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2009-06-12Merge branch 'topic/pcm-jiffies-check' into for-linusTakashi Iwai1-14/+22
* topic/pcm-jiffies-check: ALSA: pcm - Update document about xrun_debug proc file
2009-06-11ALSA: pcm - Update document about xrun_debug proc fileTakashi Iwai1-14/+22
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-10Merge branch 'topic/sc6000' into for-linusTakashi Iwai1-1/+3
* topic/sc6000: ALSA: sc6000: enable joystick port ALSA: sc6000: fix older card initialization ALSA: sc6000: add support for SC-6600 and SC-7000
2009-06-10Merge branch 'topic/oxygen' into for-linusTakashi Iwai1-1/+2
* topic/oxygen: sound: virtuoso: add Xonar Essence ST support sound: virtuoso: enable HDAV S/PDIF input sound: virtuoso: add another DX PCI ID sound: oxygen: reset DMA when stream is closed
2009-06-10Merge branch 'topic/maya44' into for-linusTakashi Iwai2-1/+165
* topic/maya44: ALSA: ice1724 - Add ESI Maya44 support ALSA: ice1724 - Allow spec driver to create own routing controls ALSA: ice1724 - Add PCI postint to reset sequence ALSA: ice1724 - Clean up definitions of DMA records ALSA: ice1724 - Check error in set_rate function
2009-06-10Merge branch 'topic/lx6464es' into for-linusTakashi Iwai1-0/+7
* topic/lx6464es: ALSA: Add missing description of lx6464es to ALSA-Configuration.txt ALSA: lx6464es - Disable lx_message_send() ALSA: lx6464es - Use snd_card_create() ALSA: lx6464es - driver for the digigram lx6464es interface
2009-06-10Merge branch 'topic/hda' into for-linusTakashi Iwai1-3/+15
* topic/hda: (51 commits) ALSA: hda - Fix the previous tagra-8ch patch ALSA: hda - Add 7.1 support for MSI GX620 ALSA: support Sony Vaio TT ALSA: hda_intel: fix build error when !PM ALSA: hda - More Aspire 8930G fixes ALSA: hda - Acer Aspire 8930G support ALSA: hda - Limit codec-verb retry to limited hardwares ALSA: hda - Add codec bus reset and verb-retry at critical errors ALSA: hda - Reorder and clean-up ALC268 quirk table ALSA: hda - fix audio on LG R510 ALSA: hda - Macbook[Pro] 5 6ch support ALSA: hda-intel: improve initialization for ALC262_HP_BPC model ALSA: hda - Jack Mode changes for Sigmatel boards ALSA: hda - Support NVIDIA 8 channel HDMI audio ALSA: hda - Fix a typo in the previous patch ALSA: hda - Fix reverted LED setup for HP ALSA: hda - Add more register bits definitions ALSA: hda - Always sync writes in single_cmd mode ALSA: hda - Support sync after writing a verb ALSA: hda - Allow concurrent RIRB access in single_cmd mode ...
2009-06-10Merge branch 'topic/ctxfi' into for-linusTakashi Iwai1-0/+19
* topic/ctxfi: (35 commits) ALSA: ctxfi - Clear PCM resources at hw_params and hw_free ALSA: ctxfi - Check the presence of SRC instance in PCM pointer callbacks ALSA: ctxfi - Add missing start check in atc_pcm_playback_start() ALSA: ctxfi - Add use_system_timer module option ALSA: ctxfi - Fix wrong model id for UAA ALSA: ctxfi - Clean up probe routines ALSA: ctxfi - Fix / clean up hw20k2 chip code ALSA: ctxfi - Fix possible buffer pointer overrun ALSA: ctxfi - Remove useless initializations and cast ALSA: ctxfi - Fix DMA mask for emu20k2 chip ALSA: ctxfi - Make volume controls more intuitive ALSA: ctxfi - Optimize the native timer handling using wc counter ALSA: ctxfi - Add missing inclusion of linux/math64.h ALSA: ctxfi - Set device 0 for mixer control elements ALSA: ctxfi - Clean up / optimize ALSA: ctxfi - Set periods_min to 2 ALSA: ctxfi - Use native timer interrupt on emu20k1 ALSA: ctxfi - Fix previous fix for 64bit DMA ALSA: ctxfi - Fix endian-dependent codes ALSA: ctxfi - Allow 64bit DMA ...
2009-06-10Merge branch 'topic/asoc' into for-linusTakashi Iwai1-0/+1
* topic/asoc: (135 commits) ASoC: Apostrophe patrol ASoC: codec tlv320aic23 fix bogus divide by 0 message ASoC: fix NULL pointer dereference in soc_suspend() ASoC: Fix build error in twl4030.c ASoC: SSM2602: assign last substream to the master when shutting down ASoC: Blackfin: document how anomaly 05000250 is handled ASoC: Blackfin: set the transfer size according the ac97_frame size ASoC: SSM2602: remove unsupported sample rates ASoC: TWL4030: Check the interface format for 4 channel mode ASoC: TWL4030: Use reg_cache in twl4030_init_chip ASoC: Initialise dev for the dummy S/PDIF DAI ASoC: Add dummy S/PDIF codec support ASoC: correct print specifiers for unsigneds ASoC: Modify mpc5200 AC97 driver to use V9 of spin_event_timeout() ASoC: Switch FSL SSI DAI over to symmetric_rates ASoC: Mark MPC5200 AC97 as BROKEN until PowerPC merge issues are resolved ASoC: Fabric bindings for STAC9766 on the Efika ASoC: Support for AC97 on Phytec pmc030 base board. ASoC: AC97 driver for mpc5200 ASoC: Main rewite of the mpc5200 audio DMA code ...
2009-06-08ALSA: hda - Add 7.1 support for MSI GX620David Heidelberger1-1/+2
Added 7.1 support for MSI GX620 and jack quirk. Reference: kernel bug#13430 http://bugzilla.kernel.org/show_bug.cgi?id=13430 Signed-off-by: David Heidelberger <d.okias@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-05ALSA: support Sony Vaio TTGuido Günther1-0/+1
with BIOS probing only we offer a non functional headphone swith and volume slider. Signed-off-by: Guido Günther <agx@sigxcpu.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-02ALSA: hda - Acer Aspire 8930G supportHector Martin1-0/+1
Short story: this laptop has 5.1 built-in speakers which you *really* want to use (the not-so-"sub" woofer is what makes the audio above average for a laptop), so 6-channel support is important (plus a decent asound.conf to upmix stereo). It also has the 3 typical jacks that ought to have a selectable mode. And it's based on ALC889, which sucks. Rationale/explanations: The const_channel_count stuff was added because, for a laptop like this, you always have 6 channels available (internal speakers) but still need to set the mode for the 3 external jacks. Therefore, the device always needs to be in 6-channel mode but there still needs to be a mixer control for the jack mode. You could use line/mic-in at the same time as the 6 internal speakers, for example. You might be tempted to make it even smarter by dynamically switching the max channel count when headphones are plugged in (therefore muting the internal speakers and reducing the physical channel count to the jack channel mode), but as a user I consider this to be harmful because I want the audio to blow up to 6 channels / upmixed as soon as I unplug the headphones, and having opened the device while in 2-channel mode would prevent this from working (and always making 6-channel mode available doesn't do any harm). The hardware needs EAPD turned on and the DACs routed to the internal speaker pins, so the patch adds those verbs. The ALC889 CLFE and subsequent (side/aux, here unused) DACs do NOT work by default, at least here. I wasted much time trying to talk to Realtek/pshou about this, but they just kept sending me useless updates to patch_realtek.c that did nothing relevant. In the end I gave up and brute forced the issue by trying to flip every bit in the proprietary coefficient registers, and eventually found the two magic registers that need to be cleared to enable all DACs. I have only heard Acer users complain, but that might be because ALC889 is pretty new and using 5.1 (and noticing the missing center/lfe channels) might not be that common. If this is a generalized issue with all ALC889 systems then those verbs should probably be moved to a common verb array. The internal mic is untested and probably doesn't work. These settings will probably work for other Acer Gemstone laptops with the same 5.1 speaker config. When identified, those should be added to the PCI subsystem ID list. Signed-off-by: Hector Martin <hector@marcansoft.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-01hwmon: Update documentation on fan_maxChristian Engelmayer1-0/+6
Add fan_max description. Add fan limit alarm 'max_alarm' to the alarm section. Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-05-29Merge branch 'for-linus' of ↵Linus Torvalds1-24/+79
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: libps2 - better handle bad scheduler decisions Input: usb1400_ts - fix access to "device data" in resume function Input: multitouch - augment event semantics documentation Input: multitouch - add tracking ID to the protocol
2009-05-27Merge branch 'fix/pcm-jiffies-check' into for-linusTakashi Iwai1-0/+5
* fix/pcm-jiffies-check: ALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug mode ALSA: Fix invalid jiffies check after pause
2009-05-27ALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug modeTakashi Iwai1-0/+5
The PCM hw_ptr jiffies check results sometimes in problems when a hardware doesn't give smooth hw_ptr updates. So far, au88x0 and some other drivers appear not working due to this strict check. However, this check is a nice debug tool, and the capability should be still kept. Hence, we disable this check now as default unless the user enables it by setting the xrun_debug mode to the specific stream via a proc file. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-26Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Add missing check of pin vref 50 and others in Realtek codecs ALSA: hda - Add 5stack-no-fp model for STAC927x ALSA: hda - Add forced codec-slots for ASUS W5Fm
2009-05-26Merge branch 'fix/hda' into topic/hdaTakashi Iwai1-0/+1
2009-05-25Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Remove remap percpu allocator for the time being x86: cpa_flush_array wbinvd should be done on all CPUs x86: bugfix wbinvd() model check instead of family check x86: introduce noxsave boot parameter x86, setup: revert ACPI 3 E820 extended attributes support x86: DMI match for the Sony VGN-Z540N as it needs BIOS reboot
2009-05-25sound: virtuoso: add Xonar Essence ST supportClemens Ladisch1-1/+2
Add support for the Asus Xonar Essence ST and its daughterboard. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-24ALSA: hda - Add 5stack-no-fp model for STAC927xTakashi Iwai1-0/+1
The recent fix for the headphone volume control on IDT/STAC codecs resulted in the removal of invalid "Side" volume eventually. But, if the front panel doesn't exist, this setup could be regarded as a sort of regression, as reported in kernel bug #13250. Now as a workaround, a new model 5stack-no-fp is added so that the user without the front panel can choose this one explicitly. Reference: bko#13250 http://bugzilla.kernel.org/show_bug.cgi?id=13250 Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-23Input: multitouch - augment event semantics documentationHenrik Rydberg1-24/+79
Through the collaboration to adapt the N-trig and Stantum HID drivers to the MT protocol, some semantic clarifications to the protocol have been made. This patch adds them to the MT documentation. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Tested-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-05-22x86: introduce noxsave boot parameterSuresh Siddha1-0/+4
Introduce "noxsave" boot parameter which will disable the cpu's xsave/xrstor capabilities. Useful for debugging and working around xsave related issues. [ Impact: make it possible to debug problems in the field ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-05-21hugh: update email addressHugh Dickins1-1/+1
My old address will shut down in a few days time: remove it from the tree, and add a tmpfs (shmem filesystem) maintainer entry with the new address. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-19Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-3/+12
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: ipv4: make default for INET_LRO consistent with help text net: fix skb_seq_read returning wrong offset/length for page frag data pkt_sched: gen_estimator: use 64 bit intermediate counters for bps be2net: add two new pci device ids to pci device table sch_teql: should not dereference skb after ndo_start_xmit() tcp: fix MSG_PEEK race check Doc: fixed descriptions on /proc/sys/net/core/* and /proc/sys/net/unix/* Neterion: *FIFO1_DMA_ERR set twice, should 2nd be *FIFO2_DMA_ERR? mv643xx_eth: fix PPC DMA breakage bonding: fix link down handling in 802.3ad mode bridge: fix initial packet flood if !STP bridge: relay bridge multicast pkgs if !STP NET: Meth: Fix unsafe mix of irq and non-irq spinlocks. mlx4_en: Fix not deleted napi structures ipconfig: handle case of delayed DHCP server netpoll: don't dereference NULL dev from np wimax/i2400m: fix device crash: fix optimization in _roq_queue_update_ws
2009-05-18ALSA: hda - Improved MacBook 3,1 supportTorben Schulz1-0/+1
This patch adds support for MacBook 3,1 sound by adding a model new "mb31" with the appropriate init verbs, mixers and channel modes to the ALC883 configuration. patch_alc882() and patch_alc883() are modified to handle the MacBook 3,1 sound-chip (Realtek ALC889A) correctly. Signed-off-by: Torben Schulz <public@letorbi.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-17Doc: fixed descriptions on /proc/sys/net/core/* and /proc/sys/net/unix/*Wang Tinggong1-3/+12
Signed-off-by: Wang Tinggong <wangtinggong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17Merge branch 'for-linus' of ↵Linus Torvalds1-0/+479
git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: mm: SLOB fix reclaim_state mm: SLUB fix reclaim_state slub: add Documentation/ABI/testing/sysfs-kernel-slab slub: enforce MAX_ORDER
2009-05-15Merge branch 'for_linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdb: gdb documentation fix kgdb,i386: use address that SP register points to in the exception frame sysrq, intel_fb: fix sysrq g collision
2009-05-15kgdb: gdb documentation fixFrank Rowand1-1/+1
gdb command "set remote debug 1" is not valid, change to correct command. Signed-off-by: Frank Rowand <frank.rowand@am.sony.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2009-05-15Revert "mm: add /proc controls for pdflush threads"Jens Axboe1-28/+0
This reverts commit fafd688e4c0c34da0f3de909881117d374e4c7af. Work is progressing to switch away from pdflush as the process backing for flushing out dirty data. So it seems pointless to add more knobs to control pdflush threads. The original author of the patch did not have any specific use cases for adding the knobs, so we can easily revert this before 2.6.30 to avoid having to maintain this API forever. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-05-14ALSA: SB X-Fi driver mergeWai Yew CHAY1-0/+19
The Sound Blaster X-Fi driver supports Creative solutions based on 20K1 and 20K2 chipsets. Supported hardware : Creative Sound Blaster X-Fi Titanium Fatal1ty® Champion Series Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series Creative Sound Blaster X-Fi Titanium Professional Audio Creative Sound Blaster X-Fi Titanium Creative Sound Blaster X-Fi Elite Pro Creative Sound Blaster X-Fi Platinum Creative Sound Blaster X-Fi Fatal1ty Creative Sound Blaster X-Fi XtremeGamer Creative Sound Blaster X-Fi XtremeMusic Current release features: * ALSA PCM Playback * ALSA Record * ALSA Mixer Note: * External I/O modules detection not included. Signed-off-by: Wai Yew CHAY <wychay@ctl.creative.com> Singed-off-by: Ryan RICHARDS <ryan_richards@creativelabs.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-12Merge branch 'topic/drvdata-fix' into topic/asocTakashi Iwai10-22/+471
2009-05-12ALSA: hda - Add support of Samsung NC10 mini notebookChris Pockelé1-0/+1
Add specific configuration for Samsung NC10 mini notebook. Internal mic/speakers will be correctly muted when plugging in external ones. Mixer controls are added for speakers, headphones and PC beep. "Boost" is added for the microphones. Signed-off-by: Chris Pockelé <chris.pockele.f1@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-11ALSA: hda - Add missing models for Realtek codecsTakashi Iwai1-2/+8
Added the missing descriptions and the model names for Realtek codecs to the documentation and the config table. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-08Doc/sysfs-rules: Swap the order of the words so the sentence makes more senseHenrik Austad1-1/+1
Signed-off-by: Henrik Austad <henrik@austad.us> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-05-06doc: small kernel-parameters updatesRandy Dunlap1-2/+8
Change last "i386" to X86-32 as is used throughout the rest of the file. Change combination of X86-32,X86-64 to just X86, as is done throughout the rest of the file. Add a note that hyphens and underscores are equivalent in parameter names, with examples. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Jan Engelhardt <jengelh@medozas.de> Cc: Christopher Sylvain <chris.sylvain@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-06doc: hashdist defaults on for 64bitHugh Dickins1-1/+1
kernel boot parameter `hashdist' now defaults on for all 64bit NUMA. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-06ALSA: ice1724 - Add ESI Maya44 supportTakashi Iwai2-1/+165
Added the support for ESI Maya44 board to ice1724 driver. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-05Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kernel/posix-cpu-timers.c: fix sparse warning dma-debug: remove broken dma memory leak detection for 2.6.30 locking: Documentation: lockdep-design.txt, fix note of state bits
2009-05-04Merge branch 'fix/asoc' into topic/asocTakashi Iwai40-3577/+1357
2009-05-04ALSA: sc6000: enable joystick portKrzysztof Helt1-1/+3
Add module parameter to enable or disable joystick port (gameport) on the SC6600 and later cards. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-04ALSA: hda - Addition for HP dv4-1222nr laptop supportJames Gardiner1-0/+1
Signed-off-by: James Gardiner <renidragsemaj@yahoo.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-05-02Merge branch 'for-linus' of ↵Linus Torvalds2-0/+205
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: document the multi-touch (MT) protocol Input: add detailed multi-touch finger data report protocol Input: allow certain EV_ABS events to bypass all filtering Input: bcm5974 - add documentation for the driver Input: bcm5974 - augment debug information Input: bcm5974 - Add support for the Macbook 5 (Unibody) Input: bcm5974 - add quad-finger tapping Input: bcm5974 - prepare for a new trackpad header type Input: appletouch - fix DMA to/from stack buffer Input: wacom - fix TabletPC touch bug Input: lifebook - add DMI entry for Fujitsu B-2130 Input: ALPS - add signature for Toshiba Satellite Pro M10 Input: elantech - make sure touchpad is really in absolute mode Input: elantech - provide a workaround for jumpy cursor on firmware 2.34 Input: ucb1400 - use disable_irq_nosync() in irq handler Input: tsc2007 - use disable_irq_nosync() in irq handler Input: sa1111ps2 - use disable_irq_nosync() in irq handlers Input: omap-keypad - use disable_irq_nosync() in irq handler
2009-05-02Merge branch 'master' of ↵Linus Torvalds1-2/+3
git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild, modpost: Check the section flags, to catch missing "ax"/"aw" kbuild: fix comment in modpost.c kbuild: fix scripts/setlocalversion with git kbuild: fix Module.markers permission error under cygwin docs: also clean index.html kbuild: remove a tag file before it is regenerated kbuild: "make prepare" should be "make modules_prepare" kbuild: clean Module.markers and modules.order for out-of-tree modules avr32: drop unused CLEAN_FILES
2009-05-02mm: prevent divide error for small values of vm_dirty_bytesAndrea Righi1-0/+4
Avoid setting less than two pages for vm_dirty_bytes: this is necessary to avoid potential division by 0 (like the following) in get_dirty_limits(). [ 49.951610] divide error: 0000 [#1] PREEMPT SMP [ 49.952195] last sysfs file: /sys/devices/pci0000:00/0000:00:01.1/host0/target0:0:0/0:0:0:0/block/sda/uevent [ 49.952195] CPU 1 [ 49.952195] Modules linked in: pcspkr [ 49.952195] Pid: 3064, comm: dd Not tainted 2.6.30-rc3 #1 [ 49.952195] RIP: 0010:[<ffffffff802d39a9>] [<ffffffff802d39a9>] get_dirty_limits+0xe9/0x2c0 [ 49.952195] RSP: 0018:ffff88001de03a98 EFLAGS: 00010202 [ 49.952195] RAX: 00000000000000c0 RBX: ffff88001de03b80 RCX: 28f5c28f5c28f5c3 [ 49.952195] RDX: 0000000000000000 RSI: 00000000000000c0 RDI: 0000000000000000 [ 49.952195] RBP: ffff88001de03ae8 R08: 0000000000000000 R09: 0000000000000000 [ 49.952195] R10: ffff88001ddda9a0 R11: 0000000000000001 R12: 0000000000000001 [ 49.952195] R13: ffff88001fbc8218 R14: ffff88001de03b70 R15: ffff88001de03b78 [ 49.952195] FS: 00007fe9a435b6f0(0000) GS:ffff8800025d9000(0000) knlGS:0000000000000000 [ 49.952195] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.952195] CR2: 00007fe9a39ab000 CR3: 000000001de38000 CR4: 00000000000006e0 [ 49.952195] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.952195] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 49.952195] Process dd (pid: 3064, threadinfo ffff88001de02000, task ffff88001ddda250) [ 49.952195] Stack: [ 49.952195] ffff88001fa0de00 ffff88001f2dbd70 ffff88001f9fe800 000080b900000000 [ 49.952195] 00000000000000c0 ffff8800027a6100 0000000000000400 ffff88001fbc8218 [ 49.952195] 0000000000000000 0000000000000600 ffff88001de03bb8 ffffffff802d3ed7 [ 49.952195] Call Trace: [ 49.952195] [<ffffffff802d3ed7>] balance_dirty_pages_ratelimited_nr+0x1d7/0x3f0 [ 49.952195] [<ffffffff80368f8e>] ? ext3_writeback_write_end+0x9e/0x120 [ 49.952195] [<ffffffff802cc7df>] generic_file_buffered_write+0x12f/0x330 [ 49.952195] [<ffffffff802cce8d>] __generic_file_aio_write_nolock+0x26d/0x460 [ 49.952195] [<ffffffff802cda32>] ? generic_file_aio_write+0x52/0xd0 [ 49.952195] [<ffffffff802cda49>] generic_file_aio_write+0x69/0xd0 [ 49.952195] [<ffffffff80365fa6>] ext3_file_write+0x26/0xc0 [ 49.952195] [<ffffffff803034d1>] do_sync_write+0xf1/0x140 [ 49.952195] [<ffffffff80290d1a>] ? get_lock_stats+0x2a/0x60 [ 49.952195] [<ffffffff80280730>] ? autoremove_wake_function+0x0/0x40 [ 49.952195] [<ffffffff8030411b>] vfs_write+0xcb/0x190 [ 49.952195] [<ffffffff803042d0>] sys_write+0x50/0x90 [ 49.952195] [<ffffffff8022ff6b>] system_call_fastpath+0x16/0x1b [ 49.952195] Code: 00 00 00 2b 05 09 1c 17 01 48 89 c6 49 0f af f4 48 c1 ee 02 48 89 f0 48 f7 e1 48 89 d6 31 d2 48 c1 ee 02 48 0f af 75 d0 48 89 f0 <48> f7 f7 41 8b 95 ac 01 00 00 48 89 c7 49 0f af d4 48 c1 ea 02 [ 49.952195] RIP [<ffffffff802d39a9>] get_dirty_limits+0xe9/0x2c0 [ 49.952195] RSP <ffff88001de03a98> [ 50.096523] ---[ end trace 008d7aa02f244d7b ]--- Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: David Rientjes <rientjes@google.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-02kernel-doc: restrict syntax for private: and public:Randy Dunlap1-2/+5
scripts/kernel-doc can (incorrectly) delete struct members that are surrounded by /* ... */ <struct members> /* ... */ if there is a /* private: */ comment in there somewhere also. Fix that by making the "/* private:" only allow whitespace between /* and "private:", not anything/everything in the world. This fixes some erroneous kernel-doc warnings that popped up while processing include/linux/usb/composite.h. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-02mm: close page_mkwrite racesNick Piggin1-8/+16
Change page_mkwrite to allow implementations to return with the page locked, and also change it's callers (in page fault paths) to hold the lock until the page is marked dirty. This allows the filesystem to have full control of page dirtying events coming from the VM. Rather than simply hold the page locked over the page_mkwrite call, we call page_mkwrite with the page unlocked and allow callers to return with it locked, so filesystems can avoid LOR conditions with page lock. The problem with the current scheme is this: a filesystem that wants to associate some metadata with a page as long as the page is dirty, will perform this manipulation in its ->page_mkwrite. It currently then must return with the page unlocked and may not hold any other locks (according to existing page_mkwrite convention). In this window, the VM could write out the page, clearing page-dirty. The filesystem has no good way to detect that a dirty pte is about to be attached, so it will happily write out the page, at which point, the filesystem may manipulate the metadata to reflect that the page is no longer dirty. It is not always possible to perform the required metadata manipulation in ->set_page_dirty, because that function cannot block or fail. The filesystem may need to allocate some data structure, for example. And the VM cannot mark the pte dirty before page_mkwrite, because page_mkwrite is allowed to fail, so we must not allow any window where the page could be written to if page_mkwrite does fail. This solution of holding the page locked over the 3 critical operations (page_mkwrite, setting the pte dirty, and finally setting the page dirty) closes out races nicely, preventing page cleaning for writeout being initiated in that window. This provides the filesystem with a strong synchronisation against the VM here. - Sage needs this race closed for ceph filesystem. - Trond for NFS (http://bugzilla.kernel.org/show_bug.cgi?id=12913). - I need it for fsblock. - I suspect other filesystems may need it too (eg. btrfs). - I have converted buffer.c to the new locking. Even simple block allocation under dirty pages might be susceptible to i_size changing under partial page at the end of file (we also have a buffer.c-side problem here, but it cannot be fixed properly without this patch). - Other filesystems (eg. NFS, maybe btrfs) will need to change their page_mkwrite functions themselves. [ This also moves page_mkwrite another step closer to fault, which should eventually allow page_mkwrite to be moved into ->fault, and thus avoiding a filesystem calldown and page lock/unlock cycle in __do_fault. ] [akpm@linux-foundation.org: fix derefs of NULL ->mapping] Cc: Sage Weil <sage@newdream.net> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-01docs: also clean index.htmlRandy Dunlap1-2/+3
Missed index.html in "make cleandocs", so add it. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-04-30Input: document the multi-touch (MT) protocolHenrik Rydberg1-0/+140
This patchs adds documentation for the multi-touch protocol to Documentation/input/. [randy.dunlap@oracle.com: grammar fixes] Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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