summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorJames Morris <jmorris@namei.org>2008-09-21 17:41:56 -0700
committerJames Morris <jmorris@namei.org>2008-09-21 17:41:56 -0700
commitab2b49518e743962f71b94246855c44ee9cf52cc (patch)
tree26b260a350f0a0a0d19b558bf147b812e3a1564c /Documentation
parentf058925b201357fba48d56cc9c1719ae274b2022 (diff)
parent72d31053f62c4bc464c2783974926969614a8649 (diff)
Merge branch 'master' into next
Conflicts: MAINTAINERS Thanks for breaking my tree :-) Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-firmware-sgi_uv27
-rw-r--r--Documentation/ABI/testing/sysfs-gpio26
-rw-r--r--Documentation/cpusets.txt18
-rw-r--r--Documentation/dontdiff2
-rw-r--r--Documentation/feature-removal-schedule.txt8
-rw-r--r--Documentation/filesystems/Locking15
-rw-r--r--Documentation/filesystems/ntfs.txt4
-rw-r--r--Documentation/filesystems/proc.txt21
-rw-r--r--Documentation/laptops/thinkpad-acpi.txt11
-rw-r--r--Documentation/video4linux/CARDLIST.au08281
-rw-r--r--Documentation/video4linux/gspca.txt29
11 files changed, 120 insertions, 42 deletions
diff --git a/Documentation/ABI/testing/sysfs-firmware-sgi_uv b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
new file mode 100644
index 000000000000..4573fd4b7876
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-sgi_uv
@@ -0,0 +1,27 @@
+What: /sys/firmware/sgi_uv/
+Date: August 2008
+Contact: Russ Anderson <rja@sgi.com>
+Description:
+ The /sys/firmware/sgi_uv directory contains information
+ about the SGI UV platform.
+
+ Under that directory are a number of files:
+
+ partition_id
+ coherence_id
+
+ The partition_id entry contains the partition id.
+ SGI UV systems can be partitioned into multiple physical
+ machines, which each partition running a unique copy
+ of the operating system. Each partition will have a unique
+ partition id. To display the partition id, use the command:
+
+ cat /sys/firmware/sgi_uv/partition_id
+
+ The coherence_id entry contains the coherence id.
+ A partitioned SGI UV system can have one or more coherence
+ domain. The coherence id indicates which coherence domain
+ this partition is in. To display the coherence id, use the
+ command:
+
+ cat /sys/firmware/sgi_uv/coherence_id
diff --git a/Documentation/ABI/testing/sysfs-gpio b/Documentation/ABI/testing/sysfs-gpio
new file mode 100644
index 000000000000..8aab8092ad35
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-gpio
@@ -0,0 +1,26 @@
+What: /sys/class/gpio/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Brownell <dbrownell@users.sourceforge.net>
+Description:
+
+ As a Kconfig option, individual GPIO signals may be accessed from
+ userspace. GPIOs are only made available to userspace by an explicit
+ "export" operation. If a given GPIO is not claimed for use by
+ kernel code, it may be exported by userspace (and unexported later).
+ Kernel code may export it for complete or partial access.
+
+ GPIOs are identified as they are inside the kernel, using integers in
+ the range 0..INT_MAX. See Documentation/gpio.txt for more information.
+
+ /sys/class/gpio
+ /export ... asks the kernel to export a GPIO to userspace
+ /unexport ... to return a GPIO to the kernel
+ /gpioN ... for each exported GPIO #N
+ /value ... always readable, writes fail for input GPIOs
+ /direction ... r/w as: in, out (default low); write: high, low
+ /gpiochipN ... for each gpiochip; #N is its first GPIO
+ /base ... (r/o) same as N
+ /label ... (r/o) descriptive, not necessarily unique
+ /ngpio ... (r/o) number of GPIOs; numbered N to N + (ngpio - 1)
+
diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt
index 1f5a924d1e56..47e568a9370a 100644
--- a/Documentation/cpusets.txt
+++ b/Documentation/cpusets.txt
@@ -635,14 +635,16 @@ prior 'mems' setting, will not be moved.
There is an exception to the above. If hotplug functionality is used
to remove all the CPUs that are currently assigned to a cpuset,
-then the kernel will automatically update the cpus_allowed of all
-tasks attached to CPUs in that cpuset to allow all CPUs. When memory
-hotplug functionality for removing Memory Nodes is available, a
-similar exception is expected to apply there as well. In general,
-the kernel prefers to violate cpuset placement, over starving a task
-that has had all its allowed CPUs or Memory Nodes taken offline. User
-code should reconfigure cpusets to only refer to online CPUs and Memory
-Nodes when using hotplug to add or remove such resources.
+then all the tasks in that cpuset will be moved to the nearest ancestor
+with non-empty cpus. But the moving of some (or all) tasks might fail if
+cpuset is bound with another cgroup subsystem which has some restrictions
+on task attaching. In this failing case, those tasks will stay
+in the original cpuset, and the kernel will automatically update
+their cpus_allowed to allow all online CPUs. When memory hotplug
+functionality for removing Memory Nodes is available, a similar exception
+is expected to apply there as well. In general, the kernel prefers to
+violate cpuset placement, over starving a task that has had all
+its allowed CPUs or Memory Nodes taken offline.
There is a second exception to the above. GFP_ATOMIC requests are
kernel internal allocations that must be satisfied, immediately.
diff --git a/Documentation/dontdiff b/Documentation/dontdiff
index 881e6dd03aea..27809357da58 100644
--- a/Documentation/dontdiff
+++ b/Documentation/dontdiff
@@ -5,6 +5,8 @@
*.css
*.dvi
*.eps
+*.fw.gen.S
+*.fw
*.gif
*.grep
*.grp
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index eb1a47b97427..83c88cae1eda 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -322,3 +322,11 @@ Why: Accounting can now be enabled/disabled without kernel recompilation.
controlled by a kernel/module/sysfs/sysctl parameter.
Who: Krzysztof Piotr Oledzki <ole@ans.pl>
+---------------------------
+
+What: ide-scsi (BLK_DEV_IDESCSI)
+When: 2.6.29
+Why: The 2.6 kernel supports direct writing to ide CD drives, which
+ eliminates the need for ide-scsi. The new method is more
+ efficient in every way.
+Who: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index 680fb566b928..8362860e21a7 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -144,8 +144,8 @@ prototypes:
void (*kill_sb) (struct super_block *);
locking rules:
may block BKL
-get_sb yes yes
-kill_sb yes yes
+get_sb yes no
+kill_sb yes no
->get_sb() returns error or 0 with locked superblock attached to the vfsmount
(exclusive on ->s_umount).
@@ -409,12 +409,12 @@ ioctl: yes (see below)
unlocked_ioctl: no (see below)
compat_ioctl: no
mmap: no
-open: maybe (see below)
+open: no
flush: no
release: no
fsync: no (see below)
aio_fsync: no
-fasync: yes (see below)
+fasync: no
lock: yes
readv: no
writev: no
@@ -431,13 +431,6 @@ For many filesystems, it is probably safe to acquire the inode
semaphore. Note some filesystems (i.e. remote ones) provide no
protection for i_size so you will need to use the BKL.
-->open() locking is in-transit: big lock partially moved into the methods.
-The only exception is ->open() in the instances of file_operations that never
-end up in ->i_fop/->proc_fops, i.e. ones that belong to character devices
-(chrdev_open() takes lock before replacing ->f_op and calling the secondary
-method. As soon as we fix the handling of module reference counters all
-instances of ->open() will be called without the BKL.
-
Note: ext2_release() was *the* source of contention on fs-intensive
loads and dropping BKL on ->release() helps to get rid of that (we still
grab BKL for cases when we close a file that had been opened r/w, but that
diff --git a/Documentation/filesystems/ntfs.txt b/Documentation/filesystems/ntfs.txt
index e79ee2db183a..ac2a261c5f7d 100644
--- a/Documentation/filesystems/ntfs.txt
+++ b/Documentation/filesystems/ntfs.txt
@@ -40,7 +40,7 @@ Web site
========
There is plenty of additional information on the linux-ntfs web site
-at http://linux-ntfs.sourceforge.net/
+at http://www.linux-ntfs.org/
The web site has a lot of additional information, such as a comprehensive
FAQ, documentation on the NTFS on-disk format, information on the Linux-NTFS
@@ -272,7 +272,7 @@ And you would know that /dev/hda2 has a size of 37768814 - 4209030 + 1 =
For Win2k and later dynamic disks, you can for example use the ldminfo utility
which is part of the Linux LDM tools (the latest version at the time of
writing is linux-ldm-0.0.8.tar.bz2). You can download it from:
- http://linux-ntfs.sourceforge.net/downloads.html
+ http://www.linux-ntfs.org/
Simply extract the downloaded archive (tar xvjf linux-ldm-0.0.8.tar.bz2), go
into it (cd linux-ldm-0.0.8) and change to the test directory (cd test). You
will find the precompiled (i386) ldminfo utility there. NOTE: You will not be
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 64557821ee59..f566ad9bcb7b 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -1339,6 +1339,25 @@ Enables/Disables the protection of the per-process proc entries "maps" and
"smaps". When enabled, the contents of these files are visible only to
readers that are allowed to ptrace() the given process.
+msgmni
+------
+
+Maximum number of message queue ids on the system.
+This value scales to the amount of lowmem. It is automatically recomputed
+upon memory add/remove or ipc namespace creation/removal.
+When a value is written into this file, msgmni's value becomes fixed, i.e. it
+is not recomputed anymore when one of the above events occurs.
+Use auto_msgmni to change this behavior.
+
+auto_msgmni
+-----------
+
+Enables/Disables automatic recomputing of msgmni upon memory add/remove or
+upon ipc namespace creation/removal (see the msgmni description above).
+Echoing "1" into this file enables msgmni automatic recomputing.
+Echoing "0" turns it off.
+auto_msgmni default value is 1.
+
2.4 /proc/sys/vm - The virtual memory subsystem
-----------------------------------------------
@@ -2394,6 +2413,8 @@ The following 4 memory types are supported:
- (bit 1) anonymous shared memory
- (bit 2) file-backed private memory
- (bit 3) file-backed shared memory
+ - (bit 4) ELF header pages in file-backed private memory areas (it is
+ effective only if the bit 2 is cleared)
Note that MMIO pages such as frame buffer are never dumped and vDSO pages
are always dumped regardless of the bitmask status.
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 02dc748b76c4..71f0fe1fc1b0 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -44,7 +44,7 @@ detailed description):
- LCD brightness control
- Volume control
- Fan control and monitoring: fan speed, fan enable/disable
- - Experimental: WAN enable and disable
+ - WAN enable and disable
A compatibility table by model and feature is maintained on the web
site, http://ibm-acpi.sf.net/. I appreciate any success or failure
@@ -1375,18 +1375,13 @@ with EINVAL, try to set pwm1_enable to 1 and pwm1 to at least 128 (255
would be the safest choice, though).
-EXPERIMENTAL: WAN
------------------
+WAN
+---
procfs: /proc/acpi/ibm/wan
sysfs device attribute: wwan_enable (deprecated)
sysfs rfkill class: switch "tpacpi_wwan_sw"
-This feature is marked EXPERIMENTAL because the implementation
-directly accesses hardware registers and may not work as expected. USE
-WITH CAUTION! To use this feature, you need to supply the
-experimental=1 parameter when loading the module.
-
This feature shows the presence and current state of a W-WAN (Sierra
Wireless EV-DO) device.
diff --git a/Documentation/video4linux/CARDLIST.au0828 b/Documentation/video4linux/CARDLIST.au0828
index eedc399e8deb..aa05e5bb22fb 100644
--- a/Documentation/video4linux/CARDLIST.au0828
+++ b/Documentation/video4linux/CARDLIST.au0828
@@ -3,3 +3,4 @@
2 -> Hauppauge HVR850 (au0828) [2040:7240]
3 -> DViCO FusionHDTV USB (au0828) [0fe9:d620]
4 -> Hauppauge HVR950Q rev xxF8 (au0828) [2040:7201,2040:7211,2040:7281]
+ 5 -> Hauppauge Woodbury (au0828) [2040:8200]
diff --git a/Documentation/video4linux/gspca.txt b/Documentation/video4linux/gspca.txt
index 78a863ab8a5a..0f03900c48fb 100644
--- a/Documentation/video4linux/gspca.txt
+++ b/Documentation/video4linux/gspca.txt
@@ -88,14 +88,14 @@ zc3xx 0471:0325 Philips SPC 200 NC
zc3xx 0471:0326 Philips SPC 300 NC
sonixj 0471:0327 Philips SPC 600 NC
sonixj 0471:0328 Philips SPC 700 NC
-zc3xx 0471:032d Philips spc210nc
-zc3xx 0471:032e Philips spc315nc
-sonixj 0471:0330 Philips SPC 710NC
+zc3xx 0471:032d Philips SPC 210 NC
+zc3xx 0471:032e Philips SPC 315 NC
+sonixj 0471:0330 Philips SPC 710 NC
spca501 0497:c001 Smile International
sunplus 04a5:3003 Benq DC 1300
sunplus 04a5:3008 Benq DC 1500
-sunplus 04a5:300a Benq DC3410
-spca500 04a5:300c Benq DC1016
+sunplus 04a5:300a Benq DC 3410
+spca500 04a5:300c Benq DC 1016
sunplus 04f1:1001 JVC GC A50
spca561 04fc:0561 Flexcam 100
sunplus 04fc:500c Sunplus CA500C
@@ -175,19 +175,21 @@ sunplus 08ca:2060 Aiptek PocketDV5300
tv8532 0923:010f ICM532 cams
mars 093a:050f Mars-Semi Pc-Camera
pac207 093a:2460 PAC207 Qtec Webcam 100
-pac207 093a:2463 Philips spc200nc pac207
+pac207 093a:2463 Philips SPC 220 NC
pac207 093a:2464 Labtec Webcam 1200
pac207 093a:2468 PAC207
pac207 093a:2470 Genius GF112
-pac207 093a:2471 PAC207 Genius VideoCam ge111
-pac207 093a:2472 PAC207 Genius VideoCam ge110
+pac207 093a:2471 Genius VideoCam ge111
+pac207 093a:2472 Genius VideoCam ge110
pac7311 093a:2600 PAC7311 Typhoon
-pac7311 093a:2601 PAC7311 Phillips SPC610NC
+pac7311 093a:2601 Philips SPC 610 NC
pac7311 093a:2603 PAC7312
-pac7311 093a:2608 PAC7311 Trust WB-3300p
-pac7311 093a:260e PAC7311 Gigaware VGA PC Camera, Trust WB-3350p, SIGMA cam 2350
-pac7311 093a:260f PAC7311 SnakeCam
+pac7311 093a:2608 Trust WB-3300p
+pac7311 093a:260e Gigaware VGA PC Camera, Trust WB-3350p, SIGMA cam 2350
+pac7311 093a:260f SnakeCam
pac7311 093a:2621 PAC731x
+pac7311 093a:2624 PAC7302
+pac7311 093a:2626 Labtec 2200
zc3xx 0ac8:0302 Z-star Vimicro zc0302
vc032x 0ac8:0321 Vimicro generic vc0321
vc032x 0ac8:0323 Vimicro Vc0323
@@ -220,6 +222,7 @@ sonixj 0c45:60c0 Sangha Sn535
sonixj 0c45:60ec SN9C105+MO4000
sonixj 0c45:60fb Surfer NoName
sonixj 0c45:60fc LG-LIC300
+sonixj 0c45:6128 Microdia/Sonix SNP325
sonixj 0c45:612a Avant Camera
sonixj 0c45:612c Typhoon Rasy Cam 1.3MPix
sonixj 0c45:6130 Sonix Pccam
@@ -234,7 +237,7 @@ zc3xx 10fd:0128 Typhoon Webshot II USB 300k 0x0128
spca561 10fd:7e50 FlyCam Usb 100
zc3xx 10fd:8050 Typhoon Webshot II USB 300k
spca501 1776:501c Arowana 300K CMOS Camera
-t613 17a1:0128 T613/TAS5130A
+t613 17a1:0128 TASCORP JPEG Webcam, NGS Cyclops
vc032x 17ef:4802 Lenovo Vc0323+MI1310_SOC
pac207 2001:f115 D-Link DSB-C120
spca500 2899:012c Toptro Industrial