]> git.baikalelectronics.ru Git - kernel.git/commit
arch/metag: add option to skip DMA sync as a part of map and unmap
authorAlexander Duyck <alexander.h.duyck@intel.com>
Wed, 14 Dec 2016 23:04:52 +0000 (15:04 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 15 Dec 2016 00:04:07 +0000 (16:04 -0800)
commit37293869a17a01932ba43a0da93a2aa4b900214e
tree79cd65c08e31dced3a65d0f0d46ab6e91a36e99a
parentd0a05e2c8210f2b06f7537ba2d73e0cdb8ac20d5
arch/metag: add option to skip DMA sync as a part of map and unmap

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/20161110113503.76501.80809.stgit@ahduyck-blue-test.jf.intel.com
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/metag/kernel/dma.c