Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933238AbbELPma (ORCPT ); Tue, 12 May 2015 11:42:30 -0400 Received: from down.free-electrons.com ([37.187.137.238]:57271 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932814AbbELPkF (ORCPT ); Tue, 12 May 2015 11:40:05 -0400 From: Maxime Ripard To: Vinod Koul , Dan Williams , Gregory Clement , Jason Cooper , Andrew Lunn , Sebastian Hesselbarth Cc: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Lior Amsalem , Thomas Petazzoni , Herbert Xu , "David S. Miller" , 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> X-Mailer: git-send-email 2.4.0 In-Reply-To: <1431445063-20226-1-git-send-email-maxime.ripard@free-electrons.com> References: <1431445063-20226-1-git-send-email-maxime.ripard@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1344 Lines: 39 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/