From: Lior Amsalem Date: Tue, 26 May 2015 13:07:35 +0000 (+0200) Subject: dmaengine: mv_xor: Enlarge descriptor pool size X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f1d25e0a9b1a6519580ddf5a7e5538093a504fcd;p=deliverable%2Flinux.git dmaengine: mv_xor: Enlarge descriptor pool size 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 Reviewed-by: Nadav Haklai Tested-by: Nadav Haklai Signed-off-by: Maxime Ripard Signed-off-by: Vinod Koul --- 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 #include -#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