Messages in this thread Patch in this message |  | | From | Maxime Ripard <> | Subject | [PATCH v2 4/5] dmaengine: mv_xor: Enlarge descriptor pool size | Date | Tue, 26 May 2015 15:07:35 +0200 |
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From: Lior Amsalem <alior@marvell.com>
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> --- drivers/dma/mv_xor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/mv_xor.h b/drivers/dma/mv_xor.h index ac1ce87935de..6b10c8c647b9 100644 --- a/drivers/dma/mv_xor.h +++ b/drivers/dma/mv_xor.h @@ -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 -- 2.4.1
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