arch/sparc: add option to skip DMA sync as a part of map and unmap

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This change allows us to pass DMA_ATTR_SKIP_CPU_SYNC which allows us to
avoid invoking cache line invalidation if the driver will just handle it
via a sync_for_cpu or sync_for_device call.

Link: http://lkml.kernel.org/r/20161110113544.76501.40008.stgit@ahduyck-blue-test.jf.intel.com
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Alexander Duyck 2016-12-14 15:05:15 -08:00 • committed by Linus Torvalds

parent a08120017d

commit 68bbc28f61

2 changed files with 4 additions and 4 deletions

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4

arch/sparc/kernel/iommu.c

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4

arch/sparc/kernel/ioport.c

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