Eric Lee / smarc-fsl-linux-kernel

17 May, 2008

1 commit

04 May, 2008

1 commit

  • d35c7b0e5   unified (weak) sys_pipe implementation ... Browse Code »

    This replaces the duplicated arch-specific versions of "sys_pipe()" with
    one unified implementation. This removes almost 250 lines of duplicated
    code.

    It's marked __weak, so that *if* an architecture wants to override the
    default implementation it can do so by simply having its own replacement
    version, since many architectures use alternate calling conventions for
    the 'pipe()' system call for legacy reasons (ie traditional UNIX
    implementations often return the two file descriptors in registers)

    I still haven't changed the cris version even though Linus says the BKL
    isn't needed. The arch maintainer can easily do it if there are really
    no obstacles.

    Signed-off-by: Ulrich Drepper
    Signed-off-by: Linus Torvalds

    Ulrich Drepper
     

29 Apr, 2008

1 commit

17 Apr, 2008

1 commit

  • 64ac24e73   Generic semaphore implementation ... Browse Code »
    46

    Semaphores are no longer performance-critical, so a generic C
    implementation is better for maintainability, debuggability and
    extensibility. Thanks to Peter Zijlstra for fixing the lockdep
    warning. Thanks to Harvey Harrison for pointing out that the
    unlikely() was unnecessary.

    Signed-off-by: Matthew Wilcox
    Acked-by: Ingo Molnar

    Matthew Wilcox
     

24 Feb, 2008

3 commits

09 Feb, 2008

4 commits

  • ec7748b59   ide: introduce HAVE_IDE ... Browse Code »

    To allow flexible configuration of IDE introduce HAVE_IDE.
    All archs except arm, um and s390 unconditionally select it.
    For arm the actual configuration determine if IDE is supported.

    This is a step towards introducing drivers/Kconfig for arm.

    Signed-off-by: Sam Ravnborg
    Acked-by: Russell King - ARM Linux
    Acked-by: Bartlomiej Zolnierkiewicz

    Sam Ravnborg
     
  • bdc807871   avoid overflows in kernel/time.c ... Browse Code »

    When the conversion factor between jiffies and milli- or microseconds is
    not a single multiply or divide, as for the case of HZ == 300, we currently
    do a multiply followed by a divide. The intervening result, however, is
    subject to overflows, especially since the fraction is not simplified (for
    HZ == 300, we multiply by 300 and divide by 1000).

    This is exposed to the user when passing a large timeout to poll(), for
    example.

    This patch replaces the multiply-divide with a reciprocal multiplication on
    32-bit platforms. When the input is an unsigned long, there is no portable
    way to do this on 64-bit platforms there is no portable way to do this
    since it requires a 128-bit intermediate result (which gcc does support on
    64-bit platforms but may generate libgcc calls, e.g. on 64-bit s390), but
    since the output is a 32-bit integer in the cases affected, just simplify
    the multiply-divide (*3/10 instead of *300/1000).

    The reciprocal multiply used can have off-by-one errors in the upper half
    of the valid output range. This could be avoided at the expense of having
    to deal with a potential 65-bit intermediate result. Since the intent is
    to avoid overflow problems and most of the other time conversions are only
    semiexact, the off-by-one errors were considered an acceptable tradeoff.

    At Ralf Baechle's suggestion, this version uses a Perl script to compute
    the necessary constants. We already have dependencies on Perl for kernel
    compiles. This does, however, require the Perl module Math::BigInt, which
    is included in the standard Perl distribution starting with version 5.8.0.
    In order to support older versions of Perl, include a table of canned
    constants in the script itself, and structure the script so that
    Math::BigInt isn't required if pulling values from said table.

    Running the script requires that the HZ value is available from the
    Makefile. Thus, this patch also adds the Kconfig variable CONFIG_HZ to the
    architectures which didn't already have it (alpha, cris, frv, h8300, m32r,
    m68k, m68knommu, sparc, v850, and xtensa.) It does *not* touch the sh or
    sh64 architectures, since Paul Mundt has dealt with those separately in the
    sh tree.

    Signed-off-by: H. Peter Anvin
    Cc: Ralf Baechle ,
    Cc: Sam Ravnborg ,
    Cc: Paul Mundt ,
    Cc: Richard Henderson ,
    Cc: Michael Starvik ,
    Cc: David Howells ,
    Cc: Yoshinori Sato ,
    Cc: Hirokazu Takata ,
    Cc: Geert Uytterhoeven ,
    Cc: Roman Zippel ,
    Cc: William L. Irwin ,
    Cc: Chris Zankel ,
    Cc: H. Peter Anvin ,
    Cc: Jan Engelhardt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    H. Peter Anvin
     
  • 03a44825b   procfs: constify function pointer tables ... Browse Code »

    Signed-off-by: Jan Engelhardt
    Acked-by: Geert Uytterhoeven
    Acked-by: Mike Frysinger
    Acked-By: David Howells
    Acked-by: Bryan Wu
    Acked-by: Jesper Nilsson
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jan Engelhardt
     
  • b0b933c08   aout: mark arches that support A.OUT format ... Browse Code »

    Mark arches that support A.OUT format by including the following in their
    master Kconfig files:

    config ARCH_SUPPORTS_AOUT
    def_bool y

    This should also be set if the arch provides compatibility A.OUT support for
    an older arch, for instance x86_64 for i386 or sparc64 for sparc.

    I've guessed at which arches don't, based on comments in the code, however I'm
    sure that some of the ones I've marked as 'yes' actually should be 'no'.

    Signed-off-by: David Howells
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     

08 Feb, 2008

1 commit

  • 72a7fe396   Introduce flags for reserve_bootmem() ... Browse Code »

    This patchset adds a flags variable to reserve_bootmem() and uses the
    BOOTMEM_EXCLUSIVE flag in crashkernel reservation code to detect collisions
    between crashkernel area and already used memory.

    This patch:

    Change the reserve_bootmem() function to accept a new flag BOOTMEM_EXCLUSIVE.
    If that flag is set, the function returns with -EBUSY if the memory already
    has been reserved in the past. This is to avoid conflicts.

    Because that code runs before SMP initialisation, there's no race condition
    inside reserve_bootmem_core().

    [akpm@linux-foundation.org: coding-style fixes]
    [akpm@linux-foundation.org: fix powerpc build]
    Signed-off-by: Bernhard Walle
    Cc:
    Cc: "Eric W. Biederman"
    Cc: Vivek Goyal
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Bernhard Walle
     

07 Feb, 2008

1 commit

04 Feb, 2008

1 commit

  • f5bb3a5e9   Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (79 commits)
    Jesper Juhl is the new trivial patches maintainer
    Documentation: mention email-clients.txt in SubmittingPatches
    fs/binfmt_elf.c: spello fix
    do_invalidatepage() comment typo fix
    Documentation/filesystems/porting fixes
    typo fixes in net/core/net_namespace.c
    typo fix in net/rfkill/rfkill.c
    typo fixes in net/sctp/sm_statefuns.c
    lib/: Spelling fixes
    kernel/: Spelling fixes
    include/scsi/: Spelling fixes
    include/linux/: Spelling fixes
    include/asm-m68knommu/: Spelling fixes
    include/asm-frv/: Spelling fixes
    fs/: Spelling fixes
    drivers/watchdog/: Spelling fixes
    drivers/video/: Spelling fixes
    drivers/ssb/: Spelling fixes
    drivers/serial/: Spelling fixes
    drivers/scsi/: Spelling fixes
    ...

    Linus Torvalds
     

03 Feb, 2008

2 commits

29 Jan, 2008

1 commit

31 Oct, 2007

1 commit

20 Oct, 2007

4 commits

17 Oct, 2007

1 commit

  • cba4fbbff   remove include/asm-*/ipc.h ... Browse Code »

    All asm/ipc.h files do only #include .

    This patch therefore removes all include/asm-*/ipc.h files and moves the
    contents of include/asm-generic/ipc.h to include/linux/ipc.h.

    Signed-off-by: Adrian Bunk
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     

16 Oct, 2007

2 commits

15 Oct, 2007

1 commit

  • a0f97e06a   kbuild: enable 'make CFLAGS=...' to add additional options to CC ... Browse Code »

    The variable CFLAGS is a wellknown variable and the usage by
    kbuild may result in unexpected behaviour.
    On top of that several people over time has asked for a way to
    pass in additional flags to gcc.

    This patch replace use of CFLAGS with KBUILD_CFLAGS all over the
    tree and enabling one to use:
    make CFLAGS=...
    to specify additional gcc commandline options.

    One usecase is when trying to find gcc bugs but other
    use cases has been requested too.

    Patch was tested on following architectures:
    alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k

    Test was simple to do a defconfig build, apply the patch and check
    that nothing got rebuild.

    Signed-off-by: Sam Ravnborg

    Sam Ravnborg
     

12 Sep, 2007

1 commit

23 Aug, 2007

1 commit

18 Jul, 2007

1 commit

  • f284ce726   PTRACE_POKEDATA consolidation ... Browse Code »

    Identical implementations of PTRACE_POKEDATA go into generic_ptrace_pokedata()
    function.

    AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless
    return EPERM.

    Signed-off-by: Alexey Dobriyan
    Cc: Christoph Hellwig
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

17 Jul, 2007

4 commits

  • 1b0fac458   dma-mapping: prevent dma dependent code from linking on !HAS_DMA archs ... Browse Code »

    Continuing the work started in 411f0f3edc141a582190d3605cadd1d993abb6df ...

    This enables code with a dma path, that compiles away, to build without
    requiring additional code factoring. It also prevents code that calls
    dma_alloc_coherent and dma_free_coherent from linking whereas previously
    the code would hit a BUG() at run time. Finally, it allows archs that set
    !HAS_DMA to delete their asm/dma-mapping.h file.

    Cc: Cornelia Huck
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    Cc: John W. Linville
    Cc: Kyle McMartin
    Cc: James Bottomley
    Cc: Tejun Heo
    Cc: Jeff Garzik
    Cc:
    Cc:
    Cc:
    Cc:
    Signed-off-by: Dan Williams
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dan Williams
     
  • 2fea299f7   h8300 entry.S update ... Browse Code »

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

    Yoshinori Sato
     
  • 542f739d1   h8300: remove unused file ... Browse Code »

    arch/h8300/kernel/ints.c is unused.

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

    Yoshinori Sato
     
  • 86277d594   h8300 zImage support update ... Browse Code »

    - Add missing files
    - Add Makefile target
    - Change image base
    - Style fix

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

    Yoshinori Sato
     

01 Jun, 2007

1 commit

  • 8778beb98   h8300 trival patches ... Browse Code »

    - warning fix.
    - call trace area check fix.
    - There is no meaning, ' & ' it deletes

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

    Yoshinori Sato
     

19 May, 2007

2 commits

11 May, 2007

1 commit

10 May, 2007

2 commits

  • 9a9136e27   Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
    sound: convert "sound" subdirectory to UTF-8
    MAINTAINERS: Add cxacru website/mailing list
    include files: convert "include" subdirectory to UTF-8
    general: convert "kernel" subdirectory to UTF-8
    documentation: convert the Documentation directory to UTF-8
    Convert the toplevel files CREDITS and MAINTAINERS to UTF-8.
    remove broken URLs from net drivers' output
    Magic number prefix consistency change to Documentation/magic-number.txt
    trivial: s/i_sem /i_mutex/
    fix file specification in comments
    drivers/base/platform.c: fix small typo in doc
    misc doc and kconfig typos
    Remove obsolete fat_cvf help text
    Fix occurrences of "the the "
    Fix minor typoes in kernel/module.c
    Kconfig: Remove reference to external mqueue library
    Kconfig: A couple of grammatical fixes in arch/i386/Kconfig
    Correct comments in genrtc.c to refer to correct /proc file.
    Fix more "deprecated" spellos.
    Fix "deprecated" typoes.
    ...

    Fix trivial comment conflict in kernel/relay.c.

    Linus Torvalds
     
  • f7e4217b0   rename thread_info to stack ... Browse Code »

    This finally renames the thread_info field in task structure to stack, so that
    the assumptions about this field are gone and archs have more freedom about
    placing the thread_info structure.

    Nonbroken archs which have a proper thread pointer can do the access to both
    current thread and task structure via a single pointer.

    It'll allow for a few more cleanups of the fork code, from which e.g. ia64
    could benefit.

    Signed-off-by: Roman Zippel
    [akpm@linux-foundation.org: build fix]
    Cc: Richard Henderson
    Cc: Ivan Kokshaysky
    Cc: Russell King
    Cc: Ian Molton
    Cc: Haavard Skinnemoen
    Cc: Mikael Starvik
    Cc: David Howells
    Cc: Yoshinori Sato
    Cc: "Luck, Tony"
    Cc: Hirokazu Takata
    Cc: Geert Uytterhoeven
    Cc: Roman Zippel
    Cc: Greg Ungerer
    Cc: Ralf Baechle
    Cc: Ralf Baechle
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Paul Mundt
    Cc: Kazumoto Kojima
    Cc: Richard Curnow
    Cc: William Lee Irwin III
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Paolo 'Blaisorblade' Giarrusso
    Cc: Miles Bader
    Cc: Andi Kleen
    Cc: Chris Zankel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Roman Zippel
     

09 May, 2007

1 commit