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authorLior Amsalem <alior@marvell.com>2015-05-26 15:07:35 +0200
committerVinod Koul <vinod.koul@intel.com>2015-06-10 18:48:31 +0200
commitf1d25e0a9b1a6519580ddf5a7e5538093a504fcd (patch)
tree01959d3f5f91ea61761c6ec7c75678859adff661 /drivers/dma/mv_xor.h
parentdmaengine: mv_xor: add support for a38x command in descriptor mode (diff)
downloadlinux-f1d25e0a9b1a6519580ddf5a7e5538093a504fcd.tar.xz
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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 <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>
Diffstat (limited to 'drivers/dma/mv_xor.h')
-rw-r--r--drivers/dma/mv_xor.h2
1 files changed, 1 insertions, 1 deletions
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