Eric Lee / smarc-fsl-linux-kernel

08 Dec, 2006

3 commits

05 Dec, 2006

1 commit

02 Dec, 2006

1 commit

24 Nov, 2006

2 commits

22 Nov, 2006

1 commit

  • 65f27f384   WorkStruct: Pass the work_struct pointer instead of context data ... Browse Code »

    Pass the work_struct pointer to the work function rather than context data.
    The work function can use container_of() to work out the data.

    For the cases where the container of the work_struct may go away the moment the
    pending bit is cleared, it is made possible to defer the release of the
    structure by deferring the clearing of the pending bit.

    To make this work, an extra flag is introduced into the management side of the
    work_struct. This governs auto-release of the structure upon execution.

    Ordinarily, the work queue executor would release the work_struct for further
    scheduling or deallocation by clearing the pending bit prior to jumping to the
    work function. This means that, unless the driver makes some guarantee itself
    that the work_struct won't go away, the work function may not access anything
    else in the work_struct or its container lest they be deallocated.. This is a
    problem if the auxiliary data is taken away (as done by the last patch).

    However, if the pending bit is *not* cleared before jumping to the work
    function, then the work function *may* access the work_struct and its container
    with no problems. But then the work function must itself release the
    work_struct by calling work_release().

    In most cases, automatic release is fine, so this is the default. Special
    initiators exist for the non-auto-release case (ending in _NAR).

    Signed-Off-By: David Howells

    David Howells
     

17 Nov, 2006

2 commits

05 Nov, 2006

1 commit

03 Nov, 2006

2 commits

17 Oct, 2006

1 commit

  • 43f82216f   Merge git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
    Input: fm801-gp - handle errors from pci_enable_device()
    Input: gameport core - handle errors returned by device_bind_driver()
    Input: serio core - handle errors returned by device_bind_driver()
    Lockdep: fix compile error in drivers/input/serio/serio.c
    Input: serio - add lockdep annotations
    Lockdep: add lockdep_set_class_and_subclass() and lockdep_set_subclass()
    Input: atkbd - supress "too many keys" error message
    Input: i8042 - supress ACK/NAKs when blinking during panic
    Input: add missing exports to fix modular build

    Linus Torvalds
     

16 Oct, 2006

1 commit

12 Oct, 2006

1 commit

11 Oct, 2006

2 commits

10 Oct, 2006

1 commit

07 Oct, 2006

1 commit

05 Oct, 2006

1 commit

  • 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
     

04 Oct, 2006

1 commit

02 Oct, 2006

1 commit

  • a12f66fcc   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input ... Browse Code »

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits)
    Input: wistron - add support for Acer TravelMate 2424NWXCi
    Input: wistron - fix setting up special buttons
    Input: add KEY_BLUETOOTH and KEY_WLAN definitions
    Input: add new BUS_VIRTUAL bus type
    Input: add driver for stowaway serial keyboards
    Input: make input_register_handler() return error codes
    Input: remove cruft that was needed for transition to sysfs
    Input: fix input module refcounting
    Input: constify input core
    Input: libps2 - rearrange exports
    Input: atkbd - support Microsoft Natural Elite Pro keyboards
    Input: i8042 - disable MUX mode on Toshiba Equium A110
    Input: i8042 - get rid of polling timer
    Input: send key up events at disconnect
    Input: constify psmouse driver
    Input: i8042 - add Amoi to the MUX blacklist
    Input: logips2pp - add sugnature 56 (Cordless MouseMan Wheel), cleanup
    Input: add driver for Touchwin serial touchscreens
    Input: add driver for Touchright serial touchscreens
    Input: add driver for Penmount serial touchscreens
    ...

    Linus Torvalds
     

01 Oct, 2006

1 commit

  • 30cbc2221   [PATCH] update legacy io handling for pmac ... Browse Code »

    ppc can boot one single binary on prep, chrp and pmac boards. ppc64 can
    boot one single binary on pseries and G5 boards. pmac has no legacy io,
    probing for PC style legacy hardware (or accessing the legacy io area
    regulary) may lead to a hard crash:

    * add check for parport_pc, exit on pmac. 32bit chrp has no
    ->check_legacy_ioport, the probe is always called. 64bit chrp has
    check_legacy_ioport, check for a "parallel" node

    * add check for isapnp, only PReP boards may have real ISA slots. 32bit
    PReP will have no ->check_legacy_ioport, the probe is always called.

    * update code in i8042_platform_init. Run ->check_legacy_ioport first,
    always call request_region. No functional change. Remove whitespace
    before i8042_reset init.

    Signed-off-by: Olaf Hering
    Acked-by: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Adam Belay
    Cc: Dmitry Torokhov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Olaf Hering
     

14 Sep, 2006

3 commits

11 Sep, 2006

1 commit

09 Aug, 2006

1 commit

19 Jul, 2006

1 commit

07 Jul, 2006

1 commit

04 Jul, 2006

2 commits

  • 3aceafc1e   [PATCH] lockdep: annotate serio ... Browse Code »

    The PS/2 code has a natural device order and there is a one level recursion in
    this device order in terms of the cmd_mutex; annotate this explicit recursion
    as ok.

    Has no effect on non-lockdep kernels.

    Signed-off-by: Arjan van de Ven
    Cc: Dmitry Torokhov
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     
  • 6b8f3ef45   [PATCH] sparc i8042 build fix ... Browse Code »

    drivers/input/serio/i8042-sparcio.h:91: error: '__mod_of_device_table' aliased to undefined symbol 'i8042_match'

    Cc: Dmitry Torokhov
    DESC
    sparc: resource warning fix
    EDESC
    From: Andrew Morton

    sound/sparc/amd7930.c: In function 'amd7930_attach_common':
    sound/sparc/amd7930.c:1040: warning: format '%08lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t'

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

    Andrew Morton
     

03 Jul, 2006

1 commit

01 Jul, 2006

1 commit

30 Jun, 2006

2 commits

  • f57caaefa   [SERIO] i8042-sparcio.h: Convert to of_driver framework. ... Browse Code »

    Signed-off-by: David S. Miller

    David S. Miller
     
  • 602cada85   Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6 ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
    [PATCH] devfs: Remove it from the feature_removal.txt file
    [PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
    [PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
    [PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
    [PATCH] devfs: Remove devfs_remove() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
    [PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
    [PATCH] devfs: Remove devfs support from the sound subsystem
    [PATCH] devfs: Remove devfs support from the ide subsystem.
    [PATCH] devfs: Remove devfs support from the serial subsystem
    [PATCH] devfs: Remove devfs from the init code
    [PATCH] devfs: Remove devfs from the partition code
    ...

    Linus Torvalds
     

28 Jun, 2006

1 commit

27 Jun, 2006

1 commit

24 Jun, 2006

1 commit