user/sven/linux.git/mm/cma_debug.c, branch v4.12

cma: Store a name in the cma structure

2017-04-18T18:41:12Z

Frameworks that may want to enumerate CMA heaps (e.g. Ion) will find it useful to have an explicit name attached to each region. Store the name in each CMA structure. Signed-off-by: Laura Abbott Signed-off-by: Greg Kroah-Hartman

mm: cma_alloc: allow to specify GFP mask

2017-02-25T01:46:55Z

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

mm/cma_debug: correct size input to bitmap function

2015-07-17T23:39:54Z

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

mm/cma_debug: fix debugging alloc/free interface

2015-07-17T23:39:54Z

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

mm/cma_debug.c: remove blank lines before DEFINE_SIMPLE_ATTRIBUTE()

2015-04-15T23:35:20Z

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

mm: cma: add functions to get region pages counters

2015-04-15T23:35:20Z

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

mm-cma-allocation-trigger-fix

2015-04-14T23:49:00Z

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

mm: cma: release trigger

2015-04-14T23:49:00Z

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

mm: cma: allocation trigger

2015-04-14T23:49:00Z

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

mm: cma: debugfs interface

2015-04-14T23:49:00Z

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