Eric Lee / smarc-fsl-linux-kernel

15 Feb, 2008

1 commit

  • 2ebda63b0   Fix compile of swim3 as module ... Browse Code »

    The current pmac32_defconfig fails to build with the following error:

    Building modules, stage 2.
    ERROR: "check_media_bay" [drivers/block/swim3.ko] undefined!
    WARNING: modpost: Found 23 section mismatch(es).
    To see full details build your kernel with:
    'make CONFIG_DEBUG_SECTION_MISMATCH=y'
    make[2]: *** [__modpost] Error 1

    This patch fixes that.

    Signed-off-by: Tony Breeds
    Acked-by: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Acked-by: Bartlomiej Zolnierkiewicz
    Cc: Josh Boyer
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tony Breeds
     

24 Jul, 2007

1 commit

  • 165125e1e   [BLOCK] Get rid of request_queue_t typedef ... Browse Code »

    Some of the code has been gradually transitioned to using the proper
    struct request_queue, but there's lots left. So do a full sweet of
    the kernel and get rid of this typedef and replace its uses with
    the proper type.

    Signed-off-by: Jens Axboe

    Jens Axboe
     

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

  • 14b1ffb57   [POWERPC] Update swim3 printk after blkdev.h change ... Browse Code »

    drivers/block/swim3.c: In function 'swim3_interrupt':
    drivers/block/swim3.c:640: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'unsigned int'
    drivers/block/swim3.c:746: warning: format '%lx' expects type 'long unsigned int', but argument 3 has type 'unsigned int'

    Update printk format string after blkdev.h change:
    Split struct request ->flags into two parts

    Signed-off-by: Olaf Hering
    Signed-off-by: Paul Mackerras

    Olaf Hering
     

01 Oct, 2006

1 commit

  • cdd602621   [PATCH] Remove ->rq_status from struct request ... Browse Code »

    After Christophs SCSI change, the only usage left is RQ_ACTIVE
    and RQ_INACTIVE. The block layer sets RQ_INACTIVE right before freeing
    the request, so any check for RQ_INACTIVE in a driver is a bug and
    indicates use-after-free.

    So kill/clean the remaining users, straight forward.

    Signed-off-by: Jens Axboe

    Jens Axboe
     

03 Jul, 2006

1 commit

01 Jul, 2006

1 commit

27 Jun, 2006

3 commits

09 Jan, 2006

1 commit

  • cc5d0189b   [PATCH] powerpc: Remove device_node addrs/n_addr ... Browse Code »

    The pre-parsed addrs/n_addrs fields in struct device_node are finally
    gone. Remove the dodgy heuristics that did that parsing at boot and
    remove the fields themselves since we now have a good replacement with
    the new OF parsing code. This patch also fixes a bunch of drivers to use
    the new code instead, so that at least pmac32, pseries, iseries and g5
    defconfigs build.

    Signed-off-by: Benjamin Herrenschmidt
    Signed-off-by: Paul Mackerras

    Benjamin Herrenschmidt
     

08 Nov, 2005

1 commit

11 Sep, 2005

1 commit

28 Jun, 2005

1 commit

  • 8c8709334   [PATCH] ppc32: Remove CONFIG_PMAC_PBOOK ... Browse Code »

    This patch removes CONFIG_PMAC_PBOOK (PowerBook support). This is now
    split into CONFIG_PMAC_MEDIABAY for the actual hotswap bay that some
    powerbooks have, CONFIG_PM for power management related code, and just left
    out of any CONFIG_* option for some generally useful stuff that can be used
    on non-laptops as well.

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

    Benjamin Herrenschmidt
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds