]> git.baikalelectronics.ru Git - kernel.git/commit
arch/sparc: add option to skip DMA sync as a part of map and unmap
authorAlexander Duyck <alexander.h.duyck@intel.com>
Wed, 14 Dec 2016 23:05:15 +0000 (15:05 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 15 Dec 2016 00:04:07 +0000 (16:04 -0800)
commitf35b7bfb9e9a41f8ad5b8141eadd0e2b647cc0e3
tree60d6d2e062f44c5ad9e3c5e418eda9978370f518
parentdc521cbf817a6d053056820177a7a872e96e00f2
arch/sparc: 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/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>
arch/sparc/kernel/iommu.c
arch/sparc/kernel/ioport.c