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2007-07-10pipe: add documentation and commentsJens Axboe
As per Andrew Mortons request, here's a set of documentation for the generic pipe_buf_operations hooks, the pipe, and pipe_buffer structures. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10pipe: change the ->pin() operation to ->confirm()Jens Axboe
The name 'pin' was badly chosen, it doesn't pin a pipe buffer in the most commonly used sense in the kernel. So change the name to 'confirm', after debating this issue with Hugh Dickins a bit. A good return from ->confirm() means that the buffer is really there, and that the contents are good. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10Remove remnants of sendfile()Jens Axboe
There are now zero users of .sendfile() in the kernel, so kill it from the file_operations structure and in do_sendfile(). Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10xip sendfile removalCarsten Otte
This patch removes xip_file_sendfile, the sendfile implementation for xip without replacement. Those customers that use xip on s390 are not using sendfile() as far as we know, and so far s390 is the only platform this could potentially be used on so far. Having sendfile is not a popular feature for execute in place file systems, however we have a working implementation of splice_read() based on fs/splice.c if anyone asks for it. At this point in time, it does not seem preferable to merge splice_read() for xip because it causes extra maintenence effort due to code duplication and it requires struct page behind the xip memory segment. We'd like to get rid of that in favor of supporting flash based embedded platforms (Monta Vista work) soon. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10pipe: allow passing around of ops private pointerJens Axboe
relay needs this for proper consumption handling, and the network receive support needs it as well to lookup the sk_buff on pipe release. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10splice: divorce the splice structure/function definitions from the pipe headerJens Axboe
We need to move even more stuff into the header so that folks can use the splice_to_pipe() implementation instead of open-coding a lot of pipe knowledge (see relay implementation), so move to our own header file finally. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10sendfile: convert nfsd to splice_direct_to_actor()Jens Axboe
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10splice: add void cookie to the actor dataJens Axboe
We need that for passing driver private info. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10sendfile: kill generic_file_sendfile()Jens Axboe
It's no longer used. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10vmsplice: add vmsplice-to-user supportJens Axboe
A bit of a cheat, it actually just copies the data to userspace. But this makes the interface nice and symmetric and enables people to build on splice, with room for future improvement in performance. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-10splice: abstract out actor dataJens Axboe
For direct splicing (or private splicing), the output may not be a file. So abstract out the handling into a specified actor function and put the data in the splice_desc structure earlier, so we can build on top of that. This is the first step in better splice handling for drivers, and also for implementing vmsplice _to_ user memory. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (31 commits) firewire: fw-sbp2: fix DMA mapping of management ORBs firewire: fw-sbp2: fix DMA mapping of command ORBs firewire: fw-sbp2: fix DMA mapping of S/G tables firewire: fw-sbp2: add a boundary check firewire: fw-sbp2: correctly align page tables firewire: fw-sbp2: memset wants string.h firewire: fw-sbp2: use correct speed in sbp2_agent_reset firewire: fw-sbp2: correctly dereference by container_of firewire: Document userspace ioctl interface. firewire: fw-sbp2: implement nonexclusive login firewire: fw-sbp2: let SCSI shutdown commands through before logout firewire: fw-sbp2: implement max sectors limit for some old bridges firewire: simplify a struct type firewire: support S100B...S400B and link slower than PHY firewire: optimize gap count with 1394b leaf nodes firewire: remove unused macro firewire: missing newline in printk firewire: fw-sbp2: remove unused struct member ieee1394: remove old isochronous ABI ieee1394: sbp2: change some module parameters from int to bool ...
2007-07-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: handle cases of volume knobs generating relative values HID: Logitech keyboard 0xc311 needs reset leds quirk HID: support for logitech cordless desktop LX500 special mapping HID: fix autocentering of PID devices HID: separate quirks for report descriptor fixup HID: Add NOGET quirk for all NCR devices HID: support for Petalynx Maxter remote control HID: fix mismatch between hid-input HUT find/search mapping and the HUT HID: support for Gameron dual psx adaptor USB HID: avoid flush_scheduled_work() HID: Use menuconfig objects HID: force hid-input for Microsoft SideWinder GameVoice device HID: input mapping for Chicony KU-0418 tactical pad HID: make debugging output runtime-configurable
2007-07-09Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (75 commits) Ethernet driver for EISA only SNI RM200/RM400 machines Extract chip specific code out of lasi_82596.c ehea: Whitespace cleanup pasemi_mac: Fix TX interrupt threshold spidernet: Replace literal with const r8169: perform RX config change after mac filtering r8169: mac address change support r8169: display some extra debug information during startup r8169: add endianess annotations to [RT]xDesc r8169: align the IP header when there is no DMA constraint r8169: add bit description for the TxPoll register r8169: cleanup r8169: remove the media option r8169: small 8101 comment r8169: confusion between hardware and IP header alignment r8169: merge with version 8.001.00 of Realtek's r8168 driver r8169: merge with version 6.001.00 of Realtek's r8169 driver r8169: prettify mac_version r8169: populate the hw_start handler for the 8110 r8169: populate the hw_start handler for the 8168 ...
2007-07-10firewire: Document userspace ioctl interface.Kristian Høgsberg
The isochronous packet format is still not documented, but this is a good first step. Signed-off-by: Kristian Høgsberg <krh@redhat.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (format, wording)
2007-07-09ide: add short cables supportBartlomiej Zolnierkiewicz
This patch allows users to override both host and device side cable detection with "ideX=ata66" kernel parameter. Thanks to this it should be now possible to use UDMA > 2 modes on systems (laptops mainly) which use short 40-pin cable instead of 80-pin one. Next patches add automatic detection of some systems using short cables. Changes: * Rename hwif->udma_four to hwif->cbl and make it u8. * Convert all existing users accordingly (use ATA_CBL_* defines while at it). * Add ATA_CBL_PATA40_SHORT support to ide-iops.c:eighty_ninty_three(). * Use ATA_CBL_PATA40_SHORT for "ideX=ata66" kernel parameter. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
2007-07-09mips au1xxx_ide.h: use NULL as firmware-revision wildcardJunio C Hamano
This updates the DMA whitelist in MIPS specific au1xxx ide driver to use NULL instead of "ALL" as the wildcard. Signed-off-by: Junio C Hamano <junkio@cox.net> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-07-09ide: use mutex instead of ide_setting_sem semaphore in IDE driverMatthias Kaehlcke
The IDE driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> --
2007-07-09ide: use mutex instead of ide_cfg_sem semaphore in IDE driverMatthias Kaehlcke
The IDE driver uses a semaphore as mutex. Use the mutex API instead of the (binary) semaphore. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-07-09ide: make void and rename ide_dma_timeout() methodSergei Shtylyov
Since ide_dma_timeout() method's result is discarded, make it return 'void'. While at it, drop 'ide_' from the method's name, drop the '__' prefix from the default method's name, and do some cleanups in this method driver-wise: - in ide-dma.c, au1xxx-ide.c, and pdc202xx_old.c, define/use 'hwif' variable; - in au1xxx-ide.c, get rid of commented out printk(); - in sl82c105.c, get rid of unnecessary variables. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-07-09ide: make void and rename ide_dma_lostirq() methodSergei Shtylyov
Since ide_dma_lostirq() method's result is discarded, make it return 'void'. While at it, rename the method to dma_lost_irq(), drop the '__' prefix from the default method's name, and do some cleanups in this method driver-wise: - in aec62xx.c, rename the method in accordance with other drivers, and get rid of unnecessary variables there; - in pdc202xx_old.c, define/use 'hwif' variable; - in sgiioc4.c, rearrange the code to call the resetproc() method directly. Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-07-09sched: micro-optimize mmdrop()Ingo Molnar
micro-optimize mmdrop(). Improves schedule()'s assembly a bit. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: more agressive idle balancingIngo Molnar
the Linux scheduler is starving a number of workloads. So default to more agressive idle-balancing. This hurts lmbench context-switching numbers (which was the main reason we sucked at idle-balancing for such a long time) but the lmbench numbers are fine once the system is minimally utilized. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: clean up sleep_on() APIsIngo Molnar
clean up the sleep_on() APIs: - do not use fastcall - replace fragile macro magic with proper inline functions Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: simplify sched_find_first_bit()Mike Galbraith
simplify sched_rt.c's sched_find_first_bit() function: there are only 100 RT priority levels left. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: scheduler debugging, coreIngo Molnar
scheduler debugging core: implement /proc/sched_debug and /proc/<PID>/sched files for scheduler debugging. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: remove old cpu accounting fieldIngo Molnar
remove the old cpu-accounting field from signal_struct, now that the code is using CFS's stats. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: remove batch_task()Ingo Molnar
batch_task() in sched.h is now unused - remove it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: remove interactivity types from sched.hIngo Molnar
remove now-unused types/fields used by the old scheduler. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: clean up fastcall uses of sched_fork()/sched_exit()Ingo Molnar
sched_fork()/sched_exit() does not need to specify fastcall anymore, as the x86 kernel defaults to regparm3, and no assembly code calls these functions. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: update delay-accounting to use CFS's precise statsBalbir Singh
update delay-accounting to use CFS's precise stats. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: x86, track TSC-unstable eventsIngo Molnar
track TSC-unstable events and propagate it to the scheduler code. Also allow sched_clock() to be used when the TSC is unstable, the rq_clock() wrapper creates a reliable clock out of it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: remove sleep_typeIngo Molnar
remove the sleep_type heuristics from the core scheduler - scheduling policy is implemented in the scheduling-policy modules. (and CFS does not use this type of sleep-type heuristics) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: clean up the rt priority macrosIngo Molnar
clean up the rt priority macros, pointed out by Andrew Morton. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: make posix-cpu-timers use CFS's accounting informationIngo Molnar
update the posix-cpu-timers code to use CFS's CPU accounting information. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: cfs, core data typesIngo Molnar
add the CFS data types to sched.h. (the old scheduler is still fully intact.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: cfs core, kernel/sched_fair.cIngo Molnar
add kernel/sched_fair.c - which implements the bulk of CFS's behavioral changes for SCHED_OTHER tasks. see Documentation/sched-design-CFS.txt about details. Authors: Ingo Molnar <mingo@elte.hu> Dmitry Adamushko <dmitry.adamushko@gmail.com> Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> Mike Galbraith <efault@gmx.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com> Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
2007-07-09sched: increase the resolution of smpniceIngo Molnar
increase SMP-nice's resolution. This is needed by CFS to implement SCHED_IDLE and cleaned up nice level support. no behavioral changes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: add init_idle_bootup_task()Ingo Molnar
add the init_idle_bootup_task() callback to the bootup thread, unused at the moment. (CFS will use it to switch the scheduling class of the boot thread to the idle class) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: add in_atomic_preempt_off()Ingo Molnar
add in_atomic_preempt_off() - debugging helper that will simplify schedule(). Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: uninline set_task_cpu()Ingo Molnar
uninline set_task_cpu(): CFS will add more code to it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: zap the migration init / cache-hot balancing codeIngo Molnar
the SMP load-balancer uses the boot-time migration-cost estimation code to attempt to improve the quality of balancing. The reason for this code is that the discrete priority queues do not preserve the order of scheduling accurately, so the load-balancer skips tasks that were running on a CPU 'recently'. this code is fundamental fragile: the boot-time migration cost detector doesnt really work on systems that had large L3 caches, it caused boot delays on large systems and the whole cache-hot concept made the balancing code pretty undeterministic as well. (and hey, i wrote most of it, so i can say it out loud that it sucks ;-) under CFS the same purpose of cache affinity can be achieved without any special cache-hot special-case: tasks are sorted in the 'timeline' tree and the SMP balancer picks tasks from the left side of the tree, thus the most cache-cold task is balanced automatically. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: add SCHED_IDLE policyIngo Molnar
this patch adds the SCHED_IDLE policy to sched.h. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09sched: rename idle_type/SCHED_IDLEIngo Molnar
enum idle_type (used by the load-balancer) clashes with the SCHED_IDLE name that we want to introduce. 'CPU_IDLE' instead of 'SCHED_IDLE' is more descriptive as well. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-07-09Merge branches 'debug-module-param' and 'upstream' into for-linusJiri Kosina
2007-07-09HID: support for logitech cordless desktop LX500 special mappingRyo Dairiki
This keyboard has wireless mouse which has left, middle, right buttons and 2-dimensional scrolling wheel. Unfornetuly, this wheel reports side scrolling events and 11 or 12 button events at the same time. I've wrote a patch to fix this mapping. I'm not sure if this mapping is proper for buttons, because , for example, there is no entry for "burn cd" in input.h. The patch also supress 11 and 12 button events from mouse when you scroll the wheel left and right. With this patch, only side scrolling events are reported. (This mouse has only 4 buttons and 2D wheel. There is no such buttons like 11 and 12.) Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2007-07-09HID: separate quirks for report descriptor fixupJiri Kosina
Lately there have been quite a lot of bug reports against broken devices which require us to fix their report descriptor in the runtime, before it is passed to the HID parser. Those devices have eaten quite an amount of our quirks space, which isn't particularly necessary - the quirks are not needed after the report descriptor is parsed, and they just consume bits. Therefore this patch separates the quirks for report descriptor fixup, and moves their handling into separate code. The quirks are then forgotten as soon as the report descriptor has been parsed. Module parameter 'rdesc_quirks' is introduced to be able to modify these quirks in runtime in a similar way to 'quirks' parameter for ordinary HID quirks. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2007-07-09HID: support for Petalynx Maxter remote controlJiri Kosina
Petalynx Maxter remote control [1] 0x18b1/0x0037 emits 0xfa and 0xfc from consumer page (reserved in HUT 1.12) for back and more keys. It also emits a few usages from LOGIVENDOR page, which need adding. Also, this device has broken report descriptor - the reported maximum is too low - it doesn't contain the range for 'back' and 'more' keys, so we need to bump it up before the report descriptor is being parsed. Besides all this, it also requires NOGET quirk. This patch does so. [1] http://www.elmak.pl/index.php?option=com_phpshop&page=shop.browse&category_id=14&ext=opis&lang=en Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2007-07-09HID: force hid-input for Microsoft SideWinder GameVoice deviceJiri Kosina
Microsoft SideWinder GameVoice driver is a trivial device with a few buttons (0x09 HID usage) and an audio connector, which just forwards the audio input into oridinary sound card present in the computer. Despite this fact, the only interface of this device reports itself as a Telephony/Headset type of HID device. This is apparently incorrect - the device itself doesn't provide any audio/telephony functionality. This is achieved in userland application which only needs to receive the button events from the HID driver. This patch establishes a new quirk which forces hid-input to claim a device it will otherwise leave untouched. Reported-by: Tomas Carnecky <tom@dbservice.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2007-07-09HID: make debugging output runtime-configurableJiri Kosina
There have been many reports recently about broken HID devices, the diagnosis of which required users to recompile their kernels in order to be able to provide debugging output needed for coding a quirk for a particular device. This patch makes CONFIG_HID_DEBUG default y if !EMBEDDED and makes it possible to control debugging output produced by HID code by supplying 'debug=1' module parameter. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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