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b: refs/heads/master
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  70931: eb897a1
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Linus Torvalds committed Oct 17, 2007
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: ace2e92e193126711cb3a83a3752b2c5b8396950
refs/heads/master: fb9fc395174138983a49f2da982ed14caabbe741
10 changes: 8 additions & 2 deletions trunk/CREDITS
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Expand Up @@ -1165,6 +1165,12 @@ S: 600 North Bell Avenue, Suite 160
S: Carnegie, Pennsylvania 15106-4304
S: USA

N: Kai Germaschewski
E: kai@germaschewski.name
D: Major kbuild rework during the 2.5 cycle
D: ISDN Maintainer
S: USA

N: Philip Gladstone
E: philip@gladstonefamily.net
D: Kernel / timekeeping stuff
Expand Down Expand Up @@ -1933,7 +1939,7 @@ M: seasons@makosteszta.sote.hu
D: Original author of software suspend

N: Jaroslav Kysela
E: perex@suse.cz
E: perex@perex.cz
W: http://www.perex.cz
D: Original Author and Maintainer for HP 10/100 Mbit Network Adapters
D: ISA PnP
Expand Down Expand Up @@ -2702,7 +2708,7 @@ S: Canada K2P 0X8

N: Mikael Pettersson
E: mikpe@it.uu.se
W: http://www.csd.uu.se/~mikpe/
W: http://user.it.uu.se/~mikpe/linux/
D: Miscellaneous fixes

N: Reed H. Petty
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24 changes: 17 additions & 7 deletions trunk/Documentation/00-INDEX
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Expand Up @@ -22,6 +22,8 @@ CodingStyle
- how the boss likes the C code in the kernel to look.
DMA-API.txt
- DMA API, pci_ API & extensions for non-consistent memory machines.
DMA-ISA-LPC.txt
- How to do DMA with ISA (and LPC) devices.
DMA-mapping.txt
- info for PCI drivers using DMA portably across all platforms.
DocBook/
Expand Down Expand Up @@ -50,6 +52,8 @@ README.cycladesZ
- info on Cyclades-Z firmware loading.
SAK.txt
- info on Secure Attention Keys.
SM501.txt
- Silicon Motion SM501 multimedia companion chip
SecurityBugs
- procedure for reporting security bugs found in the kernel.
SubmitChecklist
Expand Down Expand Up @@ -145,7 +149,7 @@ fb/
feature-removal-schedule.txt
- list of files and features that are going to be removed.
filesystems/
- directory with info on the various filesystems that Linux supports.
- info on the vfs and the various filesystems that Linux supports.
firmware_class/
- request_firmware() hotplug interface info.
floppy.txt
Expand Down Expand Up @@ -230,8 +234,6 @@ local_ops.txt
- semantics and behavior of local atomic operations.
lockdep-design.txt
- documentation on the runtime locking correctness validator.
locks.txt
- info on file locking implementations, flock() vs. fcntl(), etc.
logo.gif
- full colour GIF image of Linux logo (penguin - Tux).
logo.txt
Expand All @@ -240,14 +242,14 @@ m68k/
- directory with info about Linux on Motorola 68k architecture.
magic-number.txt
- list of magic numbers used to mark/protect kernel data structures.
mandatory.txt
- info on the Linux implementation of Sys V mandatory file locking.
mca.txt
- info on supporting Micro Channel Architecture (e.g. PS/2) systems.
md.txt
- info on boot arguments for the multiple devices driver.
memory-barriers.txt
- info on Linux kernel memory barriers.
memory-hotplug.txt
- Hotpluggable memory support, how to use and current status.
memory.txt
- info on typical Linux memory problems.
mips/
Expand Down Expand Up @@ -298,6 +300,8 @@ pm.txt
- info on Linux power management support.
pnp.txt
- Linux Plug and Play documentation.
power_supply_class.txt
- Tells userspace about battery, UPS, AC or DC power supply properties
power/
- directory with info on Linux PCI power management.
powerpc/
Expand Down Expand Up @@ -334,8 +338,12 @@ sched-coding.txt
- reference for various scheduler-related methods in the O(1) scheduler.
sched-design.txt
- goals, design and implementation of the Linux O(1) scheduler.
sched-design-CFS.txt
- goals, design and implementation of the Complete Fair Scheduler.
sched-domains.txt
- information on scheduling domains.
sched-nice-design.txt
- How and why the scheduler's nice levels are implemented.
sched-stats.txt
- information on schedstats (Linux Scheduler Statistics).
scsi/
Expand Down Expand Up @@ -380,6 +388,8 @@ stallion.txt
- info on using the Stallion multiport serial driver.
svga.txt
- short guide on selecting video modes at boot via VGA BIOS.
sysfs-rules.txt
- How not to use sysfs.
sx.txt
- info on the Specialix SX/SI multiport serial driver.
sysctl/
Expand Down Expand Up @@ -410,6 +420,8 @@ video4linux/
- directory with info regarding video/TV/radio cards and linux.
vm/
- directory with info on the Linux vm code.
volatile-considered-harmful.txt
- Why the "volatile" type class should not be used
voyager.txt
- guide to running Linux on the Voyager architecture.
w1/
Expand All @@ -418,7 +430,5 @@ watchdog/
- how to auto-reboot Linux if it has "fallen and can't get up". ;-)
x86_64/
- directory with info on Linux support for AMD x86-64 (Hammer) machines.
xterm-linux.xpm
- XPM image of penguin logo (see logo.txt) sitting on an xterm.
zorro.txt
- info on writing drivers for Zorro bus devices found on Amigas.
7 changes: 5 additions & 2 deletions trunk/Documentation/CodingStyle
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Expand Up @@ -77,12 +77,15 @@ Get a decent editor and don't leave whitespace at the end of lines.
Coding style is all about readability and maintainability using commonly
available tools.

The limit on the length of lines is 80 columns and this is a hard limit.
The limit on the length of lines is 80 columns and this is a strongly
preferred limit.

Statements longer than 80 columns will be broken into sensible chunks.
Descendants are always substantially shorter than the parent and are placed
substantially to the right. The same applies to function headers with a long
argument list. Long strings are as well broken into shorter strings.
argument list. Long strings are as well broken into shorter strings. The
only exception to this is where exceeding 80 columns significantly increases
readability and does not hide information.

void fun(int a, int b, int c)
{
Expand Down
24 changes: 2 additions & 22 deletions trunk/Documentation/DMA-mapping.txt
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Expand Up @@ -189,12 +189,6 @@ smaller mask as pci_set_dma_mask(). However for the rare case that a
device driver only uses consistent allocations, one would have to
check the return value from pci_set_consistent_dma_mask().

If your 64-bit device is going to be an enormous consumer of DMA
mappings, this can be problematic since the DMA mappings are a
finite resource on many platforms. Please see the "DAC Addressing
for Address Space Hungry Devices" section near the end of this
document for how to handle this case.

Finally, if your device can only drive the low 24-bits of
address during PCI bus mastering you might do something like:

Expand All @@ -203,8 +197,6 @@ address during PCI bus mastering you might do something like:
"mydev: 24-bit DMA addressing not available.\n");
goto ignore_this_device;
}
[Better use DMA_24BIT_MASK instead of 0x00ffffff.
See linux/include/dma-mapping.h for reference.]

When pci_set_dma_mask() is successful, and returns zero, the PCI layer
saves away this mask you have provided. The PCI layer will use this
Expand Down Expand Up @@ -514,7 +506,7 @@ With scatterlists, you map a region gathered from several regions by:
int i, count = pci_map_sg(dev, sglist, nents, direction);
struct scatterlist *sg;

for (i = 0, sg = sglist; i < count; i++, sg++) {
for_each_sg(sglist, sg, count, i) {
hw_address[i] = sg_dma_address(sg);
hw_len[i] = sg_dma_len(sg);
}
Expand Down Expand Up @@ -652,18 +644,6 @@ It is planned to completely remove virt_to_bus() and bus_to_virt() as
they are entirely deprecated. Some ports already do not provide these
as it is impossible to correctly support them.

64-bit DMA and DAC cycle support

Do you understand all of the text above? Great, then you already
know how to use 64-bit DMA addressing under Linux. Simply make
the appropriate pci_set_dma_mask() calls based upon your cards
capabilities, then use the mapping APIs above.

It is that simple.

Well, not for some odd devices. See the next section for information
about that.

Optimizing Unmap State Space Consumption

On many platforms, pci_unmap_{single,page}() is simply a nop.
Expand Down Expand Up @@ -782,5 +762,5 @@ following people:
Jay Estabrook <Jay.Estabrook@compaq.com>
Thomas Sailer <sailer@ife.ee.ethz.ch>
Andrea Arcangeli <andrea@suse.de>
Jens Axboe <axboe@suse.de>
Jens Axboe <jens.axboe@oracle.com>
David Mosberger-Tang <davidm@hpl.hp.com>
12 changes: 6 additions & 6 deletions trunk/Documentation/DocBook/deviceiobook.tmpl
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Expand Up @@ -85,7 +85,7 @@

<chapter id="mmio">
<title>Memory Mapped IO</title>
<sect1>
<sect1 id="getting_access_to_the_device">
<title>Getting Access to the Device</title>
<para>
The most widely supported form of IO is memory mapped IO.
Expand Down Expand Up @@ -114,7 +114,7 @@
</para>
</sect1>

<sect1>
<sect1 id="accessing_the_device">
<title>Accessing the device</title>
<para>
The part of the interface most used by drivers is reading and
Expand Down Expand Up @@ -272,9 +272,9 @@ CPU B: spin_unlock_irqrestore(&amp;dev_lock, flags)

</chapter>

<chapter>
<chapter id="port_space_accesses">
<title>Port Space Accesses</title>
<sect1>
<sect1 id="port_space_explained">
<title>Port Space Explained</title>

<para>
Expand All @@ -291,7 +291,7 @@ CPU B: spin_unlock_irqrestore(&amp;dev_lock, flags)
</para>

</sect1>
<sect1>
<sect1 id="accessing_port_space">
<title>Accessing Port Space</title>
<para>
Accesses to this space are provided through a set of functions
Expand All @@ -316,7 +316,7 @@ CPU B: spin_unlock_irqrestore(&amp;dev_lock, flags)

<chapter id="pubfunctions">
<title>Public Functions Provided</title>
!Iinclude/asm-i386/io.h
!Iinclude/asm-x86/io_32.h
!Elib/iomap.c
</chapter>

Expand Down
36 changes: 18 additions & 18 deletions trunk/Documentation/DocBook/filesystems.tmpl
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Expand Up @@ -40,25 +40,25 @@

<chapter id="vfs">
<title>The Linux VFS</title>
<sect1><title>The Filesystem types</title>
<sect1 id="the_filesystem_types"><title>The Filesystem types</title>
!Iinclude/linux/fs.h
</sect1>
<sect1><title>The Directory Cache</title>
<sect1 id="the_directory_cache"><title>The Directory Cache</title>
!Efs/dcache.c
!Iinclude/linux/dcache.h
</sect1>
<sect1><title>Inode Handling</title>
<sect1 id="inode_handling"><title>Inode Handling</title>
!Efs/inode.c
!Efs/bad_inode.c
</sect1>
<sect1><title>Registration and Superblocks</title>
<sect1 id="registration_and_superblocks"><title>Registration and Superblocks</title>
!Efs/super.c
</sect1>
<sect1><title>File Locks</title>
<sect1 id="file_locks"><title>File Locks</title>
!Efs/locks.c
!Ifs/locks.c
</sect1>
<sect1><title>Other Functions</title>
<sect1 id="other_functions"><title>Other Functions</title>
!Efs/mpage.c
!Efs/namei.c
!Efs/buffer.c
Expand All @@ -73,11 +73,11 @@
<chapter id="proc">
<title>The proc filesystem</title>

<sect1><title>sysctl interface</title>
<sect1 id="sysctl_interface"><title>sysctl interface</title>
!Ekernel/sysctl.c
</sect1>

<sect1><title>proc filesystem interface</title>
<sect1 id="proc_filesystem_interface"><title>proc filesystem interface</title>
!Ifs/proc/base.c
</sect1>
</chapter>
Expand All @@ -92,7 +92,7 @@
<chapter id="debugfs">
<title>The debugfs filesystem</title>

<sect1><title>debugfs interface</title>
<sect1 id="debugfs_interface"><title>debugfs interface</title>
!Efs/debugfs/inode.c
!Efs/debugfs/file.c
</sect1>
Expand Down Expand Up @@ -134,9 +134,9 @@

<title>The Linux Journalling API</title>

<sect1>
<sect1 id="journaling_overview">
<title>Overview</title>
<sect2>
<sect2 id="journaling_details">
<title>Details</title>
<para>
The journalling layer is easy to use. You need to
Expand Down Expand Up @@ -307,7 +307,7 @@ particular inode.

</sect2>

<sect2>
<sect2 id="jbd_summary">
<title>Summary</title>
<para>
Using the journal is a matter of wrapping the different context changes,
Expand Down Expand Up @@ -349,7 +349,7 @@ an example.

</sect1>

<sect1>
<sect1 id="data_types">
<title>Data Types</title>
<para>
The journalling layer uses typedefs to 'hide' the concrete definitions
Expand All @@ -358,27 +358,27 @@ an example.

Obviously the hiding is not enforced as this is 'C'.
</para>
<sect2><title>Structures</title>
<sect2 id="structures"><title>Structures</title>
!Iinclude/linux/jbd.h
</sect2>
</sect1>

<sect1>
<sect1 id="functions">
<title>Functions</title>
<para>
The functions here are split into two groups those that
affect a journal as a whole, and those which are used to
manage transactions
</para>
<sect2><title>Journal Level</title>
<sect2 id="journal_level"><title>Journal Level</title>
!Efs/jbd/journal.c
!Ifs/jbd/recovery.c
</sect2>
<sect2><title>Transasction Level</title>
<sect2 id="transaction_level"><title>Transasction Level</title>
!Efs/jbd/transaction.c
</sect2>
</sect1>
<sect1>
<sect1 id="see_also">
<title>See also</title>
<para>
<citation>
Expand Down
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