Eric Lee / smarc-fsl-linux-kernel

19 Apr, 2017

1 commit

25 Feb, 2017

1 commit

  • e2f466e32   mm: cma_alloc: allow to specify GFP mask ... Browse Code »

    Most users of this interface just want to use it with the default
    GFP_KERNEL flags, but for cases where DMA memory is allocated it may be
    called from a different context.

    No functional change yet, just passing through the flag to the
    underlying alloc_contig_range function.

    Link: http://lkml.kernel.org/r/20170127172328.18574-2-l.stach@pengutronix.de
    Signed-off-by: Lucas Stach
    Acked-by: Vlastimil Babka
    Acked-by: Michal Hocko
    Cc: Radim Krcmar
    Cc: Catalin Marinas
    Cc: Will Deacon
    Cc: Chris Zankel
    Cc: Ralf Baechle
    Cc: Paolo Bonzini
    Cc: Alexander Graf
    Cc: Joonsoo Kim
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Lucas Stach
     

18 Jul, 2015

2 commits

  • d56e84b40   mm/cma_debug: correct size input to bitmap function ... Browse Code »

    In CMA, 1 bit in bitmap means 1 << order_per_bits pages so size of
    bitmap is cma->count >> order_per_bits rather than just cma->count.
    This patch fixes it.

    Signed-off-by: Joonsoo Kim
    Acked-by: Michal Nazarewicz
    Cc: Sasha Levin
    Cc: Stefan Strogin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Joonsoo Kim
     
  • 2292c0b1c   mm/cma_debug: fix debugging alloc/free interface ... Browse Code »

    CMA has alloc/free interface for debugging. It is intended that
    alloc/free occurs in specific CMA region, but, currently, alloc/free
    interface is on root dir due to the bug so we can't select CMA region
    where alloc/free happens.

    This patch fixes this problem by making alloc/free interface per CMA
    region.

    Signed-off-by: Joonsoo Kim
    Acked-by: Michal Nazarewicz
    Cc: Sasha Levin
    Cc: Stefan Strogin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Joonsoo Kim
     

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