Eric Lee / smarc-fsl-linux-kernel

29 Mar, 2011

1 commit

11 Feb, 2011

1 commit

  • 4c4231ea2   [PARISC] Convert to new irq_chip functions ... Browse Code »

    Convert all the parisc driver interrupt handlers (dino, eisa, gsc,
    iosapic and superio) as well as the cpu interrupts. Prepare
    show_interrupts for GENERIC_HARDIRQS_NO_DEPRECATED and finally selects
    that Kconfig option

    [jejb: compile and testing fixes]
    Signed-off-by: Thomas Gleixner
    Signed-off-by: James Bottomley

    Thomas Gleixner
     

05 Dec, 2010

1 commit

  • 51890613f   parisc: convert the rest of the irq handlers to simple/percpu ... Browse Code »

    The generic conversion eliminates the spurious no_ack and no_end
    routines, converts all the cascaded handlers to handle_simple_irq() and
    makes iosapic use a modified handle_percpu_irq() to become the same as
    the CPU irq's. This isn't an essential change, but it eliminates the
    mask/unmask overhead of handle_level_irq().

    Signed-off-by: James Bottomley
    Tested-by: Helge Deller
    Signed-off-by: Kyle McMartin

    James Bottomley
     

14 Oct, 2010

2 commits

07 Mar, 2010

1 commit

16 Dec, 2009

1 commit

03 Jul, 2009

2 commits

  • 0c5cb7919   parisc: superio: fix build breakage ... Browse Code »

    Usage of parport_pc_probe_port was changed in 28783eb52
    (parport: Fix various uses of parport_pc).

    It introduced this build error:
    drivers/parisc/superio.c: In function 'superio_parport_init':
    drivers/parisc/superio.c:437: error: too few arguments to function
    'parport_pc_probe_port'

    Fix it.

    Signed-off-by: Alexander Beregalov
    Signed-off-by: Kyle McMartin

    Alexander Beregalov
     
  • dfe075650   parisc: remove obsolete hw_interrupt_type ... Browse Code »

    The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have
    been kept around for migration reasons. After more than two years it's
    time to remove them finally.

    This patch cleans up one of the remaining users. When all such patches
    hit mainline we can remove the defines and typedefs finally.

    Impact: cleanup

    Convert the last remaining users to struct irq_chip and remove the
    define.

    Signed-off-by: Thomas Gleixner
    Signed-off-by: Andrew Morton
    Signed-off-by: Kyle McMartin

    Thomas Gleixner
     

14 Apr, 2009

1 commit

14 Jan, 2009

1 commit

  • 125c97d8a   fix early_serial_setup() regression ... Browse Code »

    Commit b430428a188e8a434325e251d0704af4b88b4711 ("8250: Don't clobber
    spinlocks.") introduced a regression on the parisc architecture, which
    broke the handover to the serial port at boottime.

    early_serial_setup() was changed to only copy a subset of the uart_port
    fields, and sadly the "type" and "line" fields were forgotten and thus
    the serial port was not initialized and could not be used for a
    handover. This patch fixes this by copying the missing fields.

    As this change to early_serial_setup() doesn't need an initialized
    spinlock in the uart_port struct any longer, we can drop the spinlock
    initialization in the superio driver.

    Cc: David Daney
    Cc: Tomaso Paoletti
    Cc: Andrew Morton
    Cc: Alan Cox
    Acked-by: Kyle McMartin
    Cc: linux-parisc@vger.kernel.org
    Signed-off-by: Helge Deller
    Signed-off-by: Linus Torvalds

    Helge Deller
     

16 Oct, 2008

1 commit

  • 08678b084   generic: sparse irqs: use irq_desc() together with dyn_array, instead of irq_desc[] ... Browse Code »

    add CONFIG_HAVE_SPARSE_IRQ to for use condensed array.
    Get rid of irq_desc[] array assumptions.

    Preallocate 32 irq_desc, and irq_desc() will try to get more.

    ( No change in functionality is expected anywhere, except the odd build
    failure where we missed a code site or where a crossing commit itroduces
    new irq_desc[] usage. )

    v2: according to Eric, change get_irq_desc() to irq_desc()

    Signed-off-by: Yinghai Lu
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

18 Oct, 2007

1 commit

18 Jul, 2007

1 commit

28 May, 2007

1 commit

  • 8c678b101   [PARISC] fix section mismatch in superio serial drivers ... Browse Code »

    This patch fixes two section mismatches in superio serial setup:
    WARNING: drivers/built-in.o(.text.superio_serial_init+0x78): Section mismatch: reference to .init.text:early_serial_setup (after 'superio_serial_init')
    WARNING: drivers/built-in.o(.text.superio_serial_init+0xa4): Section mismatch: reference to .init.text:early_serial_setup (after 'superio_serial_init')

    Signed-off-by: Helge Deller
    Signed-off-by: Kyle McMartin

    Helge Deller
     

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
     

03 Jul, 2006

1 commit

30 Jun, 2006

1 commit

  • d1bef4ed5   [PATCH] genirq: rename desc->handler to desc->chip ... Browse Code »

    This patch-queue improves the generic IRQ layer to be truly generic, by adding
    various abstractions and features to it, without impacting existing
    functionality.

    While the queue can be best described as "fix and improve everything in the
    generic IRQ layer that we could think of", and thus it consists of many
    smaller features and lots of cleanups, the one feature that stands out most is
    the new 'irq chip' abstraction.

    The irq-chip abstraction is about describing and coding and IRQ controller
    driver by mapping its raw hardware capabilities [and quirks, if needed] in a
    straightforward way, without having to think about "IRQ flow"
    (level/edge/etc.) type of details.

    This stands in contrast with the current 'irq-type' model of genirq
    architectures, which 'mixes' raw hardware capabilities with 'flow' details.
    The patchset supports both types of irq controller designs at once, and
    converts i386 and x86_64 to the new irq-chip design.

    As a bonus side-effect of the irq-chip approach, chained interrupt controllers
    (master/slave PIC constructs, etc.) are now supported by design as well.

    The end result of this patchset intends to be simpler architecture-level code
    and more consolidation between architectures.

    We reused many bits of code and many concepts from Russell King's ARM IRQ
    layer, the merging of which was one of the motivations for this patchset.

    This patch:

    rename desc->handler to desc->chip.

    Originally i did not want to do this, because it's a big patch. But having
    both "desc->handler", "desc->handle_irq" and "action->handler" caused a
    large degree of confusion and made the code appear alot less clean than it
    truly is.

    I have also attempted a dual approach as well by introducing a
    desc->chip alias - but that just wasnt robust enough and broke
    frequently.

    So lets get over with this quickly. The conversion was done automatically
    via scripts and converts all the code in the kernel.

    This renaming patch is the first one amongst the patches, so that the
    remaining patches can stay flexible and can be merged and split up
    without having some big monolithic patch act as a merge barrier.

    [akpm@osdl.org: build fix]
    [akpm@osdl.org: another build fix]
    Signed-off-by: Ingo Molnar
    Signed-off-by: Thomas Gleixner
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ingo Molnar
     

22 Apr, 2006

1 commit

31 Mar, 2006

1 commit

25 Mar, 2006

1 commit

23 Jan, 2006

1 commit

18 Nov, 2005

1 commit

22 Oct, 2005

1 commit

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