[PATCH v3 0/4] Raid: enable talitos xor offload for improving performance

[Qiang Liu <qiang.liu@freescale.com>]

The following 4 patches enabling fsl-dma and talitos offload raid
operations for improving raid performance and balancing CPU load.

Write performance will be improved by 25-30% tested by iozone.
Write performance is improved about 2% after using spin_lock_bh replace
spin_lock_irqsave.
CPU load will be reduced by 8%.

Changes in v3:
	- change release process of fsl-dma descriptor for resolve the
	potential race condition
	- add test result when use spin_lock_bh replace spin_lock_irqsave
	- modify the benchmark results according to the latest patch

Changes in v2:
	- rebase onto cryptodev tree
	- split the patch 3/4 up to 3 independent patches
	- remove the patch 4/4, the fix is not for cryptodev tree


Qiang Liu (4):
      Talitos: Support for async_tx XOR offload
      fsl-dma: remove attribute DMA_INTERRUPT of dmaengine
      fsl-dma: change release process of dma descriptor for supporting async_tx
      fsl-dma: use spin_lock_bh to instead of spin_lock_irqsave

 drivers/crypto/Kconfig   |    9 +
 drivers/crypto/talitos.c |  410 +++++++++++++++++++++++++++++++++++++++++++
 drivers/crypto/talitos.h |   53 ++++++
 drivers/dma/fsldma.c     |  436 +++++++++++++++++++++++++---------------------
 drivers/dma/fsldma.h     |    1 +
 5 files changed, 708 insertions(+), 201 deletions(-)