h
View File

@ -25,6 +25,10 @@
#include <linux/ioctl.h>
/* Select x86 specific features in <linux/kvm.h> */
#define __KVM_HAVE_IOAPIC
#define __KVM_HAVE_DEVICE_ASSIGNMENT
/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256

4
arch/ia64/include/asm/mmzone.h
View File

@ -31,10 +31,6 @@ static inline int pfn_to_nid(unsigned long pfn)
#endif
}
#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
extern int early_pfn_to_nid(unsigned long pfn);
#endif
#ifdef CONFIG_IA64_DIG /* DIG systems are small */
# define MAX_PHYSNODE_ID 8
# define NR_NODE_MEMBLKS (MAX_NUMNODES * 8)

2
arch/ia64/include/asm/sn/bte.h
View File

@ -39,7 +39,7 @@
/* BTE status register only supports 16 bits for length field */
#define BTE_LEN_BITS (16)
#define BTE_LEN_MASK ((1 << BTE_LEN_BITS) - 1)
#define BTE_MAX_XFER ((1 << BTE_LEN_BITS) * L1_CACHE_BYTES)
#define BTE_MAX_XFER (BTE_LEN_MASK << L1_CACHE_SHIFT)
/* Define hardware */

5
arch/ia64/kernel/smpboot.c
View File

@ -736,14 +736,15 @@ int __cpu_disable(void)
return -EBUSY;
}
cpu_clear(cpu, cpu_online_map);
if (migrate_platform_irqs(cpu)) {
cpu_set(cpu, cpu_online_map);
return (-EBUSY);
return -EBUSY;
}
remove_siblinginfo(cpu);
fixup_irqs();
cpu_clear(cpu, cpu_online_map);
local_flush_tlb_all();
cpu_clear(cpu, cpu_callin_map);
return 0;

4
arch/ia64/kvm/kvm-ia64.c
View File

@ -1337,6 +1337,10 @@ static void kvm_release_vm_pages(struct kvm *kvm)
}
}
void kvm_arch_sync_events(struct kvm *kvm)
{
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvm_iommu_unmap_guest(kvm);

17
arch/ia64/kvm/process.c
View File

@ -455,13 +455,18 @@ fpswa_ret_t vmm_fp_emulate(int fp_fault, void *bundle, unsigned long *ipsr,
if (!vmm_fpswa_interface)
return (fpswa_ret_t) {-1, 0, 0, 0};
/*
* Just let fpswa driver to use hardware fp registers.
* No fp register is valid in memory.
*/
memset(&fp_state, 0, sizeof(fp_state_t));
/*
* compute fp_state. only FP registers f6 - f11 are used by the
* vmm, so set those bits in the mask and set the low volatile
* pointer to point to these registers.
*/
fp_state.bitmask_low64 = 0xfc0; /* bit6..bit11 */
fp_state.fp_state_low_volatile = (fp_state_low_volatile_t *) &regs->f6;
/*
* unsigned long (*EFI_FPSWA) (
* unsigned long trap_type,
* void *Bundle,
@ -545,10 +550,6 @@ void reflect_interruption(u64 ifa, u64 isr, u64 iim,
status = vmm_handle_fpu_swa(0, regs, isr);
if (!status)
return ;
else if (-EAGAIN == status) {
vcpu_decrement_iip(vcpu);
return ;
}
break;
}

4
arch/ia64/mm/numa.c
View File

@ -58,7 +58,7 @@ paddr_to_nid(unsigned long paddr)
* SPARSEMEM to allocate the SPARSEMEM sectionmap on the NUMA node where
* the section resides.
*/
int early_pfn_to_nid(unsigned long pfn)
int __meminit __early_pfn_to_nid(unsigned long pfn)
{
int i, section = pfn >> PFN_SECTION_SHIFT, ssec, esec;
@ -70,7 +70,7 @@ int early_pfn_to_nid(unsigned long pfn)
return node_memblk[i].nid;
}
return 0;
return -1;
}
#ifdef CONFIG_MEMORY_HOTPLUG

7
arch/ia64/sn/kernel/bte.c
View File

@ -97,9 +97,10 @@ bte_result_t bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
return BTE_SUCCESS;
}
BUG_ON((len & L1_CACHE_MASK) ||
(src & L1_CACHE_MASK) || (dest & L1_CACHE_MASK));
BUG_ON(!(len < ((BTE_LEN_MASK + 1) << L1_CACHE_SHIFT)));
BUG_ON(len & L1_CACHE_MASK);
BUG_ON(src & L1_CACHE_MASK);
BUG_ON(dest & L1_CACHE_MASK);
BUG_ON(len > BTE_MAX_XFER);
/*
* Start with interface corresponding to cpu number

3
arch/ia64/xen/Kconfig
View File

@ -8,8 +8,7 @@ config XEN
depends on PARAVIRT && MCKINLEY && IA64_PAGE_SIZE_16KB && EXPERIMENTAL
select XEN_XENCOMM
select NO_IDLE_HZ
# those are required to save/restore.
# followings are required to save/restore.
select ARCH_SUSPEND_POSSIBLE
select SUSPEND
select PM_SLEEP

4
arch/ia64/xen/xen_pv_ops.c
View File

@ -153,7 +153,7 @@ xen_post_smp_prepare_boot_cpu(void)
xen_setup_vcpu_info_placement();
}
static const struct pv_init_ops xen_init_ops __initdata = {
static const struct pv_init_ops xen_init_ops __initconst = {
.banner = xen_banner,
.reserve_memory = xen_reserve_memory,
@ -337,7 +337,7 @@ xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
}
static const struct pv_iosapic_ops xen_iosapic_ops __initdata = {
static const struct pv_iosapic_ops xen_iosapic_ops __initconst = {
.pcat_compat_init = xen_pcat_compat_init,
.__get_irq_chip = xen_iosapic_get_irq_chip,

16
arch/m68k/atari/ataints.c
View File

@ -187,8 +187,8 @@ __asm__ (__ALIGN_STR "\n" \
" jbra ret_from_interrupt\n" \
: : "i" (&kstat_cpu(0).irqs[n+8]), "i" (&irq_handler[n+8]), \
"n" (PT_OFF_SR), "n" (n), \
"i" (n & 8 ? (n & 16 ? &tt_mfp.int_mk_a : &mfp.int_mk_a) \
: (n & 16 ? &tt_mfp.int_mk_b : &mfp.int_mk_b)), \
"i" (n & 8 ? (n & 16 ? &tt_mfp.int_mk_a : &st_mfp.int_mk_a) \
: (n & 16 ? &tt_mfp.int_mk_b : &st_mfp.int_mk_b)), \
"m" (preempt_count()), "di" (HARDIRQ_OFFSET) \
); \
for (;;); /* fake noreturn */ \
@ -366,14 +366,14 @@ void __init atari_init_IRQ(void)
/* Initialize the MFP(s) */
#ifdef ATARI_USE_SOFTWARE_EOI
mfp.vec_adr = 0x48; /* Software EOI-Mode */
st_mfp.vec_adr = 0x48; /* Software EOI-Mode */
#else
mfp.vec_adr = 0x40; /* Automatic EOI-Mode */
st_mfp.vec_adr = 0x40; /* Automatic EOI-Mode */
#endif
mfp.int_en_a = 0x00; /* turn off MFP-Ints */
mfp.int_en_b = 0x00;
mfp.int_mk_a = 0xff; /* no Masking */
mfp.int_mk_b = 0xff;
st_mfp.int_en_a = 0x00; /* turn off MFP-Ints */
st_mfp.int_en_b = 0x00;
st_mfp.int_mk_a = 0xff; /* no Masking */
st_mfp.int_mk_b = 0xff;
if (ATARIHW_PRESENT(TT_MFP)) {
#ifdef ATARI_USE_SOFTWARE_EOI

4
arch/m68k/atari/atakeyb.c
View File

@ -609,10 +609,10 @@ int atari_keyb_init(void)
ACIA_RHTID : 0);
/* make sure the interrupt line is up */
} while ((mfp.par_dt_reg & 0x10) == 0);
} while ((st_mfp.par_dt_reg & 0x10) == 0);
/* enable ACIA Interrupts */
mfp.active_edge &= ~0x10;
st_mfp.active_edge &= ~0x10;
atari_turnon_irq(IRQ_MFP_ACIA);
ikbd_self_test = 1;

2
arch/m68k/atari/config.c
View File

@ -258,7 +258,7 @@ void __init config_atari(void)
printk("STND_SHIFTER ");
}
}
if (hwreg_present(&mfp.par_dt_reg)) {
if (hwreg_present(&st_mfp.par_dt_reg)) {
ATARIHW_SET(ST_MFP);
printk("ST_MFP ");
}

22
arch/m68k/atari/debug.c
View File

@ -34,9 +34,9 @@ static struct console atari_console_driver = {
static inline void ata_mfp_out(char c)
{
while (!(mfp.trn_stat & 0x80)) /* wait for tx buf empty */
while (!(st_mfp.trn_stat & 0x80)) /* wait for tx buf empty */
barrier();
mfp.usart_dta = c;
st_mfp.usart_dta = c;
}
static void atari_mfp_console_write(struct console *co, const char *str,
@ -91,7 +91,7 @@ static int ata_par_out(char c)
/* This a some-seconds timeout in case no printer is connected */
unsigned long i = loops_per_jiffy > 1 ? loops_per_jiffy : 10000000/HZ;
while ((mfp.par_dt_reg & 1) && --i) /* wait for BUSY == L */
while ((st_mfp.par_dt_reg & 1) && --i) /* wait for BUSY == L */
;
if (!i)
return 0;
@ -131,9 +131,9 @@ static void atari_par_console_write(struct console *co, const char *str,
#if 0
int atari_mfp_console_wait_key(struct console *co)
{
while (!(mfp.rcv_stat & 0x80)) /* wait for rx buf filled */
while (!(st_mfp.rcv_stat & 0x80)) /* wait for rx buf filled */
barrier();
return mfp.usart_dta;
return st_mfp.usart_dta;
}
int atari_scc_console_wait_key(struct console *co)
@ -175,12 +175,12 @@ static void __init atari_init_mfp_port(int cflag)
baud = B9600; /* use default 9600bps for non-implemented rates */
baud -= B1200; /* baud_table[] starts at 1200bps */
mfp.trn_stat &= ~0x01; /* disable TX */
mfp.usart_ctr = parity | csize | 0x88; /* 1:16 clk mode, 1 stop bit */
mfp.tim_ct_cd &= 0x70; /* stop timer D */
mfp.tim_dt_d = baud_table[baud];
mfp.tim_ct_cd |= 0x01; /* start timer D, 1:4 */
mfp.trn_stat |= 0x01; /* enable TX */
st_mfp.trn_stat &= ~0x01; /* disable TX */
st_mfp.usart_ctr = parity | csize | 0x88; /* 1:16 clk mode, 1 stop bit */
st_mfp.tim_ct_cd &= 0x70; /* stop timer D */
st_mfp.tim_dt_d = baud_table[baud];
st_mfp.tim_ct_cd |= 0x01; /* start timer D, 1:4 */
st_mfp.trn_stat |= 0x01; /* enable TX */
}
#define SCC_WRITE(reg, val) \

8
arch/m68k/atari/time.c
View File

@ -27,9 +27,9 @@ void __init
atari_sched_init(irq_handler_t timer_routine)
{
/* set Timer C data Register */
mfp.tim_dt_c = INT_TICKS;
st_mfp.tim_dt_c = INT_TICKS;
/* start timer C, div = 1:100 */
mfp.tim_ct_cd = (mfp.tim_ct_cd & 15) | 0x60;
st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 15) | 0x60;
/* install interrupt service routine for MFP Timer C */
if (request_irq(IRQ_MFP_TIMC, timer_routine, IRQ_TYPE_SLOW,
"timer", timer_routine))
@ -46,11 +46,11 @@ unsigned long atari_gettimeoffset (void)
unsigned long ticks, offset = 0;
/* read MFP timer C current value */
ticks = mfp.tim_dt_c;
ticks = st_mfp.tim_dt_c;
/* The probability of underflow is less than 2% */
if (ticks > INT_TICKS - INT_TICKS / 50)
/* Check for pending timer interrupt */
if (mfp.int_pn_b & (1 << 5))
if (st_mfp.int_pn_b & (1 << 5))
offset = TICK_SIZE;
ticks = INT_TICKS - ticks;

4
arch/m68k/include/asm/atarihw.h
View File

@ -113,7 +113,7 @@ extern struct atari_hw_present atari_hw_present;
* of nops on various machines. Somebody claimed that the tstb takes 600 ns.
*/
#define MFPDELAY() \
__asm__ __volatile__ ( "tstb %0" : : "m" (mfp.par_dt_reg) : "cc" );
__asm__ __volatile__ ( "tstb %0" : : "m" (st_mfp.par_dt_reg) : "cc" );
/* Do cache push/invalidate for DMA read/write. This function obeys the
* snooping on some machines (Medusa) and processors: The Medusa itself can
@ -565,7 +565,7 @@ struct MFP
u_char char_dummy23;
u_char usart_dta;
};
# define mfp ((*(volatile struct MFP*)MFP_BAS))
# define st_mfp ((*(volatile struct MFP*)MFP_BAS))
/* TT's second MFP */

6
arch/m68k/include/asm/atariints.h
View File

@ -113,7 +113,7 @@ static inline int get_mfp_bit( unsigned irq, int type )
{ unsigned char mask, *reg;
mask = 1 << (irq & 7);
reg = (unsigned char *)&mfp.int_en_a + type*4 +
reg = (unsigned char *)&st_mfp.int_en_a + type*4 +
((irq & 8) >> 2) + (((irq-8) & 16) << 3);
return( *reg & mask );
}
@ -123,7 +123,7 @@ static inline void set_mfp_bit( unsigned irq, int type )
{ unsigned char mask, *reg;
mask = 1 << (irq & 7);
reg = (unsigned char *)&mfp.int_en_a + type*4 +
reg = (unsigned char *)&st_mfp.int_en_a + type*4 +
((irq & 8) >> 2) + (((irq-8) & 16) << 3);
__asm__ __volatile__ ( "orb %0,%1"
: : "di" (mask), "m" (*reg) : "memory" );
@ -134,7 +134,7 @@ static inline void clear_mfp_bit( unsigned irq, int type )
{ unsigned char mask, *reg;
mask = ~(1 << (irq & 7));
reg = (unsigned char *)&mfp.int_en_a + type*4 +
reg = (unsigned char *)&st_mfp.int_en_a + type*4 +
((irq & 8) >> 2) + (((irq-8) & 16) << 3);
if (type == MFP_PENDING || type == MFP_SERVICE)
__asm__ __volatile__ ( "moveb %0,%1"

1
arch/mn10300/Kconfig
View File

@ -7,6 +7,7 @@ mainmenu "Linux Kernel Configuration"
config MN10300
def_bool y
select HAVE_OPROFILE
config AM33
def_bool y

2
arch/mn10300/unit-asb2305/pci.c
View File

@ -173,7 +173,7 @@ static int pci_ampci_write_config_byte(struct pci_bus *bus, unsigned int devfn,
BRIDGEREGB(where) = value;
} else {
if (bus->number == 0 &&
(devfn == PCI_DEVFN(2, 0) && devfn == PCI_DEVFN(3, 0))
(devfn == PCI_DEVFN(2, 0) || devfn == PCI_DEVFN(3, 0))
)
__pcidebug("<= %02x", bus, devfn, where, value);
CONFIG_ADDRESS = CONFIG_CMD(bus, devfn, where);

2
arch/powerpc/include/asm/pgtable-4k.h
View File

@ -60,7 +60,7 @@
/* It should be preserving the high 48 bits and then specifically */
/* preserving _PAGE_SECONDARY | _PAGE_GROUP_IX */
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | \
_PAGE_HPTEFLAGS)
_PAGE_HPTEFLAGS | _PAGE_SPECIAL)
/* Bits to mask out from a PMD to get to the PTE page */
#define PMD_MASKED_BITS 0

2
arch/powerpc/include/asm/pgtable-64k.h
View File

@ -114,7 +114,7 @@ static inline struct subpage_prot_table *pgd_subpage_prot(pgd_t *pgd)
* pgprot changes
*/
#define _PAGE_CHG_MASK (PTE_RPN_MASK | _PAGE_HPTEFLAGS | _PAGE_DIRTY | \
_PAGE_ACCESSED)
_PAGE_ACCESSED | _PAGE_SPECIAL)
/* Bits to mask out from a PMD to get to the PTE page */
#define PMD_MASKED_BITS 0x1ff

3
arch/powerpc/include/asm/pgtable-ppc32.h
View File

@ -429,7 +429,8 @@ extern int icache_44x_need_flush;
#define PMD_PAGE_SIZE(pmd) bad_call_to_PMD_PAGE_SIZE()
#endif
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | \
_PAGE_SPECIAL)
#define PAGE_PROT_BITS (_PAGE_GUARDED | _PAGE_COHERENT | _PAGE_NO_CACHE | \

7
arch/powerpc/kernel/align.c
View File

@ -646,11 +646,16 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg,
unsigned int areg, struct pt_regs *regs,
unsigned int flags, unsigned int length)
{
char *ptr = (char *) &current->thread.TS_FPR(reg);
char *ptr;
int ret = 0;
flush_vsx_to_thread(current);
if (reg < 32)
ptr = (char *) &current->thread.TS_FPR(reg);
else
ptr = (char *) &current->thread.vr[reg - 32];
if (flags & ST)
ret = __copy_to_user(addr, ptr, length);
else {

4
arch/powerpc/kvm/powerpc.c
View File

@ -125,6 +125,10 @@ static void kvmppc_free_vcpus(struct kvm *kvm)
}
}
void kvm_arch_sync_events(struct kvm *kvm)
{
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvmppc_free_vcpus(kvm);

5
arch/powerpc/mm/numa.c
View File

@ -19,6 +19,7 @@
#include <linux/notifier.h>
#include <linux/lmb.h>
#include <linux/of.h>
#include <linux/pfn.h>
#include <asm/sparsemem.h>
#include <asm/prom.h>
#include <asm/system.h>
@ -882,7 +883,7 @@ static void mark_reserved_regions_for_nid(int nid)
unsigned long physbase = lmb.reserved.region[i].base;
unsigned long size = lmb.reserved.region[i].size;
unsigned long start_pfn = physbase >> PAGE_SHIFT;
unsigned long end_pfn = ((physbase + size) >> PAGE_SHIFT);
unsigned long end_pfn = PFN_UP(physbase + size);
struct node_active_region node_ar;
unsigned long node_end_pfn = node->node_start_pfn +
node->node_spanned_pages;
@ -908,7 +909,7 @@ static void mark_reserved_regions_for_nid(int nid)
*/
if (end_pfn > node_ar.end_pfn)
reserve_size = (node_ar.end_pfn << PAGE_SHIFT)
- (start_pfn << PAGE_SHIFT);
- physbase;
/*
* Only worry about *this* node, others may not
* yet have valid NODE_DATA().

2
arch/powerpc/platforms/ps3/mm.c
View File

@ -328,7 +328,7 @@ static int __init ps3_mm_add_memory(void)
return result;
}
core_initcall(ps3_mm_add_memory);
device_initcall(ps3_mm_add_memory);
/*============================================================================*/
/* dma routines */

2
arch/s390/include/asm/cputime.h
View File

@ -145,7 +145,7 @@ cputime_to_timeval(const cputime_t cputime, struct timeval *value)
value->tv_usec = rp.subreg.even / 4096;
value->tv_sec = rp.subreg.odd;
#else
value->tv_usec = cputime % 4096000000ULL;
value->tv_usec = (cputime % 4096000000ULL) / 4096;
value->tv_sec = cputime / 4096000000ULL;
#endif
}

2
arch/s390/include/asm/setup.h
View File

@ -43,6 +43,8 @@ struct mem_chunk {
extern struct mem_chunk memory_chunk[];
extern unsigned long real_memory_size;
extern int memory_end_set;
extern unsigned long memory_end;
void detect_memory_layout(struct mem_chunk chunk[]);

9
arch/s390/kernel/setup.c
View File

@ -82,7 +82,9 @@ char elf_platform[ELF_PLATFORM_SIZE];
struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS];
volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
static unsigned long __initdata memory_end;
int __initdata memory_end_set;
unsigned long __initdata memory_end;
/*
* This is set up by the setup-routine at boot-time
@ -281,6 +283,7 @@ void (*pm_power_off)(void) = machine_power_off;
static int __init early_parse_mem(char *p)
{
memory_end = memparse(p, &p);
memory_end_set = 1;
return 0;
}
early_param("mem", early_parse_mem);
@ -508,8 +511,10 @@ static void __init setup_memory_end(void)
int i;
#if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE)
if (ipl_info.type == IPL_TYPE_FCP_DUMP)
if (ipl_info.type == IPL_TYPE_FCP_DUMP) {
memory_end = ZFCPDUMP_HSA_SIZE;
memory_end_set = 1;
}
#endif
memory_size = 0;
memory_end &= PAGE_MASK;

4
arch/s390/kvm/kvm-s390.c
View File

@ -212,6 +212,10 @@ static void kvm_free_vcpus(struct kvm *kvm)
}
}
void kvm_arch_sync_events(struct kvm *kvm)
{
}
void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvm_free_vcpus(kvm);

6
arch/um/drivers/vde_user.c
View File

@ -78,7 +78,7 @@ void vde_init_libstuff(struct vde_data *vpri, struct vde_init *init)
{
struct vde_open_args *args;
vpri->args = kmalloc(sizeof(struct vde_open_args), UM_GFP_KERNEL);
vpri->args = uml_kmalloc(sizeof(struct vde_open_args), UM_GFP_KERNEL);
if (vpri->args == NULL) {
printk(UM_KERN_ERR "vde_init_libstuff - vde_open_args "
"allocation failed");
@ -91,8 +91,8 @@ void vde_init_libstuff(struct vde_data *vpri, struct vde_init *init)
args->group = init->group;
args->mode = init->mode ? init->mode : 0700;
args->port ? printk(UM_KERN_INFO "port %d", args->port) :
printk(UM_KERN_INFO "undefined port");
args->port ? printk("port %d", args->port) :
printk("undefined port");
}
int vde_user_read(void *conn, void *buf, int len)

24
arch/x86/Kconfig.debug
View File

@ -174,28 +174,8 @@ config IOMMU_LEAK
Add a simple leak tracer to the IOMMU code. This is useful when you
are debugging a buggy device driver that leaks IOMMU mappings.
config MMIOTRACE
bool "Memory mapped IO tracing"
depends on DEBUG_KERNEL && PCI
select TRACING
help
Mmiotrace traces Memory Mapped I/O access and is meant for
debugging and reverse engineering. It is called from the ioremap
implementation and works via page faults. Tracing is disabled by
default and can be enabled at run-time.
See Documentation/tracers/mmiotrace.txt.
If you are not helping to develop drivers, say N.
config MMIOTRACE_TEST
tristate "Test module for mmiotrace"
depends on MMIOTRACE && m
help
This is a dumb module for testing mmiotrace. It is very dangerous
as it will write garbage to IO memory starting at a given address.
However, it should be safe to use on e.g. unused portion of VRAM.
Say N, unless you absolutely know what you are doing.
config HAVE_MMIOTRACE_SUPPORT
def_bool y
#
# IO delay types:

7
arch/x86/include/asm/kvm.h
View File

@ -9,6 +9,13 @@
#include <linux/types.h>
#include <linux/ioctl.h>
/* Select x86 specific features in <linux/kvm.h> */
#define __KVM_HAVE_PIT
#define __KVM_HAVE_IOAPIC
#define __KVM_HAVE_DEVICE_ASSIGNMENT
#define __KVM_HAVE_MSI
#define __KVM_HAVE_USER_NMI
/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256

2
arch/x86/include/asm/mmzone_32.h
View File

@ -32,8 +32,6 @@ static inline void get_memcfg_numa(void)
get_memcfg_numa_flat();
}
extern int early_pfn_to_nid(unsigned long pfn);
extern void resume_map_numa_kva(pgd_t *pgd);
#else /* !CONFIG_NUMA */

2
arch/x86/include/asm/mmzone_64.h
View File

@ -40,8 +40,6 @@ static inline __attribute__((pure)) int phys_to_nid(unsigned long addr)
#define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
NODE_DATA(nid)->node_spanned_pages)
extern int early_pfn_to_nid(unsigned long pfn);
#ifdef CONFIG_NUMA_EMU
#define FAKE_NODE_MIN_SIZE (64 * 1024 * 1024)
#define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL))

1
arch/x86/include/asm/page.h
View File

@ -57,7 +57,6 @@ typedef struct { pgdval_t pgd; } pgd_t;
typedef struct { pgprotval_t pgprot; } pgprot_t;
extern int page_is_ram(unsigned long pagenr);
extern int pagerange_is_ram(unsigned long start, unsigned long end);
extern int devmem_is_allowed(unsigned long pagenr);
extern void map_devmem(unsigned long pfn, unsigned long size,
pgprot_t vma_prot);

17
arch/x86/include/asm/paravirt.h
View File

@ -1352,14 +1352,7 @@ static inline void arch_leave_lazy_cpu_mode(void)
PVOP_VCALL0(pv_cpu_ops.lazy_mode.leave);
}
static inline void arch_flush_lazy_cpu_mode(void)
{
if (unlikely(paravirt_get_lazy_mode() == PARAVIRT_LAZY_CPU)) {
arch_leave_lazy_cpu_mode();
arch_enter_lazy_cpu_mode();
}
}
void arch_flush_lazy_cpu_mode(void);
#define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
static inline void arch_enter_lazy_mmu_mode(void)
@ -1372,13 +1365,7 @@ static inline void arch_leave_lazy_mmu_mode(void)
PVOP_VCALL0(pv_mmu_ops.lazy_mode.leave);
}
static inline void arch_flush_lazy_mmu_mode(void)
{
if (unlikely(paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU)) {
arch_leave_lazy_mmu_mode();
arch_enter_lazy_mmu_mode();
}
}
void arch_flush_lazy_mmu_mode(void);
static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
unsigned long phys, pgprot_t flags)

30
arch/x86/kernel/acpi/wakeup_64.S
View File

@ -13,7 +13,6 @@
* Hooray, we are in Long 64-bit mode (but still running in low memory)
*/
ENTRY(wakeup_long64)
wakeup_long64:
movq saved_magic, %rax
movq $0x123456789abcdef0, %rdx
cmpq %rdx, %rax
@ -34,16 +33,12 @@ wakeup_long64:
movq saved_rip, %rax
jmp *%rax
ENDPROC(wakeup_long64)
bogus_64_magic:
jmp bogus_64_magic
.align 2
.p2align 4,,15
.globl do_suspend_lowlevel
.type do_suspend_lowlevel,@function
do_suspend_lowlevel:
.LFB5:
ENTRY(do_suspend_lowlevel)
subq $8, %rsp
xorl %eax, %eax
call save_processor_state
@ -67,7 +62,7 @@ do_suspend_lowlevel:
pushfq
popq pt_regs_flags(%rax)
movq $.L97, saved_rip(%rip)
movq $resume_point, saved_rip(%rip)
movq %rsp, saved_rsp
movq %rbp, saved_rbp
@ -78,14 +73,12 @@ do_suspend_lowlevel:
addq $8, %rsp
movl $3, %edi
xorl %eax, %eax
jmp acpi_enter_sleep_state
.L97:
.p2align 4,,7
.L99:
.align 4
movl $24, %eax
movw %ax, %ds
call acpi_enter_sleep_state
/* in case something went wrong, restore the machine status and go on */
jmp resume_point
.align 4
resume_point:
/* We don't restore %rax, it must be 0 anyway */
movq $saved_context, %rax
movq saved_context_cr4(%rax), %rbx
@ -117,12 +110,9 @@ do_suspend_lowlevel:
xorl %eax, %eax
addq $8, %rsp
jmp restore_processor_state
.LFE5:
.Lfe5:
.size do_suspend_lowlevel, .Lfe5-do_suspend_lowlevel
ENDPROC(do_suspend_lowlevel)
.data
ALIGN
ENTRY(saved_rbp) .quad 0
ENTRY(saved_rsi) .quad 0
ENTRY(saved_rdi) .quad 0

2
arch/x86/kernel/apic.c
View File

@ -862,7 +862,7 @@ void clear_local_APIC(void)
}
/* lets not touch this if we didn't frob it */
#if defined(CONFIG_X86_MCE_P4THERMAL) || defined(X86_MCE_INTEL)
#if defined(CONFIG_X86_MCE_P4THERMAL) || defined(CONFIG_X86_MCE_INTEL)
if (maxlvt >= 5) {
v = apic_read(APIC_LVTTHMR);
apic_write(APIC_LVTTHMR, v | APIC_LVT_MASKED);

4
arch/x86/kernel/apm_32.c
View File

@ -1192,6 +1192,7 @@ static int suspend(int vetoable)
device_suspend(PMSG_SUSPEND);
local_irq_disable();
device_power_down(PMSG_SUSPEND);
sysdev_suspend(PMSG_SUSPEND);
local_irq_enable();
@ -1208,6 +1209,7 @@ static int suspend(int vetoable)
if (err != APM_SUCCESS)
apm_error("suspend", err);
err = (err == APM_SUCCESS) ? 0 : -EIO;
sysdev_resume();
device_power_up(PMSG_RESUME);
local_irq_enable();
device_resume(PMSG_RESUME);
@ -1228,6 +1230,7 @@ static void standby(void)
local_irq_disable();
device_power_down(PMSG_SUSPEND);
sysdev_suspend(PMSG_SUSPEND);
local_irq_enable();
err = set_system_power_state(APM_STATE_STANDBY);
@ -1235,6 +1238,7 @@ static void standby(void)
apm_error("standby", err);
local_irq_disable();
sysdev_resume();
device_power_up(PMSG_RESUME);
local_irq_enable();
}

12
arch/x86/kernel/cpu/cpufreq/powernow-k8.c
View File

@ -1157,8 +1157,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
data->cpu = pol->cpu;
data->currpstate = HW_PSTATE_INVALID;
rc = powernow_k8_cpu_init_acpi(data);
if (rc) {
if (powernow_k8_cpu_init_acpi(data)) {
/*
* Use the PSB BIOS structure. This is only availabe on
* an UP version, and is deprecated by AMD.
@ -1176,17 +1175,20 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
"ACPI maintainers and complain to your BIOS "
"vendor.\n");
#endif
goto err_out;
kfree(data);
return -ENODEV;
}
if (pol->cpu != 0) {
printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
"CPU other than CPU0. Complain to your BIOS "
"vendor.\n");
goto err_out;
kfree(data);
return -ENODEV;
}
rc = find_psb_table(data);
if (rc) {
goto err_out;
kfree(data);
return -ENODEV;
}
/* Take a crude guess here.
* That guess was in microseconds, so multiply with 1000 */

7
arch/x86/kernel/cpu/mcheck/mce_64.c
View File

@ -295,11 +295,11 @@ void do_machine_check(struct pt_regs * regs, long error_code)
* If we know that the error was in user space, send a
* SIGBUS. Otherwise, panic if tolerance is low.
*
* do_exit() takes an awful lot of locks and has a slight
* force_sig() takes an awful lot of locks and has a slight
* risk of deadlocking.
*/
if (user_space) {
do_exit(SIGBUS);
force_sig(SIGBUS, current);
} else if (panic_on_oops || tolerant < 2) {
mce_panic("Uncorrected machine check",
&panicm, mcestart);
@ -490,7 +490,7 @@ static void __cpuinit mce_cpu_quirks(struct cpuinfo_x86 *c)
}
static void __cpuinit mce_cpu_features(struct cpuinfo_x86 *c)
static void mce_cpu_features(struct cpuinfo_x86 *c)
{
switch (c->x86_vendor) {
case X86_VENDOR_INTEL:
@ -734,6 +734,7 @@ __setup("mce=", mcheck_enable);
static int mce_resume(struct sys_device *dev)
{
mce_init(NULL);
mce_cpu_features(&current_cpu_data);
return 0;
}

2
arch/x86/kernel/cpu/mcheck/mce_amd_64.c
View File

@ -121,7 +121,7 @@ static long threshold_restart_bank(void *_tr)
}
/* cpu init entry point, called from mce.c with preempt off */
void __cpuinit mce_amd_feature_init(struct cpuinfo_x86 *c)
void mce_amd_feature_init(struct cpuinfo_x86 *c)
{
unsigned int bank, block;
unsigned int cpu = smp_processor_id();

4
arch/x86/kernel/cpu/mcheck/mce_intel_64.c
View File

@ -30,7 +30,7 @@ asmlinkage void smp_thermal_interrupt(void)
irq_exit();
}
static void __cpuinit intel_init_thermal(struct cpuinfo_x86 *c)
static void intel_init_thermal(struct cpuinfo_x86 *c)
{
u32 l, h;
int tm2 = 0;
@ -84,7 +84,7 @@ static void __cpuinit intel_init_thermal(struct cpuinfo_x86 *c)
return;
}
void __cpuinit mce_intel_feature_init(struct cpuinfo_x86 *c)
void mce_intel_feature_init(struct cpuinfo_x86 *c)
{
intel_init_thermal(c);
}

2
arch/x86/kernel/hpet.c
View File

@ -269,6 +269,8 @@ static void hpet_set_mode(enum clock_event_mode mode,
now = hpet_readl(HPET_COUNTER);
cmp = now + (unsigned long) delta;
cfg = hpet_readl(HPET_Tn_CFG(timer));
/* Make sure we use edge triggered interrupts */
cfg &= ~HPET_TN_LEVEL;
cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC |
HPET_TN_SETVAL | HPET_TN_32BIT;
hpet_writel(cfg, HPET_Tn_CFG(timer));

2
arch/x86/kernel/olpc.c
View File

@ -203,7 +203,7 @@ static void __init platform_detect(void)
static void __init platform_detect(void)
{
/* stopgap until OFW support is added to the kernel */
olpc_platform_info.boardrev = 0xc2;
olpc_platform_info.boardrev = olpc_board(0xc2);
}
#endif

26
arch/x86/kernel/paravirt.c
View File

@ -268,6 +268,32 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
return __get_cpu_var(paravirt_lazy_mode);
}
void arch_flush_lazy_mmu_mode(void)
{
preempt_disable();
if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
WARN_ON(preempt_count() == 1);
arch_leave_lazy_mmu_mode();
arch_enter_lazy_mmu_mode();
}
preempt_enable();
}
void arch_flush_lazy_cpu_mode(void)
{
preempt_disable();
if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_CPU) {
WARN_ON(preempt_count() == 1);
arch_leave_lazy_cpu_mode();
arch_enter_lazy_cpu_mode();
}
preempt_enable();
}
struct pv_info pv_info = {
.name = "bare hardware",
.paravirt_enabled = 0,

3
arch/x86/kernel/process_32.c
View File

@ -104,9 +104,6 @@ void cpu_idle(void)
check_pgt_cache();
rmb();
if (rcu_pending(cpu))
rcu_check_callbacks(cpu, 0);
if (cpu_is_offline(cpu))
play_dead();

16
arch/x86/kernel/ptrace.c
View File

@ -810,12 +810,16 @@ static void ptrace_bts_untrace(struct task_struct *child)
static void ptrace_bts_detach(struct task_struct *child)
{
if (unlikely(child->bts)) {
ds_release_bts(child->bts);
child->bts = NULL;
ptrace_bts_free_buffer(child);
}
/*
* Ptrace_detach() races with ptrace_untrace() in case
* the child dies and is reaped by another thread.
*
* We only do the memory accounting at this point and
* leave the buffer deallocation and the bts tracer
* release to ptrace_bts_untrace() which will be called
* later on with tasklist_lock held.
*/
release_locked_buffer(child->bts_buffer, child->bts_size);
}
#else
static inline void ptrace_bts_fork(struct task_struct *tsk) {}

2
arch/x86/kernel/time_64.c
View File

@ -115,7 +115,7 @@ unsigned long __init calibrate_cpu(void)
static struct irqaction irq0 = {
.handler = timer_interrupt,
.flags = IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING,
.flags = IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING | IRQF_TIMER,
.mask = CPU_MASK_NONE,
.name = "timer"
};

10
arch/x86/kernel/traps.c
View File

@ -99,6 +99,12 @@ static inline void preempt_conditional_sti(struct pt_regs *regs)
local_irq_enable();
}
static inline void conditional_cli(struct pt_regs *regs)
{
if (regs->flags & X86_EFLAGS_IF)
local_irq_disable();
}
static inline void preempt_conditional_cli(struct pt_regs *regs)
{
if (regs->flags & X86_EFLAGS_IF)
@ -626,8 +632,10 @@ clear_dr7:
#ifdef CONFIG_X86_32
debug_vm86:
/* reenable preemption: handle_vm86_trap() might sleep */
dec_preempt_count();
handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code, 1);
preempt_conditional_cli(regs);
conditional_cli(regs);
return;
#endif

7
arch/x86/kernel/vmiclock_32.c
View File

@ -202,7 +202,7 @@ static irqreturn_t vmi_timer_interrupt(int irq, void *dev_id)
static struct irqaction vmi_clock_action = {
.name = "vmi-timer",
.handler = vmi_timer_interrupt,
.flags = IRQF_DISABLED | IRQF_NOBALANCING,
.flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_TIMER,
.mask = CPU_MASK_ALL,
};
@ -283,10 +283,13 @@ void __devinit vmi_time_ap_init(void)
#endif
/** vmi clocksource */
static struct clocksource clocksource_vmi;
static cycle_t read_real_cycles(void)
{
return vmi_timer_ops.get_cycle_counter(VMI_CYCLES_REAL);
cycle_t ret = (cycle_t)vmi_timer_ops.get_cycle_counter(VMI_CYCLES_REAL);
return ret >= clocksource_vmi.cycle_last ?
ret : clocksource_vmi.cycle_last;
}
static struct clocksource clocksource_vmi = {

2
arch/x86/kvm/i8254.c
View File

@ -207,7 +207,7 @@ static int __pit_timer_fn(struct kvm_kpit_state *ps)
hrtimer_add_expires_ns(&pt->timer, pt->period);
pt->scheduled = hrtimer_get_expires_ns(&pt->timer);
if (pt->period)
ps->channels[0].count_load_time = hrtimer_get_expires(&pt->timer);
ps->channels[0].count_load_time = ktime_get();
return (pt->period == 0 ? 0 : 1);
}

7
arch/x86/kvm/irq.c
View File

@ -87,13 +87,6 @@ void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu)
}
EXPORT_SYMBOL_GPL(kvm_inject_pending_timer_irqs);
void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
{
kvm_apic_timer_intr_post(vcpu, vec);
/* TODO: PIT, RTC etc. */
}
EXPORT_SYMBOL_GPL(kvm_timer_intr_post);
void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
{
__kvm_migrate_apic_timer(vcpu);

1
arch/x86/kvm/irq.h
View File

@ -89,7 +89,6 @@ static inline int irqchip_in_kernel(struct kvm *kvm)
void kvm_pic_reset(struct kvm_kpic_state *s);
void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu);

64
arch/x86/kvm/lapic.c
View File

@ -35,6 +35,12 @@
#include "kvm_cache_regs.h"
#include "irq.h"
#ifndef CONFIG_X86_64
#define mod_64(x, y) ((x) - (y) * div64_u64(x, y))
#else
#define mod_64(x, y) ((x) % (y))
#endif
#define PRId64 "d"
#define PRIx64 "llx"
#define PRIu64 "u"
@ -511,52 +517,22 @@ static void apic_send_ipi(struct kvm_lapic *apic)
static u32 apic_get_tmcct(struct kvm_lapic *apic)
{
u64 counter_passed;
ktime_t passed, now;
ktime_t remaining;
s64 ns;
u32 tmcct;
ASSERT(apic != NULL);
now = apic->timer.dev.base->get_time();
tmcct = apic_get_reg(apic, APIC_TMICT);
/* if initial count is 0, current count should also be 0 */
if (tmcct == 0)
if (apic_get_reg(apic, APIC_TMICT) == 0)
return 0;
if (unlikely(ktime_to_ns(now) <=
ktime_to_ns(apic->timer.last_update))) {
/* Wrap around */
passed = ktime_add(( {
(ktime_t) {
.tv64 = KTIME_MAX -
(apic->timer.last_update).tv64}; }
), now);
apic_debug("time elapsed\n");
} else
passed = ktime_sub(now, apic->timer.last_update);
remaining = hrtimer_expires_remaining(&apic->timer.dev);
if (ktime_to_ns(remaining) < 0)
remaining = ktime_set(0, 0);
counter_passed = div64_u64(ktime_to_ns(passed),
(APIC_BUS_CYCLE_NS * apic->timer.divide_count));
if (counter_passed > tmcct) {
if (unlikely(!apic_lvtt_period(apic))) {
/* one-shot timers stick at 0 until reset */
tmcct = 0;
} else {
/*
* periodic timers reset to APIC_TMICT when they
* hit 0. The while loop simulates this happening N
* times. (counter_passed %= tmcct) would also work,
* but might be slower or not work on 32-bit??
*/
while (counter_passed > tmcct)
counter_passed -= tmcct;
tmcct -= counter_passed;
}
} else {
tmcct -= counter_passed;
}
ns = mod_64(ktime_to_ns(remaining), apic->timer.period);
tmcct = div64_u64(ns, (APIC_BUS_CYCLE_NS * apic->timer.divide_count));
return tmcct;
}
@ -653,8 +629,6 @@ static void start_apic_timer(struct kvm_lapic *apic)
{
ktime_t now = apic->timer.dev.base->get_time();
apic->timer.last_update = now;
apic->timer.period = apic_get_reg(apic, APIC_TMICT) *
APIC_BUS_CYCLE_NS * apic->timer.divide_count;
atomic_set(&apic->timer.pending, 0);
@ -1110,16 +1084,6 @@ void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu)
}
}
void kvm_apic_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
{
struct kvm_lapic *apic = vcpu->arch.apic;
if (apic && apic_lvt_vector(apic, APIC_LVTT) == vec)
apic->timer.last_update = ktime_add_ns(
apic->timer.last_update,
apic->timer.period);
}
int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu)
{
int vector = kvm_apic_has_interrupt(vcpu);

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