kernel_optimize_test/drivers/dma
Dan Williams 5cbafa65b9 ioat2,3: convert to a true ring buffer
Replace the current linked list munged into a ring with a native ring
buffer implementation.  The benefit of this approach is reduced overhead
as many parameters can be derived from ring position with simple pointer
comparisons and descriptor allocation/freeing becomes just a
manipulation of head/tail pointers.

It requires a contiguous allocation for the software descriptor
information.

Since this arrangement is significantly different from the ioat1 chain,
move ioat2,3 support into its own file and header.  Common routines are
exported from driver/dma/ioat/dma.[ch].

Signed-off-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-09-08 17:29:55 -07:00
..
ioat ioat2,3: convert to a true ring buffer 2009-09-08 17:29:55 -07:00
ipu dma: fix ipu_idmac.c to not discard the last queued buffer 2009-05-12 14:41:48 -07:00
dmaengine.c ioatdma: fix "ioatdma frees DMA memory with wrong function" 2009-05-12 14:41:47 -07:00
dmatest.c dmatest: fix max channels handling 2009-04-08 15:08:23 -07:00
dw_dmac_regs.h dw_dmac: add cyclic API to DW DMA driver 2009-04-01 15:42:34 -07:00
dw_dmac.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2009-04-03 12:13:45 -07:00
fsldma.c fsldma: Fix compile warnings 2009-05-27 13:40:00 -07:00
fsldma.h fsldma: allow Freescale Elo DMA driver to be compiled as a module 2008-09-26 17:00:11 -07:00
iop-adma.c dmaengine: initialize tx_list in dma_async_tx_descriptor_init 2009-03-25 09:13:24 -07:00
iovlock.c [2/4] I/OAT: fix dma_pin_iovec_pages() error handling 2008-11-10 15:00:56 -08:00
Kconfig dmaengine: allow dma support for async_tx to be toggled 2009-03-25 09:13:25 -07:00
Makefile ioat: move to drivers/dma/ioat/ 2009-07-28 14:32:12 -07:00
mv_xor.c dmaengine: initialize tx_list in dma_async_tx_descriptor_init 2009-03-25 09:13:24 -07:00
mv_xor.h dmaengine: DMA engine driver for Marvell XOR engine 2008-07-08 11:58:36 -07:00