Eric Lee / smarc-fsl-linux-kernel

16 Apr, 2015

2 commits

  • bda6d3304   mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE() ... Browse Code »

    Like EXPORT_SYMBOL(): the positioning communicates that the macro pertains
    to the immediately preceding function.

    Cc: Dmitry Safonov
    Cc: Michal Nazarewicz
    Cc: Stefan Strogin
    Cc: Marek Szyprowski
    Cc: Joonsoo Kim
    Cc: Pintu Kumar
    Cc: Weijie Yang
    Cc: Laurent Pinchart
    Cc: Vyacheslav Tyrtov
    Cc: Aleksei Mateosian
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     
  • 2e32b9476   mm: cma: add functions to get region pages counters ... Browse Code »

    Here are two functions that provide interface to compute/get used size and
    size of biggest free chunk in cma region. Add that information to
    debugfs.

    [akpm@linux-foundation.org: move debug code from cma.c into cma_debug.c]
    [stefan.strogin@gmail.com: move code from cma_get_used() and cma_get_maxchunk() to cma_used_get() and cma_maxchunk_get()]
    Signed-off-by: Dmitry Safonov
    Signed-off-by: Stefan Strogin
    Acked-by: Michal Nazarewicz
    Cc: Marek Szyprowski
    Cc: Joonsoo Kim
    Cc: Pintu Kumar
    Cc: Weijie Yang
    Cc: Laurent Pinchart
    Cc: Vyacheslav Tyrtov
    Cc: Aleksei Mateosian
    Signed-off-by: Stefan Strogin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dmitry Safonov
     

15 Apr, 2015

4 commits

  • 875abdb6d   mm-cma-allocation-trigger-fix ... Browse Code »

    s/CONFIG_CMA_ALIGNMENT/0/, per Joonsoo

    Cc: Joonsoo Kim
    Cc: Konrad Rzeszutek Wilk
    Cc: Laura Abbott
    Cc: Marek Szyprowski
    Cc: Sasha Levin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     
  • 8325330b0   mm: cma: release trigger ... Browse Code »

    Provides a userspace interface to trigger a CMA release.

    Usage:

    echo [pages] > free

    This would provide testing/fuzzing access to the CMA release paths.

    [akpm@linux-foundation.org: coding-style fixes]
    [mhocko@suse.cz: fix build]
    Signed-off-by: Sasha Levin
    Acked-by: Joonsoo Kim
    Cc: Marek Szyprowski
    Cc: Laura Abbott
    Cc: Konrad Rzeszutek Wilk
    Signed-off-by: Michal Hocko
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Sasha Levin
     
  • 26b02a1f9   mm: cma: allocation trigger ... Browse Code »

    Provides a userspace interface to trigger a CMA allocation.

    Usage:

    echo [pages] > alloc

    This would provide testing/fuzzing access to the CMA allocation paths.

    Signed-off-by: Sasha Levin
    Acked-by: Joonsoo Kim
    Cc: Marek Szyprowski
    Cc: Laura Abbott
    Cc: Konrad Rzeszutek Wilk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Sasha Levin
     
  • 28b24c1fc   mm: cma: debugfs interface ... Browse Code »

    I've noticed that there is no interfaces exposed by CMA which would let me
    fuzz what's going on in there.

    This small patchset exposes some information out to userspace, plus adds
    the ability to trigger allocation and freeing from userspace.

    This patch (of 3):

    Implement a simple debugfs interface to expose information about CMA areas
    in the system.

    Useful for testing/sanity checks for CMA since it was impossible to
    previously retrieve this information in userspace.

    Signed-off-by: Sasha Levin
    Acked-by: Joonsoo Kim
    Cc: Marek Szyprowski
    Cc: Laura Abbott
    Cc: Konrad Rzeszutek Wilk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Sasha Levin