Eric Lee / smarc-fsl-linux-kernel

05 Oct, 2006

2 commits

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     
  • fefd26b3b   Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/configh ... Browse Code »

    * master.kernel.org:/pub/scm/linux/kernel/git/davej/configh:
    Remove all inclusions of

    Manually resolved trivial path conflicts due to removed files in
    the sound/oss/ subdirectory.

    Linus Torvalds
     

04 Oct, 2006

7 commits

  • ece7f77b8   [PATCH] kill sound/oss/*_syms.c ... Browse Code »

    Move all EXPORT_SYMBOL's from sound/oss/*_syms.c to the files with the
    actual functions.

    Signed-off-by: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     
  • d56b9b9c4   [PATCH] The scheduled removal of some OSS drivers ... Browse Code »
    43

    This patch contains the scheduled removal of OSS drivers that:
    - have ALSA drivers for the same hardware without known regressions and
    - whose Kconfig options have been removed in 2.6.17.

    [michal.k.k.piotrowski@gmail.com: build fix]
    Signed-off-by: Adrian Bunk
    Signed-off-by: Michal Piotrowski
    Cc: David Woodhouse
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     
  • 038b0a6d8   Remove all inclusions of <linux/config.h> ... Browse Code »

    kbuild explicitly includes this at build time.

    Signed-off-by: Dave Jones

    Dave Jones
     
  • 708e16892   Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (39 commits)
    Add missing maintainer countries in CREDITS
    Fix bytes kilobytes typo in Kconfig for ramdisk
    fix a typo in Documentation/pi-futex.txt
    BUG_ON conversion for fs/xfs/
    BUG_ON() conversion in fs/nfsd/
    BUG_ON conversion for fs/reiserfs
    BUG_ON cleanups in arch/i386
    BUG_ON cleanup in drivers/net/tokenring/
    BUG_ON cleanup for drivers/md/
    kerneldoc-typo in led-class.c
    debugfs: spelling fix
    rcutorture: Fix incorrect description of default for nreaders parameter
    parport: Remove space in function calls
    Michal Wronski: update contact info
    Spelling fix: "control" instead of "cotrol"
    reboot parameter in Documentation/kernel-parameters.txt
    Fix copy&waste bug in comment in scripts/kernel-doc
    remove duplicate "until" from kernel/workqueue.c
    ite_gpio fix tabbage
    fix file specification in comments
    ...

    Fixed trivial path conflicts due to removed files:
    arch/mips/dec/boot/decstation.c, drivers/char/ite_gpio.c

    Linus Torvalds
     
  • f30c22695   fix file specification in comments ... Browse Code »

    Many files include the filename at the beginning, serveral used a wrong one.

    Signed-off-by: Uwe Zeisberger
    Signed-off-by: Adrian Bunk

    Uwe Zeisberger
     
  • 44c09201a   more misc typo fixes ... Browse Code »

    Signed-off-by: Adrian Bunk

    Matt LaPlante
     
  • af8b12871   [MIPS] Remove IT8172-based platforms, ITE 8172G and Globespan IVR support. ... Browse Code »

    As per feature-removal-schedule.txt.

    Signed-off-by: Yoichi Yuasa
    Acked-by: Alan Cox
    Signed-off-by: Ralf Baechle

    Yoichi Yuasa
     

03 Oct, 2006

1 commit

02 Oct, 2006

1 commit

  • 96b644bde   [PATCH] namespaces: utsname: use init_utsname when appropriate ... Browse Code »

    In some places, particularly drivers and __init code, the init utsns is the
    appropriate one to use. This patch replaces those with a the init_utsname
    helper.

    Changes: Removed several uses of init_utsname(). Hope I picked all the
    right ones in net/ipv4/ipconfig.c. These are now changed to
    utsname() (the per-process namespace utsname) in the previous
    patch (2/7)

    [akpm@osdl.org: CIFS fix]
    Signed-off-by: Serge E. Hallyn
    Cc: Kirill Korotaev
    Cc: "Eric W. Biederman"
    Cc: Herbert Poetzl
    Cc: Andrey Savochkin
    Cc: Serge Hallyn
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Serge E. Hallyn
     

01 Oct, 2006

7 commits

  • ee0b3e671   [PATCH] Remove readv/writev methods and use aio_read/aio_write instead ... Browse Code »

    This patch removes readv() and writev() methods and replaces them with
    aio_read()/aio_write() methods.

    Signed-off-by: Badari Pulavarty
    Signed-off-by: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Badari Pulavarty
     
  • 1cfee2b3c   [PATCH] trident: fix pci_dev reference counting and buglet ... Browse Code »

    Switch trident to use pci_get/put_dev properly. Also fix a bug where the
    driver erroneously passed pdev not NULL to a second search. This happened
    to always work except with pci=reverse because of chip ordering.

    Signed-off-by: Alan Cox
    Signed-off-by: Muli Ben-Yehuda
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     
  • c53421b18   [PATCH] proper flags type of spin_lock_irqsave() ... Browse Code »

    Convert various spin_lock_irqsave() callers to correctly use `unsigned long'.

    Signed-off-by: Alexey Dobriyan
    Cc: Miles Bader
    Cc: "Luck, Tony"
    Acked-by: Kyle McMartin
    Cc: Jean Delvare
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     
  • a78b464a2   [PATCH] cs46xx OSS: switch to pci_get_device ... Browse Code »

    Fairly trivial change in this case

    Signed-off-by: Alan Cox
    Cc: Greg KH
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     
  • 14fef6414   [PATCH] via82cxxx_audio: Use pci_get_device ... Browse Code »

    pci_find_device is not refcounting and should be getting killed off.

    Signed-off-by: Alan Cox
    Cc: Greg KH
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     
  • 52978be63   [PATCH] kmemdup: some users ... Browse Code »

    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     
  • 9442e691e   [PATCH] maximum latency tracking: ALSA support ... Browse Code »

    Add maximum latency tracking to the ALSA subsystem for PCM playback. In
    ALSA, the playback application controls the buffer size and thus indirectly
    the period of latency that it can deal with. This patch uses 75% of the
    total available latency as threshold to announce to the latency subsystem;
    While 75% is a crude heuristic it's a quite reasonable one; the remaining
    25% can be used for all driver processing for the next samples which is
    also proportional to the size of the buffer.

    With ogg123 a latency setting of about 4msec was seen (at 44Khz), while
    with the "play" command a much longer maximum tolerable latency was seen.
    Other, more multimedia oriented players as well as games, will have a lot
    smaller buffers to allow better synchronization and those will actually get
    into the latency domains where there is impact on the power management
    rules.

    Signed-off-by: Takashi Iwai
    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Takashi Iwai
     

30 Sep, 2006

6 commits

  • b9dd6ffc3   [PATCH] build sound/sound_firmware.c only for OSS ... Browse Code »

    All sound/sound_firmware.c contains is mod_firmware_load() that is a legacy
    API only used by some OSS drivers.

    This patch builds it into an own sound_firmware module that is only built
    depending on CONFIG_SOUND_PRIME making the kernel slightly smaller for ALSA
    users.

    [alan@lxorguk.ukuu.org.uk: comment fix]
    Signed-off-by: Adrian Bunk
    Acked-by: Takashi Iwai
    Signed-off-by: Alan Cox
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     
  • cdae96958   [PATCH] remove sound/oss/COPYING ... Browse Code »

    This appears to be a verbatim copy-n-paste of the GPL.

    Cc: Pavel Machek
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     
  • 6c2d8b5dc   [PATCH] sound/sparc/dbri: Use ARRAY_SIZE macro ... Browse Code »

    Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0])

    Signed-off-by: Tobias Klauser
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tobias Klauser
     
  • 2ad3479de   [PATCH] sound/mips/au1x00: Use ARRAY_SIZE macro ... Browse Code »

    Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0])

    Signed-off-by: Tobias Klauser
    Cc: Ralf Baechle
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tobias Klauser
     
  • 99f932f02   [PATCH] CONFIG_PM=n slim: sound/oss/cs46xx.c ... Browse Code »

    Remove some code which is unneeded if CONFIG_PM=n.

    * Make suspend/resume registration look like the rest of drivers:
    #ifdef CONFIG_PM in struct pci_driver, prototypes, actual hooks.
    * Drop CS46XX_ACPI_SUPPORT. It logically duplicated CONFIG_PM. It was
    hardcoded to 1 approx forever (ALSA merge just moved driver to
    sound/oss/).
    * After previous point, sound/oss/cs46xxpm-24.h removed as being useless.
    * As side effect selling (unused) static inline functions as suspend/resume
    hooks funkiness removed too.

    Signed-off-by: Alexey Dobriyan
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     
  • aadcc2eef   [PATCH] CONFIG_PM=n slim: sound/oss/trident.c ... Browse Code »

    Remove some code which is unneeded if CONFIG_PM=n.

    Signed-off-by: Alexey Dobriyan
    Ackde-by: Muli Ben-Yehuda
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

28 Sep, 2006

1 commit

  • 38e2bfc94   USB: Dealias -110 code (more complete) ... Browse Code »

    The purpose of this patch is to split off the case when a device does
    not reply on the lower level (which is reported by HC hardware), and
    a case when the device accepted the request, but does not reply at
    upper level. This redefinition allows to diagnose issues easier,
    without asking the user if the -110 happened "immediately".

    The usbmon splits such cases already thanks to its timestamp, but
    it's not always available.

    I adjusted all drivers which I found affected (by searching for "urb").
    Out of tree drivers may suffer a little bit, but I do not expect much
    breakage. At worst they may print a few messages.

    Signed-off-by: Pete Zaitcev
    Signed-off-by: Greg Kroah-Hartman

    Pete Zaitcev
     

27 Sep, 2006

2 commits

26 Sep, 2006

2 commits

25 Sep, 2006

1 commit

23 Sep, 2006

10 commits