Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756549Ab2HIIqh (ORCPT ); Thu, 9 Aug 2012 04:46:37 -0400 Received: from va3ehsobe001.messaging.microsoft.com ([216.32.180.11]:46845 "EHLO va3outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753618Ab2HIIqd (ORCPT ); Thu, 9 Aug 2012 04:46:33 -0400 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: -1 X-BigFish: VS-1(zz14ffIzz1202hzz8275bhz2dh2a8h668h839hd24he5bhf0ah107ah) From: To: , , , , , , , , CC: , Subject: [PATCH v7 0/8] Raid: enable talitos xor offload for improving performance Date: Thu, 9 Aug 2012 16:19:35 +0800 Message-ID: <1344500375-8457-1-git-send-email-qiang.liu@freescale.com> X-Mailer: git-send-email 1.7.5.1 MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3790 Lines: 89 Hi all, The following 8 patches enabling fsl-dma and talitos offload raid operations for improving raid performance and balancing CPU load. These patches include talitos, fsl-dma and carma module (caram uses some features of fsl-dma). Write performance will be improved by 25-30% tested by iozone. Write performance is improved about 2% after using spin_lock_bh replace spin_lock_irqsave. CPU load will be reduced by 8%. "fwiw, I gave v5 a test-drive, setting up a RAID5 array on ramdisks [1], and this patchseries, along with FSL_DMA && NET_DMA set seems to be holding water, so this series gets my:" Tested-by: Kim Phillips [1] mdadm --create --verbose --force /dev/md0 --level=raid5 --raid-devices=4 \ /dev/ram[0123] Changes in v7: - add test result which is provided by Kim Phillips; - correct one coding style issue in patch 5/8; - add comments by Arnd Bergmann in patch 6/8; Changes in v6: - swap the order of original patch 3/6 and 4/6; - merge Ira's patch to reduce the size of original patch; - merge Ira's patch of carma in 8/8; - update documents and descriptions according to Ira's advice; Changes in v5: - add detail description in patch 3/6 about the process of completed descriptor, the process is in align with fsl-dma Reference Manual, illustrate the potential risk and how to reproduce it; - drop the patch 7/7 in v4 according to Timur's comments; Changes in v4: - fix an error in talitos when dest addr is same with src addr, dest should be freed only one time if src is same with dest addr; - correct coding style in fsl-dma according to Ira's comments; - fix a race condition in fsl-dma fsl_tx_status(), remove the interface which is used to free descriptors in queue ld_completed, this interface has been included in fsldma_cleanup_descriptor(), in v3, there is one place missed spin_lock protect; - split the original patch 3/4 up to 2 patches 3/7 and 4/7 according to Li Yang's comments; - fix a warning of unitialized cookie; - add memory copy self test in fsl-dma; - add more detail description about use spin_lock_bh() to instead of spin_lock_irqsave() according to Timur's comments. Changes in v3: - change release process of fsl-dma descriptor for resolve the potential race condition; - add test result when use spin_lock_bh replace spin_lock_irqsave; - modify the benchmark results according to the latest patch. Changes in v2: - rebase onto cryptodev tree; - split the patch 3/4 up to 3 independent patches; - remove the patch 4/4, the fix is not for cryptodev tree; Qiang Liu (8): Talitos: Support for async_tx XOR offload fsl-dma: remove attribute DMA_INTERRUPT of dmaengine fsl-dma: add fsl_dma_free_descriptor() to reduce code duplication fsl-dma: move functions to avoid forward declarations fsl-dma: change release process of dma descriptor for supporting async_tx fsl-dma: use spin_lock_bh to instead of spin_lock_irqsave fsl-dma: fix a warning of unitialized cookie carma: remove unnecessary DMA_INTERRUPT capability drivers/crypto/Kconfig | 9 + drivers/crypto/talitos.c | 413 ++++++++++++++++++++++++++ drivers/crypto/talitos.h | 53 ++++ drivers/dma/fsldma.c | 488 +++++++++++++++++-------------- drivers/dma/fsldma.h | 17 +- drivers/misc/carma/carma-fpga-program.c | 1 - drivers/misc/carma/carma-fpga.c | 2 +- 7 files changed, 761 insertions(+), 222 deletions(-) -- 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/