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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 <[email protected]>
Reviewed-by: Nadav Haklai <[email protected]>
Tested-by: Nadav Haklai <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
This commit is contained in:
Lior Amsalem 2015-05-26 15:07:35 +02:00 • committed by Vinod Koul
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