Hi everyone,
This series is the result of Lior Amsalem's nice work to improve the mv_xor
engine. The most interesting patches are:
* Patch 2, which reduces code duplication by implementing the DMA_MEMCPY
in terms of a DMA_XOR.
This not only simplifies the driver, but also improves performance.
The controller is now able to put DMA_MEMCPY and DMA_XOR transactions
in the same chain, given they are both handled as XOR commands.
* Patch 3, which removes the multi-slot support entirely. Such support
is not used and it only makes the code much more complex for no reason.
* Patch 5, which enables the end-of-descriptor interrupt only when needed.
For DMA_XOR and DMA_MEMCPY operations the end-of-chain is used. This
reduces the number of interrupts.
* Patch 7, which adds support for the DMA_INTERRUPT operation. This is
implemented as a XOR operation from a dummy source to a dummy destination.
The rest of the patches are cleanups, removing some dead code and making the
code more readable. The patches are based on v3.17-rc1.
Ezequiel Garcia (3):
dma: mv_xor: Replace printk with dev_info
dma: mv_xor: Remove all interrupt magic numbers
dma: mv_xor: Remove dead code
Lior Amsalem (4):
dma: mv_xor: Simplify the DMA_MEMCPY operation
dma: mv_xor: Remove multi-slot support
dma: mv_xor: Reduce interrupts by enabling EOD only when needed
dma: mv_xor: Add support for DMA_INTERRUPT
drivers/dma/mv_xor.c | 268 ++++++++++++++++++---------------------------------
drivers/dma/mv_xor.h | 62 ++++++------
2 files changed, 123 insertions(+), 207 deletions(-)
--
2.0.1
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