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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>
Lior Amsalem 10 жил өмнө
parent
commit
f1d25e0a9b
1 өөрчлөгдсөн 1 нэмэгдсэн , 1 устгасан
  1. 1 1
      drivers/dma/mv_xor.h

+ 1 - 1
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