From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A2FAC433FF for ; Thu, 15 Aug 2019 05:45:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37ADC2086C for ; Thu, 15 Aug 2019 05:45:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730385AbfHOFpP (ORCPT ); Thu, 15 Aug 2019 01:45:15 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:39410 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726105AbfHOFpO (ORCPT ); Thu, 15 Aug 2019 01:45:14 -0400 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id DCF73649FA0FCEA333F3; Thu, 15 Aug 2019 13:45:10 +0800 (CST) Received: from HGHY4L002753561.china.huawei.com (10.133.215.186) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.439.0; Thu, 15 Aug 2019 13:45:03 +0800 From: Zhen Lei To: Jean-Philippe Brucker , "Jean-Philippe Brucker" , John Garry , "Robin Murphy" , Will Deacon , Joerg Roedel , iommu , linux-arm-kernel , linux-kernel CC: Zhen Lei Subject: [PATCH v2 0/2] add nr_ats_masters for quickly check Date: Thu, 15 Aug 2019 13:44:37 +0800 Message-ID: <20190815054439.30652-1-thunder.leizhen@huawei.com> X-Mailer: git-send-email 2.21.0.windows.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.133.215.186] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v1 --> v2: 1. change the type of nr_ats_masters from atomic_t to int, and move its ind/dec operation from arm_smmu_enable_ats()/arm_smmu_disable_ats() to arm_smmu_attach_dev()/arm_smmu_detach_dev(), and protected by "spin_lock_irqsave(&smmu_domain->devices_lock, flags);" Zhen Lei (2): iommu/arm-smmu-v3: don't add a master into smmu_domain before it's ready iommu/arm-smmu-v3: add nr_ats_masters for quickly check drivers/iommu/arm-smmu-v3.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) -- 1.8.3