From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751952AbdFGO7C (ORCPT ); Wed, 7 Jun 2017 10:59:02 -0400 Received: from 8bytes.org ([81.169.241.247]:45500 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751846AbdFGO66 (ORCPT ); Wed, 7 Jun 2017 10:58:58 -0400 From: Joerg Roedel To: iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, Tom Lendacky , Arindam Nath , Joerg Roedel Subject: [PATCH 0/7] iommu/amd: Optimize iova queue flushing Date: Wed, 7 Jun 2017 16:58:13 +0200 Message-Id: <1496847500-6781-1-git-send-email-joro@8bytes.org> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, here is a patch-set to optimize the queue flushing in the AMD IOMMU driver. It removes the global per-cpu flush queues and implements queue-rings which are per-domain and per-cpu. This allows some good optimizations to lower the flush-rate of a domain and also lowers the contention on the queue locks. Regards, Joerg Joerg Roedel (7): iommu/amd: Rip out old queue flushing code iommu/amd: Add per-domain flush-queue data structures iommu/amd: Make use of the per-domain flush queue iommu/amd: Add locking to per-domain flush-queue iommu/amd: Add flush counters to struct dma_ops_domain iommu/amd: Add per-domain timer to flush per-cpu queues iommu/amd: Remove queue_release() function drivers/iommu/amd_iommu.c | 363 +++++++++++++++++++++++++++++----------------- 1 file changed, 227 insertions(+), 136 deletions(-) -- 2.7.4