Eric Lee / smarc-fsl-linux-kernel

14 Apr, 2016

1 commit

  • 366dd4ea9   parisc: Fix ftrace function tracer ... Browse Code »

    Fix the FTRACE function tracer for 32- and 64-bit kernel.
    The former code was horribly broken.

    Reimplement most coding in assembly and utilize optimizations, e.g. put
    mcount() and ftrace_stub() into one L1 cacheline.

    Signed-off-by: Helge Deller

    Helge Deller
     

05 Jul, 2013

1 commit

  • d1a1dc0be   consolidate per-arch stack overflow debugging options ... Browse Code »

    Original posting:

    http://lkml.kernel.org/r/20121214184202.F54094D9@kernel.stglabs.ibm.com

    Several architectures have similar stack debugging config options.
    They all pretty much do the same thing, some with slightly
    differing help text.

    This patch changes the architectures to instead enable a Kconfig
    boolean, and then use that boolean in the generic Kconfig.debug
    to present the actual menu option. This removes a bunch of
    duplication and adds consistency across arches.

    Signed-off-by: Dave Hansen
    Reviewed-by: H. Peter Anvin
    Reviewed-by: James Hogan
    Acked-by: Chris Metcalf [for tile]
    Signed-off-by: Dave Hansen
    Signed-off-by: Linus Torvalds

    Dave Hansen
     

08 May, 2013

1 commit

  • 9372450cc   parisc: add kernel stack overflow check ... Browse Code »

    Add the CONFIG_DEBUG_STACKOVERFLOW config option to enable checks to
    detect kernel stack overflows.

    Stack overflows can not be detected reliable since we do not want to
    introduce too much overhead.

    Instead, during irq processing in do_cpu_irq_mask() we check kernel
    stack usage of the interrupted kernel process. Kernel threads can be
    easily detected by checking the value of space register 7 (sr7) which
    is zero when running inside the kernel.

    Since THREAD_SIZE is 16k and PAGE_SIZE is 4k, reduce the alignment of
    the init thread to the lower value (PAGE_SIZE) in the kernel
    vmlinux.ld.S linker script.

    Signed-off-by: Helge Deller

    Helge Deller
     

01 May, 2013

1 commit

  • 446f24d11   Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS ... Browse Code »

    The help text for this config is duplicated across the x86, parisc, and
    s390 Kconfig.debug files. Arnd Bergman noted that the help text was
    slightly misleading and should be fixed to state that enabling this
    option isn't a problem when using pre 4.4 gcc.

    To simplify the rewording, consolidate the text into lib/Kconfig.debug
    and modify it there to be more explicit about when you should say N to
    this config.

    Also, make the text a bit more generic by stating that this option
    enables compile time checks so we can cover architectures which emit
    warnings vs. ones which emit errors. The details of how an
    architecture decided to implement the checks isn't as important as the
    concept of compile time checking of copy_from_user() calls.

    While we're doing this, remove all the copy_from_user_overflow() code
    that's duplicated many times and place it into lib/ so that any
    architecture supporting this option can get the function for free.

    Signed-off-by: Stephen Boyd
    Acked-by: Arnd Bergmann
    Acked-by: Ingo Molnar
    Acked-by: H. Peter Anvin
    Cc: Arjan van de Ven
    Acked-by: Helge Deller
    Cc: Heiko Carstens
    Cc: Stephen Rothwell
    Cc: Chris Metcalf
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Stephen Boyd
     

07 Mar, 2010

1 commit

07 Feb, 2008

1 commit

23 Jan, 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