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2009-09-11[S390] improve mcount codeMartin Schwidefsky
Move the 64 bit mount code from mcount.S into mcount64.S and avoid code duplication. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] convert/optimize csum_fold() to CHeiko Carstens
In the meantime gcc generates better code than the old inline assemblies do. Original inline assembly results in: lr %r1,%r2 sr %r3,%r3 lr %r2,%r1 srdl %r2,16 alr %r2,%r3 alr %r1,%r2 srl %r1,16 xilf %r1,65535 llghr %r2,%r1 br %r14 Out of the C code gcc generates this: rll %r1,%r2,16 ar %r1,%r2 srl %r1,16 xilf %r1,65535 llghr %r2,%r1 br %r14 In addition we don't have any static register allocations anymore and gcc is free to shuffle instructions around for better pipeline usage. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] introduce get_clock_monotonicHeiko Carstens
Introduce get_clock_monotonic() function which can be used to get a (fast) timestamp. Resolution is the same as for get_clock(). The only difference is that the timestamps are monotonic and don't jump backward or forward. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] dasd: fix message namingStefan Haberland
This patch fixes message naming so that generic dasd messages do not contain the device discipline. For this purpose the dev_ makros are replaced by pr_ makros for generic dasd messages. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] dasd: optimize cpu usage in goodcaseStefan Haberland
remove unnecessary dbf call, remove string operations for magic Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] dasd: fail requests when device state is less then readyStefan Weinhuber
A DASD device that is not ready or online has no defined disk layout, so all requests that arrive in such a state need to be returned as failed. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: remove ccw_device init_nameSebastian Ott
We used the init_name to set the console ccw_device's name early at the boot stage. This patch moves the name setting (for all ccw devices) to the point where we actually register the device. At this time we can do dynamic allocations and therefore use dev_set_name. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: move final put_device to ccw_device_unregisterSebastian Ott
We use a test_and_clear_bit to prevent a device from being unregistered twice. Unfortunately in this cases the "final" put_device (from device_initialize) was issued more than once, resulting in an use after free error. Fix this by moving this put_device to ccw_device_unregister. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: remove subchannel init_nameSebastian Ott
We used the init_name to set the console subchannels name early at the boot stage. With the patch cio: fix memleak in subchannel validation we moved the name setting to the point where we actually register the console subchannel. At this time we can do dynamic allocations and therefore use dev_set_name. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: fix memleak in subchannel validationSebastian Ott
When scanning for new subchannels we have a code path where we allocate memory for a struct subchannel, set the device name (which is dynamically allocated now) and do a check if the underlying device is blacklisted - if so we free the subchannel structure. Since we have not set up refcounting at this stage, the device name's memory is lost. Fix this by moving the dev_set_name after the blacklist test. Note: With this patch the init_name for the console subchannel becomes virtually obsolete. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: fix use after free in s390 debug featureSebastian Ott
When using s390dbf with "%s" in sprintf format strings the string itself is not copied to the dbf buffer. Since in this case only pointers are stored in the s390dbf, we should not use dev_name - which is bound to the lifetime of the device. Reading this entry from s390dbf after the device was released will cause an use after free error. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] qdio: remove limited number of debugfs entriesJan Glauber
The number of qdio debugfs entries was limited. Remove this limit and group the queue files in a per device directory. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: failing set online/offline processing.Michael Ernst
When unit checks trigger sensing the device state is set to W4SENSE until sense completion; then the device state is set back to ONLINE. If a unit check occurs while set online or set offline requests are processed then it might happen that the device's temporary W4SENSE state causes these functions to terminate, leaving the device in an inconsistent state when the state is set back to ONLINE later on so that the device cannot be set online or offline any longer. To solve this, set online/offline and related rollback or error routines are processed only if the device is in a final or DISCONNECTED state. Signed-off-by: Michael Ernst <mernst@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: ensure to hold a reference for deferred deregistrationSebastian Ott
Ensure to always hold an extra device reference for scheduling a subchannel deregistration, by moving the get_device to ccw_device_schedule_sch_unregister. This fixes an use after free error in ccw_device_call_sch_unregister where put_device was called on an already freed device structure. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] qdio: continue polling if the queue is not finishedJan Glauber
With commit c38f96080955854e54df9cb392bc674e1ae330e1 polling was stopped for the queue even if new data is available. Return immediately after scheduling the queue tasklet if the queue is not done. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: increase trace levelSebastian Ott
Move debug traces for start I/O and interrupt events to exclusive trace levels. Also change tracing in hot-path from sprintf (costly) to hex. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: fix not oper handling after failed [on|off]line processingSebastian Ott
If online/offline processing of a ccw device fails, resulting in not operational state, notify the driver and unregister the device in case the driver dosn't want to keep it. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: consolidate subchannel intparm resetPeter Oberparleiter
Ensure that the hardware interruption parameter for a subchannel is reset when the associated subchannel data structure is freed. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: move scsw helper functions to header fileHeiko Carstens
All scsw helper functions are very short and usage of them shouldn't result in function calls. Therefore we move them to a separate header file. Also saves a lot of EXPORT_SYMBOLs. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11[S390] cio: fix ineffective verify eventPeter Oberparleiter
Path verification events occurring for offline devices are currently ignored. As a result, offline devices are not removed, even though they might no longer be accessible (for example because the last path to the device was varied offline). Fix this by scheduling a status evaluation for the affected subchannel when a path verification event occurs. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2009-09-11writeback: check for registered bdi in flusher add and inode dirtyJens Axboe
Also a debugging aid. We want to catch dirty inodes being added to backing devices that don't do writeback. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11writeback: add name to backing_dev_infoJens Axboe
This enables us to track who does what and print info. Its main use is catching dirty inodes on the default_backing_dev_info, so we can fix that up. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11writeback: add some debug inode list counters to bdi statsJens Axboe
Add some debug entries to be able to inspect the internal state of the writeback details. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11writeback: get rid of pdflush completelyJens Axboe
It is now unused, so kill it off. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11writeback: switch to per-bdi threads for flushing dataJens Axboe
This gets rid of pdflush for bdi writeout and kupdated style cleaning. pdflush writeout suffers from lack of locality and also requires more threads to handle the same workload, since it has to work in a non-blocking fashion against each queue. This also introduces lumpy behaviour and potential request starvation, since pdflush can be starved for queue access if others are accessing it. A sample ffsb workload that does random writes to files is about 8% faster here on a simple SATA drive during the benchmark phase. File layout also seems a LOT more smooth in vmstat: r b swpd free buff cache si so bi bo in cs us sy id wa 0 1 0 608848 2652 375372 0 0 0 71024 604 24 1 10 48 42 0 1 0 549644 2712 433736 0 0 0 60692 505 27 1 8 48 44 1 0 0 476928 2784 505192 0 0 4 29540 553 24 0 9 53 37 0 1 0 457972 2808 524008 0 0 0 54876 331 16 0 4 38 58 0 1 0 366128 2928 614284 0 0 4 92168 710 58 0 13 53 34 0 1 0 295092 3000 684140 0 0 0 62924 572 23 0 9 53 37 0 1 0 236592 3064 741704 0 0 4 58256 523 17 0 8 48 44 0 1 0 165608 3132 811464 0 0 0 57460 560 21 0 8 54 38 0 1 0 102952 3200 873164 0 0 4 74748 540 29 1 10 48 41 0 1 0 48604 3252 926472 0 0 0 53248 469 29 0 7 47 45 where vanilla tends to fluctuate a lot in the creation phase: r b swpd free buff cache si so bi bo in cs us sy id wa 1 1 0 678716 5792 303380 0 0 0 74064 565 50 1 11 52 36 1 0 0 662488 5864 319396 0 0 4 352 302 329 0 2 47 51 0 1 0 599312 5924 381468 0 0 0 78164 516 55 0 9 51 40 0 1 0 519952 6008 459516 0 0 4 78156 622 56 1 11 52 37 1 1 0 436640 6092 541632 0 0 0 82244 622 54 0 11 48 41 0 1 0 436640 6092 541660 0 0 0 8 152 39 0 0 51 49 0 1 0 332224 6200 644252 0 0 4 102800 728 46 1 13 49 36 1 0 0 274492 6260 701056 0 0 4 12328 459 49 0 7 50 43 0 1 0 211220 6324 763356 0 0 0 106940 515 37 1 10 51 39 1 0 0 160412 6376 813468 0 0 0 8224 415 43 0 6 49 45 1 1 0 85980 6452 886556 0 0 4 113516 575 39 1 11 54 34 0 2 0 85968 6452 886620 0 0 0 1640 158 211 0 0 46 54 A 10 disk test with btrfs performs 26% faster with per-bdi flushing. A SSD based writeback test on XFS performs over 20% better as well, with the throughput being very stable around 1GB/sec, where pdflush only manages 750MB/sec and fluctuates wildly while doing so. Random buffered writes to many files behave a lot better as well, as does random mmap'ed writes. A separate thread is added to sync the super blocks. In the long term, adding sync_supers_bdi() functionality could get rid of this thread again. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11writeback: move dirty inodes from super_block to backing_dev_infoJens Axboe
This is a first step at introducing per-bdi flusher threads. We should have no change in behaviour, although sb_has_dirty_inodes() is now ridiculously expensive, as there's no easy way to answer that question. Not a huge problem, since it'll be deleted in subsequent patches. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11writeback: get rid of generic_sync_sb_inodes() exportJens Axboe
This adds two new exported functions: - writeback_inodes_sb(), which only attempts to writeback dirty inodes on this super_block, for WB_SYNC_NONE writeout. - sync_inodes_sb(), which writes out all dirty inodes on this super_block and also waits for the IO to complete. Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-10Merge branch 'mad' into for-linusRoland Dreier
Conflicts: drivers/infiniband/core/mad.c
2009-09-10Merge branches 'cxgb3', 'ehca', 'ipath', 'ipoib', 'misc', 'mlx4', 'mthca' ↵Roland Dreier
and 'nes' into for-linus
2009-09-11Merge branch 'next' into for-linusJames Morris
2009-09-10md: Fix "strchr" [drivers/md/dm-log-userspace.ko] undefined!Geert Uytterhoeven
Commit b8313b6da7e2e7c7f47d93d8561969a3ff9ba0ea ("dm log: remove incorrect field from userspace table output") added a call to strstr() with a single-character "needle" string parameter. Unfortunately some versions of gcc replace such calls to strstr() by calls to strchr() behind our back. This causes linking errors if strchr() is defined as an inline function in <asm/string.h> (e.g. on m68k): | WARNING: "strchr" [drivers/md/dm-log-userspace.ko] undefined! Avoid this by explicitly calling strchr() instead. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-10Merge branch 'topic/ymfpci' into for-linusTakashi Iwai
* topic/ymfpci: sound: ymfpci: increase timer resolution to 96 kHz
2009-09-10Merge branch 'topic/usb-audio' into for-linusTakashi Iwai
* topic/usb-audio: ALSA: usb-audio - Fix types taken in min() sound: usb-audio: do not make URBs longer than sync packet interval sound: usb-audio: add MIDI drain callback sound: usb-audio: use multiple output URBs sound: usb-audio: use multiple input URBs sound: usb-audio: Xonar U1 digital output support
2009-09-10Merge branch 'topic/tlv-minmax' into for-linusTakashi Iwai
* topic/tlv-minmax: ALSA: usb-audio - Correct bogus volume dB information ALSA: usb-audio - Use the new TLV_DB_MINMAX type ALSA: Add new TLV types for dBwith min/max
2009-09-10Merge branch 'topic/soundcore-preclaim' into for-linusTakashi Iwai
* topic/soundcore-preclaim: sound: make OSS device number claiming optional and schedule its removal sound: request char-major-* module aliases for missing OSS devices chrdev: implement __[un]register_chrdev()
2009-09-10Merge branch 'topic/snd-printk' into for-linusTakashi Iwai
* topic/snd-printk: ALSA: Fixed a typo of printk() ALSA: Add debug module option ALSA: core - strip too long file names in snd_print*()
2009-09-10Merge branch 'topic/pcm-estrpipe-in-pm' into for-linusTakashi Iwai
* topic/pcm-estrpipe-in-pm: ALSA: pcm - Tell user that stream to be rewound is suspended
2009-09-10Merge branch 'topic/pcm-drain-nonblock' into for-linusTakashi Iwai
* topic/pcm-drain-nonblock: ALSA: pcm - Increase protocol version ALSA: pcm - Fix drain behavior in non-blocking mode
2009-09-10Merge branch 'topic/oxygen' into for-linusTakashi Iwai
* topic/oxygen: sound: oxygen: work around MCE when changing volume
2009-09-10Merge branch 'topic/oss' into for-linusTakashi Iwai
* topic/oss: ALSA: allocation may fail in snd_pcm_oss_change_params() sound: vwsnd: Fix setting of cfgval and ctlval in li_setup_dma() sound: fix OSS MIDI output data loss
2009-09-10Merge branch 'topic/misc' into for-linusTakashi Iwai
* topic/misc: ALSA: Remove unneeded ifdef from sound/core.h ALSA: Remove struct snd_monitor_file from public sound/core.h ALSA: Release v1.0.21
2009-09-10Merge branch 'topic/midi' into for-linusTakashi Iwai
* topic/midi: sound: rawmidi: disable active-sensing-on-close by default sound: seq_oss_midi: remove magic numbers sound: seq_midi: do not send MIDI reset when closing seq-midi: always log message on output overrun
2009-09-10Merge branch 'topic/ice1724-pm' into for-linusTakashi Iwai
* topic/ice1724-pm: ALSA: ice1724 - Fix section mismatch ALSA: ice1724 - Patch for suspend/resume for Audiotrak Prodigy HD2
2009-09-10Merge branch 'topic/hdsp' into for-linusTakashi Iwai
* topic/hdsp: ALSA: hdsp - allow proc reporting with disconnected io box
2009-09-10Merge branch 'topic/hda' into for-linusTakashi Iwai
* topic/hda: (92 commits) ALSA: hda - Use auto model for HP laptops with ALC268 codec ALSA: hda/realtek: Added support for CLEVO M540R subsystem, 6 channel + digital ALSA: hda - Add support of Alienware M17x laptop ALSA: hda - Remove dead codes from patch_sigmatel.c ALSA: hda - Fix input source selection of IDT92HD73xx ALSA: hda - Fix obsolete CONFIG_SND_DEBUG_DETECT ALSA: hda - Unmute docking line-out as default with AD1984A codec ALSA: hda - Add another entry for Nvidia HDMI device ALSA: hda - Add missing GPIO initialization for AD1984A laptop model ALSA: hda - Add support of docking auto-mute/mic for AD1984A laptop model ALSA: hda - Fix ALC268/ALC269 headphone pin routing ALSA: hda - Create "Digital Mic Capture Volume" correctly for IDT codecs ALSA: hda - Add more quirk for HP laptops with AD1984A ALSA: hda - Add / fix model entries for HD-audio driver ALSA: hda - Add full audio support on Acer Aspire 7730G notebook ALSA: hda - Improve auto-cfg mixer name for ALC662 ALSA: hda - Improve auto-cfg mixer name for ALC861-VD ALSA: hda - Improve auto-cfg mixer name for ALC262 ALSA: hda - Improve auto-cfg mixer name for ALC260 ALSA: hda - Improve auto-cfg mixer name for ALC880 ...
2009-09-10Merge branch 'topic/dummy' into for-linusTakashi Iwai
* topic/dummy: ALSA: dummy - Increase MAX_PCM_SUBSTREAMS to 128 ALSA: dummy - Add debug proc file ALSA: Add const prefix to proc helper functions ALSA: Re-export snd_pcm_format_name() function ALSA: dummy - Fake buffer allocations ALSA: dummy - Fix the timer calculation in systimer mode ALSA: dummy - Add more description ALSA: dummy - Better jiffies handling ALSA: dummy - Support high-res timer mode
2009-09-10Merge branch 'topic/dma-sgbuf' into for-linusTakashi Iwai
* topic/dma-sgbuf: ALSA: Fix SG-buffer DMA with non-coherent architectures
2009-09-10Merge branch 'topic/ctxfi' into for-linusTakashi Iwai
* topic/ctxfi: ALSA: ctxfi - Simple code clean up ALSA: ctxfi - Native timer support for emu20k2
2009-09-10Merge branch 'topic/ctl-add-remove-fixes' into for-linusTakashi Iwai
* topic/ctl-add-remove-fixes: sound: snd_ctl_remove_user_ctl: prevent removal of kernel controls sound: snd_ctl_remove_unlocked_id: simplify user control counting sound: snd_ctl_remove_unlocked_id: simplify error paths sound: snd_ctl_elem_add: fix value count check
2009-09-10Merge branch 'topic/cs46xx' into for-linusTakashi Iwai
* topic/cs46xx: ALSA: cs46xx - Fix minimum period size
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