diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-gpio | 26 | ||||
| -rw-r--r-- | Documentation/DMA-mapping.txt | 2 | ||||
| -rw-r--r-- | Documentation/HOWTO | 3 | ||||
| -rw-r--r-- | Documentation/SubmitChecklist | 2 | ||||
| -rw-r--r-- | Documentation/cpusets.txt | 18 | ||||
| -rw-r--r-- | Documentation/feature-removal-schedule.txt | 8 | ||||
| -rw-r--r-- | Documentation/filesystems/Locking | 15 | ||||
| -rw-r--r-- | Documentation/filesystems/proc.txt | 2 | ||||
| -rw-r--r-- | Documentation/ioctl/cdrom.txt | 4 | ||||
| -rw-r--r-- | Documentation/laptops/thinkpad-acpi.txt | 11 | ||||
| -rw-r--r-- | Documentation/sysctl/kernel.txt | 7 | ||||
| -rw-r--r-- | Documentation/usb/anchors.txt | 12 | ||||
| -rw-r--r-- | Documentation/video4linux/CARDLIST.au0828 | 1 | ||||
| -rw-r--r-- | Documentation/video4linux/gspca.txt | 29 |
14 files changed, 93 insertions, 47 deletions
diff --git a/Documentation/ABI/testing/sysfs-gpio b/Documentation/ABI/testing/sysfs-gpio new file mode 100644 index 00000000000..8aab8092ad3 --- /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/DMA-mapping.txt b/Documentation/DMA-mapping.txt index b463ecd0c7c..c74fec8c235 100644 --- a/Documentation/DMA-mapping.txt +++ b/Documentation/DMA-mapping.txt @@ -740,7 +740,7 @@ failure can be determined by: dma_addr_t dma_handle; dma_handle = pci_map_single(pdev, addr, size, direction); - if (pci_dma_mapping_error(dma_handle)) { + if (pci_dma_mapping_error(pdev, dma_handle)) { /* * reduce current DMA mapping usage, * delay and try again later or diff --git a/Documentation/HOWTO b/Documentation/HOWTO index c2371c5a98f..48a3955f05f 100644 --- a/Documentation/HOWTO +++ b/Documentation/HOWTO @@ -77,7 +77,8 @@ documentation files are also added which explain how to use the feature. When a kernel change causes the interface that the kernel exposes to userspace to change, it is recommended that you send the information or a patch to the manual pages explaining the change to the manual pages -maintainer at mtk.manpages@gmail.com. +maintainer at mtk.manpages@gmail.com, and CC the list +linux-api@vger.kernel.org. Here is a list of files that are in the kernel source tree that are required reading: diff --git a/Documentation/SubmitChecklist b/Documentation/SubmitChecklist index da10e071424..21f0795af20 100644 --- a/Documentation/SubmitChecklist +++ b/Documentation/SubmitChecklist @@ -67,6 +67,8 @@ kernel patches. 19: All new userspace interfaces are documented in Documentation/ABI/. See Documentation/ABI/README for more information. + Patches that change userspace interfaces should be CCed to + linux-api@vger.kernel.org. 20: Check that it all passes `make headers_check'. diff --git a/Documentation/cpusets.txt b/Documentation/cpusets.txt index 1f5a924d1e5..47e568a9370 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/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index eb1a47b9742..83c88cae1ed 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 680fb566b92..8362860e21a 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/proc.txt b/Documentation/filesystems/proc.txt index 394eb2cc1c3..f566ad9bcb7 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -2413,6 +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/ioctl/cdrom.txt b/Documentation/ioctl/cdrom.txt index 62d4af44ec4..59df81c8da2 100644 --- a/Documentation/ioctl/cdrom.txt +++ b/Documentation/ioctl/cdrom.txt @@ -271,14 +271,14 @@ CDROMCLOSETRAY pendant of CDROMEJECT usage: - ioctl(fd, CDROMEJECT, 0); + ioctl(fd, CDROMCLOSETRAY, 0); inputs: none outputs: none error returns: - ENOSYS cd drive not capable of ejecting + ENOSYS cd drive not capable of closing the tray EBUSY other processes are accessing drive, or door is locked notes: diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt index 02dc748b76c..71f0fe1fc1b 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/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 276a7e63782..e1ff0d920a5 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -351,9 +351,10 @@ kernel. This value defaults to SHMMAX. softlockup_thresh: -This value can be used to lower the softlockup tolerance -threshold. The default threshold is 10s. If a cpu is locked up -for 10s, the kernel complains. Valid values are 1-60s. +This value can be used to lower the softlockup tolerance threshold. The +default threshold is 60 seconds. If a cpu is locked up for 60 seconds, +the kernel complains. Valid values are 1-60 seconds. Setting this +tunable to zero will disable the softlockup detection altogether. ============================================================== diff --git a/Documentation/usb/anchors.txt b/Documentation/usb/anchors.txt index 7304bcf5a30..5e6b64c20d2 100644 --- a/Documentation/usb/anchors.txt +++ b/Documentation/usb/anchors.txt @@ -42,9 +42,21 @@ This function kills all URBs associated with an anchor. The URBs are called in the reverse temporal order they were submitted. This way no data can be reordered. +usb_unlink_anchored_urbs() +-------------------------- + +This function unlinks all URBs associated with an anchor. The URBs +are processed in the reverse temporal order they were submitted. +This is similar to usb_kill_anchored_urbs(), but it will not sleep. +Therefore no guarantee is made that the URBs have been unlinked when +the call returns. They may be unlinked later but will be unlinked in +finite time. + usb_wait_anchor_empty_timeout() ------------------------------- This function waits for all URBs associated with an anchor to finish or a timeout, whichever comes first. Its return value will tell you whether the timeout was reached. + + diff --git a/Documentation/video4linux/CARDLIST.au0828 b/Documentation/video4linux/CARDLIST.au0828 index eedc399e8de..aa05e5bb22f 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 78a863ab8a5..0f03900c48f 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 |