Eric Lee / smarc-fsl-linux-kernel

19 May, 2008

8 commits

06 May, 2008

2 commits

  • b6d9d267f   m68k: remove old mac_esp cruft ... Browse Code »

    Remove the rest of the old mac_esp driver. Also ditch the rest of the
    machw mechanism, it needs to be replaced by a fake openfirmware tree.

    Signed-off-by: Finn Thain
    Signed-off-by: Geert Uytterhoeven
    Signed-off-by: Linus Torvalds

    Finn Thain
     
  • 3b17f136b   m68k: Handle 68040 bus faults ... Browse Code »

    Fix 68040 bus fault handling, so the standard kernel exception handling
    can be used for i/o probing.

    Contrary to normal access faults there is nothing to fix, but at least
    we have to disable writebacks to avoid recursive faults.

    Signed-off-by: Roman Zippel
    Signed-off-by: Geert Uytterhoeven
    Signed-off-by: Linus Torvalds

    Roman Zippel
     

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

4 commits

28 Apr, 2008

2 commits

19 Apr, 2008

1 commit

17 Apr, 2008

1 commit

  • 64ac24e73   Generic semaphore implementation ... Browse Code »
    43

    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
     

05 Apr, 2008

2 commits

  • a1aa758d0   m68k: update defconfigs for 2.6.25 ... Browse Code »

    Long overdue update of the m68k defconfigs

    Signed-off-by: Geert Uytterhoeven
    Signed-off-by: Linus Torvalds

    Geert Uytterhoeven
     
  • ef85ecbf1   m68k: use KBUILD_DEFCONFIG ... Browse Code »

    The default defconfig should be one from arch/m68k/configs/

    arch/m68k/defconfig was not exactly identical to amiga_defconfig but
    also considering how long they have been without any update that doesn't
    seem to have been on purpose.

    Signed-off-by: Adrian Bunk
    Signed-off-by: Geert Uytterhoeven
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     

05 Mar, 2008

1 commit

09 Feb, 2008

6 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
     
  • 1eb114112   aout: remove unnecessary inclusions of {asm, linux}/a.out.h ... Browse Code »

    Remove now unnecessary inclusions of {asm,linux}/a.out.h.

    [akpm@linux-foundation.org: fix alpha build]
    Signed-off-by: David Howells
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     
  • 7fa303150   aout: suppress A.OUT library support if !CONFIG_ARCH_SUPPORTS_AOUT ... Browse Code »

    Suppress A.OUT library support if CONFIG_ARCH_SUPPORTS_AOUT is not set.

    Not all architectures support the A.OUT binfmt, so the ELF binfmt should not
    be permitted to go looking for A.OUT libraries to load in such a case. Not
    only that, but under such conditions A.OUT core dumps are not produced either.

    To make this work, this patch also does the following:

    (1) Makes the existence of the contents of linux/a.out.h contingent on
    CONFIG_ARCH_SUPPORTS_AOUT.

    (2) Renames dump_thread() to aout_dump_thread() as it's only called by A.OUT
    core dumping code.

    (3) Moves aout_dump_thread() into asm/a.out-core.h and makes it inline. This
    is then included only where needed. This means that this bit of arch
    code will be stored in the appropriate A.OUT binfmt module rather than
    the core kernel.

    (4) Drops A.OUT support for Blackfin (according to Mike Frysinger it's not
    needed) and FRV.

    This patch depends on the previous patch to move STACK_TOP[_MAX] out of
    asm/a.out.h and into asm/processor.h as they're required whether or not A.OUT
    format is available.

    [jdike@addtoit.com: uml: re-remove accidentally restored code]
    Signed-off-by: David Howells
    Cc:
    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     
  • 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

2 commits

  • 145e92307   m68k: correct setting of struct user.u_ar0 ... Browse Code »

    Commit 6e16d89bcd668a95eb22add24c02d80890232b66 ("Sanitize the type of
    struct user.u_ar0") forgot to change the m68k setting code, causing the
    following compiler warning:

    arch/m68k/kernel/process.c:338: warning: assignment makes integer from pointer without a cast

    Signed-off-by: Geert Uytterhoeven
    Signed-off-by: Linus Torvalds

    Geert Uytterhoeven
     
  • 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

2 commits

  • 7b892806b   cleanup after APUS removal ... Browse Code »

    After the APUS removal, some code can be removed.

    Signed-off-by: Adrian Bunk
    Acked-by: Geert Uytterhoeven
    Cc: Bartlomiej Zolnierkiewicz
    Cc: Karsten Keil
    Cc: James Bottomley
    Cc: "Antonino A. Daplas"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     
  • 15aafa2f9   Remove pointless casts from void pointers ... Browse Code »

    Mostly in and around irq handlers.

    Signed-off-by: Jeff Garzik
    Cc: Russell King
    Cc: "Luck Tony"
    Cc: Roman Zippel
    Cc: Geert Uytterhoeven
    Cc: Paul Mackerras
    Cc: Benjamin Herrenschmidt
    Acked-by: Dmitry Torokhov
    Cc: Karsten Keil
    Acked-by: "John W. Linville"
    Cc: James Bottomley
    Cc: David Brownell
    Cc: "Antonino A. Daplas"
    Acked-by: Josh Boyer
    Acked-by: Holger Schurig
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Garzik
     

06 Feb, 2008

8 commits