Eric Lee / smarc-fsl-linux-kernel

24 Mar, 2006

1 commit

23 Mar, 2006

2 commits

  • 394e3902c   [PATCH] more for_each_cpu() conversions ... Browse Code »

    When we stop allocating percpu memory for not-possible CPUs we must not touch
    the percpu data for not-possible CPUs at all. The correct way of doing this
    is to test cpu_possible() or to use for_each_cpu().

    This patch is a kernel-wide sweep of all instances of NR_CPUS. I found very
    few instances of this bug, if any. But the patch converts lots of open-coded
    test to use the preferred helper macros.

    Cc: Mikael Starvik
    Cc: David Howells
    Acked-by: Kyle McMartin
    Cc: Anton Blanchard
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: Paul Mundt
    Cc: "David S. Miller"
    Cc: William Lee Irwin III
    Cc: Andi Kleen
    Cc: Christian Zankel
    Cc: Philippe Elie
    Cc: Nathan Scott
    Cc: Jens Axboe
    Cc: Eric Dumazet
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     
  • 0b2fcfdb8   [PATCH] atomic: add_unless cmpxchg optimise ... Browse Code »

    Without branch hints, the very unlikely chance of the loop repeating due to
    cmpxchg failure is unrolled with gcc-4 that I have tested.

    Improve this for architectures with a native cas/cmpxchg. llsc archs
    should try to implement this natively.

    Signed-off-by: Nick Piggin
    Cc: Andi Kleen
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: "David S. Miller"
    Cc: Roman Zippel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

22 Mar, 2006

1 commit

  • 2492ecc1a   [PATCH] mm: remove set_pgdir leftovers ... Browse Code »

    set_pgdir isn't needed anymore for a very long time. Remove the leftover
    implementation on sh64 and the stub on s390.

    Signed-off-by: Christoph Hellwig
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Paul Mundt
    Cc: Richard Curnow
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

07 Mar, 2006

1 commit

21 Feb, 2006

1 commit

18 Feb, 2006

1 commit

  • 255acee70   [PATCH] s390: additional_cpus parameter ... Browse Code »

    Introduce additional_cpus command line option. By default no additional cpu
    can be attached to the system anymore. Only the cpus present at IPL time can
    be switched on/off. If it is desired that additional cpus can be attached to
    the system the maximum number of additional cpus needs to be specified with
    this option.

    This change is necessary in order to limit the waste of per_cpu data
    structures.

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

    Heiko Carstens
     

16 Feb, 2006

1 commit

  • 5f6164f30   [PATCH] add asm-generic/mman.h ... Browse Code »

    Make new MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK consistent across all
    arches. The idea is to make it possible to use them portably even before
    distros include them in libc headers.

    Move common flags to asm-generic/mman.h

    Signed-off-by: Michael S. Tsirkin
    Cc: Roland Dreier
    Cc: Badari Pulavarty
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Michael S. Tsirkin
     

15 Feb, 2006

1 commit

  • f82256616   [PATCH] madvise MADV_DONTFORK/MADV_DOFORK ... Browse Code »

    Currently, copy-on-write may change the physical address of a page even if the
    user requested that the page is pinned in memory (either by mlock or by
    get_user_pages). This happens if the process forks meanwhile, and the parent
    writes to that page. As a result, the page is orphaned: in case of
    get_user_pages, the application will never see any data hardware DMA's into
    this page after the COW. In case of mlock'd memory, the parent is not getting
    the realtime/security benefits of mlock.

    In particular, this affects the Infiniband modules which do DMA from and into
    user pages all the time.

    This patch adds madvise options to control whether memory range is inherited
    across fork. Useful e.g. for when hardware is doing DMA from/into these
    pages. Could also be useful to an application wanting to speed up its forks
    by cutting large areas out of consideration.

    Signed-off-by: Michael S. Tsirkin
    Acked-by: Hugh Dickins
    Cc: Michael Kerrisk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Michael S. Tsirkin
     

13 Feb, 2006

1 commit

12 Feb, 2006

4 commits

08 Feb, 2006

2 commits

04 Feb, 2006

3 commits

02 Feb, 2006

2 commits

15 Jan, 2006

3 commits

13 Jan, 2006

4 commits

11 Jan, 2006

3 commits

  • af4cd3fe4   [PATCH] Generic ioctl.h ... Browse Code »

    Most arches copied the i386 ioctl.h. Combine them into a generic header.

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

    Brian Gerst
     
  • bf2083050   [PATCH] Kdump: powerpc and s390 build failure fix ... Browse Code »

    )

    From: Vivek Goyal

    crash_setup_regs() is an architecture dependent function which is called in
    architecture independent section. So every architecture supporting kexec
    should at least provide a dummy definition of crash_setup_regs() even if
    crash dumping is not implemented yet, to avoid build failures.

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

    akpm@osdl.org
     
  • cc5716587   [PATCH] kdump: dynamic per cpu allocation of memory for saving cpu registers ... Browse Code »

    - In case of system crash, current state of cpu registers is saved in memory
    in elf note format. So far memory for storing elf notes was being allocated
    statically for NR_CPUS.

    - This patch introduces dynamic allocation of memory for storing elf notes.
    It uses alloc_percpu() interface. This should lead to better memory usage.

    - Introduced based on Andi Kleen's and Eric W. Biederman's suggestions.

    - This patch also moves memory allocation for elf notes from architecture
    dependent portion to architecture independent portion. Now crash_notes is
    architecture independent. The whole idea is that size of memory to be
    allocated per cpu (MAX_NOTE_BYTES) can be architecture dependent and
    allocation of this memory can be architecture independent.

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

    Vivek Goyal
     

10 Jan, 2006

2 commits

09 Jan, 2006

2 commits

  • f8aaeacec   [PATCH] consolidate asm/futex.h ... Browse Code »

    Most of the architectures have the same asm/futex.h. This consolidates them
    into asm-generic, with the arches including it from their own asm/futex.h.

    In the case of UML, this reverts the old broken futex.h and goes back to using
    the same one as almost everyone else.

    Signed-off-by: Jeff Dike
    Cc: Paolo 'Blaisorblade' Giarrusso
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     
  • 1fd73c6b6   [PATCH] Kill L1_CACHE_SHIFT_MAX ... Browse Code »

    Kill L1_CACHE_SHIFT from all arches. Since L1_CACHE_SHIFT_MAX is not used
    anymore with the introduction of INTERNODE_CACHE, kill L1_CACHE_SHIFT_MAX.

    Signed-off-by: Ravikiran Thirumalai
    Signed-off-by: Shai Fultheim
    Signed-off-by: Andi Kleen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Ravikiran G Thirumalai
     

07 Jan, 2006

5 commits

  • 347a8dc3b   [PATCH] s390: cleanup Kconfig ... Browse Code »

    Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X,
    ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by
    S390, 64BIT and COMPAT.

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

    Martin Schwidefsky
     
  • 8129ee164   [PATCH] s390: qdio V=V pass-through ... Browse Code »

    New feature V=V qdio pass-through.

    QDIO and HiperSockets processing in z/VM V=V guest environments (as well as
    V=R with z/VM running in LPAR mode) requires shadowing of all QDIO
    architecture queue elements. Especially the shadowing of SBALs and SLSBs
    structures in the hypervisor, and the need to issue SIGA SYNC operations to
    observe state changes, eventually causes significant CPU processing overhead
    in the hypervisor.

    The QDIO pass-through support for V=V guests avoids the shadowing of SBALs and
    SLSBs. This significantly reduces the hypervisor overhead for QDIO based I/O.

    Signed-off-by: Frank Pavlic
    Signed-off-by: Martin Schwidefsky
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Frank Pavlic
     
  • cfb1b5559   [PATCH] s390: move s390_root_dev_* out of the cio layer ... Browse Code »

    Extract the s390_root_dev_* functions from the common I/O layer as they are
    also used by non-ccw device drivers.

    Signed-off-by: Carsten Otte
    Signed-off-by: Martin Schwidefsky
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Carsten Otte
     
  • a63a4931c   [PATCH] s390: uaccess warnings ... Browse Code »

    Convert __access_ok to an inline C function and change __get_user primitive to
    avoid uaccess compiler warnings.

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

    Martin Schwidefsky
     
  • 56dc6a88e   [PATCH] s390: cms volume label definitions ... Browse Code »

    Moved definition of CMS volume label to vtoc.h and modify partitions/ibm.c to
    use this volume label definition instead of anonymous array.

    Signed-off-by: Peter Oberparleiter
    Signed-off-by: Martin Schwidefsky
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Peter Oberparleiter