Eric Lee / smarc-fsl-linux-kernel

28 Jul, 2011

1 commit

  • 08a543ad3   irq: add irq_domain translation infrastructure ... Browse Code »

    This patch adds irq_domain infrastructure for translating from
    hardware irq numbers to linux irqs. This is particularly important
    for architectures adding device tree support because the current
    implementation (excluding PowerPC and SPARC) cannot handle
    translation for more than a single interrupt controller. irq_domain
    supports device tree translation for any number of interrupt
    controllers.

    This patch converts x86, Microblaze, ARM and MIPS to use irq_domain
    for device tree irq translation. x86 is untested beyond compiling it,
    irq_domain is enabled for MIPS and Microblaze, but the old behaviour is
    preserved until the core code is modified to actually register an
    irq_domain yet. On ARM it works and is required for much of the new
    ARM device tree board support.

    PowerPC has /not/ been converted to use this new infrastructure. It
    is still missing some features before it can replace the virq
    infrastructure already in powerpc (see documentation on
    irq_domain_map/unmap for details). Followup patches will add the
    missing pieces and migrate PowerPC to use irq_domain.

    SPARC has its own method of managing interrupts from the device tree
    and is unaffected by this change.

    Acked-by: Ralf Baechle
    Signed-off-by: Grant Likely

    Grant Likely
     

03 May, 2011

1 commit

23 Apr, 2011

1 commit

  • 7d8280624   genirq: Implement a generic interrupt chip ... Browse Code »

    Implement a generic interrupt chip, which is configurable and is able
    to handle the most common irq chip implementations.

    Signed-off-by: Thomas Gleixner
    Cc: linux-arm-kernel@lists.infradead.org
    Tested-by: H Hartley Sweeten
    Tested-by: Tony Lindgren
    Tested-by; Kevin Hilman

    Thomas Gleixner
     

12 Oct, 2010

2 commits

  • 78f90d91f   genirq: Remove the now unused sparse irq leftovers ... Browse Code »

    The move_irq_desc() function was only used due to the problem that the
    allocator did not free the old descriptors. So the descriptors had to
    be moved in create_irq_nr(). That's history.

    The code would have never been able to move active interrupt
    descriptors on affinity settings. That can be done in a completely
    different way w/o all this horror.

    Remove all of it.

    Signed-off-by: Thomas Gleixner
    Reviewed-by: Ingo Molnar

    Thomas Gleixner
     
  • 3795de236   genirq: Distangle kernel/irq/handle.c ... Browse Code »

    kernel/irq/handle.c has become a dumpground for random code in random
    order. Split out the irq descriptor management and the dummy irq_chip
    implementation into separate files. Cleanup the include maze while at
    it.

    No code change.

    Signed-off-by: Thomas Gleixner
    Reviewed-by: Ingo Molnar

    Thomas Gleixner
     

02 May, 2009

1 commit

  • 15e957d08   x86/irq: use move_irq_desc() in create_irq_nr() ... Browse Code »

    move_irq_desc() will try to move irq_desc to the home node if
    the allocated one is not correct, in create_irq_nr().

    ( This can happen on devices that are on different nodes that
    are using MSI, when drivers are loaded and unloaded randomly. )

    v2: fix non-smp build
    v3: add NUMA_IRQ_DESC to eliminate #ifdefs

    [ Impact: improve irq descriptor locality on NUMA systems ]

    Signed-off-by: Yinghai Lu
    Cc: Andrew Morton
    Cc: Suresh Siddha
    Cc: "Eric W. Biederman"
    Cc: Rusty Russell
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

28 Apr, 2009

1 commit

  • fcef5911c   x86/irq: remove leftover code from NUMA_MIGRATE_IRQ_DESC ... Browse Code »

    The original feature of migrating irq_desc dynamic was too fragile
    and was causing problems: it caused crashes on systems with lots of
    cards with MSI-X when user-space irq-balancer was enabled.

    We now have new patches that create irq_desc according to device
    numa node. This patch removes the leftover bits of the dynamic balancer.

    [ Impact: remove dead code ]

    Signed-off-by: Yinghai Lu
    Cc: Andrew Morton
    Cc: Suresh Siddha
    Cc: "Eric W. Biederman"
    Cc: Rusty Russell
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Yinghai Lu
     

31 Mar, 2009

1 commit

  • 0a0c5168d   PM: Introduce functions for suspending and resuming device interrupts ... Browse Code »

    Introduce helper functions allowing us to prevent device drivers from
    getting any interrupts (without disabling interrupts on the CPU)
    during suspend (or hibernation) and to make them start to receive
    interrupts again during the subsequent resume. These functions make it
    possible to keep timer interrupts enabled while the "late" suspend and
    "early" resume callbacks provided by device drivers are being
    executed. In turn, this allows device drivers' "late" suspend and
    "early" resume callbacks to sleep, execute ACPI callbacks etc.

    The functions introduced here will be used to rework the handling of
    interrupts during suspend (hibernation) and resume. Namely,
    interrupts will only be disabled on the CPU right before suspending
    sysdevs, while device drivers will be prevented from receiving
    interrupts, with the help of the new helper function, before their
    "late" suspend callbacks run (and analogously during resume).

    Signed-off-by: Rafael J. Wysocki
    Acked-by: Ingo Molnar

    Rafael J. Wysocki
     

17 Dec, 2008

1 commit

  • 48a1b10af   x86, sparseirq: move irq_desc according to smp_affinity, v7 ... Browse Code »

    Impact: improve NUMA handling by migrating irq_desc on smp_affinity changes

    if CONFIG_NUMA_MIGRATE_IRQ_DESC is set:

    - make irq_desc to go with affinity aka irq_desc moving etc
    - call move_irq_desc in irq_complete_move()
    - legacy irq_desc is not moved, because they are allocated via static array

    for logical apic mode, need to add move_desc_in_progress_in_same_domain,
    otherwise it will not be moved ==> also could need two phases to get
    irq_desc moved.

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

    Yinghai Lu
     

12 Feb, 2007

1 commit

  • 5ea817699   [PATCH] sort the devres mess out ... Browse Code »

    * Split the implementation-agnostic stuff in separate files.
    * Make sure that targets using non-default request_irq() pull
    kernel/irq/devres.o
    * Introduce new symbols (HAS_IOPORT and HAS_IOMEM) defaulting to positive;
    allow architectures to turn them off (we needed these symbols anyway for
    dependencies of quite a few drivers).
    * protect the ioport-related parts of lib/devres.o with CONFIG_HAS_IOPORT.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

30 Jun, 2006

2 commits

  • dd87eb3a2   [PATCH] genirq: add irq-chip support ... Browse Code »

    Enable platforms to use the irq-chip and irq-flow abstractions: allow setting
    of the chip, the type and provide highlevel handlers for common irq-flows.

    [rostedt@goodmis.org: misroute-irq: Don't call desc->chip->end because of edge interrupts]
    Signed-off-by: Thomas Gleixner
    Signed-off-by: Ingo Molnar
    Cc: Benjamin Herrenschmidt
    Signed-off-by: Steven Rostedt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Thomas Gleixner
     
  • a4633adcd   [PATCH] genirq: add genirq sw IRQ-retrigger ... Browse Code »

    Enable platforms that do not have a hardware-assisted hardirq-resend mechanism
    to resend them via a softirq-driven IRQ emulation mechanism.

    Signed-off-by: Thomas Gleixner
    Signed-off-by: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Thomas Gleixner
     

11 Apr, 2006

1 commit

26 Mar, 2006

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