On Thursday, April 21, 2016 09:15:21 PM Andy Shevchenko wrote:
> The last approach in the commit 8b3444852a2b ("sata_dwc_460ex: move to generic
> DMA driver") to switch to generic DMA engine API wasn't tested on bare metal.
> Besides that we expecting new board support coming with the same SATA IP but
> with different DMA.
>
> This series is targetting the following things:
> - a few bug fixes to the original driver
> - a part to fix the DMA engine usage and in particularly dw_dmac driver
> - move driver to use generic PHY and "dmas" property which leads to update in DTS
>
> The driver has been tested myself on Sam460ex and WD MyBookLive (apollo3g)
> boards. In any case I ask Christian, Måns, and Julian to independently test and
> provide Tested-by tag or error report.
I did a test run on my WD MyBook Live. I applied all the patches in
this series on top of the topic/dw branch of Vinod Koul:
<https://git.kernel.org/cgit/linux/kernel/git/vkoul/slave-dma.git/>
Tested-by: Christian Lamparter <chunkeey@xxxxxxxxxxxxxx>
---
results for my old ST3808110AS HDD. filesystem is ext4.
# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 204 MB in 3.02 seconds = 67.51 MB/sec
# bonnie++ -u mbl
Using uid:1000, gid:1000.
Writing a byte at a time...done
Writing intelligently...done
Rewriting...done
Reading a byte at a time...done
Reading intelligently...done
start 'em...done...done...done...done...done...
Create files in sequential order...done.
Stat files in sequential order...done.
Delete files in sequential order...done.
Create files in random order...done.
Stat files in random order...done.
Delete files in random order...done.
Version 1.97 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
mbl 496M 98 99 26011 21 17589 20 538 99 80138 39 208.9 8
Latency 95267us 1409ms 295ms 26947us 9644us 1787ms
Version 1.97 ------Sequential Create------ --------Random Create--------
mbl -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 6959 78 +++++ +++ 5197 40 7250 79 +++++ +++ 4718 37
Latency 149ms 6742us 212ms 177ms 767us 217ms
1.97,1.97,mbl,1,1461269771,496M,,98,99,26011,21,17589,20,538,99,80138,39,208.9,8,16,,,,,6959,78,+++++,+++,5197,40,7250,79,+++++,+++,4718,37,95267us,1409ms,295ms,26947us,9644us,1787ms,149ms,6742us,212ms,177ms,767us,217ms
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