From: Maxime Ripard Subject: [PATCH 3/8] dmaengine: mv_xor: Enlarge descriptor pool size Date: Tue, 12 May 2015 17:37:38 +0200 Message-ID: <1431445063-20226-4-git-send-email-maxime.ripard@free-electrons.com> References: <1431445063-20226-1-git-send-email-maxime.ripard@free-electrons.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Lior Amsalem , Herbert Xu , Thomas Petazzoni , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org, Maxime Ripard , "David S. Miller" , linux-arm-kernel@lists.infradead.org To: Vinod Koul , Dan Williams , Gregory Clement , Jason Cooper , Andrew Lunn , Sebastian Hesselbarth Return-path: In-Reply-To: <1431445063-20226-1-git-send-email-maxime.ripard@free-electrons.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org List-Id: linux-crypto.vger.kernel.org From: Lior Amsalem 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 --- 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 89a8c85539a1..145ba2f895f7 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 -- 2.4.0