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dmaengine: mv_xor: Enlarge descriptor pool size

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Now that we have 2 channels assigned to 2 CPUs and all requests are chained
on same channels, we need much more descriptors available to satisfy
async_tx workload.

3072 descriptors was found in our lab as the number of descriptors which
allow the async_tx stack to work without waiting for free descriptors on
submission of new requests.

Signed-off-by: Lior Amsalem <alior@marvell.com>
Reviewed-by: Nadav Haklai <nadavh@marvell.com>
Tested-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Lior Amsalem 2015-05-26 15:07:35 +02:00 committed by Vinod Koul
parent 6f166312c6
commit f1d25e0a9b
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/mv_xor.h
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@ -19,7 +19,7 @@
#include <linux/dmaengine.h>
#include <linux/interrupt.h>
#define MV_XOR_POOL_SIZE PAGE_SIZE
#define MV_XOR_POOL_SIZE (MV_XOR_SLOT_SIZE * 3072)
#define MV_XOR_SLOT_SIZE 64
#define MV_XOR_THRESHOLD 1
#define MV_XOR_MAX_CHANNELS 2